summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-at91rm9200
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-at91rm9200')
-rw-r--r--arch/arm/mach-at91rm9200/Kconfig12
-rw-r--r--arch/arm/mach-at91rm9200/Makefile17
-rw-r--r--arch/arm/mach-at91rm9200/board-carmeva.c131
-rw-r--r--arch/arm/mach-at91rm9200/board-csb337.c43
-rw-r--r--arch/arm/mach-at91rm9200/board-csb637.c30
-rw-r--r--arch/arm/mach-at91rm9200/board-dk.c57
-rw-r--r--arch/arm/mach-at91rm9200/board-eb9200.c130
-rw-r--r--arch/arm/mach-at91rm9200/board-ek.c47
-rw-r--r--arch/arm/mach-at91rm9200/board-kafa.c116
-rw-r--r--arch/arm/mach-at91rm9200/board-kb9202.c125
-rw-r--r--arch/arm/mach-at91rm9200/clock.c5
-rw-r--r--arch/arm/mach-at91rm9200/common.c17
-rw-r--r--arch/arm/mach-at91rm9200/devices.c406
-rw-r--r--arch/arm/mach-at91rm9200/generic.h7
-rw-r--r--arch/arm/mach-at91rm9200/gpio.c87
-rw-r--r--arch/arm/mach-at91rm9200/irq.c44
-rw-r--r--arch/arm/mach-at91rm9200/pm.c225
-rw-r--r--arch/arm/mach-at91rm9200/time.c57
18 files changed, 1426 insertions, 130 deletions
diff --git a/arch/arm/mach-at91rm9200/Kconfig b/arch/arm/mach-at91rm9200/Kconfig
index 4b7218fc3eb..1ab5b782831 100644
--- a/arch/arm/mach-at91rm9200/Kconfig
+++ b/arch/arm/mach-at91rm9200/Kconfig
@@ -40,6 +40,18 @@ config MACH_KB9200
help
Select this if you are using KwikByte's KB920x board
+config MACH_ATEB9200
+ bool "Embest's ATEB9200"
+ depends on ARCH_AT91RM9200
+ help
+ Select this if you are using Embest's ATEB9200 board
+
+config MACH_KAFA
+ bool "Sperry-Sun KAFA board"
+ depends on ARCH_AT91RM9200
+ help
+ Select this if you are using Sperry-Sun's KAFA board
+
comment "AT91RM9200 Feature Selections"
diff --git a/arch/arm/mach-at91rm9200/Makefile b/arch/arm/mach-at91rm9200/Makefile
index ef88c4128ed..81ebc6684ad 100644
--- a/arch/arm/mach-at91rm9200/Makefile
+++ b/arch/arm/mach-at91rm9200/Makefile
@@ -7,22 +7,31 @@ obj-m :=
obj-n :=
obj- :=
+obj-$(CONFIG_PM) += pm.o
+
# Board-specific support
obj-$(CONFIG_ARCH_AT91RM9200DK) += board-dk.o
obj-$(CONFIG_MACH_AT91RM9200EK) += board-ek.o
obj-$(CONFIG_MACH_CSB337) += board-csb337.o
obj-$(CONFIG_MACH_CSB637) += board-csb637.o
-#obj-$(CONFIG_MACH_CARMEVA) += board-carmeva.o
-#obj-$(CONFIG_MACH_KB9200) += board-kb9202.o
+obj-$(CONFIG_MACH_CARMEVA) += board-carmeva.o
+obj-$(CONFIG_MACH_KB9200) += board-kb9202.o
+obj-$(CONFIG_MACH_ATEB9200) += board-eb9200.o
+obj-$(CONFIG_MACH_KAFA) += board-kafa.o
# LEDs support
led-$(CONFIG_ARCH_AT91RM9200DK) += leds.o
led-$(CONFIG_MACH_AT91RM9200EK) += leds.o
led-$(CONFIG_MACH_CSB337) += leds.o
led-$(CONFIG_MACH_CSB637) += leds.o
-#led-$(CONFIG_MACH_KB9200) += leds.o
-#led-$(CONFIG_MACH_KAFA) += leds.o
+led-$(CONFIG_MACH_KB9200) += leds.o
+led-$(CONFIG_MACH_KAFA) += leds.o
obj-$(CONFIG_LEDS) += $(led-y)
# VGA support
#obj-$(CONFIG_FB_S1D13XXX) += ics1523.o
+
+
+ifeq ($(CONFIG_PM_DEBUG),y)
+CFLAGS_pm.o += -DDEBUG
+endif
diff --git a/arch/arm/mach-at91rm9200/board-carmeva.c b/arch/arm/mach-at91rm9200/board-carmeva.c
new file mode 100644
index 00000000000..9183cb75ccd
--- /dev/null
+++ b/arch/arm/mach-at91rm9200/board-carmeva.c
@@ -0,0 +1,131 @@
+/*
+ * linux/arch/arm/mach-at91rm9200/board-carmeva.c
+ *
+ * Copyright (c) 2005 Peer Georgi
+ * Conitec Datasystems
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "generic.h"
+
+static void __init carmeva_init_irq(void)
+{
+ /* Initialize AIC controller */
+ at91rm9200_init_irq(NULL);
+
+ /* Set up the GPIO interrupts */
+ at91_gpio_irq_setup(BGA_GPIO_BANKS);
+}
+
+/*
+ * Serial port configuration.
+ * 0 .. 3 = USART0 .. USART3
+ * 4 = DBGU
+ */
+static struct at91_uart_config __initdata carmeva_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
+
+static void __init carmeva_map_io(void)
+{
+ at91rm9200_map_io();
+
+ /* Initialize clocks: 20.000 MHz crystal */
+ at91_clock_init(20000000);
+
+ /* Setup the serial ports and console */
+ at91_init_serial(&carmeva_uart_config);
+}
+
+static struct at91_eth_data __initdata carmeva_eth_data = {
+ .phy_irq_pin = AT91_PIN_PC4,
+ .is_rmii = 1,
+};
+
+static struct at91_usbh_data __initdata carmeva_usbh_data = {
+ .ports = 2,
+};
+
+static struct at91_udc_data __initdata carmeva_udc_data = {
+ .vbus_pin = AT91_PIN_PD12,
+ .pullup_pin = AT91_PIN_PD9,
+};
+
+/* FIXME: user dependend */
+// static struct at91_cf_data __initdata carmeva_cf_data = {
+// .det_pin = AT91_PIN_PB0,
+// .rst_pin = AT91_PIN_PC5,
+ // .irq_pin = ... not connected
+ // .vcc_pin = ... always powered
+// };
+
+static struct at91_mmc_data __initdata carmeva_mmc_data = {
+ .is_b = 0,
+ .wire4 = 1,
+};
+
+static void __init carmeva_board_init(void)
+{
+ /* Serial */
+ at91_add_device_serial();
+ /* Ethernet */
+ at91_add_device_eth(&carmeva_eth_data);
+ /* USB Host */
+ at91_add_device_usbh(&carmeva_usbh_data);
+ /* USB Device */
+ at91_add_device_udc(&carmeva_udc_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* Compact Flash */
+// at91_add_device_cf(&carmeva_cf_data);
+ /* SPI */
+// at91_add_device_spi(NULL, 0);
+ /* MMC */
+ at91_add_device_mmc(&carmeva_mmc_data);
+}
+
+MACHINE_START(CARMEVA, "Carmeva")
+ /* Maintainer: Conitec Datasystems */
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91rm9200_timer,
+ .map_io = carmeva_map_io,
+ .init_irq = carmeva_init_irq,
+ .init_machine = carmeva_board_init,
+MACHINE_END
diff --git a/arch/arm/mach-at91rm9200/board-csb337.c b/arch/arm/mach-at91rm9200/board-csb337.c
index f45104ceea8..3b9de181ae3 100644
--- a/arch/arm/mach-at91rm9200/board-csb337.c
+++ b/arch/arm/mach-at91rm9200/board-csb337.c
@@ -24,6 +24,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
#include <asm/hardware.h>
#include <asm/setup.h>
@@ -35,8 +36,8 @@
#include <asm/mach/irq.h>
#include <asm/arch/hardware.h>
-#include <asm/mach/serial_at91rm9200.h>
#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
#include "generic.h"
@@ -54,32 +55,24 @@ static void __init csb337_init_irq(void)
* 0 .. 3 = USART0 .. USART3
* 4 = DBGU
*/
-#define CSB337_UART_MAP { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
-#define CSB337_SERIAL_CONSOLE 0 /* ttyS0 */
+static struct at91_uart_config __initdata csb337_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
static void __init csb337_map_io(void)
{
- int serial[AT91_NR_UART] = CSB337_UART_MAP;
- int i;
-
at91rm9200_map_io();
/* Initialize clocks: 3.6864 MHz crystal */
at91_clock_init(3686400);
/* Setup the LEDs */
- at91_init_leds(AT91_PIN_PB2, AT91_PIN_PB2);
-
-#ifdef CONFIG_SERIAL_AT91
- at91_console_port = CSB337_SERIAL_CONSOLE;
- memcpy(at91_serial_map, serial, sizeof(serial));
-
- /* Register UARTs */
- for (i = 0; i < AT91_NR_UART; i++) {
- if (serial[i] >= 0)
- at91_register_uart(i, serial[i]);
- }
-#endif
+ at91_init_leds(AT91_PIN_PB0, AT91_PIN_PB1);
+
+ /* Setup the serial ports and console */
+ at91_init_serial(&csb337_uart_config);
}
static struct at91_eth_data __initdata csb337_eth_data = {
@@ -118,17 +111,31 @@ static struct at91_mmc_data __initdata csb337_mmc_data = {
.wp_pin = AT91_PIN_PD6,
};
+static struct spi_board_info csb337_spi_devices[] = {
+ { /* CAN controller */
+ .modalias = "sak82c900",
+ .chip_select = 0,
+ .max_speed_hz = 6 * 1000 * 1000,
+ },
+};
+
static void __init csb337_board_init(void)
{
+ /* Serial */
+ at91_add_device_serial();
/* Ethernet */
at91_add_device_eth(&csb337_eth_data);
/* USB Host */
at91_add_device_usbh(&csb337_usbh_data);
/* USB Device */
at91_add_device_udc(&csb337_udc_data);
+ /* I2C */
+ at91_add_device_i2c();
/* Compact Flash */
at91_set_gpio_input(AT91_PIN_PB22, 1); /* IOIS16 */
at91_add_device_cf(&csb337_cf_data);
+ /* SPI */
+ at91_add_device_spi(csb337_spi_devices, ARRAY_SIZE(csb337_spi_devices));
/* MMC */
at91_add_device_mmc(&csb337_mmc_data);
}
diff --git a/arch/arm/mach-at91rm9200/board-csb637.c b/arch/arm/mach-at91rm9200/board-csb637.c
index f2c2d6e79bc..2c4470d110d 100644
--- a/arch/arm/mach-at91rm9200/board-csb637.c
+++ b/arch/arm/mach-at91rm9200/board-csb637.c
@@ -35,8 +35,8 @@
#include <asm/mach/irq.h>
#include <asm/arch/hardware.h>
-#include <asm/mach/serial_at91rm9200.h>
#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
#include "generic.h"
@@ -54,14 +54,14 @@ static void __init csb637_init_irq(void)
* 0 .. 3 = USART0 .. USART3
* 4 = DBGU
*/
-#define CSB637_UART_MAP { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
-#define CSB637_SERIAL_CONSOLE 0 /* ttyS0 */
+static struct at91_uart_config __initdata csb637_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
static void __init csb637_map_io(void)
{
- int serial[AT91_NR_UART] = CSB637_UART_MAP;
- int i;
-
at91rm9200_map_io();
/* Initialize clocks: 3.6864 MHz crystal */
@@ -70,16 +70,8 @@ static void __init csb637_map_io(void)
/* Setup the LEDs */
at91_init_leds(AT91_PIN_PB2, AT91_PIN_PB2);
-#ifdef CONFIG_SERIAL_AT91
- at91_console_port = CSB637_SERIAL_CONSOLE;
- memcpy(at91_serial_map, serial, sizeof(serial));
-
- /* Register UARTs */
- for (i = 0; i < AT91_NR_UART; i++) {
- if (serial[i] >= 0)
- at91_register_uart(i, serial[i]);
- }
-#endif
+ /* Setup the serial ports and console */
+ at91_init_serial(&csb637_uart_config);
}
static struct at91_eth_data __initdata csb637_eth_data = {
@@ -98,12 +90,18 @@ static struct at91_udc_data __initdata csb637_udc_data = {
static void __init csb637_board_init(void)
{
+ /* Serial */
+ at91_add_device_serial();
/* Ethernet */
at91_add_device_eth(&csb637_eth_data);
/* USB Host */
at91_add_device_usbh(&csb637_usbh_data);
/* USB Device */
at91_add_device_udc(&csb637_udc_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* SPI */
+ at91_add_device_spi(NULL, 0);
}
MACHINE_START(CSB637, "Cogent CSB637")
diff --git a/arch/arm/mach-at91rm9200/board-dk.c b/arch/arm/mach-at91rm9200/board-dk.c
index 2d7200ed66e..eb02ca95be7 100644
--- a/arch/arm/mach-at91rm9200/board-dk.c
+++ b/arch/arm/mach-at91rm9200/board-dk.c
@@ -27,6 +27,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
#include <asm/hardware.h>
#include <asm/setup.h>
@@ -38,8 +39,8 @@
#include <asm/mach/irq.h>
#include <asm/arch/hardware.h>
-#include <asm/mach/serial_at91rm9200.h>
#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
#include "generic.h"
@@ -57,14 +58,14 @@ static void __init dk_init_irq(void)
* 0 .. 3 = USART0 .. USART3
* 4 = DBGU
*/
-#define DK_UART_MAP { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
-#define DK_SERIAL_CONSOLE 0 /* ttyS0 */
+static struct at91_uart_config __initdata dk_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
static void __init dk_map_io(void)
{
- int serial[AT91_NR_UART] = DK_UART_MAP;
- int i;
-
at91rm9200_map_io();
/* Initialize clocks: 18.432 MHz crystal */
@@ -73,16 +74,8 @@ static void __init dk_map_io(void)
/* Setup the LEDs */
at91_init_leds(AT91_PIN_PB2, AT91_PIN_PB2);
-#ifdef CONFIG_SERIAL_AT91
- at91_console_port = DK_SERIAL_CONSOLE;
- memcpy(at91_serial_map, serial, sizeof(serial));
-
- /* Register UARTs */
- for (i = 0; i < AT91_NR_UART; i++) {
- if (at91_serial_map[i] >= 0)
- at91_register_uart(i, at91_serial_map[i]);
- }
-#endif
+ /* Setup the serial ports and console */
+ at91_init_serial(&dk_uart_config);
}
static struct at91_eth_data __initdata dk_eth_data = {
@@ -111,16 +104,48 @@ static struct at91_mmc_data __initdata dk_mmc_data = {
.wire4 = 1,
};
+static struct spi_board_info dk_spi_devices[] = {
+ { /* DataFlash chip */
+ .modalias = "mtd_dataflash",
+ .chip_select = 0,
+ .max_speed_hz = 15 * 1000 * 1000,
+ },
+ { /* UR6HCPS2-SP40 PS2-to-SPI adapter */
+ .modalias = "ur6hcps2",
+ .chip_select = 1,
+ .max_speed_hz = 250 * 1000,
+ },
+ { /* TLV1504 ADC, 4 channels, 10 bits; one is a temp sensor */
+ .modalias = "tlv1504",
+ .chip_select = 2,
+ .max_speed_hz = 20 * 1000 * 1000,
+ },
+#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
+ { /* DataFlash card */
+ .modalias = "mtd_dataflash",
+ .chip_select = 3,
+ .max_speed_hz = 15 * 1000 * 1000,
+ }
+#endif
+};
+
static void __init dk_board_init(void)
{
+ /* Serial */
+ at91_add_device_serial();
/* Ethernet */
at91_add_device_eth(&dk_eth_data);
/* USB Host */
at91_add_device_usbh(&dk_usbh_data);
/* USB Device */
at91_add_device_udc(&dk_udc_data);
+ at91_set_multi_drive(dk_udc_data.pullup_pin, 1); /* pullup_pin is connected to reset */
/* Compact Flash */
at91_add_device_cf(&dk_cf_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* SPI */
+ at91_add_device_spi(dk_spi_devices, ARRAY_SIZE(dk_spi_devices));
#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
/* DataFlash card */
at91_set_gpio_output(AT91_PIN_PB7, 0);
diff --git a/arch/arm/mach-at91rm9200/board-eb9200.c b/arch/arm/mach-at91rm9200/board-eb9200.c
new file mode 100644
index 00000000000..c7e4546a262
--- /dev/null
+++ b/arch/arm/mach-at91rm9200/board-eb9200.c
@@ -0,0 +1,130 @@
+/*
+ * linux/arch/arm/mach-at91rm9200/board-eb9200.c
+ *
+ * Copyright (C) 2005 SAN People, adapted for ATEB9200 from Embest
+ * by Andrew Patrikalakis
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/device.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "generic.h"
+
+static void __init eb9200_init_irq(void)
+{
+ /* Initialize AIC controller */
+ at91rm9200_init_irq(NULL);
+
+ /* Set up the GPIO interrupts */
+ at91_gpio_irq_setup(BGA_GPIO_BANKS);
+}
+
+/*
+ * Serial port configuration.
+ * 0 .. 3 = USART0 .. USART3
+ * 4 = DBGU
+ */
+static struct at91_uart_config __initdata eb9200_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
+
+static void __init eb9200_map_io(void)
+{
+ at91rm9200_map_io();
+
+ /* Initialize clocks: 18.432 MHz crystal */
+ at91_clock_init(18432000);
+
+ /* Setup the serial ports and console */
+ at91_init_serial(&eb9200_uart_config);
+}
+
+static struct at91_eth_data __initdata eb9200_eth_data = {
+ .phy_irq_pin = AT91_PIN_PC4,
+ .is_rmii = 1,
+};
+
+static struct at91_usbh_data __initdata eb9200_usbh_data = {
+ .ports = 2,
+};
+
+static struct at91_udc_data __initdata eb9200_udc_data = {
+ .vbus_pin = AT91_PIN_PD4,
+ .pullup_pin = AT91_PIN_PD5,
+};
+
+static struct at91_cf_data __initdata eb9200_cf_data = {
+ .det_pin = AT91_PIN_PB0,
+ .rst_pin = AT91_PIN_PC5,
+ // .irq_pin = ... not connected
+ // .vcc_pin = ... always powered
+};
+
+static struct at91_mmc_data __initdata eb9200_mmc_data = {
+ .is_b = 0,
+ .wire4 = 1,
+};
+
+static void __init eb9200_board_init(void)
+{
+ /* Serial */
+ at91_add_device_serial();
+ /* Ethernet */
+ at91_add_device_eth(&eb9200_eth_data);
+ /* USB Host */
+ at91_add_device_usbh(&eb9200_usbh_data);
+ /* USB Device */
+ at91_add_device_udc(&eb9200_udc_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* Compact Flash */
+ at91_add_device_cf(&eb9200_cf_data);
+ /* SPI */
+ at91_add_device_spi(NULL, 0);
+ /* MMC */
+ /* only supports 1 or 4 bit interface, not wired through to SPI */
+ at91_add_device_mmc(&eb9200_mmc_data);
+}
+
+MACHINE_START(ATEB9200, "Embest ATEB9200")
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91rm9200_timer,
+ .map_io = eb9200_map_io,
+ .init_irq = eb9200_init_irq,
+ .init_machine = eb9200_board_init,
+MACHINE_END
diff --git a/arch/arm/mach-at91rm9200/board-ek.c b/arch/arm/mach-at91rm9200/board-ek.c
index 80d90f5135a..4d7468e4267 100644
--- a/arch/arm/mach-at91rm9200/board-ek.c
+++ b/arch/arm/mach-at91rm9200/board-ek.c
@@ -27,6 +27,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
#include <asm/hardware.h>
#include <asm/setup.h>
@@ -38,8 +39,8 @@
#include <asm/mach/irq.h>
#include <asm/arch/hardware.h>
-#include <asm/mach/serial_at91rm9200.h>
#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
#include "generic.h"
@@ -57,14 +58,14 @@ static void __init ek_init_irq(void)
* 0 .. 3 = USART0 .. USART3
* 4 = DBGU
*/
-#define EK_UART_MAP { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
-#define EK_SERIAL_CONSOLE 0 /* ttyS0 */
+static struct at91_uart_config __initdata ek_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
static void __init ek_map_io(void)
{
- int serial[AT91_NR_UART] = EK_UART_MAP;
- int i;
-
at91rm9200_map_io();
/* Initialize clocks: 18.432 MHz crystal */
@@ -73,16 +74,8 @@ static void __init ek_map_io(void)
/* Setup the LEDs */
at91_init_leds(AT91_PIN_PB1, AT91_PIN_PB2);
-#ifdef CONFIG_SERIAL_AT91
- at91_console_port = EK_SERIAL_CONSOLE;
- memcpy(at91_serial_map, serial, sizeof(serial));
-
- /* Register UARTs */
- for (i = 0; i < AT91_NR_UART; i++) {
- if (serial[i] >= 0)
- at91_register_uart(i, serial[i]);
- }
-#endif
+ /* Setup the serial ports and console */
+ at91_init_serial(&ek_uart_config);
}
static struct at91_eth_data __initdata ek_eth_data = {
@@ -106,14 +99,36 @@ static struct at91_mmc_data __initdata ek_mmc_data = {
.wp_pin = AT91_PIN_PA17,
};
+static struct spi_board_info ek_spi_devices[] = {
+ { /* DataFlash chip */
+ .modalias = "mtd_dataflash",
+ .chip_select = 0,
+ .max_speed_hz = 15 * 1000 * 1000,
+ },
+#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
+ { /* DataFlash card */
+ .modalias = "mtd_dataflash",
+ .chip_select = 3,
+ .max_speed_hz = 15 * 1000 * 1000,
+ },
+#endif
+};
+
static void __init ek_board_init(void)
{
+ /* Serial */
+ at91_add_device_serial();
/* Ethernet */
at91_add_device_eth(&ek_eth_data);
/* USB Host */
at91_add_device_usbh(&ek_usbh_data);
/* USB Device */
at91_add_device_udc(&ek_udc_data);
+ at91_set_multi_drive(ek_udc_data.pullup_pin, 1); /* pullup_pin is connected to reset */
+ /* I2C */
+ at91_add_device_i2c();
+ /* SPI */
+ at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
/* DataFlash card */
at91_set_gpio_output(AT91_PIN_PB22, 0);
diff --git a/arch/arm/mach-at91rm9200/board-kafa.c b/arch/arm/mach-at91rm9200/board-kafa.c
new file mode 100644
index 00000000000..35d459fdfcf
--- /dev/null
+++ b/arch/arm/mach-at91rm9200/board-kafa.c
@@ -0,0 +1,116 @@
+/*
+ * linux/arch/arm/mach-at91rm9200/board-kafa.c
+ *
+ * Copyright (C) 2006 Sperry-Sun
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "generic.h"
+
+static void __init kafa_init_irq(void)
+{
+ /* Initialize AIC controller */
+ at91rm9200_init_irq(NULL);
+
+ /* Set up the GPIO interrupts */
+ at91_gpio_irq_setup(PQFP_GPIO_BANKS);
+}
+
+/*
+ * Serial port configuration.
+ * 0 .. 3 = USART0 .. USART3
+ * 4 = DBGU
+ */
+static struct at91_uart_config __initdata kafa_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 2,
+ .tty_map = { 4, 0, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
+
+static void __init kafa_map_io(void)
+{
+ at91rm9200_map_io();
+
+ /* Initialize clocks: 18.432 MHz crystal */
+ at91_clock_init(18432000);
+
+ /* Set up the LEDs */
+ at91_init_leds(AT91_PIN_PB4, AT91_PIN_PB4);
+
+ /* Setup the serial ports and console */
+ at91_init_serial(&kafa_uart_config);
+}
+
+static struct at91_eth_data __initdata kafa_eth_data = {
+ .phy_irq_pin = AT91_PIN_PC4,
+ .is_rmii = 0,
+};
+
+static struct at91_usbh_data __initdata kafa_usbh_data = {
+ .ports = 1,
+};
+
+static struct at91_udc_data __initdata kafa_udc_data = {
+ .vbus_pin = AT91_PIN_PB6,
+ .pullup_pin = AT91_PIN_PB7,
+};
+
+static void __init kafa_board_init(void)
+{
+ /* Serial */
+ at91_add_device_serial();
+ /* Ethernet */
+ at91_add_device_eth(&kafa_eth_data);
+ /* USB Host */
+ at91_add_device_usbh(&kafa_usbh_data);
+ /* USB Device */
+ at91_add_device_udc(&kafa_udc_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* SPI */
+ at91_add_device_spi(NULL, 0);
+}
+
+MACHINE_START(KAFA, "Sperry-Sun KAFA")
+ /* Maintainer: Sergei Sharonov */
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91rm9200_timer,
+ .map_io = kafa_map_io,
+ .init_irq = kafa_init_irq,
+ .init_machine = kafa_board_init,
+MACHINE_END
diff --git a/arch/arm/mach-at91rm9200/board-kb9202.c b/arch/arm/mach-at91rm9200/board-kb9202.c
new file mode 100644
index 00000000000..6ba65ef4880
--- /dev/null
+++ b/arch/arm/mach-at91rm9200/board-kb9202.c
@@ -0,0 +1,125 @@
+/*
+ * linux/arch/arm/mach-at91rm9200/board-kb9202.c
+ *
+ * Copyright (c) 2005 kb_admin
+ * KwikByte, Inc.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "generic.h"
+
+static void __init kb9202_init_irq(void)
+{
+ /* Initialize AIC controller */
+ at91rm9200_init_irq(NULL);
+
+ /* Set up the GPIO interrupts */
+ at91_gpio_irq_setup(PQFP_GPIO_BANKS);
+}
+
+/*
+ * Serial port configuration.
+ * 0 .. 3 = USART0 .. USART3
+ * 4 = DBGU
+ */
+static struct at91_uart_config __initdata kb9202_uart_config = {
+ .console_tty = 0, /* ttyS0 */
+ .nr_tty = 3,
+ .tty_map = { 4, 0, 1, -1, -1 } /* ttyS0, ..., ttyS4 */
+};
+
+static void __init kb9202_map_io(void)
+{
+ at91rm9200_map_io();
+
+ /* Initialize clocks: 10 MHz crystal */
+ at91_clock_init(10000000);
+
+ /* Set up the LEDs */
+ at91_init_leds(AT91_PIN_PC19, AT91_PIN_PC18);
+
+ /* Setup the serial ports and console */
+ at91_init_serial(&kb9202_uart_config);
+}
+
+static struct at91_eth_data __initdata kb9202_eth_data = {
+ .phy_irq_pin = AT91_PIN_PB29,
+ .is_rmii = 0,
+};
+
+static struct at91_usbh_data __initdata kb9202_usbh_data = {
+ .ports = 1,
+};
+
+static struct at91_udc_data __initdata kb9202_udc_data = {
+ .vbus_pin = AT91_PIN_PB24,
+ .pullup_pin = AT91_PIN_PB22,
+};
+
+static struct at91_mmc_data __initdata kb9202_mmc_data = {
+ .det_pin = AT91_PIN_PB2,
+ .is_b = 0,
+ .wire4 = 1,
+};
+
+static void __init kb9202_board_init(void)
+{
+ /* Serial */
+ at91_add_device_serial();
+ /* Ethernet */
+ at91_add_device_eth(&kb9202_eth_data);
+ /* USB Host */
+ at91_add_device_usbh(&kb9202_usbh_data);
+ /* USB Device */
+ at91_add_device_udc(&kb9202_udc_data);
+ /* MMC */
+ at91_add_device_mmc(&kb9202_mmc_data);
+ /* I2C */
+ at91_add_device_i2c();
+ /* SPI */
+ at91_add_device_spi(NULL, 0);
+}
+
+MACHINE_START(KB9200, "KB920x")
+ /* Maintainer: KwikByte, Inc. */
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91rm9200_timer,
+ .map_io = kb9202_map_io,
+ .init_irq = kb9202_init_irq,
+ .init_machine = kb9202_board_init,
+MACHINE_END
diff --git a/arch/arm/mach-at91rm9200/clock.c b/arch/arm/mach-at91rm9200/clock.c
index 30042d2bac5..fe71b834899 100644
--- a/arch/arm/mach-at91rm9200/clock.c
+++ b/arch/arm/mach-at91rm9200/clock.c
@@ -28,10 +28,10 @@
#include <asm/mach-types.h>
#include <asm/arch/hardware.h>
-#include <asm/arch/board.h> /* for master clock global */
#include "generic.h"
+
/*
* There's a lot more which can be done with clocks, including cpufreq
* integration, slow clock mode support (for system suspend), letting
@@ -722,9 +722,6 @@ int __init at91_clock_init(unsigned long main_clock)
(unsigned) main_clock / 1000000,
((unsigned) main_clock % 1000000) / 1000);
- /* FIXME get rid of master_clock global */
- at91_master_clock = mck.rate_hz;
-
#ifdef CONFIG_AT91_PROGRAMMABLE_CLOCKS
/* establish PCK0..PCK3 parentage */
for (tmp = 0; tmp < ARRAY_SIZE(clock_list); tmp++) {
diff --git a/arch/arm/mach-at91rm9200/common.c b/arch/arm/mach-at91rm9200/common.c
index 3848fd2d559..1da68966e77 100644
--- a/arch/arm/mach-at91rm9200/common.c
+++ b/arch/arm/mach-at91rm9200/common.c
@@ -17,6 +17,7 @@
#include <asm/mach/map.h>
#include <asm/arch/hardware.h>
+#include "generic.h"
static struct map_desc at91rm9200_io_desc[] __initdata = {
{
@@ -94,6 +95,11 @@ static struct map_desc at91rm9200_io_desc[] __initdata = {
.pfn = __phys_to_pfn(AT91_BASE_TCB0),
.length = SZ_16K,
.type = MT_DEVICE,
+ }, {
+ .virtual = AT91_SRAM_VIRT_BASE,
+ .pfn = __phys_to_pfn(AT91_SRAM_BASE),
+ .length = AT91_SRAM_SIZE,
+ .type = MT_DEVICE,
},
};
@@ -102,14 +108,3 @@ void __init at91rm9200_map_io(void)
iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
}
-
-unsigned long at91_master_clock;
-
-EXPORT_SYMBOL(at91_master_clock);
-
-
-int at91_serial_map[AT91_NR_UART];
-int at91_console_port;
-
-EXPORT_SYMBOL(at91_serial_map);
-EXPORT_SYMBOL(at91_console_port);
diff --git a/arch/arm/mach-at91rm9200/devices.c b/arch/arm/mach-at91rm9200/devices.c
index bfe47bd6e50..bf753e306a3 100644
--- a/arch/arm/mach-at91rm9200/devices.c
+++ b/arch/arm/mach-at91rm9200/devices.c
@@ -16,9 +16,15 @@
#include <linux/config.h>
#include <linux/platform_device.h>
+#include <asm/arch/hardware.h>
#include <asm/arch/board.h>
-#include <asm/arch/pio.h>
+#include <asm/arch/gpio.h>
+#include "generic.h"
+
+#define SZ_512 0x00000200
+#define SZ_256 0x00000100
+#define SZ_16 0x00000010
/* --------------------------------------------------------------------
* USB Host
@@ -28,7 +34,7 @@
static u64 ohci_dmamask = 0xffffffffUL;
static struct at91_usbh_data usbh_data;
-static struct resource at91_usbh_resource[] = {
+static struct resource at91_usbh_resources[] = {
[0] = {
.start = AT91_UHP_BASE,
.end = AT91_UHP_BASE + SZ_1M - 1,
@@ -42,15 +48,15 @@ static struct resource at91_usbh_resource[] = {
};
static struct platform_device at91rm9200_usbh_device = {
- .name = "at91rm9200-ohci",
+ .name = "at91_ohci",
.id = -1,
.dev = {
.dma_mask = &ohci_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &usbh_data,
},
- .resource = at91_usbh_resource,
- .num_resources = ARRAY_SIZE(at91_usbh_resource),
+ .resource = at91_usbh_resources,
+ .num_resources = ARRAY_SIZE(at91_usbh_resources),
};
void __init at91_add_device_usbh(struct at91_usbh_data *data)
@@ -74,11 +80,16 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
static struct at91_udc_data udc_data;
static struct resource at91_udc_resources[] = {
- {
+ [0] = {
.start = AT91_BASE_UDP,
.end = AT91_BASE_UDP + SZ_16K - 1,
.flags = IORESOURCE_MEM,
- }
+ },
+ [1] = {
+ .start = AT91_ID_UDP,
+ .end = AT91_ID_UDP,
+ .flags = IORESOURCE_IRQ,
+ },
};
static struct platform_device at91rm9200_udc_device = {
@@ -100,10 +111,8 @@ void __init at91_add_device_udc(struct at91_udc_data *data)
at91_set_gpio_input(data->vbus_pin, 0);
at91_set_deglitch(data->vbus_pin, 1);
}
- if (data->pullup_pin) {
+ if (data->pullup_pin)
at91_set_gpio_output(data->pullup_pin, 0);
- at91_set_multi_drive(data->pullup_pin, 1);
- }
udc_data = *data;
platform_device_register(&at91rm9200_udc_device);
@@ -197,7 +206,7 @@ static struct at91_cf_data cf_data;
static struct resource at91_cf_resources[] = {
[0] = {
.start = AT91_CF_BASE,
- /* ties up CS4, CS5, and CS6 */
+ /* ties up CS4, CS5 and CS6 */
.end = AT91_CF_BASE + (0x30000000 - 1),
.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
},
@@ -231,6 +240,12 @@ void __init at91_add_device_cf(struct at91_cf_data *data)
at91_set_gpio_output(data->vcc_pin, 0);
at91_set_gpio_output(data->rst_pin, 0);
+ /* force poweron defaults for these pins ... */
+ at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
+ at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
+ at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
+ at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
+
cf_data = *data;
platform_device_register(&at91rm9200_cf_device);
}
@@ -319,6 +334,7 @@ void __init at91_add_device_mmc(struct at91_mmc_data *data)
void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
#endif
+
/* --------------------------------------------------------------------
* NAND / SmartMedia
* -------------------------------------------------------------------- */
@@ -400,22 +416,110 @@ void __init at91_add_device_i2c(void) {}
/* --------------------------------------------------------------------
+ * SPI
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
+static u64 spi_dmamask = 0xffffffffUL;
+
+static struct resource at91_spi_resources[] = {
+ [0] = {
+ .start = AT91_BASE_SPI,
+ .end = AT91_BASE_SPI + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_SPI,
+ .end = AT91_ID_SPI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91rm9200_spi_device = {
+ .name = "at91_spi",
+ .id = 0,
+ .dev = {
+ .dma_mask = &spi_dmamask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = at91_spi_resources,
+ .num_resources = ARRAY_SIZE(at91_spi_resources),
+};
+
+static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
+
+void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
+{
+ int i;
+ unsigned long cs_pin;
+
+ at91_set_A_periph(AT91_PIN_PA0, 0); /* MISO */
+ at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
+ at91_set_A_periph(AT91_PIN_PA2, 0); /* SPCK */
+
+ /* Enable SPI chip-selects */
+ for (i = 0; i < nr_devices; i++) {
+ if (devices[i].controller_data)
+ cs_pin = (unsigned long) devices[i].controller_data;
+ else
+ cs_pin = at91_spi_standard_cs[devices[i].chip_select];
+
+#ifdef CONFIG_SPI_AT91_MANUAL_CS
+ at91_set_gpio_output(cs_pin, 1);
+#else
+ at91_set_A_periph(cs_pin, 0);
+#endif
+
+ /* pass chip-select pin to driver */
+ devices[i].controller_data = (void *) cs_pin;
+ }
+
+ spi_register_board_info(devices, nr_devices);
+ at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
+ platform_device_register(&at91rm9200_spi_device);
+}
+#else
+void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
+#endif
+
+
+/* --------------------------------------------------------------------
* RTC
* -------------------------------------------------------------------- */
-#if defined(CONFIG_AT91_RTC) || defined(CONFIG_AT91_RTC_MODULE)
+#if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
static struct platform_device at91rm9200_rtc_device = {
.name = "at91_rtc",
.id = -1,
.num_resources = 0,
};
-void __init at91_add_device_rtc(void)
+static void __init at91_add_device_rtc(void)
{
platform_device_register(&at91rm9200_rtc_device);
}
#else
-void __init at91_add_device_rtc(void) {}
+static void __init at91_add_device_rtc(void) {}
+#endif
+
+
+/* --------------------------------------------------------------------
+ * Watchdog
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
+static struct platform_device at91rm9200_wdt_device = {
+ .name = "at91_wdt",
+ .id = -1,
+ .num_resources = 0,
+};
+
+static void __init at91_add_device_watchdog(void)
+{
+ platform_device_register(&at91rm9200_wdt_device);
+}
+#else
+static void __init at91_add_device_watchdog(void) {}
#endif
@@ -429,13 +533,281 @@ u8 at91_leds_timer;
void __init at91_init_leds(u8 cpu_led, u8 timer_led)
{
- at91_leds_cpu = cpu_led;
- at91_leds_timer = timer_led;
+ at91_leds_cpu = cpu_led;
+ at91_leds_timer = timer_led;
}
-
#else
void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
#endif
+/* --------------------------------------------------------------------
+ * UART
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_SERIAL_AT91)
+static struct resource dbgu_resources[] = {
+ [0] = {
+ .start = AT91_VA_BASE_SYS + AT91_DBGU,
+ .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_SYS,
+ .end = AT91_ID_SYS,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct at91_uart_data dbgu_data = {
+ .use_dma_tx = 0,
+ .use_dma_rx = 0, /* DBGU not capable of receive DMA */
+};
+
+static struct platform_device at91rm9200_dbgu_device = {
+ .name = "at91_usart",
+ .id = 0,
+ .dev = {
+ .platform_data = &dbgu_data,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = dbgu_resources,
+ .num_resources = ARRAY_SIZE(dbgu_resources),
+};
+
+static inline void configure_dbgu_pins(void)
+{
+ at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
+ at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
+}
+
+static struct resource uart0_resources[] = {
+ [0] = {
+ .start = AT91_BASE_US0,
+ .end = AT91_BASE_US0 + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_US0,
+ .end = AT91_ID_US0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct at91_uart_data uart0_data = {
+ .use_dma_tx = 1,
+ .use_dma_rx = 1,
+};
+
+static struct platform_device at91rm9200_uart0_device = {
+ .name = "at91_usart",
+ .id = 1,
+ .dev = {
+ .platform_data = &uart0_data,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = uart0_resources,
+ .num_resources = ARRAY_SIZE(uart0_resources),
+};
+
+static inline void configure_usart0_pins(void)
+{
+ at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
+ at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
+ at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
+
+ /*
+ * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
+ * We need to drive the pin manually. Default is off (RTS is active low).
+ */
+ at91_set_gpio_output(AT91_PIN_PA21, 1);
+}
+
+static struct resource uart1_resources[] = {
+ [0] = {
+ .start = AT91_BASE_US1,
+ .end = AT91_BASE_US1 + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_US1,
+ .end = AT91_ID_US1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct at91_uart_data uart1_data = {
+ .use_dma_tx = 1,
+ .use_dma_rx = 1,
+};
+
+static struct platform_device at91rm9200_uart1_device = {
+ .name = "at91_usart",
+ .id = 2,
+ .dev = {
+ .platform_data = &uart1_data,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = uart1_resources,
+ .num_resources = ARRAY_SIZE(uart1_resources),
+};
+
+static inline void configure_usart1_pins(void)
+{
+ at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
+ at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
+ at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
+ at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
+ at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
+ at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
+ at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
+ at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
+}
+
+static struct resource uart2_resources[] = {
+ [0] = {
+ .start = AT91_BASE_US2,
+ .end = AT91_BASE_US2 + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_US2,
+ .end = AT91_ID_US2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct at91_uart_data uart2_data = {
+ .use_dma_tx = 1,
+ .use_dma_rx = 1,
+};
+
+static struct platform_device at91rm9200_uart2_device = {
+ .name = "at91_usart",
+ .id = 3,
+ .dev = {
+ .platform_data = &uart2_data,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = uart2_resources,
+ .num_resources = ARRAY_SIZE(uart2_resources),
+};
+
+static inline void configure_usart2_pins(void)
+{
+ at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
+ at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
+}
+
+static struct resource uart3_resources[] = {
+ [0] = {
+ .start = AT91_BASE_US3,
+ .end = AT91_BASE_US3 + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91_ID_US3,
+ .end = AT91_ID_US3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct at91_uart_data uart3_data = {
+ .use_dma_tx = 1,
+ .use_dma_rx = 1,
+};
+
+static struct platform_device at91rm9200_uart3_device = {
+ .name = "at91_usart",
+ .id = 4,
+ .dev = {
+ .platform_data = &uart3_data,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .resource = uart3_resources,
+ .num_resources = ARRAY_SIZE(uart3_resources),
+};
+
+static inline void configure_usart3_pins(void)
+{
+ at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
+ at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
+}
+
+struct platform_device *at91_uarts[AT91_NR_UART]; /* the UARTs to use */
+struct platform_device *at91_default_console_device; /* the serial console device */
+
+void __init at91_init_serial(struct at91_uart_config *config)
+{
+ int i;
+
+ /* Fill in list of supported UARTs */
+ for (i = 0; i < config->nr_tty; i++) {
+ switch (config->tty_map[i]) {
+ case 0:
+ configure_usart0_pins();
+ at91_uarts[i] = &at91rm9200_uart0_device;
+ at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
+ break;
+ case 1:
+ configure_usart1_pins();
+ at91_uarts[i] = &at91rm9200_uart1_device;
+ at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
+ break;
+ case 2:
+ configure_usart2_pins();
+ at91_uarts[i] = &at91rm9200_uart2_device;
+ at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
+ break;
+ case 3:
+ configure_usart3_pins();
+ at91_uarts[i] = &at91rm9200_uart3_device;
+ at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
+ break;
+ case 4:
+ configure_dbgu_pins();
+ at91_uarts[i] = &at91rm9200_dbgu_device;
+ at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
+ break;
+ default:
+ continue;
+ }
+ at91_uarts[i]->id = i; /* update ID number to mapped ID */
+ }
+
+ /* Set serial console device */
+ if (config->console_tty < AT91_NR_UART)
+ at91_default_console_device = at91_uarts[config->console_tty];
+ if (!at91_default_console_device)
+ printk(KERN_INFO "AT91: No default serial console defined.\n");
+}
+
+void __init at91_add_device_serial(void)
+{
+ int i;
+
+ for (i = 0; i < AT91_NR_UART; i++) {
+ if (at91_uarts[i])
+ platform_device_register(at91_uarts[i]);
+ }
+}
+#else
+void __init at91_init_serial(struct at91_uart_config *config) {}
+void __init at91_add_device_serial(void) {}
+#endif
+
+
/* -------------------------------------------------------------------- */
+
+/*
+ * These devices are always present and don't need any board-specific
+ * setup.
+ */
+static int __init at91_add_standard_devices(void)
+{
+ at91_add_device_rtc();
+ at91_add_device_watchdog();
+ return 0;
+}
+
+arch_initcall(at91_add_standard_devices);
diff --git a/arch/arm/mach-at91rm9200/generic.h b/arch/arm/mach-at91rm9200/generic.h
index 9bd541eba0a..f0d969d7d87 100644
--- a/arch/arm/mach-at91rm9200/generic.h
+++ b/arch/arm/mach-at91rm9200/generic.h
@@ -16,3 +16,10 @@ extern struct sys_timer at91rm9200_timer;
extern void __init at91rm9200_map_io(void);
extern int __init at91_clock_init(unsigned long main_clock);
+struct device;
+extern void __init at91_clock_associate(const char *id, struct device *dev, const char *func);
+
+ /* Power Management */
+extern void at91_irq_suspend(void);
+extern void at91_irq_resume(void);
+
diff --git a/arch/arm/mach-at91rm9200/gpio.c b/arch/arm/mach-at91rm9200/gpio.c
index 5ab46274e1a..3430ea05466 100644
--- a/arch/arm/mach-at91rm9200/gpio.c
+++ b/arch/arm/mach-at91rm9200/gpio.c
@@ -213,6 +213,84 @@ EXPORT_SYMBOL(at91_get_gpio_value);
/*--------------------------------------------------------------------------*/
+#ifdef CONFIG_PM
+
+static u32 wakeups[BGA_GPIO_BANKS];
+static u32 backups[BGA_GPIO_BANKS];
+
+static int gpio_irq_set_wake(unsigned pin, unsigned state)
+{
+ unsigned mask = pin_to_mask(pin);
+
+ pin -= PIN_BASE;
+ pin /= 32;
+
+ if (unlikely(pin >= BGA_GPIO_BANKS))
+ return -EINVAL;
+
+ if (state)
+ wakeups[pin] |= mask;
+ else
+ wakeups[pin] &= ~mask;
+
+ return 0;
+}
+
+void at91_gpio_suspend(void)
+{
+ int i;
+
+ for (i = 0; i < BGA_GPIO_BANKS; i++) {
+ u32 pio = pio_controller_offset[i];
+
+ /*
+ * Note: drivers should have disabled GPIO interrupts that
+ * aren't supposed to be wakeup sources.
+ * But that is not much good on ARM..... disable_irq() does
+ * not update the hardware immediately, so the hardware mask
+ * (IMR) has the wrong value (not current, too much is
+ * permitted).
+ *
+ * Our workaround is to disable all non-wakeup IRQs ...
+ * which is exactly what correct drivers asked for in the
+ * first place!
+ */
+ backups[i] = at91_sys_read(pio + PIO_IMR);
+ at91_sys_write(pio_controller_offset[i] + PIO_IDR, backups[i]);
+ at91_sys_write(pio_controller_offset[i] + PIO_IER, wakeups[i]);
+
+ if (!wakeups[i]) {
+ disable_irq_wake(AT91_ID_PIOA + i);
+ at91_sys_write(AT91_PMC_PCDR, 1 << (AT91_ID_PIOA + i));
+ } else {
+ enable_irq_wake(AT91_ID_PIOA + i);
+#ifdef CONFIG_PM_DEBUG
+ printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", "ABCD"[i], wakeups[i]);
+#endif
+ }
+ }
+}
+
+void at91_gpio_resume(void)
+{
+ int i;
+
+ for (i = 0; i < BGA_GPIO_BANKS; i++) {
+ at91_sys_write(pio_controller_offset[i] + PIO_IDR, wakeups[i]);
+ at91_sys_write(pio_controller_offset[i] + PIO_IER, backups[i]);
+ }
+
+ at91_sys_write(AT91_PMC_PCER,
+ (1 << AT91_ID_PIOA)
+ | (1 << AT91_ID_PIOB)
+ | (1 << AT91_ID_PIOC)
+ | (1 << AT91_ID_PIOD));
+}
+
+#else
+#define gpio_irq_set_wake NULL
+#endif
+
/* Several AIC controller irqs are dispatched through this GPIO handler.
* To use any AT91_PIN_* as an externally triggered IRQ, first call
@@ -252,6 +330,7 @@ static struct irqchip gpio_irqchip = {
.mask = gpio_irq_mask,
.unmask = gpio_irq_unmask,
.set_type = gpio_irq_type,
+ .set_wake = gpio_irq_set_wake,
};
static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs *regs)
@@ -266,6 +345,7 @@ static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs
/* temporarily mask (level sensitive) parent IRQ */
desc->chip->ack(irq);
for (;;) {
+ /* reading ISR acks the pending (edge triggered) GPIO interrupt */
isr = __raw_readl(pio + PIO_ISR) & __raw_readl(pio + PIO_IMR);
if (!isr)
break;
@@ -315,15 +395,16 @@ void __init at91_gpio_irq_setup(unsigned banks)
set_irq_chipdata(id, controller);
for (i = 0; i < 32; i++, pin++) {
+ /*
+ * Can use the "simple" and not "edge" handler since it's
+ * shorter, and the AIC handles interupts sanely.
+ */
set_irq_chip(pin, &gpio_irqchip);
set_irq_handler(pin, do_simple_IRQ);
set_irq_flags(pin, IRQF_VALID);
}
set_irq_chained_handler(id, gpio_irq_handler);
-
- /* enable the PIO peripheral clock */
- at91_sys_write(AT91_PMC_PCER, 1 << id);
}
pr_info("AT91: %d gpio irqs in %d banks\n", pin - PIN_BASE, banks);
}
diff --git a/arch/arm/mach-at91rm9200/irq.c b/arch/arm/mach-at91rm9200/irq.c
index cb62bc83a1d..70f4d7ac153 100644
--- a/arch/arm/mach-at91rm9200/irq.c
+++ b/arch/arm/mach-at91rm9200/irq.c
@@ -92,10 +92,6 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
{
unsigned int smr, srctype;
- /* change triggering only for FIQ and external IRQ0..IRQ6 */
- if ((irq < AT91_ID_IRQ0) && (irq != AT91_ID_FIQ))
- return -EINVAL;
-
switch (type) {
case IRQT_HIGH:
srctype = AT91_AIC_SRCTYPE_HIGH;
@@ -104,9 +100,13 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
srctype = AT91_AIC_SRCTYPE_RISING;
break;
case IRQT_LOW:
+ if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0)) /* only supported on external interrupts */
+ return -EINVAL;
srctype = AT91_AIC_SRCTYPE_LOW;
break;
case IRQT_FALLING:
+ if ((irq > AT91_ID_FIQ) && (irq < AT91_ID_IRQ0)) /* only supported on external interrupts */
+ return -EINVAL;
srctype = AT91_AIC_SRCTYPE_FALLING;
break;
default:
@@ -118,11 +118,47 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
return 0;
}
+#ifdef CONFIG_PM
+
+static u32 wakeups;
+static u32 backups;
+
+static int at91rm9200_irq_set_wake(unsigned irq, unsigned value)
+{
+ if (unlikely(irq >= 32))
+ return -EINVAL;
+
+ if (value)
+ wakeups |= (1 << irq);
+ else
+ wakeups &= ~(1 << irq);
+
+ return 0;
+}
+
+void at91_irq_suspend(void)
+{
+ backups = at91_sys_read(AT91_AIC_IMR);
+ at91_sys_write(AT91_AIC_IDCR, backups);
+ at91_sys_write(AT91_AIC_IECR, wakeups);
+}
+
+void at91_irq_resume(void)
+{
+ at91_sys_write(AT91_AIC_IDCR, wakeups);
+ at91_sys_write(AT91_AIC_IECR, backups);
+}
+
+#else
+#define at91rm9200_irq_set_wake NULL
+#endif
+
static struct irqchip at91rm9200_irq_chip = {
.ack = at91rm9200_mask_irq,
.mask = at91rm9200_mask_irq,
.unmask = at91rm9200_unmask_irq,
.set_type = at91rm9200_irq_type,
+ .set_wake = at91rm9200_irq_set_wake,
};
/*
diff --git a/arch/arm/mach-at91rm9200/pm.c b/arch/arm/mach-at91rm9200/pm.c
new file mode 100644
index 00000000000..47e5480feb7
--- /dev/null
+++ b/arch/arm/mach-at91rm9200/pm.c
@@ -0,0 +1,225 @@
+/*
+ * arch/arm/mach-at91rm9200/pm.c
+ * AT91 Power Management
+ *
+ * Copyright (C) 2005 David Brownell
+ *
+ * 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.
+ */
+
+#include <linux/pm.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/pm.h>
+#include <linux/interrupt.h>
+#include <linux/sysfs.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/atomic.h>
+#include <asm/mach/time.h>
+#include <asm/mach/irq.h>
+#include <asm/mach-types.h>
+
+#include <asm/arch/gpio.h>
+
+#include "generic.h"
+
+
+static int at91_pm_valid_state(suspend_state_t state)
+{
+ switch (state) {
+ case PM_SUSPEND_ON:
+ case PM_SUSPEND_STANDBY:
+ case PM_SUSPEND_MEM:
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+
+static suspend_state_t target_state;
+
+/*
+ * Called after processes are frozen, but before we shutdown devices.
+ */
+static int at91_pm_prepare(suspend_state_t state)
+{
+ target_state = state;
+ return 0;
+}
+
+/*
+ * Verify that all the clocks are correct before entering
+ * slow-clock mode.
+ */
+static int at91_pm_verify_clocks(void)
+{
+ unsigned long scsr;
+ int i;
+
+ scsr = at91_sys_read(AT91_PMC_SCSR);
+
+ /* USB must not be using PLLB */
+ if ((scsr & (AT91_PMC_UHP | AT91_PMC_UDP)) != 0) {
+ pr_debug("AT91: PM - Suspend-to-RAM with USB still active\n");
+ return 0;
+ }
+
+#ifdef CONFIG_AT91_PROGRAMMABLE_CLOCKS
+ /* PCK0..PCK3 must be disabled, or configured to use clk32k */
+ for (i = 0; i < 4; i++) {
+ u32 css;
+
+ if ((scsr & (AT91_PMC_PCK0 << i)) == 0)
+ continue;
+
+ css = at91_sys_read(AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
+ if (css != AT91_PMC_CSS_SLOW) {
+ pr_debug("AT91: PM - Suspend-to-RAM with PCK%d src %d\n", i, css);
+ return 0;
+ }
+ }
+#endif
+
+ return 1;
+}
+
+/*
+ * Call this from platform driver suspend() to see how deeply to suspend.
+ * For example, some controllers (like OHCI) need one of the PLL clocks
+ * in order to act as a wakeup source, and those are not available when
+ * going into slow clock mode.
+ *
+ * REVISIT: generalize as clk_will_be_available(clk)? Other platforms have
+ * the very same problem (but not using at91 main_clk), and it'd be better
+ * to add one generic API rather than lots of platform-specific ones.
+ */
+int at91_suspend_entering_slow_clock(void)
+{
+ return (target_state == PM_SUSPEND_MEM);
+}
+EXPORT_SYMBOL(at91_suspend_entering_slow_clock);
+
+
+static void (*slow_clock)(void);
+
+
+
+static int at91_pm_enter(suspend_state_t state)
+{
+ at91_gpio_suspend();
+ at91_irq_suspend();
+
+ pr_debug("AT91: PM - wake mask %08x, pm state %d\n",
+ /* remember all the always-wake irqs */
+ (at91_sys_read(AT91_PMC_PCSR)
+ | (1 << AT91_ID_FIQ)
+ | (1 << AT91_ID_SYS)
+ | (1 << AT91_ID_IRQ0)
+ | (1 << AT91_ID_IRQ1)
+ | (1 << AT91_ID_IRQ2)
+ | (1 << AT91_ID_IRQ3)
+ | (1 << AT91_ID_IRQ4)
+ | (1 << AT91_ID_IRQ5)
+ | (1 << AT91_ID_IRQ6))
+ & at91_sys_read(AT91_AIC_IMR),
+ state);
+
+ switch (state) {
+ /*
+ * Suspend-to-RAM is like STANDBY plus slow clock mode, so
+ * drivers must suspend more deeply: only the master clock
+ * controller may be using the main oscillator.
+ */
+ case PM_SUSPEND_MEM:
+ /*
+ * Ensure that clocks are in a valid state.
+ */
+ if (!at91_pm_verify_clocks())
+ goto error;
+
+ /*
+ * Enter slow clock mode by switching over to clk32k and
+ * turning off the main oscillator; reverse on wakeup.
+ */
+ if (slow_clock) {
+ slow_clock();
+ break;
+ } else {
+ /* DEVELOPMENT ONLY */
+ pr_info("AT91: PM - no slow clock mode yet ...\n");
+ /* FALLTHROUGH leaving master clock alone */
+ }
+
+ /*
+ * STANDBY mode has *all* drivers suspended; ignores irqs not
+ * marked as 'wakeup' event sources; and reduces DRAM power.
+ * But otherwise it's identical to PM_SUSPEND_ON: cpu idle, and
+ * nothing fancy done with main or cpu clocks.
+ */
+ case PM_SUSPEND_STANDBY:
+ /*
+ * NOTE: the Wait-for-Interrupt instruction needs to be
+ * in icache so the SDRAM stays in self-refresh mode until
+ * the wakeup IRQ occurs.
+ */
+ asm("b 1f; .align 5; 1:");
+ asm("mcr p15, 0, r0, c7, c10, 4"); /* drain write buffer */
+ at91_sys_write(AT91_SDRAMC_SRR, 1); /* self-refresh mode */
+ /* fall though to next state */
+
+ case PM_SUSPEND_ON:
+ asm("mcr p15, 0, r0, c7, c0, 4"); /* wait for interrupt */
+ break;
+
+ default:
+ pr_debug("AT91: PM - bogus suspend state %d\n", state);
+ goto error;
+ }
+
+ pr_debug("AT91: PM - wakeup %08x\n",
+ at91_sys_read(AT91_AIC_IPR) & at91_sys_read(AT91_AIC_IMR));
+
+error:
+ target_state = PM_SUSPEND_ON;
+ at91_irq_resume();
+ at91_gpio_resume();
+ return 0;
+}
+
+
+static struct pm_ops at91_pm_ops ={
+ .pm_disk_mode = 0,
+ .valid = at91_pm_valid_state,
+ .prepare = at91_pm_prepare,
+ .enter = at91_pm_enter,
+};
+
+static int __init at91_pm_init(void)
+{
+ printk("AT91: Power Management\n");
+
+#ifdef CONFIG_AT91_PM_SLOW_CLOCK
+ /* REVISIT allocations of SRAM should be dynamically managed.
+ * FIQ handlers and other components will want SRAM/TCM too...
+ */
+ slow_clock = (void *) (AT91_VA_BASE_SRAM + (3 * SZ_4K));
+ memcpy(slow_clock, at91rm9200_slow_clock, at91rm9200_slow_clock_sz);
+#endif
+
+ /* Disable SDRAM low-power mode. Cannot be used with self-refresh. */
+ at91_sys_write(AT91_SDRAMC_LPR, 0);
+
+ pm_set_ops(&at91_pm_ops);
+
+ return 0;
+}
+arch_initcall(at91_pm_init);
diff --git a/arch/arm/mach-at91rm9200/time.c b/arch/arm/mach-at91rm9200/time.c
index 7ffcf443b99..fc2d7d5e463 100644
--- a/arch/arm/mach-at91rm9200/time.c
+++ b/arch/arm/mach-at91rm9200/time.c
@@ -31,6 +31,8 @@
#include <asm/irq.h>
#include <asm/mach/time.h>
+static unsigned long last_crtr;
+
/*
* The ST_CRTR is updated asynchronously to the master clock. It is therefore
* necessary to read it twice (with the same value) to ensure accuracy.
@@ -56,7 +58,7 @@ static unsigned long at91rm9200_gettimeoffset(void)
{
unsigned long elapsed;
- elapsed = (read_CRTR() - at91_sys_read(AT91_ST_RTAR)) & AT91_ST_ALMV;
+ elapsed = (read_CRTR() - last_crtr) & AT91_ST_ALMV;
return (unsigned long)(elapsed * (tick_nsec / 1000)) / LATCH;
}
@@ -66,15 +68,12 @@ static unsigned long at91rm9200_gettimeoffset(void)
*/
static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
- unsigned long rtar;
-
if (at91_sys_read(AT91_ST_SR) & AT91_ST_PITS) { /* This is a shared interrupt */
write_seqlock(&xtime_lock);
- while (((read_CRTR() - at91_sys_read(AT91_ST_RTAR)) & AT91_ST_ALMV) >= LATCH) {
+ while (((read_CRTR() - last_crtr) & AT91_ST_ALMV) >= LATCH) {
timer_tick(regs);
- rtar = (at91_sys_read(AT91_ST_RTAR) + LATCH) & AT91_ST_ALMV;
- at91_sys_write(AT91_ST_RTAR, rtar);
+ last_crtr = (last_crtr + LATCH) & AT91_ST_ALMV;
}
write_sequnlock(&xtime_lock);
@@ -87,10 +86,24 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id, struct pt_r
static struct irqaction at91rm9200_timer_irq = {
.name = "at91_tick",
- .flags = SA_SHIRQ | SA_INTERRUPT,
+ .flags = SA_SHIRQ | SA_INTERRUPT | SA_TIMER,
.handler = at91rm9200_timer_interrupt
};
+void at91rm9200_timer_reset(void)
+{
+ last_crtr = 0;
+
+ /* Real time counter incremented every 30.51758 microseconds */
+ at91_sys_write(AT91_ST_RTMR, 1);
+
+ /* Set Period Interval timer */
+ at91_sys_write(AT91_ST_PIMR, LATCH);
+
+ /* Enable Period Interval Timer interrupt */
+ at91_sys_write(AT91_ST_IER, AT91_ST_PITS);
+}
+
/*
* Set up timer interrupt.
*/
@@ -100,28 +113,30 @@ void __init at91rm9200_timer_init(void)
at91_sys_write(AT91_ST_IDR, AT91_ST_PITS | AT91_ST_WDOVF | AT91_ST_RTTINC | AT91_ST_ALMS);
(void) at91_sys_read(AT91_ST_SR); /* Clear any pending interrupts */
- /*
- * Make IRQs happen for the system timer.
- */
+ /* Make IRQs happen for the system timer */
setup_irq(AT91_ID_SYS, &at91rm9200_timer_irq);
- /* Set initial alarm to 0 */
- at91_sys_write(AT91_ST_RTAR, 0);
-
- /* Real time counter incremented every 30.51758 microseconds */
- at91_sys_write(AT91_ST_RTMR, 1);
-
- /* Set Period Interval timer */
- at91_sys_write(AT91_ST_PIMR, LATCH);
-
/* Change the kernel's 'tick' value to 10009 usec. (the default is 10000) */
tick_usec = (LATCH * 1000000) / CLOCK_TICK_RATE;
- /* Enable Period Interval Timer interrupt */
- at91_sys_write(AT91_ST_IER, AT91_ST_PITS);
+ /* Initialize and enable the timer interrupt */
+ at91rm9200_timer_reset();
+}
+
+#ifdef CONFIG_PM
+static void at91rm9200_timer_suspend(void)
+{
+ /* disable Period Interval Timer interrupt */
+ at91_sys_write(AT91_ST_IDR, AT91_ST_PITS);
}
+#else
+#define at91rm9200_timer_suspend NULL
+#endif
struct sys_timer at91rm9200_timer = {
.init = at91rm9200_timer_init,
.offset = at91rm9200_gettimeoffset,
+ .suspend = at91rm9200_timer_suspend,
+ .resume = at91rm9200_timer_reset,
};
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-19 10:53:58 +0000