diff options
| author | Olof Johansson <olof@lixom.net> | 2011-12-19 21:09:48 -0800 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2011-12-19 21:09:48 -0800 |
| commit | 3b0d597139efddfd8960b44249b4a4c977d172f1 (patch) | |
| tree | 51c16913c15b52f06f0f4b5b721226e8885e3663 | |
| parent | b86c7842ef176df0fef3d3d05f83900b3599223d (diff) | |
| parent | 6b6fa98c3e6d29eb7b515d807139590a27e6b9b0 (diff) | |
Merge branch 'omap/uart' into next/pm
* omap/uart: (32 commits)
ARM: omap: pass minimal SoC/board data for UART from dt
arm/dts: Add minimal device tree support for omap2420 and omap2430
omap-serial: Add minimal device tree support
omap-serial: Use default clock speed (48Mhz) if not specified
omap-serial: Get rid of all pdev->id usage
ARM: OMAP2+: UART: Fix compilation/sparse warnings
ARM: OMAP2+: UART: Remove omap_uart_can_sleep and add pm_qos
ARM: OMAP2+: UART: Do not gate uart clocks if used for debug_prints
ARM: OMAP2+: UART: Avoid uart idling on suspend for no_console_suspend usecase
ARM: OMAP2+: UART: Avoid console uart idling during bootup
ARM: OMAP2+: UART: remove temporary variable used to count uart instance
ARM: OMAP2+: UART: Make the RX_TIMEOUT for DMA configurable for each UART
ARM: OMAP2+: UART: Allow UART parameters to be configured from board file.
ARM: OMAP2+: UART: Remove old and unused clocks handling funcs
ARM: OMAP2+: UART: Add wakeup mechanism for omap-uarts
ARM: OMAP2+: UART: Move errata handling from serial.c to omap-serial
ARM: OMAP2+: UART: Get context loss count to context restore
ARM: OMAP2+: UART: Remove uart reset function.
ARM: OMAP2+: UART: Ensure all reg values configured are available from port structure
ARM: OMAP2+: UART: Remove context_save and move context restore to driver
...
38 files changed, 1066 insertions, 1124 deletions
diff --git a/Documentation/devicetree/bindings/serial/omap_serial.txt b/Documentation/devicetree/bindings/serial/omap_serial.txt new file mode 100644 index 00000000000..342eedd1005 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/omap_serial.txt @@ -0,0 +1,10 @@ +OMAP UART controller + +Required properties: +- compatible : should be "ti,omap2-uart" for OMAP2 controllers +- compatible : should be "ti,omap3-uart" for OMAP3 controllers +- compatible : should be "ti,omap4-uart" for OMAP4 controllers +- ti,hwmods : Must be "uart<n>", n being the instance number (1-based) + +Optional properties: +- clock-frequency : frequency of the clock input to the UART diff --git a/arch/arm/boot/dts/omap2.dtsi b/arch/arm/boot/dts/omap2.dtsi new file mode 100644 index 00000000000..f2ab4ea7cc0 --- /dev/null +++ b/arch/arm/boot/dts/omap2.dtsi @@ -0,0 +1,67 @@ +/* + * Device Tree Source for OMAP2 SoC + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +/include/ "skeleton.dtsi" + +/ { + compatible = "ti,omap2430", "ti,omap2420", "ti,omap2"; + + aliases { + serial0 = &uart1; + serial1 = &uart2; + serial2 = &uart3; + }; + + cpus { + cpu@0 { + compatible = "arm,arm1136jf-s"; + }; + }; + + soc { + compatible = "ti,omap-infra"; + mpu { + compatible = "ti,omap2-mpu"; + ti,hwmods = "mpu"; + }; + }; + + ocp { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + ti,hwmods = "l3_main"; + + intc: interrupt-controller@1 { + compatible = "ti,omap2-intc"; + interrupt-controller; + #interrupt-cells = <1>; + }; + + uart1: serial@4806a000 { + compatible = "ti,omap2-uart"; + ti,hwmods = "uart1"; + clock-frequency = <48000000>; + }; + + uart2: serial@4806c000 { + compatible = "ti,omap2-uart"; + ti,hwmods = "uart2"; + clock-frequency = <48000000>; + }; + + uart3: serial@4806e000 { + compatible = "ti,omap2-uart"; + ti,hwmods = "uart3"; + clock-frequency = <48000000>; + }; + }; +}; diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index d202bb5ec7e..216c3317461 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -13,6 +13,13 @@ / { compatible = "ti,omap3430", "ti,omap3"; + aliases { + serial0 = &uart1; + serial1 = &uart2; + serial2 = &uart3; + serial3 = &uart4; + }; + cpus { cpu@0 { compatible = "arm,cortex-a8"; @@ -59,5 +66,29 @@ interrupt-controller; #interrupt-cells = <1>; }; + + uart1: serial@0x4806a000 { + compatible = "ti,omap3-uart"; + ti,hwmods = "uart1"; + clock-frequency = <48000000>; + }; + + uart2: serial@0x4806c000 { + compatible = "ti,omap3-uart"; + ti,hwmods = "uart2"; + clock-frequency = <48000000>; + }; + + uart3: serial@0x49020000 { + compatible = "ti,omap3-uart"; + ti,hwmods = "uart3"; + clock-frequency = <48000000>; + }; + + uart4: serial@0x49042000 { + compatible = "ti,omap3-uart"; + ti,hwmods = "uart4"; + clock-frequency = <48000000>; + }; }; }; diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi index 4c61c829043..e8fe75fac7c 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -21,6 +21,10 @@ interrupt-parent = <&gic>; aliases { + serial0 = &uart1; + serial1 = &uart2; + serial2 = &uart3; + serial3 = &uart4; }; cpus { @@ -99,5 +103,29 @@ reg = <0x48241000 0x1000>, <0x48240100 0x0100>; }; + + uart1: serial@0x4806a000 { + compatible = "ti,omap4-uart"; + ti,hwmods = "uart1"; + clock-frequency = <48000000>; + }; + + uart2: serial@0x4806c000 { + compatible = "ti,omap4-uart"; + ti,hwmods = "uart2"; + clock-frequency = <48000000>; + }; + + uart3: serial@0x48020000 { + compatible = "ti,omap4-uart"; + ti,hwmods = "uart3"; + clock-frequency = <48000000>; + }; + + uart4: serial@0x4806e000 { + compatible = "ti,omap4-uart"; + ti,hwmods = "uart4"; + clock-frequency = <48000000>; + }; }; }; diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 50f43942c1a..a34d0f7d1bf 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -76,8 +76,13 @@ config SOC_OMAP3430 default y select ARCH_OMAP_OTG -config SOC_OMAPTI816X - bool "TI816X support" +config SOC_OMAPTI81XX + bool "TI81XX support" + depends on ARCH_OMAP3 + default y + +config SOC_OMAPAM33XX + bool "AM33XX support" depends on ARCH_OMAP3 default y @@ -314,7 +319,7 @@ config MACH_OMAP_3630SDP config MACH_TI8168EVM bool "TI8168 Evaluation Module" - depends on SOC_OMAPTI816X + depends on SOC_OMAPTI81XX default y config MACH_OMAP_4430SDP diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c index 83126368ed9..109b434159f 100644 --- a/arch/arm/mach-omap2/board-3430sdp.c +++ b/arch/arm/mach-omap2/board-3430sdp.c @@ -475,106 +475,8 @@ static const struct usbhs_omap_board_data usbhs_bdata __initconst = { static struct omap_board_mux board_mux[] __initdata = { { .reg_offset = OMAP_MUX_TERMINATOR }, }; - -static struct omap_device_pad serial1_pads[] __initdata = { - /* - * Note that off output enable is an active low - * signal. So setting this means pin is a - * input enabled in off mode - */ - OMAP_MUX_STATIC("uart1_cts.uart1_cts", - OMAP_PIN_INPUT | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart1_rts.uart1_rts", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart1_rx.uart1_rx", - OMAP_PIN_INPUT | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart1_tx.uart1_tx", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial2_pads[] __initdata = { - OMAP_MUX_STATIC("uart2_cts.uart2_cts", - OMAP_PIN_INPUT_PULLUP | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rts.uart2_rts", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rx.uart2_rx", - OMAP_PIN_INPUT | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_tx.uart2_tx", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial3_pads[] __initdata = { - OMAP_MUX_STATIC("uart3_cts_rctx.uart3_cts_rctx", - OMAP_PIN_INPUT_PULLDOWN | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rts_sd.uart3_rts_sd", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rx_irrx.uart3_rx_irrx", - OMAP_PIN_INPUT | - OMAP_PIN_OFF_INPUT_PULLDOWN | - OMAP_OFFOUT_EN | - OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_tx_irtx.uart3_tx_irtx", - OMAP_PIN_OUTPUT | - OMAP_OFF_EN | - OMAP_MUX_MODE0), -}; - -static struct omap_board_data serial1_data __initdata = { - .id = 0, - .pads = serial1_pads, - .pads_cnt = ARRAY_SIZE(serial1_pads), -}; - -static struct omap_board_data serial2_data __initdata = { - .id = 1, - .pads = serial2_pads, - .pads_cnt = ARRAY_SIZE(serial2_pads), -}; - -static struct omap_board_data serial3_data __initdata = { - .id = 2, - .pads = serial3_pads, - .pads_cnt = ARRAY_SIZE(serial3_pads), -}; - -static inline void board_serial_init(void) -{ - omap_serial_init_port(&serial1_data); - omap_serial_init_port(&serial2_data); - omap_serial_init_port(&serial3_data); -} #else #define board_mux NULL - -static inline void board_serial_init(void) -{ - omap_serial_init(); -} #endif /* @@ -711,7 +613,7 @@ static void __init omap_3430sdp_init(void) else gpio_pendown = SDP3430_TS_GPIO_IRQ_SDPV1; omap_ads7846_init(1, gpio_pendown, 310, NULL); - board_serial_init(); + omap_serial_init(); omap_sdrc_init(hyb18m512160af6_sdrc_params, NULL); usb_musb_init(NULL); board_smc91x_init(); diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c index ef2bbc09428..5f264fad69b 100644 --- a/arch/arm/mach-omap2/board-4430sdp.c +++ b/arch/arm/mach-omap2/board-4430sdp.c @@ -837,74 +837,8 @@ static struct omap_board_mux board_mux[] __initdata = { { .reg_offset = OMAP_MUX_TERMINATOR }, }; -static struct omap_device_pad serial2_pads[] __initdata = { - OMAP_MUX_STATIC("uart2_cts.uart2_cts", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rts.uart2_rts", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rx.uart2_rx", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_tx.uart2_tx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial3_pads[] __initdata = { - OMAP_MUX_STATIC("uart3_cts_rctx.uart3_cts_rctx", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rts_sd.uart3_rts_sd", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rx_irrx.uart3_rx_irrx", - OMAP_PIN_INPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_tx_irtx.uart3_tx_irtx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial4_pads[] __initdata = { - OMAP_MUX_STATIC("uart4_rx.uart4_rx", - OMAP_PIN_INPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart4_tx.uart4_tx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_board_data serial2_data __initdata = { - .id = 1, - .pads = serial2_pads, - .pads_cnt = ARRAY_SIZE(serial2_pads), -}; - -static struct omap_board_data serial3_data __initdata = { - .id = 2, - .pads = serial3_pads, - .pads_cnt = ARRAY_SIZE(serial3_pads), -}; - -static struct omap_board_data serial4_data __initdata = { - .id = 3, - .pads = serial4_pads, - .pads_cnt = ARRAY_SIZE(serial4_pads), -}; - -static inline void board_serial_init(void) -{ - struct omap_board_data bdata; - bdata.flags = 0; - bdata.pads = NULL; - bdata.pads_cnt = 0; - bdata.id = 0; - /* pass dummy data for UART1 */ - omap_serial_init_port(&bdata); - - omap_serial_init_port(&serial2_data); - omap_serial_init_port(&serial3_data); - omap_serial_init_port(&serial4_data); -} #else #define board_mux NULL - -static inline void board_serial_init(void) -{ - omap_serial_init(); -} #endif static void omap4_sdp4430_wifi_mux_init(void) @@ -954,7 +888,7 @@ static void __init omap_4430sdp_init(void) omap4_i2c_init(); omap_sfh7741prox_init(); platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices)); - board_serial_init(); + omap_serial_init(); omap_sdrc_init(NULL, NULL); omap4_sdp4430_wifi_init(); omap4_twl6030_hsmmc_init(mmc); diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 63b54163b99..a508ed5cc89 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -69,7 +69,6 @@ static void __init omap_generic_init(void) if (node) irq_domain_add_simple(node, 0); - omap_serial_init(); omap_sdrc_init(NULL, NULL); of_platform_populate(NULL, omap_dt_match_table, NULL, NULL); diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index bebd3d84365..118f38c4b37 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -644,15 +644,15 @@ static inline void board_serial_init(void) bdata.pads_cnt = 0; bdata.id = 0; - omap_serial_init_port(&bdata); + omap_serial_init_port(&bdata, NULL); bdata.id = 1; - omap_serial_init_port(&bdata); + omap_serial_init_port(&bdata, NULL); bdata.id = 2; bdata.pads = serial2_pads; bdata.pads_cnt = ARRAY_SIZE(serial2_pads); - omap_serial_init_port(&bdata); + omap_serial_init_port(&bdata, NULL); } #else diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c index b6f114436db..ea45f583510 100644 --- a/arch/arm/mach-omap2/board-omap4panda.c +++ b/arch/arm/mach-omap2/board-omap4panda.c @@ -364,74 +364,8 @@ static struct omap_board_mux board_mux[] __initdata = { { .reg_offset = OMAP_MUX_TERMINATOR }, }; -static struct omap_device_pad serial2_pads[] __initdata = { - OMAP_MUX_STATIC("uart2_cts.uart2_cts", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rts.uart2_rts", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_rx.uart2_rx", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart2_tx.uart2_tx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial3_pads[] __initdata = { - OMAP_MUX_STATIC("uart3_cts_rctx.uart3_cts_rctx", - OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rts_sd.uart3_rts_sd", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_rx_irrx.uart3_rx_irrx", - OMAP_PIN_INPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart3_tx_irtx.uart3_tx_irtx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_device_pad serial4_pads[] __initdata = { - OMAP_MUX_STATIC("uart4_rx.uart4_rx", - OMAP_PIN_INPUT | OMAP_MUX_MODE0), - OMAP_MUX_STATIC("uart4_tx.uart4_tx", - OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), -}; - -static struct omap_board_data serial2_data __initdata = { - .id = 1, - .pads = serial2_pads, - .pads_cnt = ARRAY_SIZE(serial2_pads), -}; - -static struct omap_board_data serial3_data __initdata = { - .id = 2, - .pads = serial3_pads, - .pads_cnt = ARRAY_SIZE(serial3_pads), -}; - -static struct omap_board_data serial4_data __initdata = { - .id = 3, - .pads = serial4_pads, - .pads_cnt = ARRAY_SIZE(serial4_pads), -}; - -static inline void board_serial_init(void) -{ - struct omap_board_data bdata; - bdata.flags = 0; - bdata.pads = NULL; - bdata.pads_cnt = 0; - bdata.id = 0; - /* pass dummy data for UART1 */ - omap_serial_init_port(&bdata); - - omap_serial_init_port(&serial2_data); - omap_serial_init_port(&serial3_data); - omap_serial_init_port(&serial4_data); -} #else #define board_mux NULL - -static inline void board_serial_init(void) -{ - omap_serial_init(); -} #endif /* Display DVI */ @@ -562,7 +496,7 @@ static void __init omap4_panda_init(void) omap4_panda_i2c_init(); platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices)); platform_device_register(&omap_vwlan_device); - board_serial_init(); + omap_serial_init(); omap_sdrc_init(NULL, NULL); omap4_twl6030_hsmmc_init(mmc); omap4_ehci_init(); diff --git a/arch/arm/mach-omap2/board-ti8168evm.c b/arch/arm/mach-omap2/board-ti8168evm.c index 8402b39b284..b236fcc023a 100644 --- a/arch/arm/mach-omap2/board-ti8168evm.c +++ b/arch/arm/mach-omap2/board-ti8168evm.c @@ -35,17 +35,12 @@ static void __init ti8168_evm_init(void) omap_board_config_size = ARRAY_SIZE(ti8168_evm_config); } -static void __init ti8168_evm_map_io(void) -{ - omapti816x_map_common_io(); -} - MACHINE_START(TI8168EVM, "ti8168evm") /* Maintainer: Texas Instruments */ .atag_offset = 0x100, - .map_io = ti8168_evm_map_io, - .init_early = ti816x_init_early, - .init_irq = ti816x_init_irq, + .map_io = ti81xx_map_io, + .init_early = ti81xx_init_early, + .init_irq = ti81xx_init_irq, .timer = &omap3_timer, .init_machine = ti8168_evm_init, MACHINE_END diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 1f3481f8d69..f57ed5baecc 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -35,7 +35,7 @@ #include "cm-regbits-24xx.h" #include "cm-regbits-34xx.h" -u8 cpu_mask; +u16 cpu_mask; /* * clkdm_control: if true, then when a clock is enabled in the diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h index 2311bc21722..b8c2a686481 100644 --- a/arch/arm/mach-omap2/clock.h +++ b/arch/arm/mach-omap2/clock.h @@ -132,7 +132,7 @@ void omap2_clk_print_new_rates(const char *hfclkin_ck_name, const char *core_ck_name, const char *mpu_ck_name); -extern u8 cpu_mask; +extern u16 cpu_mask; extern const struct clkops clkops_omap2_dflt_wait; extern const struct clkops clkops_dummy; diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c index 5d0064a4fb5..60424f41156 100644 --- a/arch/arm/mach-omap2/clock3xxx_data.c +++ b/arch/arm/mach-omap2/clock3xxx_data.c @@ -3517,6 +3517,10 @@ int __init omap3xxx_clk_init(void) } else if (cpu_is_ti816x()) { cpu_mask = RATE_IN_TI816X; cpu_clkflg = CK_TI816X; + } else if (cpu_is_am33xx()) { + cpu_mask = RATE_IN_AM33XX; + } else if (cpu_is_ti814x()) { + cpu_mask = RATE_IN_TI814X; } else if (cpu_is_omap34xx()) { if (omap_rev() == OMAP3430_REV_ES1_0) { cpu_mask = RATE_IN_3430ES1; @@ -3600,7 +3604,7 @@ int __init omap3xxx_clk_init(void) * Lock DPLL5 -- here only until other device init code can * handle this */ - if (!cpu_is_ti816x() && (omap_rev() >= OMAP3430_REV_ES2_0)) + if (!cpu_is_ti81xx() && (omap_rev() >= OMAP3430_REV_ES2_0)) omap3_clk_lock_dpll5(); /* Avoid sleeping during omap3_core_dpll_m2_set_rate() */ diff --git a/arch/arm/mach-omap2/common.c b/arch/arm/mach-omap2/common.c index 684b8a7cd40..aaf421178c9 100644 --- a/arch/arm/mach-omap2/common.c +++ b/arch/arm/mach-omap2/common.c @@ -110,23 +110,49 @@ void __init omap3_map_io(void) /* * Adjust TAP register base such that omap3_check_revision accesses the correct - * TI816X register for checking device ID (it adds 0x204 to tap base while - * TI816X DEVICE ID register is at offset 0x600 from control base). + * TI81XX register for checking device ID (it adds 0x204 to tap base while + * TI81XX DEVICE ID register is at offset 0x600 from control base). */ -#define TI816X_TAP_BASE (TI816X_CTRL_BASE + \ - TI816X_CONTROL_DEVICE_ID - 0x204) +#define TI81XX_TAP_BASE (TI81XX_CTRL_BASE + \ + TI81XX_CONTROL_DEVICE_ID - 0x204) -static struct omap_globals ti816x_globals = { +static struct omap_globals ti81xx_globals = { .class = OMAP343X_CLASS, - .tap = OMAP2_L4_IO_ADDRESS(TI816X_TAP_BASE), - .ctrl = OMAP2_L4_IO_ADDRESS(TI816X_CTRL_BASE), - .prm = OMAP2_L4_IO_ADDRESS(TI816X_PRCM_BASE), - .cm = OMAP2_L4_IO_ADDRESS(TI816X_PRCM_BASE), + .tap = OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE), + .ctrl = OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE), + .prm = OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), + .cm = OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), }; -void __init omap2_set_globals_ti816x(void) +void __init omap2_set_globals_ti81xx(void) { - __omap2_set_globals(&ti816x_globals); + __omap2_set_globals(&ti81xx_globals); +} + +void __init ti81xx_map_io(void) +{ + omapti81xx_map_common_io(); +} + +#define AM33XX_TAP_BASE (AM33XX_CTRL_BASE + \ + TI81XX_CONTROL_DEVICE_ID - 0x204) + +static struct omap_globals am33xx_globals = { + .class = AM335X_CLASS, + .tap = AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE), + .ctrl = AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE), + .prm = AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE), + .cm = AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRCM_BASE), +}; + +void __init omap2_set_globals_am33xx(void) +{ + __omap2_set_globals(&am33xx_globals); +} + +void __init am33xx_map_io(void) +{ + omapam33xx_map_common_io(); } #endif diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 0911e843f07..90bd2ae8559 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -54,10 +54,18 @@ static inline void omap34xx_map_common_io(void) } #endif -#ifdef CONFIG_SOC_OMAPTI816X -extern void omapti816x_map_common_io(void); +#ifdef CONFIG_SOC_OMAPTI81XX +extern void omapti81xx_map_common_io(void); #else -static inline void omapti816x_map_common_io(void) +static inline void omapti81xx_map_common_io(void) +{ +} +#endif + +#ifdef CONFIG_SOC_OMAPAM33XX +extern void omapam33xx_map_common_io(void); +#else +static inline void omapam33xx_map_common_io(void) { } #endif @@ -84,7 +92,7 @@ void omap35xx_init_early(void); void omap3630_init_early(void); void omap3_init_early(void); /* Do not use this one */ void am35xx_init_early(void); -void ti816x_init_early(void); +void ti81xx_init_early(void); void omap4430_init_early(void); /* @@ -108,7 +116,8 @@ void omap2_set_globals_242x(void); void omap2_set_globals_243x(void); void omap2_set_globals_3xxx(void); void omap2_set_globals_443x(void); -void omap2_set_globals_ti816x(void); +void omap2_set_globals_ti81xx(void); +void omap2_set_globals_am33xx(void); /* These get called from omap2_set_globals_xxxx(), do not call these */ void omap2_set_globals_tap(struct omap_globals *); @@ -119,7 +128,9 @@ void omap2_set_globals_prcm(struct omap_globals *); void omap242x_map_io(void); void omap243x_map_io(void); void omap3_map_io(void); +void am33xx_map_io(void); void omap4_map_io(void); +void ti81xx_map_io(void); /** * omap_test_timeout - busy-loop, testing a condition @@ -148,7 +159,7 @@ extern struct device *omap4_get_dsp_device(void); void omap2_init_irq(void); void omap3_init_irq(void); -void ti816x_init_irq(void); +void ti81xx_init_irq(void); extern int omap_irq_pending(void); void omap_intc_save_context(void); void omap_intc_restore_context(void); diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h index d4ef75d5a38..0ba68d3764b 100644 --- a/arch/arm/mach-omap2/control.h +++ b/arch/arm/mach-omap2/control.h @@ -52,8 +52,8 @@ #define OMAP343X_CONTROL_PADCONFS_WKUP 0xa00 #define OMAP343X_CONTROL_GENERAL_WKUP 0xa60 -/* TI816X spefic control submodules */ -#define TI816X_CONTROL_DEVCONF 0x600 +/* TI81XX spefic control submodules */ +#define TI81XX_CONTROL_DEVCONF 0x600 /* Control register offsets - read/write with omap_ctrl_{read,write}{bwl}() */ @@ -244,8 +244,8 @@ #define OMAP3_PADCONF_SAD2D_MSTANDBY 0x250 #define OMAP3_PADCONF_SAD2D_IDLEACK 0x254 -/* TI816X CONTROL_DEVCONF register offsets */ -#define TI816X_CONTROL_DEVICE_ID (TI816X_CONTROL_DEVCONF + 0x000) +/* TI81XX CONTROL_DEVCONF register offsets */ +#define TI81XX_CONTROL_DEVICE_ID (TI81XX_CONTROL_DEVCONF + 0x000) /* * REVISIT: This list of registers is not comprehensive - there are more diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c index 1f71ebb6c12..464cffde58f 100644 --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -31,7 +31,6 @@ #include <plat/irqs.h> #include "powerdomain.h" #include "clockdomain.h" -#include <plat/serial.h> #include "pm.h" #include "control.h" @@ -260,11 +259,6 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev, struct omap3_idle_statedata *cx; int ret; - if (!omap3_can_sleep()) { - new_state_idx = drv->safe_state_index; - goto select_state; - } - /* * Prevent idle completely if CAM is active. * CAM does not have wakeup capability in OMAP3. diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index 27ad722df63..6c5826605ea 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -226,7 +226,7 @@ static void __init omap4_check_features(void) } } -static void __init ti816x_check_features(void) +static void __init ti81xx_check_features(void) { omap_features = OMAP3_HAS_NEON; } @@ -340,6 +340,29 @@ static void __init omap3_check_revision(const char **cpu_rev) break; } break; + case 0xb944: + omap_revision = AM335X_REV_ES1_0; + *cpu_rev = "1.0"; + case 0xb8f2: + switch (rev) { + case 0: + /* FALLTHROUGH */ + case 1: + omap_revision = TI8148_REV_ES1_0; + *cpu_rev = "1.0"; + break; + case 2: + omap_revision = TI8148_REV_ES2_0; + *cpu_rev = "2.0"; + break; + case 3: + /* FALLTHROUGH */ + default: + omap_revision = TI8148_REV_ES2_1; + *cpu_rev = "2.1"; + break; + } + break; default: /* Unknown default to latest silicon rev as default */ omap_revision = OMAP3630_REV_ES1_2; @@ -367,7 +390,7 @@ static void __init omap4_check_revision(void) * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0 * Use ARM register to detect the correct ES version */ - if (!rev && (hawkeye != 0xb94e)) { + if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) { idcode = read_cpuid(CPUID_ID); rev = (idcode & 0xf) - 1; } @@ -389,8 +412,11 @@ static void __init omap4_check_revision(void) omap_revision = OMAP4430_REV_ES2_1; break; case 4: - default: omap_revision = OMAP4430_REV_ES2_2; + break; + case 6: + default: + omap_revision = OMAP4430_REV_ES2_3; } break; case 0xb94e: @@ -401,9 +427,17 @@ static void __init omap4_check_revision(void) break; } break; + case 0xb975: + switch (rev) { + case 0: + default: + omap_revision = OMAP4470_REV_ES1_0; + break; + } + break; default: /* Unknown default to latest silicon rev as default */ - omap_revision = OMAP4430_REV_ES2_2; + omap_revision = OMAP4430_REV_ES2_3; } pr_info("OMAP%04x ES%d.%d\n", omap_rev() >> 16, @@ -432,6 +466,10 @@ static void __init omap3_cpuinfo(const char *cpu_rev) cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505"; } else if (cpu_is_ti816x()) { cpu_name = "TI816X"; + } else if (cpu_is_am335x()) { + cpu_name = "AM335X"; + } else if (cpu_is_ti814x()) { + cpu_name = "TI814X"; } else if (omap3_has_iva() && omap3_has_sgx()) { /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ cpu_name = "OMAP3430/3530"; @@ -472,11 +510,11 @@ void __init omap2_check_revision(void) } else if (cpu_is_omap34xx()) { omap3_check_revision(&cpu_rev); - /* TI816X doesn't have feature register */ - if (!cpu_is_ti816x()) + /* TI81XX doesn't have feature register */ + if (!cpu_is_ti81xx()) omap3_check_features(); else - ti816x_check_features(); + ti81xx_check_features(); omap3_cpuinfo(cpu_rev); return; diff --git a/arch/arm/mach-omap2/include/mach/debug-macro.S b/arch/arm/mach-omap2/include/mach/debug-macro.S index 13f98e59cfe..cdfc2a1f0e7 100644 --- a/arch/arm/mach-omap2/include/mach/debug-macro.S +++ b/arch/arm/mach-omap2/include/mach/debug-macro.S @@ -66,11 +66,11 @@ omap_uart_lsr: .word 0 beq 34f @ configure OMAP3UART4 cmp \rp, #OMAP4UART4 @ only on 44xx beq 44f @ configure OMAP4UART4 - cmp \rp, #TI816XUART1 @ ti816x UART offsets different + cmp \rp, #TI81XXUART1 @ ti81Xx UART offsets different beq 81f @ configure UART1 - cmp \rp, #TI816XUART2 @ ti816x UART offsets different + cmp \rp, #TI81XXUART2 @ ti81Xx UART offsets different beq 82f @ configure UART2 - cmp \rp, #TI816XUART3 @ ti816x UART offsets different + cmp \rp, #TI81XXUART3 @ ti81Xx UART offsets different beq 83f @ configure UART3 cmp \rp, #ZOOM_UART @ only on zoom2/3 beq 95f @ configure ZOOM_UART @@ -94,11 +94,11 @@ omap_uart_lsr: .word 0 b 98f 44: mov \rp, #UART_OFFSET(OMAP4_UART4_BASE) b 98f -81: mov \rp, #UART_OFFSET(TI816X_UART1_BASE) +81: mov \rp, #UART_OFFSET(TI81XX_UART1_BASE) b 98f -82: mov \rp, #UART_OFFSET(TI816X_UART2_BASE) +82: mov \rp, #UART_OFFSET(TI81XX_UART2_BASE) b 98f -83: mov \rp, #UART_OFFSET(TI816X_UART3_BASE) +83: mov \rp, #UART_OFFSET(TI81XX_UART3_BASE) b 98f 95: ldr \rp, =ZOOM_UART_BASE diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 65843390e7f..3f174d51f67 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -176,14 +176,31 @@ static struct map_desc omap34xx_io_desc[] __initdata = { }; #endif -#ifdef CONFIG_SOC_OMAPTI816X -static struct map_desc omapti816x_io_desc[] __initdata = { +#ifdef CONFIG_SOC_OMAPTI81XX +static struct map_desc omapti81xx_io_desc[] __initdata = { + { + .virtual = L4_34XX_VIRT, + .pfn = __phys_to_pfn(L4_34XX_PHYS), + .length = L4_34XX_SIZE, + .type = MT_DEVICE + } +}; +#endif + +#ifdef CONFIG_SOC_OMAPAM33XX +static struct map_desc omapam33xx_io_desc[] __initdata = { { .virtual = L4_34XX_VIRT, .pfn = __phys_to_pfn(L4_34XX_PHYS), .length = L4_34XX_SIZE, .type = MT_DEVICE }, + { + .virtual = L4_WK_AM33XX_VIRT, + .pfn = __phys_to_pfn(L4_WK_AM33XX_PHYS), + .length = L4_WK_AM33XX_SIZE, + .type = MT_DEVICE + } }; #endif @@ -272,10 +289,17 @@ void __init omap34xx_map_common_io(void) } #endif -#ifdef CONFIG_SOC_OMAPTI816X -void __init omapti816x_map_common_io(void) +#ifdef CONFIG_SOC_OMAPTI81XX +void __init omapti81xx_map_common_io(void) +{ + iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc)); +} +#endif + +#ifdef CONFIG_SOC_OMAPAM33XX +void __init omapam33xx_map_common_io(void) { - iotable_init(omapti816x_io_desc, ARRAY_SIZE(omapti816x_io_desc)); + iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc)); } #endif @@ -427,9 +451,9 @@ void __init am35xx_init_early(void) omap3_init_early(); } -void __init ti816x_init_early(void) +void __init ti81xx_init_early(void) { - omap2_set_globals_ti816x(); + omap2_set_globals_ti81xx(); omap_common_init_early(); omap3xxx_voltagedomains_init(); omap3xxx_powerdomains_init(); diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c index 42b1d659191..1fef061f792 100644 --- a/arch/arm/mach-omap2/irq.c +++ b/arch/arm/mach-omap2/irq.c @@ -193,7 +193,7 @@ void __init omap3_init_irq(void) omap_init_irq(OMAP34XX_IC_BASE, 96); } -void __init ti816x_init_irq(void) +void __init ti81xx_init_irq(void) { omap_init_irq(OMAP34XX_IC_BASE, 128); } diff --git a/arch/arm/mach-omap2/opp2xxx.h b/arch/arm/mach-omap2/opp2xxx.h index 8affc66a92c..8fae534eb15 100644 --- a/arch/arm/mach-omap2/opp2xxx.h +++ b/arch/arm/mach-omap2/opp2xxx.h @@ -51,7 +51,7 @@ struct prcm_config { unsigned long cm_clksel2_pll; /* dpllx1 or x2 out */ unsigned long cm_clksel_mdm; /* modem dividers 2430 only */ unsigned long base_sdrc_rfr; /* base refresh timing for a set */ - unsigned char flags; + unsigned short flags; }; diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index ef8595c8029..b8822f8b289 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -30,7 +30,6 @@ #include <linux/irq.h> #include <linux/time.h> #include <linux/gpio.h> -#include <linux/console.h> #include <asm/mach/time.h> #include <asm/mach/irq.h> @@ -127,27 +126,11 @@ static void omap2_enter_full_retention(void) if (omap_irq_pending()) goto no_sleep; - /* Block console output in case it is on one of the OMAP UARTs */ - if (!is_suspending()) - if (!console_trylock()) - goto no_sleep; - - omap_uart_prepare_idle(0); - omap_uart_prepare_idle(1); - omap_uart_prepare_idle(2); - /* Jump to SRAM suspend code */ omap2_sram_suspend(sdrc_read_reg(SDRC_DLLA_CTRL), OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL), OMAP_SDRC_REGADDR(SDRC_POWER)); - omap_uart_resume_idle(2); - omap_uart_resume_idle(1); - omap_uart_resume_idle(0); - - if (!is_suspending()) - console_unlock(); - no_sleep: omap2_gpio_resume_after_idle(); @@ -239,8 +222,6 @@ static int omap2_can_sleep(void) { if (omap2_fclks_active()) return 0; - if (!omap_uart_can_sleep()) - return 0; if (osc_ck->usecount > 1) return 0; if (omap_dma_running()) @@ -291,7 +272,6 @@ static int omap2_pm_suspend(void) mir1 = omap_readl(0x480fe0a4); omap_writel(1 << 5, 0x480fe0ac); - omap_uart_prepare_suspend(); omap2_enter_full_retention(); omap_writel(mir1, 0x480fe0a4); diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 53b5b1a71e0..fc698757892 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -28,7 +28,6 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/console.h> #include <trace/events/power.h> #include <asm/suspend.h> @@ -36,7 +35,6 @@ #include <plat/sram.h> #include "clockdomain.h" #include "powerdomain.h" -#include <plat/serial.h> #include <plat/sdrc.h> #include <plat/prcm.h> #include <plat/gpmc.h> @@ -54,15 +52,6 @@ #ifdef CONFIG_SUSPEND static suspend_state_t suspend_state = PM_SUSPEND_ON; -static inline bool is_suspending(void) -{ - return (suspend_state != PM_SUSPEND_ON) && console_suspend_enabled; -} -#else -static inline bool is_suspending(void) -{ - return false; -} #endif /* pm34xx errata defined in pm.h */ @@ -337,20 +326,11 @@ void omap_sram_idle(void) omap3_enable_io_chain(); } - /* Block console output in case it is on one of the OMAP UARTs */ - if (!is_suspending()) - if (per_next_state < PWRDM_POWER_ON || - core_next_state < PWRDM_POWER_ON) - if (!console_trylock()) - goto console_still_active; - pwrdm_pre_transition(); /* PER */ if (per_next_state < PWRDM_POWER_ON) { per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0; - omap_uart_prepare_idle(2); - omap_uart_prepare_idle(3); omap2_gpio_prepare_for_idle(per_going_off); if (per_next_state == PWRDM_POWER_OFF) omap3_per_save_context(); @@ -358,8 +338,6 @@ void omap_sram_idle(void) /* CORE */ if (core_next_state < PWRDM_POWER_ON) { - omap_uart_prepare_idle(0); - omap_uart_prepare_idle(1); if (core_next_state == PWRDM_POWER_OFF) { omap3_core_save_context(); omap3_cm_save_context(); @@ -408,8 +386,6 @@ void omap_sram_idle(void) omap3_sram_restore_context(); omap2_sms_restore_context(); } - omap_uart_resume_idle(0); - omap_uart_resume_idle(1); if (core_next_state == PWRDM_POWER_OFF) omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK, OMAP3430_GR_MOD, @@ -425,14 +401,8 @@ void omap_sram_idle(void) omap2_gpio_resume_after_idle(); if (per_prev_state == PWRDM_POWER_OFF) omap3_per_restore_context(); - omap_uart_resume_idle(2); - omap_uart_resume_idle(3); } - if (!is_suspending()) - console_unlock(); - -console_still_active: /* Disable IO-PAD and IO-CHAIN wakeup */ if (omap3_has_io_wakeup() && (per_next_state < PWRDM_POWER_ON || @@ -446,21 +416,11 @@ console_still_active: clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]); } -int omap3_can_sleep(void) -{ - if (!omap_uart_can_sleep()) - return 0; - return 1; -} - static void omap3_pm_idle(void) { local_irq_disable(); local_fiq_disable(); - if (!omap3_can_sleep()) - goto out; - if (omap_irq_pending() || need_resched()) goto out; @@ -494,7 +454,6 @@ static int omap3_pm_suspend(void) goto restore; } - omap_uart_prepare_suspend(); omap3_intc_suspend(); omap_sram_idle(); @@ -541,7 +500,6 @@ static int omap3_pm_begin(suspend_state_t state) { disable_hlt(); suspend_state = state; - omap_uart_enable_irqs(0); omap_prcm_irq_prepare(); return 0; } @@ -549,7 +507,6 @@ static int omap3_pm_begin(suspend_state_t state) static void omap3_pm_end(void) { suspend_state = PM_SUSPEND_ON; - omap_uart_enable_irqs(1); enable_hlt(); return; } diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 42c326732a2..247d89478f2 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -19,26 +19,21 @@ */ #include <linux/kernel.h> #include <linux/init.h> -#include <linux/serial_reg.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/slab.h> -#include <linux/serial_8250.h> #include <linux/pm_runtime.h> #include <linux/console.h> -#ifdef CONFIG_SERIAL_OMAP #include <plat/omap-serial.h> -#endif - #include "common.h" #include <plat/board.h> -#include <plat/clock.h> #include <plat/dma.h> #include <plat/omap_hwmod.h> #include <plat/omap_device.h> +#include <plat/omap-pm.h> #include "prm2xxx_3xxx.h" #include "pm.h" @@ -47,603 +42,226 @@ #include "control.h" #include "mux.h" -#define UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV 0x52 -#define UART_OMAP_WER 0x17 /* Wake-up enable register */ - -#define UART_ERRATA_FIFO_FULL_ABORT (0x1 << 0) -#define UART_ERRATA_i202_MDR1_ACCESS (0x1 << 1) - /* - * NOTE: By default the serial timeout is disabled as it causes lost characters - * over the serial ports. This means that the UART clocks will stay on until - * disabled via sysfs. This also causes that any deeper omap sleep states are - * blocked. + * NOTE: By default the serial auto_suspend timeout is disabled as it causes + * lost characters over the serial ports. This means that the UART clocks will + * stay on until power/autosuspend_delay is set for the uart from sysfs. + * This also causes that any deeper omap sleep states are blocked. */ -#define DEFAULT_TIMEOUT 0 +#define DEFAULT_AUTOSUSPEND_DELAY -1 #define MAX_UART_HWMOD_NAME_LEN 16 struct omap_uart_state { int num; int can_sleep; - struct timer_list timer; - u32 timeout; - - void __iomem *wk_st; - void __iomem *wk_en; - u32 wk_mask; - u32 padconf; - u32 dma_enabled; - - struct clk *ick; - struct clk *fck; - int clocked; - - int irq; - int regshift; - int irqflags; - void __iomem *membase; - resource_size_t mapbase; struct list_head node; struct omap_hwmod *oh; struct platform_device *pdev; - - u32 errata; -#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) - int context_valid; - - /* Registers to be saved/restored for OFF-mode */ - u16 dll; - u16 dlh; - u16 ier; - u16 sysc; - u16 scr; - u16 wer; - u16 mcr; -#endif }; static LIST_HEAD(uart_list); static u8 num_uarts; +static u8 console_uart_id = -1; +static u8 no_console_suspend; +static u8 uart_debug; + +#define DEFAULT_RXDMA_POLLRATE 1 /* RX DMA polling rate (us) */ +#define DEFAULT_RXDMA_BUFSIZE 4096 /* RX DMA buffer size */ +#define DEFAULT_RXDMA_TIMEOUT (3 * HZ)/* RX DMA timeout (jiffies) */ + +static struct omap_uart_port_info omap_serial_default_info[] __initdata = { + { + .dma_enabled = false, + .dma_rx_buf_size = DEFAULT_RXDMA_BUFSIZE, + .dma_rx_poll_rate = DEFAULT_RXDMA_POLLRATE, + .dma_rx_timeout = DEFAULT_RXDMA_TIMEOUT, + .autosuspend_timeout = DEFAULT_AUTOSUSPEND_DELAY, + }, +}; -static inline unsigned int __serial_read_reg(struct uart_port *up, - int offset) -{ - offset <<= up->regshift; - return (unsigned int)__raw_readb(up->membase + offset); -} - -static inline unsigned int serial_read_reg(struct omap_uart_state *uart, - int offset) +#ifdef CONFIG_PM +static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable) { - offset <<= uart->regshift; - return (unsigned int)__raw_readb(uart->membase + offset); -} + struct omap_device *od = to_omap_device(pdev); -static inline void __serial_write_reg(struct uart_port *up, int offset, - int value) -{ - offset <<= up->regshift; - __raw_writeb(value, up->membase + offset); -} + if (!od) + return; -static inline void serial_write_reg(struct omap_uart_state *uart, int offset, - int value) -{ - offset <<= uart->regshift; - __raw_writeb(value, uart->membase + offset); + if (enable) + omap_hwmod_enable_wakeup(od->hwmods[0]); + else + omap_hwmod_disable_wakeup(od->hwmods[0]); } /* - * Internal UARTs need to be initialized for the 8250 autoconfig to work - * properly. Note that the TX watermark initialization may not be needed - * once the 8250.c watermark handling code is merged. + * Errata i291: [UART]:Cannot Acknowledge Idle Requests + * in Smartidle Mode When Configured for DMA Operations. + * WA: configure uart in force idle mode. */ - -static inline void __init omap_uart_reset(struct omap_uart_state *uart) +static void omap_uart_set_noidle(struct platform_device *pdev) { - serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); - serial_write_reg(uart, UART_OMAP_SCR, 0x08); - serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE); -} - -#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) + struct omap_device *od = to_omap_device(pdev); -/* - * Work Around for Errata i202 (3430 - 1.12, 3630 - 1.6) - * The access to uart register after MDR1 Access - * causes UART to corrupt data. - * - * Need a delay = - * 5 L4 clock cycles + 5 UART functional clock cycle (@48MHz = ~0.2uS) - * give 10 times as much - */ -static void omap_uart_mdr1_errataset(struct omap_uart_state *uart, u8 mdr1_val, - u8 fcr_val) -{ - u8 timeout = 255; - - serial_write_reg(uart, UART_OMAP_MDR1, mdr1_val); - udelay(2); - serial_write_reg(uart, UART_FCR, fcr_val | UART_FCR_CLEAR_XMIT | - UART_FCR_CLEAR_RCVR); - /* - * Wait for FIFO to empty: when empty, RX_FIFO_E bit is 0 and - * TX_FIFO_E bit is 1. - */ - while (UART_LSR_THRE != (serial_read_reg(uart, UART_LSR) & - (UART_LSR_THRE | UART_LSR_DR))) { - timeout--; - if (!timeout) { - /* Should *never* happen. we warn and carry on */ - dev_crit(&uart->pdev->dev, "Errata i202: timedout %x\n", - serial_read_reg(uart, UART_LSR)); - break; - } - udelay(1); - } + omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_NO); } -static void omap_uart_save_context(struct omap_uart_state *uart) +static void omap_uart_set_forceidle(struct platform_device *pdev) { - u16 lcr = 0; + struct omap_device *od = to_omap_device(pdev); - if (!enable_off_mode) - return; - - lcr = serial_read_reg(uart, UART_LCR); - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); - uart->dll = serial_read_reg(uart, UART_DLL); - uart->dlh = serial_read_reg(uart, UART_DLM); - serial_write_reg(uart, UART_LCR, lcr); - uart->ier = serial_read_reg(uart, UART_IER); - uart->sysc = serial_read_reg(uart, UART_OMAP_SYSC); - uart->scr = serial_read_reg(uart, UART_OMAP_SCR); - uart->wer = serial_read_reg(uart, UART_OMAP_WER); - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A); - uart->mcr = serial_read_reg(uart, UART_MCR); - serial_write_reg(uart, UART_LCR, lcr); - - uart->context_valid = 1; + omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_FORCE); } -static void omap_uart_restore_context(struct omap_uart_state *uart) -{ - u16 efr = 0; - - if (!enable_off_mode) - return; - - if (!uart->context_valid) - return; - - uart->context_valid = 0; - - if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS) - omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_DISABLE, 0xA0); - else - serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); - - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); - efr = serial_read_reg(uart, UART_EFR); - serial_write_reg(uart, UART_EFR, UART_EFR_ECB); - serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */ - serial_write_reg(uart, UART_IER, 0x0); - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); - serial_write_reg(uart, UART_DLL, uart->dll); - serial_write_reg(uart, UART_DLM, uart->dlh); - serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */ - serial_write_reg(uart, UART_IER, uart->ier); - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A); - serial_write_reg(uart, UART_MCR, uart->mcr); - serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); - serial_write_reg(uart, UART_EFR, efr); - serial_write_reg(uart, UART_LCR, UART_LCR_WLEN8); - serial_write_reg(uart, UART_OMAP_SCR, uart->scr); - serial_write_reg(uart, UART_OMAP_WER, uart->wer); - serial_write_reg(uart, UART_OMAP_SYSC, uart->sysc); - - if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS) - omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_16X_MODE, 0xA1); - else - /* UART 16x mode */ - serial_write_reg(uart, UART_OMAP_MDR1, - UART_OMAP_MDR1_16X_MODE); -} #else -static inline void omap_uart_save_context(struct omap_uart_state *uart) {} -static inline void omap_uart_restore_context(struct omap_uart_state *uart) {} -#endif /* CONFIG_PM && CONFIG_ARCH_OMAP3 */ - -static inline void omap_uart_enable_clocks(struct omap_uart_state *uart) -{ - if (uart->clocked) - return; - - omap_device_enable(uart->pdev); - uart->clocked = 1; - omap_uart_restore_context(uart); -} - -#ifdef CONFIG_PM - -static inline void omap_uart_disable_clocks(struct omap_uart_state *uart) -{ - if (!uart->clocked) - return; - - omap_uart_save_context(uart); - uart->clocked = 0; - omap_device_idle(uart->pdev); -} - -static void omap_uart_enable_wakeup(struct omap_uart_state *uart) -{ - /* Set wake-enable bit */ - if (uart->wk_en && uart->wk_mask) { - u32 v = __raw_readl(uart->wk_en); - v |= uart->wk_mask; - __raw_writel(v, uart->wk_en); - } - - /* Ensure IOPAD wake-enables are set */ - if (cpu_is_omap34xx() && uart->padconf) { - u16 v = omap_ctrl_readw(uart->padconf); - v |= OMAP3_PADCONF_WAKEUPENABLE0; - omap_ctrl_writew(v, uart->padconf); - } -} - -static void omap_uart_disable_wakeup(struct omap_uart_state *uart) -{ - /* Clear wake-enable bit */ - if (uart->wk_en && uart->wk_mask) { - u32 v = __raw_readl(uart->wk_en); - v &= ~uart->wk_mask; - __raw_writel(v, uart->wk_en); - } - - /* Ensure IOPAD wake-enables are cleared */ - if (cpu_is_omap34xx() && uart->padconf) { - u16 v = omap_ctrl_readw(uart->padconf); - v &= ~OMAP3_PADCONF_WAKEUPENABLE0; - omap_ctrl_writew(v, uart->padconf); - } -} - -static void omap_uart_smart_idle_enable(struct omap_uart_state *uart, - int enable) -{ - u8 idlemode; - - if (enable) { - /** - * Errata 2.15: [UART]:Cannot Acknowledge Idle Requests - * in Smartidle Mode When Configured for DMA Operations. - */ - if (uart->dma_enabled) - idlemode = HWMOD_IDLEMODE_FORCE; - else - idlemode = HWMOD_IDLEMODE_SMART; - } else { - idlemode = HWMOD_IDLEMODE_NO; - } - - omap_hwmod_set_slave_idlemode(uart->oh, idlemode); -} - -static void omap_uart_block_sleep(struct omap_uart_state *uart) -{ - omap_uart_enable_clocks(uart); - - omap_uart_smart_idle_enable(uart, 0); - uart->can_sleep = 0; - if (uart->timeout) - mod_timer(&uart->timer, jiffies + uart->timeout); - else - del_timer(&uart->timer); -} - -static void omap_uart_allow_sleep(struct omap_uart_state *uart) -{ - if (device_may_wakeup(&uart->pdev->dev)) - omap_uart_enable_wakeup(uart); - else - omap_uart_disable_wakeup(uart); - - if (!uart->clocked) - return; - - omap_uart_smart_idle_enable(uart, 1); - uart->can_sleep = 1; - del_timer(&uart->timer); -} - -static void omap_uart_idle_timer(unsigned long data) -{ - struct omap_uart_state *uart = (struct omap_uart_state *)data; - - omap_uart_allow_sleep(uart); -} - -void omap_uart_prepare_idle(int num) -{ - struct omap_uart_state *uart; - - list_for_each_entry(uart, &uart_list, node) { - if (num == uart->num && uart->can_sleep) { - omap_uart_disable_clocks(uart); - return; - } - } -} - -void omap_uart_resume_idle(int num) -{ - struct omap_uart_state *uart; - - list_for_each_entry(uart, &uart_list, node) { - if (num == uart->num && uart->can_sleep) { - omap_uart_enable_clocks(uart); - - /* Check for IO pad wakeup */ - if (cpu_is_omap34xx() && uart->padconf) { - u16 p = omap_ctrl_readw(uart->padconf); - - if (p & OMAP3_PADCONF_WAKEUPEVENT0) - omap_uart_block_sleep(uart); - } - - /* Check for normal UART wakeup */ - if (__raw_readl(uart->wk_st) & uart->wk_mask) - omap_uart_block_sleep(uart); - return; - } - } -} - -void omap_uart_prepare_suspend(void) -{ - struct omap_uart_state *uart; - - list_for_each_entry(uart, &uart_list, node) { - omap_uart_allow_sleep(uart); - } -} - -int omap_uart_can_sleep(void) -{ - struct omap_uart_state *uart; - int can_sleep = 1; - - list_for_each_entry(uart, &uart_list, node) { - if (!uart->clocked) - continue; - - if (!uart->can_sleep) { - can_sleep = 0; - continue; - } - - /* This UART can now safely sleep. */ - omap_uart_allow_sleep(uart); - } - - return can_sleep; -} +static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable) +{} +static void omap_uart_set_noidle(struct platform_device *pdev) {} +static void omap_uart_set_forceidle(struct platform_device *pdev) {} +#endif /* CONFIG_PM */ -/** - * omap_uart_interrupt() - * - * This handler is used only to detect that *any* UART interrupt has - * occurred. It does _nothing_ to handle the interrupt. Rather, - * any UART interrupt will trigger the inactivity timer so the - * UART will not idle or sleep for its timeout period. - * - **/ -/* static int first_interrupt; */ -static irqreturn_t omap_uart_interrupt(int irq, void *dev_id) -{ - struct omap_uart_state *uart = dev_id; +#ifdef CONFIG_OMAP_MUX +static struct omap_device_pad default_uart1_pads[] __initdata = { + { + .name = "uart1_cts.uart1_cts", + .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + }, + { + .name = "uart1_rts.uart1_rts", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart1_tx.uart1_tx", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart1_rx.uart1_rx", + .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, + .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + .idle = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + }, +}; - omap_uart_block_sleep(uart); +static struct omap_device_pad default_uart2_pads[] __initdata = { + { + .name = "uart2_cts.uart2_cts", + .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + }, + { + .name = "uart2_rts.uart2_rts", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart2_tx.uart2_tx", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart2_rx.uart2_rx", + .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, + .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + .idle = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + }, +}; - return IRQ_NONE; -} +static struct omap_device_pad default_uart3_pads[] __initdata = { + { + .name = "uart3_cts_rctx.uart3_cts_rctx", + .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, + }, + { + .name = "uart3_rts_sd.uart3_rts_sd", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart3_tx_irtx.uart3_tx_irtx", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart3_rx_irrx.uart3_rx_irrx", + .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, + .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE0, + .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE0, + }, +}; -static void omap_uart_idle_init(struct omap_uart_state *uart) -{ - int ret; - - uart->can_sleep = 0; - uart->timeout = DEFAULT_TIMEOUT; - setup_timer(&uart->timer, omap_uart_idle_timer, - (unsigned long) uart); - if (uart->timeout) - mod_timer(&uart->timer, jiffies + uart->timeout); - omap_uart_smart_idle_enable(uart, 0); - - if (cpu_is_omap34xx() && !cpu_is_ti816x()) { - u32 mod = (uart->num > 1) ? OMAP3430_PER_MOD : CORE_MOD; - u32 wk_mask = 0; - u32 padconf = 0; - - /* XXX These PRM accesses do not belong here */ - uart->wk_en = OMAP34XX_PRM_REGADDR(mod, PM_WKEN1); - uart->wk_st = OMAP34XX_PRM_REGADDR(mod, PM_WKST1); - switch (uart->num) { - case 0: - wk_mask = OMAP3430_ST_UART1_MASK; - padconf = 0x182; - break; - case 1: - wk_mask = OMAP3430_ST_UART2_MASK; - padconf = 0x17a; - break; - case 2: - wk_mask = OMAP3430_ST_UART3_MASK; - padconf = 0x19e; - break; - case 3: - wk_mask = OMAP3630_ST_UART4_MASK; - padconf = 0x0d2; - break; - } - uart->wk_mask = wk_mask; - uart->padconf = padconf; - } else if (cpu_is_omap24xx()) { - u32 wk_mask = 0; - u32 wk_en = PM_WKEN1, wk_st = PM_WKST1; - - switch (uart->num) { - case 0: - wk_mask = OMAP24XX_ST_UART1_MASK; - break; - case 1: - wk_mask = OMAP24XX_ST_UART2_MASK; - break; - case 2: - wk_en = OMAP24XX_PM_WKEN2; - wk_st = OMAP24XX_PM_WKST2; - wk_mask = OMAP24XX_ST_UART3_MASK; - break; - } - uart->wk_mask = wk_mask; - if (cpu_is_omap2430()) { - uart->wk_en = OMAP2430_PRM_REGADDR(CORE_MOD, wk_en); - uart->wk_st = OMAP2430_PRM_REGADDR(CORE_MOD, wk_st); - } else if (cpu_is_omap2420()) { - uart->wk_en = OMAP2420_PRM_REGADDR(CORE_MOD, wk_en); - uart->wk_st = OMAP2420_PRM_REGADDR(CORE_MOD, wk_st); - } - } else { - uart->wk_en = NULL; - uart->wk_st = NULL; - uart->wk_mask = 0; - uart->padconf = 0; - } +static struct omap_device_pad default_omap36xx_uart4_pads[] __initdata = { + { + .name = "gpmc_wait2.uart4_tx", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "gpmc_wait3.uart4_rx", + .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, + .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE2, + .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE2, + }, +}; - uart->irqflags |= IRQF_SHARED; - ret = request_threaded_irq(uart->irq, NULL, omap_uart_interrupt, - IRQF_SHARED, "serial idle", (void *)uart); - WARN_ON(ret); -} +static struct omap_device_pad default_omap4_uart4_pads[] __initdata = { + { + .name = "uart4_tx.uart4_tx", + .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, + }, + { + .name = "uart4_rx.uart4_rx", + .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, + .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE0, + .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE0, + }, +}; -void omap_uart_enable_irqs(int enable) +static void omap_serial_fill_default_pads(struct omap_board_data *bdata) { - int ret; - struct omap_uart_state *uart; - - list_for_each_entry(uart, &uart_list, node) { - if (enable) { - pm_runtime_put_sync(&uart->pdev->dev); - ret = request_threaded_irq(uart->irq, NULL, - omap_uart_interrupt, - IRQF_SHARED, - "serial idle", - (void *)uart); - } else { - pm_runtime_get_noresume(&uart->pdev->dev); - free_irq(uart->irq, (void *)uart); + switch (bdata->id) { + case 0: + bdata->pads = default_uart1_pads; + bdata->pads_cnt = ARRAY_SIZE(default_uart1_pads); + break; + case 1: + bdata->pads = default_uart2_pads; + bdata->pads_cnt = ARRAY_SIZE(default_uart2_pads); + break; + case 2: + bdata->pads = default_uart3_pads; + bdata->pads_cnt = ARRAY_SIZE(default_uart3_pads); + break; + case 3: + if (cpu_is_omap44xx()) { + bdata->pads = default_omap4_uart4_pads; + bdata->pads_cnt = + ARRAY_SIZE(default_omap4_uart4_pads); + } else if (cpu_is_omap3630()) { + bdata->pads = default_omap36xx_uart4_pads; + bdata->pads_cnt = + ARRAY_SIZE(default_omap36xx_uart4_pads); } + break; + default: + break; } } - -static ssize_t sleep_timeout_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_device *odev = to_omap_device(pdev); - struct omap_uart_state *uart = odev->hwmods[0]->dev_attr; - - return sprintf(buf, "%u\n", uart->timeout / HZ); -} - -static ssize_t sleep_timeout_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t n) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_device *odev = to_omap_device(pdev); - struct omap_uart_state *uart = odev->hwmods[0]->dev_attr; - unsigned int value; - - if (sscanf(buf, "%u", &value) != 1) { - dev_err(dev, "sleep_timeout_store: Invalid value\n"); - return -EINVAL; - } - - uart->timeout = value * HZ; - if (uart->timeout) - mod_timer(&uart->timer, jiffies + uart->timeout); - else - /* A zero value means disable timeout feature */ - omap_uart_block_sleep(uart); - - return n; -} - -static DEVICE_ATTR(sleep_timeout, 0644, sleep_timeout_show, - sleep_timeout_store); -#define DEV_CREATE_FILE(dev, attr) WARN_ON(device_create_file(dev, attr)) #else -static inline void omap_uart_idle_init(struct omap_uart_state *uart) {} -static void omap_uart_block_sleep(struct omap_uart_state *uart) -{ - /* Needed to enable UART clocks when built without CONFIG_PM */ - omap_uart_enable_clocks(uart); -} -#define DEV_CREATE_FILE(dev, attr) -#endif /* CONFIG_PM */ - -#ifndef CONFIG_SERIAL_OMAP -/* - * Override the default 8250 read handler: mem_serial_in() - * Empty RX fifo read causes an abort on omap3630 and omap4 - * This function makes sure that an empty rx fifo is not read on these silicons - * (OMAP1/2/3430 are not affected) - */ -static unsigned int serial_in_override(struct uart_port *up, int offset) -{ - if (UART_RX == offset) { - unsigned int lsr; - lsr = __serial_read_reg(up, UART_LSR); - if (!(lsr & UART_LSR_DR)) - return -EPERM; - } - - return __serial_read_reg(up, offset); -} +static void omap_serial_fill_default_pads(struct omap_board_data *bdata) {} +#endif -static void serial_out_override(struct uart_port *up, int offset, int value) +char *cmdline_find_option(char *str) { - unsigned int status, tmout = 10000; + extern char *saved_command_line; - status = __serial_read_reg(up, UART_LSR); - while (!(status & UART_LSR_THRE)) { - /* Wait up to 10ms for the character(s) to be sent. */ - if (--tmout == 0) - break; - udelay(1); - status = __serial_read_reg(up, UART_LSR); - } - __serial_write_reg(up, offset, value); + return strstr(saved_command_line, str); } -#endif static int __init omap_serial_early_init(void) { - int i = 0; - do { char oh_name[MAX_UART_HWMOD_NAME_LEN]; struct omap_hwmod *oh; struct omap_uart_state *uart; + char uart_name[MAX_UART_HWMOD_NAME_LEN]; snprintf(oh_name, MAX_UART_HWMOD_NAME_LEN, - "uart%d", i + 1); + "uart%d", num_uarts + 1); oh = omap_hwmod_lookup(oh_name); if (!oh) break; @@ -653,21 +271,35 @@ static int __init omap_serial_early_init(void) return -ENODEV; uart->oh = oh; - uart->num = i++; + uart->num = num_uarts++; list_add_tail(&uart->node, &uart_list); - num_uarts++; - - /* - * NOTE: omap_hwmod_setup*() has not yet been called, - * so no hwmod functions will work yet. - */ - - /* - * During UART early init, device need to be probed - * to determine SoC specific init before omap_device - * is ready. Therefore, don't allow idle here - */ - uart->oh->flags |= HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET; + snprintf(uart_name, MAX_UART_HWMOD_NAME_LEN, + "%s%d", OMAP_SERIAL_NAME, uart->num); + + if (cmdline_find_option(uart_name)) { + console_uart_id = uart->num; + + if (console_loglevel >= 10) { + uart_debug = true; + pr_info("%s used as console in debug mode" + " uart%d clocks will not be" + " gated", uart_name, uart->num); + } + + if (cmdline_find_option("no_console_suspend")) + no_console_suspend = true; + + /* + * omap-uart can be used for earlyprintk logs + * So if omap-uart is used as console then prevent + * uart reset and idle to get logs from omap-uart + * until uart console driver is available to take + * care for console messages. + * Idling or resetting omap-uart while printing logs + * early boot logs can stall the boot-up. + */ + oh->flags |= HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET; + } } while (1); return 0; @@ -677,6 +309,7 @@ core_initcall(omap_serial_early_init); /** * omap_serial_init_port() - initialize single serial port * @bdata: port specific board data pointer + * @info: platform specific data pointer * * This function initialies serial driver for given port only. * Platforms can call this function instead of omap_serial_init() @@ -685,7 +318,8 @@ core_initcall(omap_serial_early_init); * Don't mix calls to omap_serial_init_port() and omap_serial_init(), * use only one of the two. */ -void __init omap_serial_init_port(struct omap_board_data *bdata) +void __init omap_serial_init_port(struct omap_board_data *bdata, + struct omap_uart_port_info *info) { struct omap_uart_state *uart; struct omap_hwmod *oh; @@ -693,15 +327,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata) void *pdata = NULL; u32 pdata_size = 0; char *name; -#ifndef CONFIG_SERIAL_OMAP - struct plat_serial8250_port ports[2] = { - {}, - {.flags = 0}, - }; - struct plat_serial8250_port *p = &ports[0]; -#else struct omap_uart_port_info omap_up; -#endif if (WARN_ON(!bdata)) return; @@ -713,66 +339,34 @@ void __init omap_serial_init_port(struct omap_board_data *bdata) list_for_each_entry(uart, &uart_list, node) if (bdata->id == uart->num) break; + if (!info) + info = omap_serial_default_info; oh = uart->oh; - uart->dma_enabled = 0; -#ifndef CONFIG_SERIAL_OMAP - name = "serial8250"; - - /* - * !! 8250 driver does not use standard IORESOURCE* It - * has it's own custom pdata that can be taken from - * the hwmod resource data. But, this needs to be - * done after the build. - * - * ?? does it have to be done before the register ?? - * YES, because platform_device_data_add() copies - * pdata, it does not use a pointer. - */ - p->flags = UPF_BOOT_AUTOCONF; - p->iotype = UPIO_MEM; - p->regshift = 2; - p->uartclk = OMAP24XX_BASE_BAUD * 16; - p->irq = oh->mpu_irqs[0].irq; - p->mapbase = oh->slaves[0]->addr->pa_start; - p->membase = omap_hwmod_get_mpu_rt_va(oh); - p->irqflags = IRQF_SHARED; - p->private_data = uart; - - /* - * omap44xx, ti816x: Never read empty UART fifo - * omap3xxx: Never read empty UART fifo on UARTs - * with IP rev >=0x52 - */ - uart->regshift = p->regshift; - uart->membase = p->membase; - if (cpu_is_omap44xx() || cpu_is_ti816x()) - uart->errata |= UART_ERRATA_FIFO_FULL_ABORT; - else if ((serial_read_reg(uart, UART_OMAP_MVER) & 0xFF) - >= UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV) - uart->errata |= UART_ERRATA_FIFO_FULL_ABORT; - - if (uart->errata & UART_ERRATA_FIFO_FULL_ABORT) { - p->serial_in = serial_in_override; - p->serial_out = serial_out_override; - } - - pdata = &ports[0]; - pdata_size = 2 * sizeof(struct plat_serial8250_port); -#else - name = DRIVER_NAME; - omap_up.dma_enabled = uart->dma_enabled; + omap_up.dma_enabled = info->dma_enabled; omap_up.uartclk = OMAP24XX_BASE_BAUD * 16; - omap_up.mapbase = oh->slaves[0]->addr->pa_start; - omap_up.membase = omap_hwmod_get_mpu_rt_va(oh); - omap_up.irqflags = IRQF_SHARED; - omap_up.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; + omap_up.flags = UPF_BOOT_AUTOCONF; + omap_up.get_context_loss_count = omap_pm_get_dev_context_loss_count; + omap_up.set_forceidle = omap_uart_set_forceidle; + omap_up.set_noidle = omap_uart_set_noidle; + omap_up.enable_wakeup = omap_uart_enable_wakeup; + omap_up.dma_rx_buf_size = info->dma_rx_buf_size; + omap_up.dma_rx_timeout = info->dma_rx_timeout; + omap_up.dma_rx_poll_rate = info->dma_rx_poll_rate; + omap_up.autosuspend_timeout = info->autosuspend_timeout; + + /* Enable the MDR1 Errata i202 for OMAP2430/3xxx/44xx */ + if (!cpu_is_omap2420() && !cpu_is_ti816x()) + omap_up.errata |= UART_ERRATA_i202_MDR1_ACCESS; + + /* Enable DMA Mode Force Idle Errata i291 for omap34xx/3630 */ + if (cpu_is_omap34xx() || cpu_is_omap3630()) + omap_up.errata |= UART_ERRATA_i291_DMA_FORCEIDLE; pdata = &omap_up; pdata_size = sizeof(struct omap_uart_port_info); -#endif if (WARN_ON(!oh)) return; @@ -782,64 +376,29 @@ void __init omap_serial_init_port(struct omap_board_data *bdata) WARN(IS_ERR(pdev), "Could not build omap_device for %s: %s.\n", name, oh->name); - omap_device_disable_idle_on_suspend(pdev); + if ((console_uart_id == bdata->id) && no_console_suspend) + omap_device_disable_idle_on_suspend(pdev); + oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt); - uart->irq = oh->mpu_irqs[0].irq; - uart->regshift = 2; - uart->mapbase = oh->slaves[0]->addr->pa_start; - uart->membase = omap_hwmod_get_mpu_rt_va(oh); uart->pdev = pdev; oh->dev_attr = uart; - console_lock(); /* in case the earlycon is on the UART */ - - /* - * Because of early UART probing, UART did not get idled - * on init. Now that omap_device is ready, ensure full idle - * before doing omap_device_enable(). - */ - omap_hwmod_idle(uart->oh); - - omap_device_enable(uart->pdev); - omap_uart_idle_init(uart); - omap_uart_reset(uart); - omap_hwmod_enable_wakeup(uart->oh); - omap_device_idle(uart->pdev); - - /* - * Need to block sleep long enough for interrupt driven - * driver to start. Console driver is in polling mode - * so device needs to be kept enabled while polling driver - * is in use. - */ - if (uart->timeout) - uart->timeout = (30 * HZ); - omap_uart_block_sleep(uart); - uart->timeout = DEFAULT_TIMEOUT; - - console_unlock(); - - if ((cpu_is_omap34xx() && uart->padconf) || - (uart->wk_en && uart->wk_mask)) { + if (((cpu_is_omap34xx() || cpu_is_omap44xx()) && bdata->pads) + && !uart_debug) device_init_wakeup(&pdev->dev, true); - DEV_CREATE_FILE(&pdev->dev, &dev_attr_sleep_timeout); - } - - /* Enable the MDR1 errata for OMAP3 */ - if (cpu_is_omap34xx() && !cpu_is_ti816x()) - uart->errata |= UART_ERRATA_i202_MDR1_ACCESS; } /** - * omap_serial_init() - initialize all supported serial ports + * omap_serial_board_init() - initialize all supported serial ports + * @info: platform specific data pointer * * Initializes all available UARTs as serial ports. Platforms * can call this function when they want to have default behaviour * for serial ports (e.g initialize them all as serial ports). */ -void __init omap_serial_init(void) +void __init omap_serial_board_init(struct omap_uart_port_info *info) { struct omap_uart_state *uart; struct omap_board_data bdata; @@ -849,7 +408,25 @@ void __init omap_serial_init(void) bdata.flags = 0; bdata.pads = NULL; bdata.pads_cnt = 0; - omap_serial_init_port(&bdata); + if (cpu_is_omap44xx() || cpu_is_omap34xx()) + omap_serial_fill_default_pads(&bdata); + + if (!info) + omap_serial_init_port(&bdata, NULL); + else + omap_serial_init_port(&bdata, &info[uart->num]); } } + +/** + * omap_serial_init() - initialize all supported serial ports + * + * Initializes all available UARTs. + * Platforms can call this function when they want to have default behaviour + * for serial ports (e.g initialize them all as serial ports). + */ +void __init omap_serial_init(void) +{ + omap_serial_board_init(NULL); +} diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile index 3df04d944e4..9a584614e7e 100644 --- a/arch/arm/plat-omap/Makefile +++ b/arch/arm/plat-omap/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_ARCH_OMAP4) += omap_device.o obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o -obj-$(CONFIG_CPU_FREQ) += cpu-omap.o obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o obj-$(CONFIG_OMAP_DEBUG_DEVICES) += debug-devices.o obj-$(CONFIG_OMAP_DEBUG_LEDS) += debug-leds.o diff --git a/arch/arm/plat-omap/include/plat/am33xx.h b/arch/arm/plat-omap/include/plat/am33xx.h new file mode 100644 index 00000000000..06c19bb7bca --- /dev/null +++ b/arch/arm/plat-omap/include/plat/am33xx.h @@ -0,0 +1,25 @@ +/* + * This file contains the address info for various AM33XX modules. + * + * Copyright (C) 2011 Texas Instruments, Inc. - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARCH_AM33XX_H +#define __ASM_ARCH_AM33XX_H + +#define L4_SLOW_AM33XX_BASE 0x48000000 + +#define AM33XX_SCM_BASE 0x44E10000 +#define AM33XX_CTRL_BASE AM33XX_SCM_BASE +#define AM33XX_PRCM_BASE 0x44E00000 + +#endif /* __ASM_ARCH_AM33XX_H */ diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h index eb73ab40e95..240a7b9fd94 100644 --- a/arch/arm/plat-omap/include/plat/clock.h +++ b/arch/arm/plat-omap/include/plat/clock.h @@ -59,6 +59,8 @@ struct clkops { #define RATE_IN_4430 (1 << 5) #define RATE_IN_TI816X (1 << 6) #define RATE_IN_4460 (1 << 7) +#define RATE_IN_AM33XX (1 << 8) +#define RATE_IN_TI814X (1 << 9) #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X) #define RATE_IN_34XX (RATE_IN_3430ES1 | RATE_IN_3430ES2PLUS) @@ -84,7 +86,7 @@ struct clkops { struct clksel_rate { u32 val; u8 div; - u8 flags; + u16 flags; }; /** diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h index 408a12f7920..6b51086fce1 100644 --- a/arch/arm/plat-omap/include/plat/cpu.h +++ b/arch/arm/plat-omap/include/plat/cpu.h @@ -69,6 +69,7 @@ unsigned int omap_rev(void); * cpu_is_omap343x(): True for OMAP3430 * cpu_is_omap443x(): True for OMAP4430 * cpu_is_omap446x(): True for OMAP4460 + * cpu_is_omap447x(): True for OMAP4470 */ #define GET_OMAP_CLASS (omap_rev() & 0xff) @@ -78,6 +79,22 @@ static inline int is_omap ##class (void) \ return (GET_OMAP_CLASS == (id)) ? 1 : 0; \ } +#define GET_AM_CLASS ((omap_rev() >> 24) & 0xff) + +#define IS_AM_CLASS(class, id) \ +static inline int is_am ##class (void) \ +{ \ + return (GET_AM_CLASS == (id)) ? 1 : 0; \ +} + +#define GET_TI_CLASS ((omap_rev() >> 24) & 0xff) + +#define IS_TI_CLASS(class, id) \ +static inline int is_ti ##class (void) \ +{ \ + return (GET_TI_CLASS == (id)) ? 1 : 0; \ +} + #define GET_OMAP_SUBCLASS ((omap_rev() >> 20) & 0x0fff) #define IS_OMAP_SUBCLASS(subclass, id) \ @@ -92,12 +109,21 @@ static inline int is_ti ##subclass (void) \ return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0; \ } +#define IS_AM_SUBCLASS(subclass, id) \ +static inline int is_am ##subclass (void) \ +{ \ + return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0; \ +} + IS_OMAP_CLASS(7xx, 0x07) IS_OMAP_CLASS(15xx, 0x15) IS_OMAP_CLASS(16xx, 0x16) IS_OMAP_CLASS(24xx, 0x24) IS_OMAP_CLASS(34xx, 0x34) IS_OMAP_CLASS(44xx, 0x44) +IS_AM_CLASS(33xx, 0x33) + +IS_TI_CLASS(81xx, 0x81) IS_OMAP_SUBCLASS(242x, 0x242) IS_OMAP_SUBCLASS(243x, 0x243) @@ -105,8 +131,11 @@ IS_OMAP_SUBCLASS(343x, 0x343) IS_OMAP_SUBCLASS(363x, 0x363) IS_OMAP_SUBCLASS(443x, 0x443) IS_OMAP_SUBCLASS(446x, 0x446) +IS_OMAP_SUBCLASS(447x, 0x447) IS_TI_SUBCLASS(816x, 0x816) +IS_TI_SUBCLASS(814x, 0x814) +IS_AM_SUBCLASS(335x, 0x335) #define cpu_is_omap7xx() 0 #define cpu_is_omap15xx() 0 @@ -116,10 +145,15 @@ IS_TI_SUBCLASS(816x, 0x816) #define cpu_is_omap243x() 0 #define cpu_is_omap34xx() 0 #define cpu_is_omap343x() 0 +#define cpu_is_ti81xx() 0 #define cpu_is_ti816x() 0 +#define cpu_is_ti814x() 0 +#define cpu_is_am33xx() 0 +#define cpu_is_am335x() 0 #define cpu_is_omap44xx() 0 #define cpu_is_omap443x() 0 #define cpu_is_omap446x() 0 +#define cpu_is_omap447x() 0 #if defined(MULTI_OMAP1) # if defined(CONFIG_ARCH_OMAP730) @@ -322,7 +356,11 @@ IS_OMAP_TYPE(3517, 0x3517) # undef cpu_is_omap3530 # undef cpu_is_omap3505 # undef cpu_is_omap3517 +# undef cpu_is_ti81xx # undef cpu_is_ti816x +# undef cpu_is_ti814x +# undef cpu_is_am33xx +# undef cpu_is_am335x # define cpu_is_omap3430() is_omap3430() # define cpu_is_omap3503() (cpu_is_omap3430() && \ (!omap3_has_iva()) && \ @@ -339,16 +377,22 @@ IS_OMAP_TYPE(3517, 0x3517) !omap3_has_sgx()) # undef cpu_is_omap3630 # define cpu_is_omap3630() is_omap363x() +# define cpu_is_ti81xx() is_ti81xx() # define cpu_is_ti816x() is_ti816x() +# define cpu_is_ti814x() is_ti814x() +# define cpu_is_am33xx() is_am33xx() +# define cpu_is_am335x() is_am335x() #endif # if defined(CONFIG_ARCH_OMAP4) # undef cpu_is_omap44xx # undef cpu_is_omap443x # undef cpu_is_omap446x +# undef cpu_is_omap447x # define cpu_is_omap44xx() is_omap44xx() # define cpu_is_omap443x() is_omap443x() # define cpu_is_omap446x() is_omap446x() +# define cpu_is_omap447x() is_omap447x() # endif /* Macros to detect if we have OMAP1 or OMAP2 */ @@ -386,15 +430,27 @@ IS_OMAP_TYPE(3517, 0x3517) #define TI8168_REV_ES1_0 TI816X_CLASS #define TI8168_REV_ES1_1 (TI816X_CLASS | (0x1 << 8)) +#define TI814X_CLASS 0x81400034 +#define TI8148_REV_ES1_0 TI814X_CLASS +#define TI8148_REV_ES2_0 (TI814X_CLASS | (0x1 << 8)) +#define TI8148_REV_ES2_1 (TI814X_CLASS | (0x2 << 8)) + +#define AM335X_CLASS 0x33500034 +#define AM335X_REV_ES1_0 AM335X_CLASS + #define OMAP443X_CLASS 0x44300044 #define OMAP4430_REV_ES1_0 (OMAP443X_CLASS | (0x10 << 8)) #define OMAP4430_REV_ES2_0 (OMAP443X_CLASS | (0x20 << 8)) #define OMAP4430_REV_ES2_1 (OMAP443X_CLASS | (0x21 << 8)) #define OMAP4430_REV_ES2_2 (OMAP443X_CLASS | (0x22 << 8)) +#define OMAP4430_REV_ES2_3 (OMAP443X_CLASS | (0x23 << 8)) #define OMAP446X_CLASS 0x44600044 #define OMAP4460_REV_ES1_0 (OMAP446X_CLASS | (0x10 << 8)) +#define OMAP447X_CLASS 0x44700044 +#define OMAP4470_REV_ES1_0 (OMAP447X_CLASS | (0x10 << 8)) + void omap2_check_revision(void); /* diff --git a/arch/arm/plat-omap/include/plat/hardware.h b/arch/arm/plat-omap/include/plat/hardware.h index e87efe1499b..e897978371c 100644 --- a/arch/arm/plat-omap/include/plat/hardware.h +++ b/arch/arm/plat-omap/include/plat/hardware.h @@ -286,6 +286,7 @@ #include <plat/omap24xx.h> #include <plat/omap34xx.h> #include <plat/omap44xx.h> -#include <plat/ti816x.h> +#include <plat/ti81xx.h> +#include <plat/am33xx.h> #endif /* __ASM_ARCH_OMAP_HARDWARE_H */ diff --git a/arch/arm/plat-omap/include/plat/io.h b/arch/arm/plat-omap/include/plat/io.h index 1234944a4da..0696bae1818 100644 --- a/arch/arm/plat-omap/include/plat/io.h +++ b/arch/arm/plat-omap/include/plat/io.h @@ -73,6 +73,9 @@ #define OMAP4_L3_IO_OFFSET 0xb4000000 #define OMAP4_L3_IO_ADDRESS(pa) IOMEM((pa) + OMAP4_L3_IO_OFFSET) /* L3 */ +#define AM33XX_L4_WK_IO_OFFSET 0xb5000000 +#define AM33XX_L4_WK_IO_ADDRESS(pa) IOMEM((pa) + AM33XX_L4_WK_IO_OFFSET) + #define OMAP4_L3_PER_IO_OFFSET 0xb1100000 #define OMAP4_L3_PER_IO_ADDRESS(pa) IOMEM((pa) + OMAP4_L3_PER_IO_OFFSET) @@ -154,6 +157,15 @@ #define L4_34XX_SIZE SZ_4M /* 1MB of 128MB used, want 1MB sect */ /* + * ---------------------------------------------------------------------------- + * AM33XX specific IO mapping + * ---------------------------------------------------------------------------- + */ +#define L4_WK_AM33XX_PHYS L4_WK_AM33XX_BASE +#define L4_WK_AM33XX_VIRT (L4_WK_AM33XX_PHYS + AM33XX_L4_WK_IO_OFFSET) +#define L4_WK_AM33XX_SIZE SZ_4M /* 1MB of 128MB used, want 1MB sect */ + +/* * Need to look at the Size 4M for L4. * VPOM3430 was not working for Int controller */ diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h index 2682043f5a5..9ff444469f3 100644 --- a/arch/arm/plat-omap/include/plat/omap-serial.h +++ b/arch/arm/plat-omap/include/plat/omap-serial.h @@ -19,6 +19,7 @@ #include <linux/serial_core.h> #include <linux/platform_device.h> +#include <linux/pm_qos.h> #include <plat/mux.h> @@ -33,6 +34,8 @@ #define OMAP_MODE13X_SPEED 230400 +#define OMAP_UART_SCR_TX_EMPTY 0x08 + /* WER = 0x7F * Enable module level wakeup in WER reg */ @@ -51,18 +54,27 @@ #define OMAP_UART_DMA_CH_FREE -1 -#define RX_TIMEOUT (3 * HZ) #define OMAP_MAX_HSUART_PORTS 4 #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA +#define UART_ERRATA_i202_MDR1_ACCESS BIT(0) +#define UART_ERRATA_i291_DMA_FORCEIDLE BIT(1) + struct omap_uart_port_info { bool dma_enabled; /* To specify DMA Mode */ unsigned int uartclk; /* UART clock rate */ - void __iomem *membase; /* ioremap cookie or NULL */ - resource_size_t mapbase; /* resource base */ - unsigned long irqflags; /* request_irq flags */ upf_t flags; /* UPF_* flags */ + u32 errata; + unsigned int dma_rx_buf_size; + unsigned int dma_rx_timeout; + unsigned int autosuspend_timeout; + unsigned int dma_rx_poll_rate; + + int (*get_context_loss_count)(struct device *); + void (*set_forceidle)(struct platform_device *); + void (*set_noidle)(struct platform_device *); + void (*enable_wakeup)(struct platform_device *, bool); }; struct uart_omap_dma { @@ -86,8 +98,9 @@ struct uart_omap_dma { spinlock_t rx_lock; /* timer to poll activity on rx dma */ struct timer_list rx_timer; - int rx_buf_size; - int rx_timeout; + unsigned int rx_buf_size; + unsigned int rx_poll_rate; + unsigned int rx_timeout; }; struct uart_omap_port { @@ -100,6 +113,10 @@ struct uart_omap_port { unsigned char mcr; unsigned char fcr; unsigned char efr; + unsigned char dll; + unsigned char dlh; + unsigned char mdr1; + unsigned char scr; int use_dma; /* @@ -111,6 +128,14 @@ struct uart_omap_port { unsigned char msr_saved_flags; char name[20]; unsigned long port_activity; + u32 context_loss_cnt; + u32 errata; + u8 wakeups_enabled; + + struct pm_qos_request pm_qos_request; + u32 latency; + u32 calc_latency; + struct work_struct qos_work; }; #endif /* __OMAP_SERIAL_H__ */ diff --git a/arch/arm/plat-omap/include/plat/omap34xx.h b/arch/arm/plat-omap/include/plat/omap34xx.h index b9e85886b9d..0d818acf391 100644 --- a/arch/arm/plat-omap/include/plat/omap34xx.h +++ b/arch/arm/plat-omap/include/plat/omap34xx.h @@ -35,6 +35,8 @@ #define L4_EMU_34XX_BASE 0x54000000 #define L3_34XX_BASE 0x68000000 +#define L4_WK_AM33XX_BASE 0x44C00000 + #define OMAP3430_32KSYNCT_BASE 0x48320000 #define OMAP3430_CM_BASE 0x48004800 #define OMAP3430_PRM_BASE 0x48306800 diff --git a/arch/arm/plat-omap/include/plat/serial.h b/arch/arm/plat-omap/include/plat/serial.h index 1ab9fd6abe6..38b3e38df2a 100644 --- a/arch/arm/plat-omap/include/plat/serial.h +++ b/arch/arm/plat-omap/include/plat/serial.h @@ -51,10 +51,10 @@ #define OMAP4_UART3_BASE 0x48020000 #define OMAP4_UART4_BASE 0x4806e000 -/* TI816X serial ports */ -#define TI816X_UART1_BASE 0x48020000 -#define TI816X_UART2_BASE 0x48022000 -#define TI816X_UART3_BASE 0x48024000 +/* TI81XX serial ports */ +#define TI81XX_UART1_BASE 0x48020000 +#define TI81XX_UART2_BASE 0x48022000 +#define TI81XX_UART3_BASE 0x48024000 /* AM3505/3517 UART4 */ #define AM35XX_UART4_BASE 0x4809E000 /* Only on AM3505/3517 */ @@ -89,9 +89,9 @@ #define OMAP4UART2 OMAP2UART2 #define OMAP4UART3 43 #define OMAP4UART4 44 -#define TI816XUART1 81 -#define TI816XUART2 82 -#define TI816XUART3 83 +#define TI81XXUART1 81 +#define TI81XXUART2 82 +#define TI81XXUART3 83 #define ZOOM_UART 95 /* Only on zoom2/3 */ /* This is only used by 8250.c for omap1510 */ @@ -106,15 +106,13 @@ #ifndef __ASSEMBLER__ struct omap_board_data; +struct omap_uart_port_info; extern void omap_serial_init(void); -extern void omap_serial_init_port(struct omap_board_data *bdata); extern int omap_uart_can_sleep(void); -extern void omap_uart_check_wakeup(void); -extern void omap_uart_prepare_suspend(void); -extern void omap_uart_prepare_idle(int num); -extern void omap_uart_resume_idle(int num); -extern void omap_uart_enable_irqs(int enable); +extern void omap_serial_board_init(struct omap_uart_port_info *platform_data); +extern void omap_serial_init_port(struct omap_board_data *bdata, + struct omap_uart_port_info *platform_data); #endif #endif diff --git a/arch/arm/plat-omap/include/plat/ti816x.h b/arch/arm/plat-omap/include/plat/ti81xx.h index 50510f5dda1..8f9843f7842 100644 --- a/arch/arm/plat-omap/include/plat/ti816x.h +++ b/arch/arm/plat-omap/include/plat/ti81xx.h @@ -1,5 +1,5 @@ /* - * This file contains the address data for various TI816X modules. + * This file contains the address data for various TI81XX modules. * * Copyright (C) 2010 Texas Instruments, Inc. - http://www.ti.com/ * @@ -13,15 +13,15 @@ * GNU General Public License for more details. */ -#ifndef __ASM_ARCH_TI816X_H -#define __ASM_ARCH_TI816X_H +#ifndef __ASM_ARCH_TI81XX_H +#define __ASM_ARCH_TI81XX_H -#define L4_SLOW_TI816X_BASE 0x48000000 +#define L4_SLOW_TI81XX_BASE 0x48000000 -#define TI816X_SCM_BASE 0x48140000 -#define TI816X_CTRL_BASE TI816X_SCM_BASE -#define TI816X_PRCM_BASE 0x48180000 +#define TI81XX_SCM_BASE 0x48140000 +#define TI81XX_CTRL_BASE TI81XX_SCM_BASE +#define TI81XX_PRCM_BASE 0x48180000 -#define TI816X_ARM_INTC_BASE 0x48200000 +#define TI81XX_ARM_INTC_BASE 0x48200000 -#endif /* __ASM_ARCH_TI816X_H */ +#endif /* __ASM_ARCH_TI81XX_H */ diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h index 2f472e989ec..7fbc361946b 100644 --- a/arch/arm/plat-omap/include/plat/uncompress.h +++ b/arch/arm/plat-omap/include/plat/uncompress.h @@ -99,9 +99,9 @@ static inline void flush(void) #define DEBUG_LL_ZOOM(mach) \ _DEBUG_LL_ENTRY(mach, ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART) -#define DEBUG_LL_TI816X(p, mach) \ - _DEBUG_LL_ENTRY(mach, TI816X_UART##p##_BASE, OMAP_PORT_SHIFT, \ - TI816XUART##p) +#define DEBUG_LL_TI81XX(p, mach) \ + _DEBUG_LL_ENTRY(mach, TI81XX_UART##p##_BASE, OMAP_PORT_SHIFT, \ + TI81XXUART##p) static inline void __arch_decomp_setup(unsigned long arch_id) { @@ -177,7 +177,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id) DEBUG_LL_ZOOM(omap_zoom3); /* TI8168 base boards using UART3 */ - DEBUG_LL_TI816X(3, ti8168evm); + DEBUG_LL_TI81XX(3, ti8168evm); } while (0); } diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 5e713d3ef1f..ca24ab37d11 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -37,17 +37,24 @@ #include <linux/clk.h> #include <linux/serial_core.h> #include <linux/irq.h> +#include <linux/pm_runtime.h> +#include <linux/of.h> #include <plat/dma.h> #include <plat/dmtimer.h> #include <plat/omap-serial.h> +#define DEFAULT_CLK_SPEED 48000000 /* 48Mhz*/ + static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS]; /* Forward declaration of functions */ static void uart_tx_dma_callback(int lch, u16 ch_status, void *data); -static void serial_omap_rx_timeout(unsigned long uart_no); +static void serial_omap_rxdma_poll(unsigned long uart_no); static int serial_omap_start_rxdma(struct uart_omap_port *up); +static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1); + +static struct workqueue_struct *serial_omap_uart_wq; static inline unsigned int serial_in(struct uart_omap_port *up, int offset) { @@ -102,6 +109,8 @@ static void serial_omap_stop_rxdma(struct uart_omap_port *up) omap_free_dma(up->uart_dma.rx_dma_channel); up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE; up->uart_dma.rx_dma_used = false; + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); } } @@ -109,9 +118,12 @@ static void serial_omap_enable_ms(struct uart_port *port) { struct uart_omap_port *up = (struct uart_omap_port *)port; - dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); + + pm_runtime_get_sync(&up->pdev->dev); up->ier |= UART_IER_MSI; serial_out(up, UART_IER, up->ier); + pm_runtime_put(&up->pdev->dev); } static void serial_omap_stop_tx(struct uart_port *port) @@ -129,30 +141,40 @@ static void serial_omap_stop_tx(struct uart_port *port) omap_stop_dma(up->uart_dma.tx_dma_channel); omap_free_dma(up->uart_dma.tx_dma_channel); up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE; + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); } + pm_runtime_get_sync(&up->pdev->dev); if (up->ier & UART_IER_THRI) { up->ier &= ~UART_IER_THRI; serial_out(up, UART_IER, up->ier); } + + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); } static void serial_omap_stop_rx(struct uart_port *port) { struct uart_omap_port *up = (struct uart_omap_port *)port; + pm_runtime_get_sync(&up->pdev->dev); if (up->use_dma) serial_omap_stop_rxdma(up); up->ier &= ~UART_IER_RLSI; up->port.read_status_mask &= ~UART_LSR_DR; serial_out(up, UART_IER, up->ier); + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); } -static inline void receive_chars(struct uart_omap_port *up, int *status) +static inline void receive_chars(struct uart_omap_port *up, + unsigned int *status) { struct tty_struct *tty = up->port.state->port.tty; - unsigned int flag; - unsigned char ch, lsr = *status; + unsigned int flag, lsr = *status; + unsigned char ch = 0; int max_count = 256; do { @@ -262,7 +284,10 @@ static void serial_omap_start_tx(struct uart_port *port) int ret = 0; if (!up->use_dma) { + pm_runtime_get_sync(&up->pdev->dev); serial_omap_enable_ier_thri(up); + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); return; } @@ -272,6 +297,7 @@ static void serial_omap_start_tx(struct uart_port *port) xmit = &up->port.state->xmit; if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) { + pm_runtime_get_sync(&up->pdev->dev); ret = omap_request_dma(up->uart_dma.uart_dma_tx, "UART Tx DMA", (void *)uart_tx_dma_callback, up, @@ -354,9 +380,13 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id) unsigned int iir, lsr; unsigned long flags; + pm_runtime_get_sync(&up->pdev->dev); iir = serial_in(up, UART_IIR); - if (iir & UART_IIR_NO_INT) + if (iir & UART_IIR_NO_INT) { + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); return IRQ_NONE; + } spin_lock_irqsave(&up->port.lock, flags); lsr = serial_in(up, UART_LSR); @@ -378,6 +408,9 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id) transmit_chars(up); spin_unlock_irqrestore(&up->port.lock, flags); + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); + up->port_activity = jiffies; return IRQ_HANDLED; } @@ -388,11 +421,12 @@ static unsigned int serial_omap_tx_empty(struct uart_port *port) unsigned long flags = 0; unsigned int ret = 0; - dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->pdev->id); + pm_runtime_get_sync(&up->pdev->dev); + dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); spin_lock_irqsave(&up->port.lock, flags); ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; spin_unlock_irqrestore(&up->port.lock, flags); - + pm_runtime_put(&up->pdev->dev); return ret; } @@ -402,8 +436,11 @@ static unsigned int serial_omap_get_mctrl(struct uart_port *port) unsigned char status; unsigned int ret = 0; + pm_runtime_get_sync(&up->pdev->dev); status = check_modem_status(up); - dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->pdev->id); + pm_runtime_put(&up->pdev->dev); + + dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); if (status & UART_MSR_DCD) ret |= TIOCM_CAR; @@ -421,7 +458,7 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl) struct uart_omap_port *up = (struct uart_omap_port *)port; unsigned char mcr = 0; - dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); if (mctrl & TIOCM_RTS) mcr |= UART_MCR_RTS; if (mctrl & TIOCM_DTR) @@ -433,8 +470,11 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl) if (mctrl & TIOCM_LOOP) mcr |= UART_MCR_LOOP; - mcr |= up->mcr; - serial_out(up, UART_MCR, mcr); + pm_runtime_get_sync(&up->pdev->dev); + up->mcr = serial_in(up, UART_MCR); + up->mcr |= mcr; + serial_out(up, UART_MCR, up->mcr); + pm_runtime_put(&up->pdev->dev); } static void serial_omap_break_ctl(struct uart_port *port, int break_state) @@ -442,7 +482,8 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state) struct uart_omap_port *up = (struct uart_omap_port *)port; unsigned long flags = 0; - dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); + pm_runtime_get_sync(&up->pdev->dev); spin_lock_irqsave(&up->port.lock, flags); if (break_state == -1) up->lcr |= UART_LCR_SBC; @@ -450,6 +491,7 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state) up->lcr &= ~UART_LCR_SBC; serial_out(up, UART_LCR, up->lcr); spin_unlock_irqrestore(&up->port.lock, flags); + pm_runtime_put(&up->pdev->dev); } static int serial_omap_startup(struct uart_port *port) @@ -466,8 +508,9 @@ static int serial_omap_startup(struct uart_port *port) if (retval) return retval; - dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); + pm_runtime_get_sync(&up->pdev->dev); /* * Clear the FIFO buffers and disable them. * (they will be reenabled in set_termios()) @@ -505,8 +548,8 @@ static int serial_omap_startup(struct uart_port *port) (dma_addr_t *)&(up->uart_dma.tx_buf_dma_phys), 0); init_timer(&(up->uart_dma.rx_timer)); - up->uart_dma.rx_timer.function = serial_omap_rx_timeout; - up->uart_dma.rx_timer.data = up->pdev->id; + up->uart_dma.rx_timer.function = serial_omap_rxdma_poll; + up->uart_dma.rx_timer.data = up->port.line; /* Currently the buffer size is 4KB. Can increase it */ up->uart_dma.rx_buf = dma_alloc_coherent(NULL, up->uart_dma.rx_buf_size, @@ -523,6 +566,8 @@ static int serial_omap_startup(struct uart_port *port) /* Enable module level wake up */ serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP); + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); up->port_activity = jiffies; return 0; } @@ -532,7 +577,9 @@ static void serial_omap_shutdown(struct uart_port *port) struct uart_omap_port *up = (struct uart_omap_port *)port; unsigned long flags = 0; - dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); + + pm_runtime_get_sync(&up->pdev->dev); /* * Disable interrupts from this port */ @@ -566,6 +613,8 @@ static void serial_omap_shutdown(struct uart_port *port) up->uart_dma.rx_buf_dma_phys); up->uart_dma.rx_buf = NULL; } + + pm_runtime_put(&up->pdev->dev); free_irq(up->port.irq, up); } @@ -573,8 +622,6 @@ static inline void serial_omap_configure_xonxoff (struct uart_omap_port *up, struct ktermios *termios) { - unsigned char efr = 0; - up->lcr = serial_in(up, UART_LCR); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); up->efr = serial_in(up, UART_EFR); @@ -584,8 +631,7 @@ serial_omap_configure_xonxoff serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); /* clear SW control mode bits */ - efr = up->efr; - efr &= OMAP_UART_SW_CLR; + up->efr &= OMAP_UART_SW_CLR; /* * IXON Flag: @@ -593,7 +639,7 @@ serial_omap_configure_xonxoff * Transmit XON1, XOFF1 */ if (termios->c_iflag & IXON) - efr |= OMAP_UART_SW_TX; + up->efr |= OMAP_UART_SW_TX; /* * IXOFF Flag: @@ -601,7 +647,7 @@ serial_omap_configure_xonxoff * Receiver compares XON1, XOFF1. */ if (termios->c_iflag & IXOFF) - efr |= OMAP_UART_SW_RX; + up->efr |= OMAP_UART_SW_RX; serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); @@ -624,13 +670,21 @@ serial_omap_configure_xonxoff * load the new software flow control mode IXON or IXOFF * and restore the UARTi.EFR_REG[4] ENHANCED_EN value. */ - serial_out(up, UART_EFR, efr | UART_EFR_SCD); + serial_out(up, UART_EFR, up->efr | UART_EFR_SCD); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); serial_out(up, UART_MCR, up->mcr & ~UART_MCR_TCRTLR); serial_out(up, UART_LCR, up->lcr); } +static void serial_omap_uart_qos_work(struct work_struct *work) +{ + struct uart_omap_port *up = container_of(work, struct uart_omap_port, + qos_work); + + pm_qos_update_request(&up->pm_qos_request, up->latency); +} + static void serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old) @@ -671,6 +725,16 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/13); quot = serial_omap_get_divisor(port, baud); + /* calculate wakeup latency constraint */ + up->calc_latency = (1000000 * up->port.fifosize) / + (1000 * baud / 8); + up->latency = up->calc_latency; + schedule_work(&up->qos_work); + + up->dll = quot & 0xff; + up->dlh = quot >> 8; + up->mdr1 = UART_OMAP_MDR1_DISABLE; + up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | UART_FCR_ENABLE_FIFO; if (up->use_dma) @@ -680,6 +744,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, * Ok, we're now changing the port state. Do it with * interrupts disabled. */ + pm_runtime_get_sync(&up->pdev->dev); spin_lock_irqsave(&up->port.lock, flags); /* @@ -723,6 +788,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, up->ier |= UART_IER_MSI; serial_out(up, UART_IER, up->ier); serial_out(up, UART_LCR, cval); /* reset DLAB */ + up->lcr = cval; + up->scr = OMAP_UART_SCR_TX_EMPTY; /* FIFOs and DMA Settings */ @@ -749,17 +816,22 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, if (up->use_dma) { serial_out(up, UART_TI752_TLR, 0); - serial_out(up, UART_OMAP_SCR, - (UART_FCR_TRIGGER_4 | UART_FCR_TRIGGER_8)); + up->scr |= (UART_FCR_TRIGGER_4 | UART_FCR_TRIGGER_8); } + serial_out(up, UART_OMAP_SCR, up->scr); + serial_out(up, UART_EFR, up->efr); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); serial_out(up, UART_MCR, up->mcr); /* Protocol, Baud Rate, and Interrupt Settings */ - serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); + if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) + serial_omap_mdr1_errataset(up, up->mdr1); + else + serial_out(up, UART_OMAP_MDR1, up->mdr1); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); up->efr = serial_in(up, UART_EFR); @@ -769,8 +841,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_IER, 0); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */ - serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */ + serial_out(up, UART_DLL, up->dll); /* LS of divisor */ + serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ serial_out(up, UART_LCR, 0); serial_out(up, UART_IER, up->ier); @@ -780,9 +852,14 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_LCR, cval); if (baud > 230400 && baud != 3000000) - serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_13X_MODE); + up->mdr1 = UART_OMAP_MDR1_13X_MODE; else - serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE); + up->mdr1 = UART_OMAP_MDR1_16X_MODE; + + if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) + serial_omap_mdr1_errataset(up, up->mdr1); + else + serial_out(up, UART_OMAP_MDR1, up->mdr1); /* Hardware Flow Control Configuration */ @@ -809,7 +886,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_omap_configure_xonxoff(up, termios); spin_unlock_irqrestore(&up->port.lock, flags); - dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->pdev->id); + pm_runtime_put(&up->pdev->dev); + dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); } static void @@ -819,7 +897,9 @@ serial_omap_pm(struct uart_port *port, unsigned int state, struct uart_omap_port *up = (struct uart_omap_port *)port; unsigned char efr; - dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); + + pm_runtime_get_sync(&up->pdev->dev); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); efr = serial_in(up, UART_EFR); serial_out(up, UART_EFR, efr | UART_EFR_ECB); @@ -829,6 +909,15 @@ serial_omap_pm(struct uart_port *port, unsigned int state, serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); serial_out(up, UART_EFR, efr); serial_out(up, UART_LCR, 0); + + if (!device_may_wakeup(&up->pdev->dev)) { + if (!state) + pm_runtime_forbid(&up->pdev->dev); + else + pm_runtime_allow(&up->pdev->dev); + } + + pm_runtime_put(&up->pdev->dev); } static void serial_omap_release_port(struct uart_port *port) @@ -847,7 +936,7 @@ static void serial_omap_config_port(struct uart_port *port, int flags) struct uart_omap_port *up = (struct uart_omap_port *)port; dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", - up->pdev->id); + up->port.line); up->port.type = PORT_OMAP; } @@ -864,7 +953,7 @@ serial_omap_type(struct uart_port *port) { struct uart_omap_port *up = (struct uart_omap_port *)port; - dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->pdev->id); + dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); return up->name; } @@ -906,19 +995,26 @@ static inline void wait_for_xmitr(struct uart_omap_port *up) static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch) { struct uart_omap_port *up = (struct uart_omap_port *)port; + + pm_runtime_get_sync(&up->pdev->dev); wait_for_xmitr(up); serial_out(up, UART_TX, ch); + pm_runtime_put(&up->pdev->dev); } static int serial_omap_poll_get_char(struct uart_port *port) { struct uart_omap_port *up = (struct uart_omap_port *)port; - unsigned int status = serial_in(up, UART_LSR); + unsigned int status; + pm_runtime_get_sync(&up->pdev->dev); + status = serial_in(up, UART_LSR); if (!(status & UART_LSR_DR)) return NO_POLL_CHAR; - return serial_in(up, UART_RX); + status = serial_in(up, UART_RX); + pm_runtime_put(&up->pdev->dev); + return status; } #endif /* CONFIG_CONSOLE_POLL */ @@ -946,6 +1042,8 @@ serial_omap_console_write(struct console *co, const char *s, unsigned int ier; int locked = 1; + pm_runtime_get_sync(&up->pdev->dev); + local_irq_save(flags); if (up->port.sysrq) locked = 0; @@ -978,6 +1076,8 @@ serial_omap_console_write(struct console *co, const char *s, if (up->msr_saved_flags) check_modem_status(up); + pm_runtime_mark_last_busy(&up->pdev->dev); + pm_runtime_put_autosuspend(&up->pdev->dev); if (locked) spin_unlock(&up->port.lock); local_irq_restore(flags); @@ -1014,7 +1114,7 @@ static struct console serial_omap_console = { static void serial_omap_add_console_port(struct uart_omap_port *up) { - serial_omap_console_ports[up->pdev->id] = up; + serial_omap_console_ports[up->port.line] = up; } #define OMAP_CONSOLE (&serial_omap_console) @@ -1060,26 +1160,30 @@ static struct uart_driver serial_omap_reg = { .cons = OMAP_CONSOLE, }; -static int -serial_omap_suspend(struct platform_device *pdev, pm_message_t state) +#ifdef CONFIG_SUSPEND +static int serial_omap_suspend(struct device *dev) { - struct uart_omap_port *up = platform_get_drvdata(pdev); + struct uart_omap_port *up = dev_get_drvdata(dev); - if (up) + if (up) { uart_suspend_port(&serial_omap_reg, &up->port); + flush_work_sync(&up->qos_work); + } + return 0; } -static int serial_omap_resume(struct platform_device *dev) +static int serial_omap_resume(struct device *dev) { - struct uart_omap_port *up = platform_get_drvdata(dev); + struct uart_omap_port *up = dev_get_drvdata(dev); if (up) uart_resume_port(&serial_omap_reg, &up->port); return 0; } +#endif -static void serial_omap_rx_timeout(unsigned long uart_no) +static void serial_omap_rxdma_poll(unsigned long uart_no) { struct uart_omap_port *up = ui[uart_no]; unsigned int curr_dma_pos, curr_transmitted_size; @@ -1089,9 +1193,9 @@ static void serial_omap_rx_timeout(unsigned long uart_no) if ((curr_dma_pos == up->uart_dma.prev_rx_dma_pos) || (curr_dma_pos == 0)) { if (jiffies_to_msecs(jiffies - up->port_activity) < - RX_TIMEOUT) { + up->uart_dma.rx_timeout) { mod_timer(&up->uart_dma.rx_timer, jiffies + - usecs_to_jiffies(up->uart_dma.rx_timeout)); + usecs_to_jiffies(up->uart_dma.rx_poll_rate)); } else { serial_omap_stop_rxdma(up); up->ier |= (UART_IER_RDI | UART_IER_RLSI); @@ -1120,7 +1224,7 @@ static void serial_omap_rx_timeout(unsigned long uart_no) } } else { mod_timer(&up->uart_dma.rx_timer, jiffies + - usecs_to_jiffies(up->uart_dma.rx_timeout)); + usecs_to_jiffies(up->uart_dma.rx_poll_rate)); } up->port_activity = jiffies; } @@ -1135,6 +1239,7 @@ static int serial_omap_start_rxdma(struct uart_omap_port *up) int ret = 0; if (up->uart_dma.rx_dma_channel == -1) { + pm_runtime_get_sync(&up->pdev->dev); ret = omap_request_dma(up->uart_dma.uart_dma_rx, "UART Rx DMA", (void *)uart_rx_dma_callback, up, @@ -1158,7 +1263,7 @@ static int serial_omap_start_rxdma(struct uart_omap_port *up) /* FIXME: Cache maintenance needed here? */ omap_start_dma(up->uart_dma.rx_dma_channel); mod_timer(&up->uart_dma.rx_timer, jiffies + - usecs_to_jiffies(up->uart_dma.rx_timeout)); + usecs_to_jiffies(up->uart_dma.rx_poll_rate)); up->uart_dma.rx_dma_used = true; return ret; } @@ -1221,6 +1326,19 @@ static void uart_tx_dma_callback(int lch, u16 ch_status, void *data) return; } +static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev) +{ + struct omap_uart_port_info *omap_up_info; + + omap_up_info = devm_kzalloc(dev, sizeof(*omap_up_info), GFP_KERNEL); + if (!omap_up_info) + return NULL; /* out of memory */ + + of_property_read_u32(dev->of_node, "clock-frequency", + &omap_up_info->uartclk); + return omap_up_info; +} + static int serial_omap_probe(struct platform_device *pdev) { struct uart_omap_port *up; @@ -1228,6 +1346,9 @@ static int serial_omap_probe(struct platform_device *pdev) struct omap_uart_port_info *omap_up_info = pdev->dev.platform_data; int ret = -ENOSPC; + if (pdev->dev.of_node) + omap_up_info = of_get_uart_port_info(&pdev->dev); + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) { dev_err(&pdev->dev, "no mem resource?\n"); @@ -1263,7 +1384,6 @@ static int serial_omap_probe(struct platform_device *pdev) ret = -ENOMEM; goto do_release_region; } - sprintf(up->name, "OMAP UART%d", pdev->id); up->pdev = pdev; up->port.dev = &pdev->dev; up->port.type = PORT_OMAP; @@ -1273,34 +1393,74 @@ static int serial_omap_probe(struct platform_device *pdev) up->port.regshift = 2; up->port.fifosize = 64; up->port.ops = &serial_omap_pops; - up->port.line = pdev->id; - up->port.membase = omap_up_info->membase; - up->port.mapbase = omap_up_info->mapbase; + if (pdev->dev.of_node) + up->port.line = of_alias_get_id(pdev->dev.of_node, "serial"); + else + up->port.line = pdev->id; + + if (up->port.line < 0) { + dev_err(&pdev->dev, "failed to get alias/pdev id, errno %d\n", + up->port.line); + ret = -ENODEV; + goto err; + } + + sprintf(up->name, "OMAP UART%d", up->port.line); + up->port.mapbase = mem->start; + up->port.membase = ioremap(mem->start, resource_size(mem)); + if (!up->port.membase) { + dev_err(&pdev->dev, "can't ioremap UART\n"); + ret = -ENOMEM; + goto err; + } + up->port.flags = omap_up_info->flags; - up->port.irqflags = omap_up_info->irqflags; up->port.uartclk = omap_up_info->uartclk; + if (!up->port.uartclk) { + up->port.uartclk = DEFAULT_CLK_SPEED; + dev_warn(&pdev->dev, "No clock speed specified: using default:" + "%d\n", DEFAULT_CLK_SPEED); + } up->uart_dma.uart_base = mem->start; + up->errata = omap_up_info->errata; if (omap_up_info->dma_enabled) { up->uart_dma.uart_dma_tx = dma_tx->start; up->uart_dma.uart_dma_rx = dma_rx->start; up->use_dma = 1; - up->uart_dma.rx_buf_size = 4096; - up->uart_dma.rx_timeout = 2; + up->uart_dma.rx_buf_size = omap_up_info->dma_rx_buf_size; + up->uart_dma.rx_timeout = omap_up_info->dma_rx_timeout; + up->uart_dma.rx_poll_rate = omap_up_info->dma_rx_poll_rate; spin_lock_init(&(up->uart_dma.tx_lock)); spin_lock_init(&(up->uart_dma.rx_lock)); up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE; up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE; } - ui[pdev->id] = up; + up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; + up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; + pm_qos_add_request(&up->pm_qos_request, + PM_QOS_CPU_DMA_LATENCY, up->latency); + serial_omap_uart_wq = create_singlethread_workqueue(up->name); + INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); + + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, + omap_up_info->autosuspend_timeout); + + pm_runtime_irq_safe(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); + + ui[up->port.line] = up; serial_omap_add_console_port(up); ret = uart_add_one_port(&serial_omap_reg, &up->port); if (ret != 0) goto do_release_region; + pm_runtime_put(&pdev->dev); platform_set_drvdata(pdev, up); return 0; err: @@ -1315,22 +1475,168 @@ static int serial_omap_remove(struct platform_device *dev) { struct uart_omap_port *up = platform_get_drvdata(dev); - platform_set_drvdata(dev, NULL); if (up) { + pm_runtime_disable(&up->pdev->dev); uart_remove_one_port(&serial_omap_reg, &up->port); + pm_qos_remove_request(&up->pm_qos_request); + kfree(up); } + + platform_set_drvdata(dev, NULL); + return 0; +} + +/* + * Work Around for Errata i202 (2430, 3430, 3630, 4430 and 4460) + * The access to uart register after MDR1 Access + * causes UART to corrupt data. + * + * Need a delay = + * 5 L4 clock cycles + 5 UART functional clock cycle (@48MHz = ~0.2uS) + * give 10 times as much + */ +static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) +{ + u8 timeout = 255; + + serial_out(up, UART_OMAP_MDR1, mdr1); + udelay(2); + serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | + UART_FCR_CLEAR_RCVR); + /* + * Wait for FIFO to empty: when empty, RX_FIFO_E bit is 0 and + * TX_FIFO_E bit is 1. + */ + while (UART_LSR_THRE != (serial_in(up, UART_LSR) & + (UART_LSR_THRE | UART_LSR_DR))) { + timeout--; + if (!timeout) { + /* Should *never* happen. we warn and carry on */ + dev_crit(&up->pdev->dev, "Errata i202: timedout %x\n", + serial_in(up, UART_LSR)); + break; + } + udelay(1); + } +} + +static void serial_omap_restore_context(struct uart_omap_port *up) +{ + if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) + serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); + else + serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); + + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ + serial_out(up, UART_EFR, UART_EFR_ECB); + serial_out(up, UART_LCR, 0x0); /* Operational mode */ + serial_out(up, UART_IER, 0x0); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ + serial_out(up, UART_DLL, up->dll); + serial_out(up, UART_DLM, up->dlh); + serial_out(up, UART_LCR, 0x0); /* Operational mode */ + serial_out(up, UART_IER, up->ier); + serial_out(up, UART_FCR, up->fcr); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + serial_out(up, UART_MCR, up->mcr); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ + serial_out(up, UART_OMAP_SCR, up->scr); + serial_out(up, UART_EFR, up->efr); + serial_out(up, UART_LCR, up->lcr); + if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) + serial_omap_mdr1_errataset(up, up->mdr1); + else + serial_out(up, UART_OMAP_MDR1, up->mdr1); +} + +#ifdef CONFIG_PM_RUNTIME +static int serial_omap_runtime_suspend(struct device *dev) +{ + struct uart_omap_port *up = dev_get_drvdata(dev); + struct omap_uart_port_info *pdata = dev->platform_data; + + if (!up) + return -EINVAL; + + if (!pdata || !pdata->enable_wakeup) + return 0; + + if (pdata->get_context_loss_count) + up->context_loss_cnt = pdata->get_context_loss_count(dev); + + if (device_may_wakeup(dev)) { + if (!up->wakeups_enabled) { + pdata->enable_wakeup(up->pdev, true); + up->wakeups_enabled = true; + } + } else { + if (up->wakeups_enabled) { + pdata->enable_wakeup(up->pdev, false); + up->wakeups_enabled = false; + } + } + + /* Errata i291 */ + if (up->use_dma && pdata->set_forceidle && + (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE)) + pdata->set_forceidle(up->pdev); + + up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; + schedule_work(&up->qos_work); + + return 0; +} + +static int serial_omap_runtime_resume(struct device *dev) +{ + struct uart_omap_port *up = dev_get_drvdata(dev); + struct omap_uart_port_info *pdata = dev->platform_data; + + if (up) { + if (pdata->get_context_loss_count) { + u32 loss_cnt = pdata->get_context_loss_count(dev); + + if (up->context_loss_cnt != loss_cnt) + serial_omap_restore_context(up); + } + + /* Errata i291 */ + if (up->use_dma && pdata->set_noidle && + (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE)) + pdata->set_noidle(up->pdev); + + up->latency = up->calc_latency; + schedule_work(&up->qos_work); + } + return 0; } +#endif + +static const struct dev_pm_ops serial_omap_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(serial_omap_suspend, serial_omap_resume) + SET_RUNTIME_PM_OPS(serial_omap_runtime_suspend, + serial_omap_runtime_resume, NULL) +}; + +#if defined(CONFIG_OF) +static const struct of_device_id omap_serial_of_match[] = { + { .compatible = "ti,omap2-uart" }, + { .compatible = "ti,omap3-uart" }, + { .compatible = "ti,omap4-uart" }, + {}, +}; +MODULE_DEVICE_TABLE(of, omap_serial_of_match); +#endif static struct platform_driver serial_omap_driver = { .probe = serial_omap_probe, .remove = serial_omap_remove, - - .suspend = serial_omap_suspend, - .resume = serial_omap_resume, .driver = { .name = DRIVER_NAME, + .pm = &serial_omap_dev_pm_ops, + .of_match_table = of_match_ptr(omap_serial_of_match), }, }; |