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-rw-r--r--arch/arm/mach-at91/Kconfig9
-rw-r--r--arch/arm/mach-at91/Makefile1
-rw-r--r--arch/arm/mach-at91/at91rm9200.c22
-rw-r--r--arch/arm/mach-at91/at91rm9200_time.c63
-rw-r--r--arch/arm/mach-at91/at91sam9260.c8
-rw-r--r--arch/arm/mach-at91/at91sam9261.c4
-rw-r--r--arch/arm/mach-at91/at91sam9263.c11
-rw-r--r--arch/arm/mach-at91/at91sam9g45.c12
-rw-r--r--arch/arm/mach-at91/at91sam9n12.c16
-rw-r--r--arch/arm/mach-at91/at91sam9rl.c4
-rw-r--r--arch/arm/mach-at91/at91sam9x5.c21
-rw-r--r--arch/arm/mach-at91/board-dt.c2
-rw-r--r--arch/arm/mach-at91/board-rm9200-dt.c57
-rw-r--r--arch/arm/mach-at91/generic.h1
-rw-r--r--arch/arm/mach-at91/gpio.c190
-rw-r--r--arch/arm/mach-at91/setup.c20
-rw-r--r--arch/arm/mach-at91/soc.h12
17 files changed, 252 insertions, 201 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 043624219b55..e34c1bdb804d 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -494,8 +494,17 @@ endif
comment "Generic Board Type"
+config MACH_AT91RM9200_DT
+ bool "Atmel AT91RM9200 Evaluation Kits with device-tree support"
+ depends on SOC_AT91RM9200
+ select USE_OF
+ help
+ Select this if you want to experiment device-tree with
+ an Atmel RM9200 Evaluation Kit.
+
config MACH_AT91SAM_DT
bool "Atmel AT91SAM Evaluation Kits with device-tree support"
+ depends on SOC_AT91SAM9
select USE_OF
help
Select this if you want to experiment device-tree with
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 3bb7a51efc9d..b38a1dcb79b8 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -88,6 +88,7 @@ obj-$(CONFIG_MACH_SNAPPER_9260) += board-snapper9260.o
obj-$(CONFIG_MACH_AT91SAM9M10G45EK) += board-sam9m10g45ek.o
# AT91SAM board with device-tree
+obj-$(CONFIG_MACH_AT91RM9200_DT) += board-rm9200-dt.o
obj-$(CONFIG_MACH_AT91SAM_DT) += board-dt.o
# AT91X40 board-specific support
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index 5269825194a8..6cceb42a4c33 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -194,6 +194,24 @@ static struct clk_lookup periph_clocks_lookups[] = {
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("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[] = {
@@ -361,10 +379,10 @@ static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
0 /* Advanced Interrupt Controller (IRQ6) */
};
-struct at91_init_soc __initdata at91rm9200_soc = {
+AT91_SOC_START(rm9200)
.map_io = at91rm9200_map_io,
.default_irq_priority = at91rm9200_default_irq_priority,
.ioremap_registers = at91rm9200_ioremap_registers,
.register_clocks = at91rm9200_register_clocks,
.init = at91rm9200_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c
index aaa443b48c91..cafe98836c8a 100644
--- a/arch/arm/mach-at91/at91rm9200_time.c
+++ b/arch/arm/mach-at91/at91rm9200_time.c
@@ -24,6 +24,9 @@
#include <linux/irq.h>
#include <linux/clockchips.h>
#include <linux/export.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/mach/time.h>
@@ -91,7 +94,8 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id)
static struct irqaction at91rm9200_timer_irq = {
.name = "at91_tick",
.flags = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
- .handler = at91rm9200_timer_interrupt
+ .handler = at91rm9200_timer_interrupt,
+ .irq = NR_IRQS_LEGACY + AT91_ID_SYS,
};
static cycle_t read_clk32k(struct clocksource *cs)
@@ -179,8 +183,60 @@ static struct clock_event_device clkevt = {
void __iomem *at91_st_base;
EXPORT_SYMBOL_GPL(at91_st_base);
+#ifdef CONFIG_OF
+static struct of_device_id at91rm9200_st_timer_ids[] = {
+ { .compatible = "atmel,at91rm9200-st" },
+ { /* sentinel */ }
+};
+
+static int __init of_at91rm9200_st_init(void)
+{
+ struct device_node *np;
+ int ret;
+
+ np = of_find_matching_node(NULL, at91rm9200_st_timer_ids);
+ if (!np)
+ goto err;
+
+ at91_st_base = of_iomap(np, 0);
+ if (!at91_st_base)
+ goto node_err;
+
+ /* Get the interrupts property */
+ ret = irq_of_parse_and_map(np, 0);
+ if (!ret)
+ goto ioremap_err;
+ at91rm9200_timer_irq.irq = ret;
+
+ of_node_put(np);
+
+ return 0;
+
+ioremap_err:
+ iounmap(at91_st_base);
+node_err:
+ of_node_put(np);
+err:
+ return -EINVAL;
+}
+#else
+static int __init of_at91rm9200_st_init(void)
+{
+ return -EINVAL;
+}
+#endif
+
void __init at91rm9200_ioremap_st(u32 addr)
{
+#ifdef CONFIG_OF
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, at91rm9200_st_timer_ids);
+ if (np) {
+ of_node_put(np);
+ return;
+ }
+#endif
at91_st_base = ioremap(addr, 256);
if (!at91_st_base)
panic("Impossible to ioremap ST\n");
@@ -191,13 +247,16 @@ void __init at91rm9200_ioremap_st(u32 addr)
*/
void __init at91rm9200_timer_init(void)
{
+ /* For device tree enabled device: initialize here */
+ of_at91rm9200_st_init();
+
/* Disable all timer interrupts, and clear any pending ones */
at91_st_write(AT91_ST_IDR,
AT91_ST_PITS | AT91_ST_WDOVF | AT91_ST_RTTINC | AT91_ST_ALMS);
at91_st_read(AT91_ST_SR);
/* Make IRQs happen for the system timer */
- setup_irq(NR_IRQS_LEGACY + AT91_ID_SYS, &at91rm9200_timer_irq);
+ setup_irq(at91rm9200_timer_irq.irq, &at91rm9200_timer_irq);
/* The 32KiHz "Slow Clock" (tick every 30517.58 nanoseconds) is used
* directly for the clocksource and all clockevents, after adjusting
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index f8202615f4a8..c9e029e44d8a 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -230,11 +230,15 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t1_clk", "fffdc000.timer", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "fffdc000.timer", &tc5_clk),
CLKDEV_CON_DEV_ID("hclk", "500000.ohci", &ohci_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fffa8000.mmc", &mmc_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_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),
};
static struct clk_lookup usart_clocks_lookups[] = {
@@ -390,10 +394,10 @@ static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9260_soc = {
+AT91_SOC_START(sam9260)
.map_io = at91sam9260_map_io,
.default_irq_priority = at91sam9260_default_irq_priority,
.ioremap_registers = at91sam9260_ioremap_registers,
.register_clocks = at91sam9260_register_clocks,
.init = at91sam9260_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index 04295c04b3e0..4d262f346fd9 100644
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.c
@@ -334,10 +334,10 @@ static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9261_soc = {
+AT91_SOC_START(sam9261)
.map_io = at91sam9261_map_io,
.default_irq_priority = at91sam9261_default_irq_priority,
.ioremap_registers = at91sam9261_ioremap_registers,
.register_clocks = at91sam9261_register_clocks,
.init = at91sam9261_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index d6f9c23927c4..ed390f6fa232 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -211,7 +211,14 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("hclk", "a00000.ohci", &ohci_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffa4000.spi", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "fffa8000.spi", &spi1_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fff80000.mmc", &mmc0_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fff84000.mmc", &mmc1_clk),
CLKDEV_CON_DEV_ID(NULL, "fff88000.i2c", &twi_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioCDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCDE_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
@@ -365,10 +372,10 @@ static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ1) */
};
-struct at91_init_soc __initdata at91sam9263_soc = {
+AT91_SOC_START(sam9263)
.map_io = at91sam9263_map_io,
.default_irq_priority = at91sam9263_default_irq_priority,
.ioremap_registers = at91sam9263_ioremap_registers,
.register_clocks = at91sam9263_register_clocks,
.init = at91sam9263_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index 84af1b506d92..c5c2acc4bf22 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -256,10 +256,18 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "fffd4000.timer", &tcb0_clk),
CLKDEV_CON_DEV_ID("hclk", "700000.ohci", &uhphs_clk),
CLKDEV_CON_DEV_ID("ehci_clk", "800000.ehci", &uhphs_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fff80000.mmc", &mmc0_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "fffd0000.mmc", &mmc1_clk),
CLKDEV_CON_DEV_ID(NULL, "fff84000.i2c", &twi0_clk),
CLKDEV_CON_DEV_ID(NULL, "fff88000.i2c", &twi1_clk),
/* fake hclk clock */
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &uhphs_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioC_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioDE_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioDE_clk),
+
CLKDEV_CON_ID("pioA", &pioA_clk),
CLKDEV_CON_ID("pioB", &pioB_clk),
CLKDEV_CON_ID("pioC", &pioC_clk),
@@ -409,10 +417,10 @@ static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ0) */
};
-struct at91_init_soc __initdata at91sam9g45_soc = {
+AT91_SOC_START(sam9g45)
.map_io = at91sam9g45_map_io,
.default_irq_priority = at91sam9g45_default_irq_priority,
.ioremap_registers = at91sam9g45_ioremap_registers,
.register_clocks = at91sam9g45_register_clocks,
.init = at91sam9g45_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9n12.c b/arch/arm/mach-at91/at91sam9n12.c
index 732d3d3f4ec5..70b3a99244ab 100644
--- a/arch/arm/mach-at91/at91sam9n12.c
+++ b/arch/arm/mach-at91/at91sam9n12.c
@@ -168,13 +168,14 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("usart", "f8028000.serial", &usart3_clk),
CLKDEV_CON_DEV_ID("t0_clk", "f8008000.timer", &tcb_clk),
CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "f0008000.mmc", &mmc_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma_clk),
CLKDEV_CON_DEV_ID(NULL, "f8010000.i2c", &twi0_clk),
CLKDEV_CON_DEV_ID(NULL, "f8014000.i2c", &twi1_clk),
- CLKDEV_CON_ID("pioA", &pioAB_clk),
- CLKDEV_CON_ID("pioB", &pioAB_clk),
- CLKDEV_CON_ID("pioC", &pioCD_clk),
- CLKDEV_CON_ID("pioD", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCD_clk),
/* additional fake clock for macb_hclk */
CLKDEV_CON_DEV_ID("hclk", "500000.ohci", &uhp_clk),
CLKDEV_CON_DEV_ID("ohci_clk", "500000.ohci", &uhp_clk),
@@ -223,13 +224,10 @@ static void __init at91sam9n12_map_io(void)
void __init at91sam9n12_initialize(void)
{
at91_extern_irq = (1 << AT91SAM9N12_ID_IRQ0);
-
- /* Register GPIO subsystem (using DT) */
- at91_gpio_init(NULL, 0);
}
-struct at91_init_soc __initdata at91sam9n12_soc = {
+AT91_SOC_START(sam9n12)
.map_io = at91sam9n12_map_io,
.register_clocks = at91sam9n12_register_clocks,
.init = at91sam9n12_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 72e908412222..cbe72e44c13f 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -338,10 +338,10 @@ static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
-struct at91_init_soc __initdata at91sam9rl_soc = {
+AT91_SOC_START(sam9rl)
.map_io = at91sam9rl_map_io,
.default_irq_priority = at91sam9rl_default_irq_priority,
.ioremap_registers = at91sam9rl_ioremap_registers,
.register_clocks = at91sam9rl_register_clocks,
.init = at91sam9rl_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c
index e5035380dcbc..3c729f0e2d3c 100644
--- a/arch/arm/mach-at91/at91sam9x5.c
+++ b/arch/arm/mach-at91/at91sam9x5.c
@@ -229,15 +229,17 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("usart", "f8028000.serial", &usart3_clk),
CLKDEV_CON_DEV_ID("t0_clk", "f8008000.timer", &tcb0_clk),
CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb0_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "f0008000.mmc", &mmc0_clk),
+ CLKDEV_CON_DEV_ID("mci_clk", "f000c000.mmc", &mmc1_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma0_clk),
CLKDEV_CON_DEV_ID("dma_clk", "ffffee00.dma-controller", &dma1_clk),
CLKDEV_CON_DEV_ID(NULL, "f8010000.i2c", &twi0_clk),
CLKDEV_CON_DEV_ID(NULL, "f8014000.i2c", &twi1_clk),
CLKDEV_CON_DEV_ID(NULL, "f8018000.i2c", &twi2_clk),
- CLKDEV_CON_ID("pioA", &pioAB_clk),
- CLKDEV_CON_ID("pioB", &pioAB_clk),
- CLKDEV_CON_ID("pioC", &pioCD_clk),
- CLKDEV_CON_ID("pioD", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioAB_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCD_clk),
+ CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCD_clk),
/* additional fake clock for macb_hclk */
CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb0_clk),
CLKDEV_CON_DEV_ID("hclk", "f8030000.ethernet", &macb1_clk),
@@ -313,18 +315,11 @@ static void __init at91sam9x5_map_io(void)
at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
}
-void __init at91sam9x5_initialize(void)
-{
- /* Register GPIO subsystem (using DT) */
- at91_gpio_init(NULL, 0);
-}
-
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
-struct at91_init_soc __initdata at91sam9x5_soc = {
+AT91_SOC_START(sam9x5)
.map_io = at91sam9x5_map_io,
.register_clocks = at91sam9x5_register_clocks,
- .init = at91sam9x5_initialize,
-};
+AT91_SOC_END
diff --git a/arch/arm/mach-at91/board-dt.c b/arch/arm/mach-at91/board-dt.c
index e8f45c4e0ea8..3b6a94820fa0 100644
--- a/arch/arm/mach-at91/board-dt.c
+++ b/arch/arm/mach-at91/board-dt.c
@@ -30,8 +30,6 @@
static const struct of_device_id irq_of_match[] __initconst = {
{ .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
- { .compatible = "atmel,at91rm9200-gpio", .data = at91_gpio_of_irq_setup },
- { .compatible = "atmel,at91sam9x5-gpio", .data = at91_gpio_of_irq_setup },
{ /*sentinel*/ }
};
diff --git a/arch/arm/mach-at91/board-rm9200-dt.c b/arch/arm/mach-at91/board-rm9200-dt.c
new file mode 100644
index 000000000000..5f9ce3da3fde
--- /dev/null
+++ b/arch/arm/mach-at91/board-rm9200-dt.c
@@ -0,0 +1,57 @@
+/*
+ * Setup code for AT91RM9200 Evaluation Kits with Device Tree support
+ *
+ * Copyright (C) 2011 Atmel,
+ * 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
+ * 2012 Joachim Eastwood <manabian@gmail.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "at91_aic.h"
+#include "generic.h"
+
+
+static const struct of_device_id irq_of_match[] __initconst = {
+ { .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
+ { /*sentinel*/ }
+};
+
+static void __init at91rm9200_dt_init_irq(void)
+{
+ of_irq_init(irq_of_match);
+}
+
+static void __init at91rm9200_dt_device_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *at91rm9200_dt_board_compat[] __initdata = {
+ "atmel,at91rm9200",
+ NULL
+};
+
+DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
+ .timer = &at91rm9200_timer,
+ .map_io = at91_map_io,
+ .handle_irq = at91_aic_handle_irq,
+ .init_early = at91rm9200_dt_initialize,
+ .init_irq = at91rm9200_dt_init_irq,
+ .init_machine = at91rm9200_dt_device_init,
+ .dt_compat = at91rm9200_dt_board_compat,
+MACHINE_END
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index b62f560e6c75..fc593d615e7d 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -20,6 +20,7 @@ extern void __init at91_init_sram(int bank, unsigned long base,
extern void __init at91rm9200_set_type(int type);
extern void __init at91_initialize(unsigned long main_clock);
extern void __init at91x40_initialize(unsigned long main_clock);
+extern void __init at91rm9200_dt_initialize(void);
extern void __init at91_dt_initialize(void);
/* Interrupts */
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index be42cf0e74bd..c5d7e1e9d757 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -23,8 +23,6 @@
#include <linux/io.h>
#include <linux/irqdomain.h>
#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_gpio.h>
#include <asm/mach/irq.h>
@@ -33,6 +31,8 @@
#include "generic.h"
+#define MAX_NB_GPIO_PER_BANK 32
+
struct at91_gpio_chip {
struct gpio_chip chip;
struct at91_gpio_chip *next; /* Bank sharing same clock */
@@ -46,6 +46,7 @@ struct at91_gpio_chip {
#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
+static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset);
static void at91_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip);
static void at91_gpiolib_set(struct gpio_chip *chip, unsigned offset, int val);
static int at91_gpiolib_get(struct gpio_chip *chip, unsigned offset);
@@ -55,26 +56,27 @@ static int at91_gpiolib_direction_input(struct gpio_chip *chip,
unsigned offset);
static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset);
-#define AT91_GPIO_CHIP(name, nr_gpio) \
+#define AT91_GPIO_CHIP(name) \
{ \
.chip = { \
.label = name, \
+ .request = at91_gpiolib_request, \
.direction_input = at91_gpiolib_direction_input, \
.direction_output = at91_gpiolib_direction_output, \
.get = at91_gpiolib_get, \
.set = at91_gpiolib_set, \
.dbg_show = at91_gpiolib_dbg_show, \
.to_irq = at91_gpiolib_to_irq, \
- .ngpio = nr_gpio, \
+ .ngpio = MAX_NB_GPIO_PER_BANK, \
}, \
}
static struct at91_gpio_chip gpio_chip[] = {
- AT91_GPIO_CHIP("pioA", 32),
- AT91_GPIO_CHIP("pioB", 32),
- AT91_GPIO_CHIP("pioC", 32),
- AT91_GPIO_CHIP("pioD", 32),
- AT91_GPIO_CHIP("pioE", 32),
+ AT91_GPIO_CHIP("pioA"),
+ AT91_GPIO_CHIP("pioB"),
+ AT91_GPIO_CHIP("pioC"),
+ AT91_GPIO_CHIP("pioD"),
+ AT91_GPIO_CHIP("pioE"),
};
static int gpio_banks;
@@ -89,7 +91,7 @@ static unsigned long at91_gpio_caps;
static inline void __iomem *pin_to_controller(unsigned pin)
{
- pin /= 32;
+ pin /= MAX_NB_GPIO_PER_BANK;
if (likely(pin < gpio_banks))
return gpio_chip[pin].regbase;
@@ -98,7 +100,7 @@ static inline void __iomem *pin_to_controller(unsigned pin)
static inline unsigned pin_to_mask(unsigned pin)
{
- return 1 << (pin % 32);
+ return 1 << (pin % MAX_NB_GPIO_PER_BANK);
}
@@ -713,80 +715,6 @@ postcore_initcall(at91_gpio_debugfs_init);
*/
static struct lock_class_key gpio_lock_class;
-#if defined(CONFIG_OF)
-static int at91_gpio_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct at91_gpio_chip *at91_gpio = h->host_data;
-
- irq_set_lockdep_class(virq, &gpio_lock_class);
-
- /*
- * Can use the "simple" and not "edge" handler since it's
- * shorter, and the AIC handles interrupts sanely.
- */
- irq_set_chip_and_handler(virq, &gpio_irqchip,
- handle_simple_irq);
- set_irq_flags(virq, IRQF_VALID);
- irq_set_chip_data(virq, at91_gpio);
-
- return 0;
-}
-
-static struct irq_domain_ops at91_gpio_ops = {
- .map = at91_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-int __init at91_gpio_of_irq_setup(struct device_node *node,
- struct device_node *parent)
-{
- struct at91_gpio_chip *prev = NULL;
- int alias_idx = of_alias_get_id(node, "gpio");
- struct at91_gpio_chip *at91_gpio = &gpio_chip[alias_idx];
-
- /* Setup proper .irq_set_type function */
- if (has_pio3())
- gpio_irqchip.irq_set_type = alt_gpio_irq_type;
- else
- gpio_irqchip.irq_set_type = gpio_irq_type;
-
- /* Disable irqs of this PIO controller */
- __raw_writel(~0, at91_gpio->regbase + PIO_IDR);
-
- /* Setup irq domain */
- at91_gpio->domain = irq_domain_add_linear(node, at91_gpio->chip.ngpio,
- &at91_gpio_ops, at91_gpio);
- if (!at91_gpio->domain)
- panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
- at91_gpio->pioc_idx);
-
- /* Setup chained handler */
- if (at91_gpio->pioc_idx)
- prev = &gpio_chip[at91_gpio->pioc_idx - 1];
-
- /* The toplevel handler handles one bank of GPIOs, except
- * on some SoC it can handles up to three...
- * We only set up the handler for the first of the list.
- */
- if (prev && prev->next == at91_gpio)
- return 0;
-
- at91_gpio->pioc_virq = irq_create_mapping(irq_find_host(parent),
- at91_gpio->pioc_hwirq);
- irq_set_chip_data(at91_gpio->pioc_virq, at91_gpio);
- irq_set_chained_handler(at91_gpio->pioc_virq, gpio_irq_handler);
-
- return 0;
-}
-#else
-int __init at91_gpio_of_irq_setup(struct device_node *node,
- struct device_node *parent)
-{
- return -EINVAL;
-}
-#endif
-
/*
* irqdomain initialization: pile up irqdomains on top of AIC range
*/
@@ -862,6 +790,16 @@ void __init at91_gpio_irq_setup(void)
}
/* gpiolib support */
+static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ unsigned mask = 1 << offset;
+
+ __raw_writel(mask, pio + PIO_PER);
+ return 0;
+}
+
static int at91_gpiolib_direction_input(struct gpio_chip *chip,
unsigned offset)
{
@@ -975,81 +913,11 @@ err:
return -EINVAL;
}
-#ifdef CONFIG_OF_GPIO
-static void __init of_at91_gpio_init_one(struct device_node *np)
-{
- int alias_idx;
- struct at91_gpio_chip *at91_gpio;
-
- if (!np)
- return;
-
- alias_idx = of_alias_get_id(np, "gpio");
- if (alias_idx >= MAX_GPIO_BANKS) {
- pr_err("at91_gpio, failed alias idx(%d) > MAX_GPIO_BANKS(%d), ignoring.\n",
- alias_idx, MAX_GPIO_BANKS);
- return;
- }
-
- at91_gpio = &gpio_chip[alias_idx];
- at91_gpio->chip.base = alias_idx * at91_gpio->chip.ngpio;
-
- at91_gpio->regbase = of_iomap(np, 0);
- if (!at91_gpio->regbase) {
- pr_err("at91_gpio.%d, failed to map registers, ignoring.\n",
- alias_idx);
- return;
- }
-
- /* Get the interrupts property */
- if (of_property_read_u32(np, "interrupts", &at91_gpio->pioc_hwirq)) {
- pr_err("at91_gpio.%d, failed to get interrupts property, ignoring.\n",
- alias_idx);
- goto ioremap_err;
- }
-
- /* Get capabilities from compatibility property */
- if (of_device_is_compatible(np, "atmel,at91sam9x5-gpio"))
- at91_gpio_caps |= AT91_GPIO_CAP_PIO3;
-
- /* Setup clock */
- if (at91_gpio_setup_clk(alias_idx))
- goto ioremap_err;
-
- at91_gpio->chip.of_node = np;
- gpio_banks = max(gpio_banks, alias_idx + 1);
- at91_gpio->pioc_idx = alias_idx;
- return;
-
-ioremap_err:
- iounmap(at91_gpio->regbase);
-}
-
-static int __init of_at91_gpio_init(void)
-{
- struct device_node *np = NULL;
-
- /*
- * This isn't ideal, but it gets things hooked up until this
- * driver is converted into a platform_device
- */
- for_each_compatible_node(np, NULL, "atmel,at91rm9200-gpio")
- of_at91_gpio_init_one(np);
-
- return gpio_banks > 0 ? 0 : -EINVAL;
-}
-#else
-static int __init of_at91_gpio_init(void)
-{
- return -EINVAL;
-}
-#endif
-
static void __init at91_gpio_init_one(int idx, u32 regbase, int pioc_hwirq)
{
struct at91_gpio_chip *at91_gpio = &gpio_chip[idx];
- at91_gpio->chip.base = idx * at91_gpio->chip.ngpio;
+ at91_gpio->chip.base = idx * MAX_NB_GPIO_PER_BANK;
at91_gpio->pioc_hwirq = pioc_hwirq;
at91_gpio->pioc_idx = idx;
@@ -1079,11 +947,11 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
BUG_ON(nr_banks > MAX_GPIO_BANKS);
- if (of_at91_gpio_init() < 0) {
- /* No GPIO controller found in device tree */
- for (i = 0; i < nr_banks; i++)
- at91_gpio_init_one(i, data[i].regbase, data[i].id);
- }
+ if (of_have_populated_dt())
+ return;
+
+ for (i = 0; i < nr_banks; i++)
+ at91_gpio_init_one(i, data[i].regbase, data[i].id);
for (i = 0; i < gpio_banks; i++) {
at91_gpio = &gpio_chip[i];
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 0b32c81730a5..19cdd0b5b391 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -10,6 +10,7 @@
#include <linux/mm.h>
#include <linux/pm.h>
#include <linux/of_address.h>
+#include <linux/pinctrl/machine.h>
#include <asm/system_misc.h>
#include <asm/mach/map.h>
@@ -338,6 +339,7 @@ static void at91_dt_rstc(void)
}
static struct of_device_id ramc_ids[] = {
+ { .compatible = "atmel,at91rm9200-sdramc" },
{ .compatible = "atmel,at91sam9260-sdramc" },
{ .compatible = "atmel,at91sam9g45-ddramc" },
{ /*sentinel*/ }
@@ -436,6 +438,19 @@ end:
of_node_put(np);
}
+void __init at91rm9200_dt_initialize(void)
+{
+ at91_dt_ramc();
+
+ /* Init clock subsystem */
+ at91_dt_clock_init();
+
+ /* Register the processor-specific clocks */
+ at91_boot_soc.register_clocks();
+
+ at91_boot_soc.init();
+}
+
void __init at91_dt_initialize(void)
{
at91_dt_rstc();
@@ -448,7 +463,8 @@ void __init at91_dt_initialize(void)
/* Register the processor-specific clocks */
at91_boot_soc.register_clocks();
- at91_boot_soc.init();
+ if (at91_boot_soc.init)
+ at91_boot_soc.init();
}
#endif
@@ -463,4 +479,6 @@ void __init at91_initialize(unsigned long main_clock)
at91_boot_soc.register_clocks();
at91_boot_soc.init();
+
+ pinctrl_provide_dummies();
}
diff --git a/arch/arm/mach-at91/soc.h b/arch/arm/mach-at91/soc.h
index a9cfeb153719..9c6d3d4f9a23 100644
--- a/arch/arm/mach-at91/soc.h
+++ b/arch/arm/mach-at91/soc.h
@@ -5,6 +5,7 @@
*/
struct at91_init_soc {
+ int builtin;
unsigned int *default_irq_priority;
void (*map_io)(void);
void (*ioremap_registers)(void);
@@ -22,9 +23,18 @@ extern struct at91_init_soc at91sam9rl_soc;
extern struct at91_init_soc at91sam9x5_soc;
extern struct at91_init_soc at91sam9n12_soc;
+#define AT91_SOC_START(_name) \
+struct at91_init_soc __initdata at91##_name##_soc \
+ __used \
+ = { \
+ .builtin = 1, \
+
+#define AT91_SOC_END \
+};
+
static inline int at91_soc_is_enabled(void)
{
- return at91_boot_soc.init != NULL;
+ return at91_boot_soc.builtin;
}
#if !defined(CONFIG_SOC_AT91RM9200)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-17 06:47:11 +0300