From a45adf1ce8012f67fe6014175f666ab2960e0350 Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Tue, 26 Jul 2011 16:54:25 +0200 Subject: imx51: add pata device Declare the pata device found on mx51 Signed-off-by: Arnaud Patard Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/devices-imx51.h | 4 +++ arch/arm/plat-mxc/devices/Kconfig | 3 ++ arch/arm/plat-mxc/devices/Makefile | 1 + arch/arm/plat-mxc/devices/platform-pata_imx.c | 38 +++++++++++++++++++++++++ arch/arm/plat-mxc/include/mach/devices-common.h | 7 +++++ 5 files changed, 53 insertions(+) create mode 100644 arch/arm/plat-mxc/devices/platform-pata_imx.c diff --git a/arch/arm/mach-mx5/devices-imx51.h b/arch/arm/mach-mx5/devices-imx51.h index e11bc0e0ec4..89fe77ffb4d 100644 --- a/arch/arm/mach-mx5/devices-imx51.h +++ b/arch/arm/mach-mx5/devices-imx51.h @@ -52,3 +52,7 @@ extern const struct imx_mxc_pwm_data imx51_mxc_pwm_data[]; extern const struct imx_imx_keypad_data imx51_imx_keypad_data; #define imx51_add_imx_keypad(pdata) \ imx_add_imx_keypad(&imx51_imx_keypad_data, pdata) + +extern const struct imx_pata_imx_data imx51_pata_imx_data; +#define imx51_add_pata_imx() \ + imx_add_pata_imx(&imx51_pata_imx_data) diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig index bd294add932..c55916ce3d2 100644 --- a/arch/arm/plat-mxc/devices/Kconfig +++ b/arch/arm/plat-mxc/devices/Kconfig @@ -31,6 +31,9 @@ config IMX_HAVE_PLATFORM_IMX_I2C config IMX_HAVE_PLATFORM_IMX_KEYPAD bool +config IMX_HAVE_PLATFORM_PATA_IMX + bool + config IMX_HAVE_PLATFORM_IMX_SSI bool diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile index b41bf972b54..a093b454541 100644 --- a/arch/arm/plat-mxc/devices/Makefile +++ b/arch/arm/plat-mxc/devices/Makefile @@ -10,6 +10,7 @@ obj-y += platform-imx-dma.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_FB) += platform-imx-fb.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_I2C) += platform-imx-i2c.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_KEYPAD) += platform-imx-keypad.o +obj-$(CONFIG_IMX_HAVE_PLATFORM_PATA_IMX) += platform-pata_imx.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_SSI) += platform-imx-ssi.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UART) += platform-imx-uart.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UDC) += platform-imx_udc.o diff --git a/arch/arm/plat-mxc/devices/platform-pata_imx.c b/arch/arm/plat-mxc/devices/platform-pata_imx.c new file mode 100644 index 00000000000..c1cbaf92e35 --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-pata_imx.c @@ -0,0 +1,38 @@ +/* + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ +#include +#include + +#define imx_pata_imx_data_entry_single(soc) \ + { \ + .iobase = soc ## _ATA_BASE_ADDR, \ + .irq = soc ## _MXC_INT_ATA, \ + } + +#ifdef CONFIG_SOC_IMX51 +const struct imx_pata_imx_data imx51_pata_imx_data __initconst = + imx_pata_imx_data_entry_single(MX51); +#endif /* ifdef CONFIG_SOC_IMX51 */ + +struct platform_device *__init imx_add_pata_imx( + const struct imx_pata_imx_data *data) +{ + struct resource res[] = { + { + .start = data->iobase, + .end = data->iobase + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = data->irq, + .end = data->irq, + .flags = IORESOURCE_IRQ, + }, + }; + return imx_add_platform_device("pata_imx", -1, + res, ARRAY_SIZE(res), NULL, 0); +} + diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h index 524538aabc4..1b76c67d5d3 100644 --- a/arch/arm/plat-mxc/include/mach/devices-common.h +++ b/arch/arm/plat-mxc/include/mach/devices-common.h @@ -251,6 +251,13 @@ struct platform_device *__init imx_add_mxc_nand( const struct imx_mxc_nand_data *data, const struct mxc_nand_platform_data *pdata); +struct imx_pata_imx_data { + resource_size_t iobase; + resource_size_t irq; +}; +struct platform_device *__init imx_add_pata_imx( + const struct imx_pata_imx_data *data); + struct imx_mxc_pwm_data { int id; resource_size_t iobase; -- cgit v1.2.3-70-g09d2 From 5bc59bff8c3ee0971fbddb8d6885cb5f30f91c5a Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Tue, 26 Jul 2011 16:54:26 +0200 Subject: imx51: add pata clock Define the clock used by the imx51 pata device. Signed-off-by: Arnaud Patard Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 7f20308c4db..b6531333ba1 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1414,6 +1414,10 @@ DEFINE_CLOCK(ipu_di0_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG5_OFFSET, DEFINE_CLOCK(ipu_di1_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG6_OFFSET, NULL, NULL, &pll3_sw_clk, NULL); +/* PATA */ +DEFINE_CLOCK(pata_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); + #define _REGISTER_CLOCK(d, n, c) \ { \ .dev_id = d, \ @@ -1470,6 +1474,7 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("imx-ipuv3", "di0", ipu_di0_clk) _REGISTER_CLOCK("imx-ipuv3", "di1", ipu_di1_clk) _REGISTER_CLOCK(NULL, "gpc_dvfs", gpc_dvfs_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) }; static struct clk_lookup mx53_lookups[] = { -- cgit v1.2.3-70-g09d2 From d8f4059bf96d9bc1b8d2003602404f3d011ac9f2 Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Tue, 26 Jul 2011 16:54:27 +0200 Subject: imx: efika: Enable pata. Enable pata support on efika mx/sb platforms. Signed-off-by: Arnaud Patard Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/Kconfig | 1 + arch/arm/mach-mx5/mx51_efika.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig index b4e7c58bbb3..28b94e0e04b 100644 --- a/arch/arm/mach-mx5/Kconfig +++ b/arch/arm/mach-mx5/Kconfig @@ -147,6 +147,7 @@ config MX51_EFIKA_COMMON bool select SOC_IMX51 select IMX_HAVE_PLATFORM_IMX_UART + select IMX_HAVE_PLATFORM_PATA_IMX select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX select IMX_HAVE_PLATFORM_SPI_IMX select MXC_ULPI if USB_ULPI diff --git a/arch/arm/mach-mx5/mx51_efika.c b/arch/arm/mach-mx5/mx51_efika.c index 4435e03cea5..31c152e9def 100644 --- a/arch/arm/mach-mx5/mx51_efika.c +++ b/arch/arm/mach-mx5/mx51_efika.c @@ -627,6 +627,8 @@ void __init efika_board_common_init(void) ARRAY_SIZE(mx51_efika_spi_board_info)); imx51_add_ecspi(0, &mx51_efika_spi_pdata); + imx51_add_pata_imx(); + #if defined(CONFIG_CPU_FREQ_IMX) get_cpu_op = mx51_get_cpu_op; #endif -- cgit v1.2.3-70-g09d2 From 236c4e8be436380b5354fe0d7facf94688e024ec Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 23 Aug 2011 17:18:06 -0300 Subject: ARM: imx: Add PATA resources for other i.MX processors MX27/31/35/53 also have PATA block. Add PATA resources for them. Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/devices/platform-pata_imx.c | 29 +++++++++++++++++++++---- arch/arm/plat-mxc/include/mach/devices-common.h | 1 + arch/arm/plat-mxc/include/mach/mx35.h | 2 +- 3 files changed, 27 insertions(+), 5 deletions(-) diff --git a/arch/arm/plat-mxc/devices/platform-pata_imx.c b/arch/arm/plat-mxc/devices/platform-pata_imx.c index c1cbaf92e35..de33048aad6 100644 --- a/arch/arm/plat-mxc/devices/platform-pata_imx.c +++ b/arch/arm/plat-mxc/devices/platform-pata_imx.c @@ -6,24 +6,45 @@ #include #include -#define imx_pata_imx_data_entry_single(soc) \ +#define imx_pata_imx_data_entry_single(soc, _size) \ { \ .iobase = soc ## _ATA_BASE_ADDR, \ - .irq = soc ## _MXC_INT_ATA, \ + .iosize = _size, \ + .irq = soc ## _INT_ATA, \ } +#ifdef CONFIG_SOC_IMX27 +const struct imx_pata_imx_data imx27_pata_imx_data __initconst = + imx_pata_imx_data_entry_single(MX27, SZ_4K); +#endif /* ifdef CONFIG_SOC_IMX27 */ + +#ifdef CONFIG_SOC_IMX31 +const struct imx_pata_imx_data imx31_pata_imx_data __initconst = + imx_pata_imx_data_entry_single(MX31, SZ_16K); +#endif /* ifdef CONFIG_SOC_IMX31 */ + +#ifdef CONFIG_SOC_IMX35 +const struct imx_pata_imx_data imx35_pata_imx_data __initconst = + imx_pata_imx_data_entry_single(MX35, SZ_16K); +#endif /* ifdef CONFIG_SOC_IMX35 */ + #ifdef CONFIG_SOC_IMX51 const struct imx_pata_imx_data imx51_pata_imx_data __initconst = - imx_pata_imx_data_entry_single(MX51); + imx_pata_imx_data_entry_single(MX51, SZ_16K); #endif /* ifdef CONFIG_SOC_IMX51 */ +#ifdef CONFIG_SOC_IMX53 +const struct imx_pata_imx_data imx53_pata_imx_data __initconst = + imx_pata_imx_data_entry_single(MX53, SZ_16K); +#endif /* ifdef CONFIG_SOC_IMX53 */ + struct platform_device *__init imx_add_pata_imx( const struct imx_pata_imx_data *data) { struct resource res[] = { { .start = data->iobase, - .end = data->iobase + SZ_16K - 1, + .end = data->iobase + data->iobase - 1, .flags = IORESOURCE_MEM, }, { diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h index 1b76c67d5d3..4cbad45edc1 100644 --- a/arch/arm/plat-mxc/include/mach/devices-common.h +++ b/arch/arm/plat-mxc/include/mach/devices-common.h @@ -253,6 +253,7 @@ struct platform_device *__init imx_add_mxc_nand( struct imx_pata_imx_data { resource_size_t iobase; + resource_size_t iosize; resource_size_t irq; }; struct platform_device *__init imx_add_pata_imx( diff --git a/arch/arm/plat-mxc/include/mach/mx35.h b/arch/arm/plat-mxc/include/mach/mx35.h index d13dbfeef08..80965a99aa5 100644 --- a/arch/arm/plat-mxc/include/mach/mx35.h +++ b/arch/arm/plat-mxc/include/mach/mx35.h @@ -36,7 +36,7 @@ #define MX35_UART3_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x0c000) #define MX35_CSPI2_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x10000) #define MX35_SSI2_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x14000) -#define MX35_ATA_DMA_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x20000) +#define MX35_ATA_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x20000) #define MX35_MSHC1_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x24000) #define MX35_FEC_BASE_ADDR 0x50038000 #define MX35_SPBA_CTRL_BASE_ADDR (MX35_SPBA0_BASE_ADDR + 0x3c000) -- cgit v1.2.3-70-g09d2 From 03b20b07be130e44faf29f787c66ce5cce5afb2a Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 23 Aug 2011 17:18:07 -0300 Subject: ARM: imx: Add PATA clock support Add PATA clock support for MX27/MX31/MX35/MX53. Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/clock-imx27.c | 4 ++-- arch/arm/mach-imx/clock-imx31.c | 4 ++-- arch/arm/mach-imx/clock-imx35.c | 4 ++-- arch/arm/mach-mx5/clock-mx51-mx53.c | 1 + 4 files changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c index 6912b821b37..becc92e0b95 100644 --- a/arch/arm/mach-imx/clock-imx27.c +++ b/arch/arm/mach-imx/clock-imx27.c @@ -583,7 +583,7 @@ DEFINE_CLOCK(emi_clk, 0, PCCR1, 19, NULL, NULL, &ahb_clk); DEFINE_CLOCK(dma_clk1, 0, PCCR1, 20, NULL, NULL, &ahb_clk); DEFINE_CLOCK(csi_clk1, 0, PCCR1, 21, NULL, NULL, &ahb_clk); DEFINE_CLOCK(brom_clk, 0, PCCR1, 22, NULL, NULL, &ahb_clk); -DEFINE_CLOCK(ata_clk, 0, PCCR1, 23, NULL, NULL, &ahb_clk); +DEFINE_CLOCK(pata_clk, 0, PCCR1, 23, NULL, NULL, &ahb_clk); DEFINE_CLOCK(wdog_clk, 0, PCCR1, 24, NULL, NULL, &ipg_clk); DEFINE_CLOCK(usb_clk, 0, PCCR1, 25, get_rate_usb, &usb_clk1, &spll_clk); DEFINE_CLOCK(uart6_clk1, 0, PCCR1, 26, NULL, NULL, &ipg_clk); @@ -666,7 +666,7 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK("imx27-fec.0", NULL, fec_clk) _REGISTER_CLOCK(NULL, "emi", emi_clk) _REGISTER_CLOCK(NULL, "sahara2", sahara2_clk) - _REGISTER_CLOCK(NULL, "ata", ata_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) _REGISTER_CLOCK(NULL, "mstick", mstick_clk) _REGISTER_CLOCK("imx2-wdt.0", NULL, wdog_clk) _REGISTER_CLOCK(NULL, "gpio", gpio_clk) diff --git a/arch/arm/mach-imx/clock-imx31.c b/arch/arm/mach-imx/clock-imx31.c index d973770b1f9..58ea0a857ef 100644 --- a/arch/arm/mach-imx/clock-imx31.c +++ b/arch/arm/mach-imx/clock-imx31.c @@ -476,7 +476,7 @@ DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CGR0, 4, NULL, NULL, &perclk_clk); DEFINE_CLOCK(epit1_clk, 0, MXC_CCM_CGR0, 6, NULL, NULL, &perclk_clk); DEFINE_CLOCK(epit2_clk, 1, MXC_CCM_CGR0, 8, NULL, NULL, &perclk_clk); DEFINE_CLOCK(iim_clk, 0, MXC_CCM_CGR0, 10, NULL, NULL, &ipg_clk); -DEFINE_CLOCK(ata_clk, 0, MXC_CCM_CGR0, 12, NULL, NULL, &ipg_clk); +DEFINE_CLOCK(pata_clk, 0, MXC_CCM_CGR0, 12, NULL, NULL, &ipg_clk); DEFINE_CLOCK(sdma_clk1, 0, MXC_CCM_CGR0, 14, NULL, NULL, &ahb_clk); DEFINE_CLOCK(cspi3_clk, 2, MXC_CCM_CGR0, 16, NULL, NULL, &ipg_clk); DEFINE_CLOCK(rng_clk, 0, MXC_CCM_CGR0, 18, NULL, NULL, &ipg_clk); @@ -562,7 +562,7 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) _REGISTER_CLOCK(NULL, "firi", firi_clk) - _REGISTER_CLOCK(NULL, "ata", ata_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) _REGISTER_CLOCK(NULL, "rtic", rtic_clk) _REGISTER_CLOCK(NULL, "rng", rng_clk) _REGISTER_CLOCK("imx31-sdma", NULL, sdma_clk1) diff --git a/arch/arm/mach-imx/clock-imx35.c b/arch/arm/mach-imx/clock-imx35.c index 88b62a071ae..c39f5c3e20b 100644 --- a/arch/arm/mach-imx/clock-imx35.c +++ b/arch/arm/mach-imx/clock-imx35.c @@ -354,7 +354,7 @@ static void clk_cgr_disable(struct clk *clk) } DEFINE_CLOCK(asrc_clk, 0, CCM_CGR0, 0, NULL, NULL); -DEFINE_CLOCK(ata_clk, 0, CCM_CGR0, 2, get_rate_ipg, NULL); +DEFINE_CLOCK(pata_clk, 0, CCM_CGR0, 2, get_rate_ipg, NULL); /* DEFINE_CLOCK(audmux_clk, 0, CCM_CGR0, 4, NULL, NULL); */ DEFINE_CLOCK(can1_clk, 0, CCM_CGR0, 6, get_rate_ipg, NULL); DEFINE_CLOCK(can2_clk, 1, CCM_CGR0, 8, get_rate_ipg, NULL); @@ -447,7 +447,7 @@ static struct clk nfc_clk = { static struct clk_lookup lookups[] = { _REGISTER_CLOCK(NULL, "asrc", asrc_clk) - _REGISTER_CLOCK(NULL, "ata", ata_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) _REGISTER_CLOCK("flexcan.0", NULL, can1_clk) _REGISTER_CLOCK("flexcan.1", NULL, can2_clk) _REGISTER_CLOCK("imx35-cspi.0", NULL, cspi1_clk) diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index b6531333ba1..3fcb5960ac1 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1508,6 +1508,7 @@ static struct clk_lookup mx53_lookups[] = { _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk) _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) }; static void clk_tree_init(void) -- cgit v1.2.3-70-g09d2 From d5534ba6c783a36332e55036273411f4d14b9af6 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 24 Aug 2011 12:04:14 -0300 Subject: ARM: imx: Define functions for registering PATA Define functions for registering PATA on MX27/MX31/MX35/MX53. Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/devices-imx27.h | 4 ++++ arch/arm/mach-imx/devices-imx31.h | 4 ++++ arch/arm/mach-imx/devices-imx35.h | 4 ++++ arch/arm/mach-mx5/devices-imx53.h | 4 ++++ 4 files changed, 16 insertions(+) diff --git a/arch/arm/mach-imx/devices-imx27.h b/arch/arm/mach-imx/devices-imx27.h index 7f97a3cdd41..2f727d7c380 100644 --- a/arch/arm/mach-imx/devices-imx27.h +++ b/arch/arm/mach-imx/devices-imx27.h @@ -76,3 +76,7 @@ extern const struct imx_spi_imx_data imx27_cspi_data[]; #define imx27_add_spi_imx0(pdata) imx27_add_cspi(0, pdata) #define imx27_add_spi_imx1(pdata) imx27_add_cspi(1, pdata) #define imx27_add_spi_imx2(pdata) imx27_add_cspi(2, pdata) + +extern const struct imx_pata_imx_data imx27_pata_imx_data; +#define imx27_add_pata_imx() \ + imx_add_pata_imx(&imx27_pata_imx_data) diff --git a/arch/arm/mach-imx/devices-imx31.h b/arch/arm/mach-imx/devices-imx31.h index dbe940d9c53..488e241a6db 100644 --- a/arch/arm/mach-imx/devices-imx31.h +++ b/arch/arm/mach-imx/devices-imx31.h @@ -78,3 +78,7 @@ extern const struct imx_spi_imx_data imx31_cspi_data[]; #define imx31_add_spi_imx0(pdata) imx31_add_cspi(0, pdata) #define imx31_add_spi_imx1(pdata) imx31_add_cspi(1, pdata) #define imx31_add_spi_imx2(pdata) imx31_add_cspi(2, pdata) + +extern const struct imx_pata_imx_data imx31_pata_imx_data; +#define imx31_add_pata_imx() \ + imx_add_pata_imx(&imx31_pata_imx_data) diff --git a/arch/arm/mach-imx/devices-imx35.h b/arch/arm/mach-imx/devices-imx35.h index 234cbd3c18a..7b99ef0bb50 100644 --- a/arch/arm/mach-imx/devices-imx35.h +++ b/arch/arm/mach-imx/devices-imx35.h @@ -81,3 +81,7 @@ extern const struct imx_spi_imx_data imx35_cspi_data[]; imx_add_spi_imx(&imx35_cspi_data[id], pdata) #define imx35_add_spi_imx0(pdata) imx35_add_cspi(0, pdata) #define imx35_add_spi_imx1(pdata) imx35_add_cspi(1, pdata) + +extern const struct imx_pata_imx_data imx35_pata_imx_data; +#define imx35_add_pata_imx() \ + imx_add_pata_imx(&imx35_pata_imx_data) diff --git a/arch/arm/mach-mx5/devices-imx53.h b/arch/arm/mach-mx5/devices-imx53.h index c27fe8bb476..7ca5d0c76f8 100644 --- a/arch/arm/mach-mx5/devices-imx53.h +++ b/arch/arm/mach-mx5/devices-imx53.h @@ -40,3 +40,7 @@ extern const struct imx_imx_ssi_data imx53_imx_ssi_data[]; extern const struct imx_imx_keypad_data imx53_imx_keypad_data; #define imx53_add_imx_keypad(pdata) \ imx_add_imx_keypad(&imx53_imx_keypad_data, pdata) + +extern const struct imx_pata_imx_data imx53_pata_imx_data; +#define imx53_add_pata_imx() \ + imx_add_pata_imx(&imx53_pata_imx_data) -- cgit v1.2.3-70-g09d2 From 318007e9001349db9b4fcd49e9e79a7636dba7a9 Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Sat, 27 Aug 2011 15:19:00 +0200 Subject: Fix pata imx resource Commit 236c4e8be436380b5354fe0d7facf94688e024ec "ARM: imx: Add PATA resources for other i.MX processors" has broken resource declaration of pata_imx device by using iobase instead of iosize. Signed-off-by: Arnaud Patard Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/devices/platform-pata_imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/plat-mxc/devices/platform-pata_imx.c b/arch/arm/plat-mxc/devices/platform-pata_imx.c index de33048aad6..70e2f2a4471 100644 --- a/arch/arm/plat-mxc/devices/platform-pata_imx.c +++ b/arch/arm/plat-mxc/devices/platform-pata_imx.c @@ -44,7 +44,7 @@ struct platform_device *__init imx_add_pata_imx( struct resource res[] = { { .start = data->iobase, - .end = data->iobase + data->iobase - 1, + .end = data->iobase + data->iosize - 1, .flags = IORESOURCE_MEM, }, { -- cgit v1.2.3-70-g09d2 From 97915bdf3c1833e7855272788a24b191a17c67f4 Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Wed, 28 Sep 2011 15:41:53 +0800 Subject: AHCI Add the AHCI SATA feature on the MX53 platforms Signed-off-by: Richard Zhu Tested-by: Hector Oron Martinez Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 19 +++ arch/arm/mach-mx5/devices-imx53.h | 2 + arch/arm/plat-mxc/devices/Kconfig | 4 + arch/arm/plat-mxc/devices/Makefile | 1 + arch/arm/plat-mxc/devices/platform-ahci-imx.c | 156 ++++++++++++++++++++++++ arch/arm/plat-mxc/include/mach/devices-common.h | 10 ++ 6 files changed, 192 insertions(+) create mode 100644 arch/arm/plat-mxc/devices/platform-ahci-imx.c diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index f7bf996f463..1ef7e97e001 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1401,6 +1401,22 @@ static struct clk esdhc4_mx53_clk = { .secondary = &esdhc4_ipg_clk, }; +static struct clk sata_clk = { + .parent = &ipg_clk, + .enable = _clk_max_enable, + .enable_reg = MXC_CCM_CCGR4, + .enable_shift = MXC_CCM_CCGRx_CG1_OFFSET, + .disable = _clk_max_disable, +}; + +static struct clk ahci_phy_clk = { + .parent = &usb_phy1_clk, +}; + +static struct clk ahci_dma_clk = { + .parent = &ahb_clk, +}; + DEFINE_CLOCK(mipi_esc_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG5_OFFSET, NULL, NULL, NULL, &pll2_sw_clk); DEFINE_CLOCK(mipi_hsc2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG4_OFFSET, NULL, NULL, &mipi_esc_clk, &pll2_sw_clk); DEFINE_CLOCK(mipi_hsc1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG3_OFFSET, NULL, NULL, &mipi_hsc2_clk, &pll2_sw_clk); @@ -1507,6 +1523,9 @@ static struct clk_lookup mx53_lookups[] = { _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk) _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci", sata_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci_phy", ahci_phy_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci_dma", ahci_dma_clk) }; static void clk_tree_init(void) diff --git a/arch/arm/mach-mx5/devices-imx53.h b/arch/arm/mach-mx5/devices-imx53.h index c27fe8bb476..1ab399e73ca 100644 --- a/arch/arm/mach-mx5/devices-imx53.h +++ b/arch/arm/mach-mx5/devices-imx53.h @@ -40,3 +40,5 @@ extern const struct imx_imx_ssi_data imx53_imx_ssi_data[]; extern const struct imx_imx_keypad_data imx53_imx_keypad_data; #define imx53_add_imx_keypad(pdata) \ imx_add_imx_keypad(&imx53_imx_keypad_data, pdata) + +extern struct platform_device *__init imx53_add_ahci_imx(void); diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig index bd294add932..f63887ba88b 100644 --- a/arch/arm/plat-mxc/devices/Kconfig +++ b/arch/arm/plat-mxc/devices/Kconfig @@ -76,3 +76,7 @@ config IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX config IMX_HAVE_PLATFORM_SPI_IMX bool + +config IMX_HAVE_PLATFORM_AHCI + bool + default y if ARCH_MX53 diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile index b41bf972b54..e858ad92c3e 100644 --- a/arch/arm/plat-mxc/devices/Makefile +++ b/arch/arm/plat-mxc/devices/Makefile @@ -25,3 +25,4 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_RTC) += platform-mxc_rtc.o obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) += platform-spi_imx.o +obj-$(CONFIG_IMX_HAVE_PLATFORM_AHCI) += platform-ahci-imx.o diff --git a/arch/arm/plat-mxc/devices/platform-ahci-imx.c b/arch/arm/plat-mxc/devices/platform-ahci-imx.c new file mode 100644 index 00000000000..d8a56aee521 --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-ahci-imx.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * 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; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define imx_ahci_imx_data_entry_single(soc, _devid) \ + { \ + .devid = _devid, \ + .iobase = soc ## _SATA_BASE_ADDR, \ + .irq = soc ## _INT_SATA, \ + } + +#ifdef CONFIG_SOC_IMX53 +const struct imx_ahci_imx_data imx53_ahci_imx_data __initconst = + imx_ahci_imx_data_entry_single(MX53, "imx53-ahci"); +#endif + +enum { + HOST_CAP = 0x00, + HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */ + HOST_PORTS_IMPL = 0x0c, + HOST_TIMER1MS = 0xe0, /* Timer 1-ms */ +}; + +static struct clk *sata_clk, *sata_ref_clk; + +/* AHCI module Initialization, if return 0, initialization is successful. */ +static int imx_sata_init(struct device *dev, void __iomem *addr) +{ + u32 tmpdata; + int ret = 0; + struct clk *clk; + + sata_clk = clk_get(dev, "ahci"); + if (IS_ERR(sata_clk)) { + dev_err(dev, "no sata clock.\n"); + return PTR_ERR(sata_clk); + } + ret = clk_enable(sata_clk); + if (ret) { + dev_err(dev, "can't enable sata clock.\n"); + goto put_sata_clk; + } + + /* Get the AHCI SATA PHY CLK */ + sata_ref_clk = clk_get(dev, "ahci_phy"); + if (IS_ERR(sata_ref_clk)) { + dev_err(dev, "no sata ref clock.\n"); + ret = PTR_ERR(sata_ref_clk); + goto release_sata_clk; + } + ret = clk_enable(sata_ref_clk); + if (ret) { + dev_err(dev, "can't enable sata ref clock.\n"); + goto put_sata_ref_clk; + } + + /* Get the AHB clock rate, and configure the TIMER1MS reg later */ + clk = clk_get(dev, "ahci_dma"); + if (IS_ERR(clk)) { + dev_err(dev, "no dma clock.\n"); + ret = PTR_ERR(clk); + goto release_sata_ref_clk; + } + tmpdata = clk_get_rate(clk) / 1000; + clk_put(clk); + + writel(tmpdata, addr + HOST_TIMER1MS); + + tmpdata = readl(addr + HOST_CAP); + if (!(tmpdata & HOST_CAP_SSS)) { + tmpdata |= HOST_CAP_SSS; + writel(tmpdata, addr + HOST_CAP); + } + + if (!(readl(addr + HOST_PORTS_IMPL) & 0x1)) + writel((readl(addr + HOST_PORTS_IMPL) | 0x1), + addr + HOST_PORTS_IMPL); + + return 0; + +release_sata_ref_clk: + clk_disable(sata_ref_clk); +put_sata_ref_clk: + clk_put(sata_ref_clk); +release_sata_clk: + clk_disable(sata_clk); +put_sata_clk: + clk_put(sata_clk); + + return ret; +} + +static void imx_sata_exit(struct device *dev) +{ + clk_disable(sata_ref_clk); + clk_put(sata_ref_clk); + + clk_disable(sata_clk); + clk_put(sata_clk); + +} +struct platform_device *__init imx_add_ahci_imx( + const struct imx_ahci_imx_data *data, + const struct ahci_platform_data *pdata) +{ + struct resource res[] = { + { + .start = data->iobase, + .end = data->iobase + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = data->irq, + .end = data->irq, + .flags = IORESOURCE_IRQ, + }, + }; + + return imx_add_platform_device_dmamask(data->devid, 0, + res, ARRAY_SIZE(res), + pdata, sizeof(*pdata), DMA_BIT_MASK(32)); +} + +struct platform_device *__init imx53_add_ahci_imx(void) +{ + struct ahci_platform_data pdata = { + .init = imx_sata_init, + .exit = imx_sata_exit, + }; + + return imx_add_ahci_imx(&imx53_ahci_imx_data, &pdata); +} diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h index 524538aabc4..f04e063f355 100644 --- a/arch/arm/plat-mxc/include/mach/devices-common.h +++ b/arch/arm/plat-mxc/include/mach/devices-common.h @@ -301,3 +301,13 @@ struct platform_device *__init imx_add_spi_imx( struct platform_device *imx_add_imx_dma(void); struct platform_device *imx_add_imx_sdma(char *name, resource_size_t iobase, int irq, struct sdma_platform_data *pdata); + +#include +struct imx_ahci_imx_data { + const char *devid; + resource_size_t iobase; + resource_size_t irq; +}; +struct platform_device *__init imx_add_ahci_imx( + const struct imx_ahci_imx_data *data, + const struct ahci_platform_data *pdata); -- cgit v1.2.3-70-g09d2 From e97e303d801f9ab74590ff5d56e614e811efe98b Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Wed, 28 Sep 2011 15:41:55 +0800 Subject: MX53 Enable the AHCI SATA on MX53 ARD board Signed-off-by: Richard Zhu Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/board-mx53_ard.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mx5/board-mx53_ard.c b/arch/arm/mach-mx5/board-mx53_ard.c index 76a67c4a2a0..ef2039eff74 100644 --- a/arch/arm/mach-mx5/board-mx53_ard.c +++ b/arch/arm/mach-mx5/board-mx53_ard.c @@ -234,6 +234,7 @@ static void __init mx53_ard_board_init(void) imx53_add_imx_i2c(1, &mx53_ard_i2c2_data); imx53_add_imx_i2c(2, &mx53_ard_i2c3_data); imx_add_gpio_keys(&ard_button_data); + imx53_add_ahci_imx(); } static void __init mx53_ard_timer_init(void) -- cgit v1.2.3-70-g09d2 From 0661b82c94925fb47708165eaf78cf380b31ffb3 Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Wed, 28 Sep 2011 15:41:56 +0800 Subject: MX53 Enable the AHCI SATA on MX53 LOCO board Signed-off-by: Richard Zhu Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/board-mx53_loco.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c index 4e1d51d252d..940aac932fa 100644 --- a/arch/arm/mach-mx5/board-mx53_loco.c +++ b/arch/arm/mach-mx5/board-mx53_loco.c @@ -273,6 +273,7 @@ static void __init mx53_loco_board_init(void) imx53_add_sdhci_esdhc_imx(2, &mx53_loco_sd3_data); imx_add_gpio_keys(&loco_button_data); gpio_led_register_device(-1, &mx53loco_leds_data); + imx53_add_ahci_imx(); } static void __init mx53_loco_timer_init(void) -- cgit v1.2.3-70-g09d2 From d870ea1d6bc5057f2599416655b42ab192dae6d0 Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Wed, 28 Sep 2011 15:41:57 +0800 Subject: MX53 Enable the AHCI SATA on MX53 SMD board Signed-off-by: Richard Zhu Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/board-mx53_smd.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/mach-mx5/board-mx53_smd.c b/arch/arm/mach-mx5/board-mx53_smd.c index bc02894eafe..efcab68840a 100644 --- a/arch/arm/mach-mx5/board-mx53_smd.c +++ b/arch/arm/mach-mx5/board-mx53_smd.c @@ -35,6 +35,7 @@ #include "devices-imx53.h" #define SMD_FEC_PHY_RST IMX_GPIO_NR(7, 6) +#define MX53_SMD_SATA_PWR_EN IMX_GPIO_NR(3, 3) static iomux_v3_cfg_t mx53_smd_pads[] = { MX53_PAD_CSI0_DAT10__UART1_TXD_MUX, @@ -111,6 +112,19 @@ static const struct imxi2c_platform_data mx53_smd_i2c_data __initconst = { .bitrate = 100000, }; +static inline void mx53_smd_ahci_pwr_on(void) +{ + int ret; + + /* Enable SATA PWR */ + ret = gpio_request_one(MX53_SMD_SATA_PWR_EN, + GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "ahci-sata-pwr"); + if (ret) { + pr_err("failed to enable SATA_PWR_EN: %d\n", ret); + return; + } +} + static void __init mx53_smd_board_init(void) { imx53_soc_init(); @@ -125,6 +139,8 @@ static void __init mx53_smd_board_init(void) imx53_add_sdhci_esdhc_imx(0, NULL); imx53_add_sdhci_esdhc_imx(1, NULL); imx53_add_sdhci_esdhc_imx(2, NULL); + mx53_smd_ahci_pwr_on(); + imx53_add_ahci_imx(); } static void __init mx53_smd_timer_init(void) -- cgit v1.2.3-70-g09d2 From 237a62a1436eca94497476a9138baf795c16c97c Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Thu, 6 Oct 2011 17:41:33 +0200 Subject: ARM: at91: at91sam9g45: add trng clock and platform device For the new hw_random driver. Signed-off-by: Peter Korsgaard Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91sam9g45.c | 7 +++++++ arch/arm/mach-at91/at91sam9g45_devices.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c index e04c5fb6f1e..06910598819 100644 --- a/arch/arm/mach-at91/at91sam9g45.c +++ b/arch/arm/mach-at91/at91sam9g45.c @@ -53,6 +53,11 @@ static struct clk pioDE_clk = { .pmc_mask = 1 << AT91SAM9G45_ID_PIODE, .type = CLK_TYPE_PERIPHERAL, }; +static struct clk trng_clk = { + .name = "trng_clk", + .pmc_mask = 1 << AT91SAM9G45_ID_TRNG, + .type = CLK_TYPE_PERIPHERAL, +}; static struct clk usart0_clk = { .name = "usart0_clk", .pmc_mask = 1 << AT91SAM9G45_ID_US0, @@ -176,6 +181,7 @@ static struct clk *periph_clocks[] __initdata = { &pioB_clk, &pioC_clk, &pioDE_clk, + &trng_clk, &usart0_clk, &usart1_clk, &usart2_clk, @@ -215,6 +221,7 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk), CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID(NULL, "atmel-trng", &trng_clk), }; static struct clk_lookup usart_clocks_lookups[] = { diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index 600bffb01ed..ee1efa4f880 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -1094,6 +1094,34 @@ static void __init at91_add_device_rtt(void) } +/* -------------------------------------------------------------------- + * TRNG + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_HW_RANDOM_ATMEL) || defined(CONFIG_HW_RANDOM_ATMEL_MODULE) +static struct resource trng_resources[] = { + { + .start = AT91SAM9G45_BASE_TRNG, + .end = AT91SAM9G45_BASE_TRNG + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device at91sam9g45_trng_device = { + .name = "atmel-trng", + .id = -1, + .resource = trng_resources, + .num_resources = ARRAY_SIZE(trng_resources), +}; + +static void __init at91_add_device_trng(void) +{ + platform_device_register(&at91sam9g45_trng_device); +} +#else +static void __init at91_add_device_trng(void) {} +#endif + /* -------------------------------------------------------------------- * Watchdog * -------------------------------------------------------------------- */ @@ -1583,6 +1611,7 @@ static int __init at91_add_standard_devices(void) at91_add_device_hdmac(); at91_add_device_rtc(); at91_add_device_rtt(); + at91_add_device_trng(); at91_add_device_watchdog(); at91_add_device_tc(); return 0; -- cgit v1.2.3-70-g09d2 From 677d3e2f07d1b3d6d2f76fd5552d16a53b9236a0 Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Thu, 6 Oct 2011 19:56:30 +0200 Subject: hw_random: add driver for atmel true hardware random number generator For the IP block on 9g45/9g46/9m10/9m11. Signed-off-by: Peter Korsgaard Reviewed-by: Jamie Iles Acked-by: Nicolas Ferre Acked-by: Herbert Xu --- drivers/char/hw_random/Kconfig | 13 +++ drivers/char/hw_random/Makefile | 1 + drivers/char/hw_random/atmel-rng.c | 158 +++++++++++++++++++++++++++++++++++++ 3 files changed, 172 insertions(+) create mode 100644 drivers/char/hw_random/atmel-rng.c diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 1d2ebc7a494..e0135873ba9 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -60,6 +60,19 @@ config HW_RANDOM_AMD If unsure, say Y. +config HW_RANDOM_ATMEL + tristate "Atmel Random Number Generator support" + depends on HW_RANDOM && ARCH_AT91SAM9G45 + default HW_RANDOM + ---help--- + This driver provides kernel-side support for the Random Number + Generator hardware found on Atmel AT91 devices. + + To compile this driver as a module, choose M here: the + module will be called atmel-rng. + + If unsure, say Y. + config HW_RANDOM_GEODE tristate "AMD Geode HW Random Number Generator support" depends on HW_RANDOM && X86_32 && PCI diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index c88f244c8a7..b2ff5265a99 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -7,6 +7,7 @@ rng-core-y := core.o obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o +obj-$(CONFIG_HW_RANDOM_ATMEL) += atmel-rng.o obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o obj-$(CONFIG_HW_RANDOM_N2RNG) += n2-rng.o n2-rng-y := n2-drv.o n2-asm.o diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c new file mode 100644 index 00000000000..241df2e76ab --- /dev/null +++ b/drivers/char/hw_random/atmel-rng.c @@ -0,0 +1,158 @@ +/* + * Copyright (c) 2011 Peter Korsgaard + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#define TRNG_CR 0x00 +#define TRNG_ISR 0x1c +#define TRNG_ODATA 0x50 + +#define TRNG_KEY 0x524e4700 /* RNG */ + +struct atmel_trng { + struct clk *clk; + void __iomem *base; + struct hwrng rng; +}; + +static int atmel_trng_read(struct hwrng *rng, void *buf, size_t max, + bool wait) +{ + struct atmel_trng *trng = container_of(rng, struct atmel_trng, rng); + u32 *data = buf; + + /* data ready? */ + if (readl(trng->base + TRNG_ODATA) & 1) { + *data = readl(trng->base + TRNG_ODATA); + return 4; + } else + return 0; +} + +static int atmel_trng_probe(struct platform_device *pdev) +{ + struct atmel_trng *trng; + struct resource *res; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL); + if (!trng) + return -ENOMEM; + + if (!devm_request_mem_region(&pdev->dev, res->start, + resource_size(res), pdev->name)) + return -EBUSY; + + trng->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!trng->base) + return -EBUSY; + + trng->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(trng->clk)) + return PTR_ERR(trng->clk); + + ret = clk_enable(trng->clk); + if (ret) + goto err_enable; + + writel(TRNG_KEY | 1, trng->base + TRNG_CR); + trng->rng.name = pdev->name; + trng->rng.read = atmel_trng_read; + + ret = hwrng_register(&trng->rng); + if (ret) + goto err_register; + + platform_set_drvdata(pdev, trng); + + return 0; + +err_register: + clk_disable(trng->clk); +err_enable: + clk_put(trng->clk); + + return ret; +} + +static int __devexit atmel_trng_remove(struct platform_device *pdev) +{ + struct atmel_trng *trng = platform_get_drvdata(pdev); + + hwrng_unregister(&trng->rng); + + writel(TRNG_KEY, trng->base + TRNG_CR); + clk_disable(trng->clk); + clk_put(trng->clk); + + platform_set_drvdata(pdev, NULL); + + return 0; +} + +#ifdef CONFIG_PM +static int atmel_trng_suspend(struct device *dev) +{ + struct atmel_trng *trng = dev_get_drvdata(dev); + + clk_disable(trng->clk); + + return 0; +} + +static int atmel_trng_resume(struct device *dev) +{ + struct atmel_trng *trng = dev_get_drvdata(dev); + + return clk_enable(trng->clk); +} + +static const struct dev_pm_ops atmel_trng_pm_ops = { + .suspend = atmel_trng_suspend, + .resume = atmel_trng_resume, +}; +#endif /* CONFIG_PM */ + +static struct platform_driver atmel_trng_driver = { + .probe = atmel_trng_probe, + .remove = __devexit_p(atmel_trng_remove), + .driver = { + .name = "atmel-trng", + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &atmel_trng_pm_ops, +#endif /* CONFIG_PM */ + }, +}; + +static int __init atmel_trng_init(void) +{ + return platform_driver_register(&atmel_trng_driver); +} +module_init(atmel_trng_init); + +static void __exit atmel_trng_exit(void) +{ + platform_driver_unregister(&atmel_trng_driver); +} +module_exit(atmel_trng_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Peter Korsgaard "); +MODULE_DESCRIPTION("Atmel true random number generator driver"); -- cgit v1.2.3-70-g09d2