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Diffstat (limited to 'arch/arm/mach-at91/at91rm9200.c')
-rw-r--r--arch/arm/mach-at91/at91rm9200.c165
1 files changed, 108 insertions, 57 deletions
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index 2e9ecad97f3..787bb50a4df 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -11,35 +11,24 @@
*/
#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/clk/at91_pmc.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
+#include <asm/system_misc.h>
#include <mach/at91rm9200.h>
-#include <mach/at91_pmc.h>
#include <mach/at91_st.h>
+#include <mach/cpu.h>
+#include <mach/hardware.h>
+#include "at91_aic.h"
+#include "soc.h"
#include "generic.h"
#include "clock.h"
-
-static struct map_desc at91rm9200_io_desc[] __initdata = {
- {
- .virtual = AT91_VA_BASE_SYS,
- .pfn = __phys_to_pfn(AT91_BASE_SYS),
- .length = SZ_4K,
- .type = MT_DEVICE,
- }, {
- .virtual = AT91_VA_BASE_EMAC,
- .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
- .length = SZ_16K,
- .type = MT_DEVICE,
- }, {
- .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
- .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
- .length = AT91RM9200_SRAM_SIZE,
- .type = MT_DEVICE,
- },
-};
+#include "sam9_smc.h"
+#include "pm.h"
/* --------------------------------------------------------------------
* Clocks
@@ -191,6 +180,57 @@ static struct clk *periph_clocks[] __initdata = {
// irq0 .. irq6
};
+static struct clk_lookup periph_clocks_lookups[] = {
+ CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
+ CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
+ CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
+ CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
+ CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
+ CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
+ CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
+ CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
+ CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk),
+ CLKDEV_CON_DEV_ID("pclk", "fffd0000.ssc", &ssc0_clk),
+ CLKDEV_CON_DEV_ID("pclk", "fffd4000.ssc", &ssc1_clk),
+ CLKDEV_CON_DEV_ID("pclk", "fffd8000.ssc", &ssc2_clk),
+ CLKDEV_CON_DEV_ID(NULL, "i2c-at91rm9200.0", &twi_clk),
+ /* fake hclk clock */
+ CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
+ CLKDEV_CON_ID("pioA", &pioA_clk),
+ CLKDEV_CON_ID("pioB", &pioB_clk),
+ CLKDEV_CON_ID("pioC", &pioC_clk),
+ CLKDEV_CON_ID("pioD", &pioD_clk),
+ /* usart lookup table for DT entries */
+ CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck),
+ CLKDEV_CON_DEV_ID("usart", "fffc0000.serial", &usart0_clk),
+ CLKDEV_CON_DEV_ID("usart", "fffc4000.serial", &usart1_clk),
+ CLKDEV_CON_DEV_ID("usart", "fffc8000.serial", &usart2_clk),
+ CLKDEV_CON_DEV_ID("usart", "fffcc000.serial", &usart3_clk),
+ /* tc lookup table for DT entries */
+ CLKDEV_CON_DEV_ID("t0_clk", "fffa0000.timer", &tc0_clk),
+ CLKDEV_CON_DEV_ID("t1_clk", "fffa0000.timer", &tc1_clk),
+ CLKDEV_CON_DEV_ID("t2_clk", "fffa0000.timer", &tc2_clk),
+ CLKDEV_CON_DEV_ID("t0_clk", "fffa4000.timer", &tc3_clk),
+ CLKDEV_CON_DEV_ID("t1_clk", "fffa4000.timer", &tc4_clk),
+ CLKDEV_CON_DEV_ID("t2_clk", "fffa4000.timer", &tc5_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fffb4000.mmc", &mmc_clk),
+ CLKDEV_CON_DEV_ID("emac_clk", "fffbc000.ethernet", &ether_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffb8000.i2c", &twi_clk),
+ CLKDEV_CON_DEV_ID("hclk", "300000.ohci", &ohci_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioD_clk),
+};
+
+static struct clk_lookup usart_clocks_lookups[] = {
+ CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
+ CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
+ CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
+ CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
+ CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
+};
+
/*
* The four programmable clocks.
* You must configure pin multiplexing to bring these signals out.
@@ -227,6 +267,11 @@ static void __init at91rm9200_register_clocks(void)
for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
clk_register(periph_clocks[i]);
+ clkdev_add_table(periph_clocks_lookups,
+ ARRAY_SIZE(periph_clocks_lookups));
+ clkdev_add_table(usart_clocks_lookups,
+ ARRAY_SIZE(usart_clocks_lookups));
+
clk_register(&pck0);
clk_register(&pck1);
clk_register(&pck2);
@@ -237,58 +282,64 @@ static void __init at91rm9200_register_clocks(void)
* GPIO
* -------------------------------------------------------------------- */
-static struct at91_gpio_bank at91rm9200_gpio[] = {
+static struct at91_gpio_bank at91rm9200_gpio[] __initdata = {
{
.id = AT91RM9200_ID_PIOA,
- .offset = AT91_PIOA,
- .clock = &pioA_clk,
+ .regbase = AT91RM9200_BASE_PIOA,
}, {
.id = AT91RM9200_ID_PIOB,
- .offset = AT91_PIOB,
- .clock = &pioB_clk,
+ .regbase = AT91RM9200_BASE_PIOB,
}, {
.id = AT91RM9200_ID_PIOC,
- .offset = AT91_PIOC,
- .clock = &pioC_clk,
+ .regbase = AT91RM9200_BASE_PIOC,
}, {
.id = AT91RM9200_ID_PIOD,
- .offset = AT91_PIOD,
- .clock = &pioD_clk,
+ .regbase = AT91RM9200_BASE_PIOD,
}
};
-static void at91rm9200_reset(void)
+static void at91rm9200_idle(void)
{
/*
- * Perform a hardware reset with the use of the Watchdog timer.
+ * Disable the processor clock. The processor will be automatically
+ * re-enabled by an interrupt or by a reset.
*/
- at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
- at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
+ at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
}
+static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
+{
+ /*
+ * Perform a hardware reset with the use of the Watchdog timer.
+ */
+ at91_st_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
+ at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
+}
/* --------------------------------------------------------------------
* AT91RM9200 processor initialization
* -------------------------------------------------------------------- */
-void __init at91rm9200_initialize(unsigned long main_clock, unsigned short banks)
+static void __init at91rm9200_map_io(void)
{
/* Map peripherals */
- iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
-
- at91_arch_reset = at91rm9200_reset;
- at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
- | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
- | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
- | (1 << AT91RM9200_ID_IRQ6);
+ at91_init_sram(0, AT91RM9200_SRAM_BASE, AT91RM9200_SRAM_SIZE);
+}
- /* Init clock subsystem */
- at91_clock_init(main_clock);
+static void __init at91rm9200_ioremap_registers(void)
+{
+ at91rm9200_ioremap_st(AT91RM9200_BASE_ST);
+ at91_ioremap_ramc(0, AT91RM9200_BASE_MC, 256);
+ at91_pm_set_standby(at91rm9200_standby);
+}
- /* Register the processor-specific clocks */
- at91rm9200_register_clocks();
+static void __init at91rm9200_initialize(void)
+{
+ arm_pm_idle = at91rm9200_idle;
+ arm_pm_restart = at91rm9200_restart;
/* Initialize GPIO subsystem */
- at91_gpio_init(at91rm9200_gpio, banks);
+ at91_gpio_init(at91rm9200_gpio,
+ cpu_is_at91rm9200_bga() ? AT91RM9200_BGA : AT91RM9200_PQFP);
}
@@ -334,14 +385,14 @@ static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
0 /* Advanced Interrupt Controller (IRQ6) */
};
-void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
-{
- if (!priority)
- priority = at91rm9200_default_irq_priority;
-
- /* Initialize the AIC interrupt controller */
- at91_aic_init(priority);
-
- /* Enable GPIO interrupts */
- at91_gpio_irq_setup();
-}
+AT91_SOC_START(at91rm9200)
+ .map_io = at91rm9200_map_io,
+ .default_irq_priority = at91rm9200_default_irq_priority,
+ .extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
+ | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
+ | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
+ | (1 << AT91RM9200_ID_IRQ6),
+ .ioremap_registers = at91rm9200_ioremap_registers,
+ .register_clocks = at91rm9200_register_clocks,
+ .init = at91rm9200_initialize,
+AT91_SOC_END
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 18:39:34 +0000