[ARM] 4370/3: AT91: Support for Atmel AT91SAM9RL processors.
Add support for Atmel's new AT91SAM9RL range of processors.
Includes similar peripherals as other AT91SAM9 processors, but with a
High-speed USB controller and various sizes of internal SRAM.
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
new file mode 100644
index 0000000..4813a35
--- /dev/null
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -0,0 +1,341 @@
+/*
+ * arch/arm/mach-at91/at91sam9rl.c
+ *
+ * Copyright (C) 2005 SAN People
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/at91sam9rl.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+
+#include "generic.h"
+#include "clock.h"
+
+static struct map_desc at91sam9rl_io_desc[] __initdata = {
+ {
+ .virtual = AT91_VA_BASE_SYS,
+ .pfn = __phys_to_pfn(AT91_BASE_SYS),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc at91sam9rl_sram_desc[] __initdata = {
+ {
+ .pfn = __phys_to_pfn(AT91SAM9RL_SRAM_BASE),
+ .type = MT_DEVICE,
+ }
+};
+
+/* --------------------------------------------------------------------
+ * Clocks
+ * -------------------------------------------------------------------- */
+
+/*
+ * The peripheral clocks.
+ */
+static struct clk pioA_clk = {
+ .name = "pioA_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_PIOA,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioB_clk = {
+ .name = "pioB_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_PIOB,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioC_clk = {
+ .name = "pioC_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_PIOC,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioD_clk = {
+ .name = "pioD_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_PIOD,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart0_clk = {
+ .name = "usart0_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_US0,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart1_clk = {
+ .name = "usart1_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_US1,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart2_clk = {
+ .name = "usart2_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_US2,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart3_clk = {
+ .name = "usart3_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_US3,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk mmc_clk = {
+ .name = "mci_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_MCI,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk twi0_clk = {
+ .name = "twi0_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TWI0,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk twi1_clk = {
+ .name = "twi1_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TWI1,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk spi_clk = {
+ .name = "spi_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_SPI,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc0_clk = {
+ .name = "ssc0_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_SSC0,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc1_clk = {
+ .name = "ssc1_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_SSC1,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc0_clk = {
+ .name = "tc0_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TC0,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc1_clk = {
+ .name = "tc1_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TC1,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc2_clk = {
+ .name = "tc2_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TC2,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pwmc_clk = {
+ .name = "pwmc_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_PWMC,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk tsc_clk = {
+ .name = "tsc_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_TSC,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk dma_clk = {
+ .name = "dma_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_DMA,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk udphs_clk = {
+ .name = "udphs_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_UDPHS,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk lcdc_clk = {
+ .name = "lcdc_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_LCDC,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+static struct clk ac97_clk = {
+ .name = "ac97_clk",
+ .pmc_mask = 1 << AT91SAM9RL_ID_AC97C,
+ .type = CLK_TYPE_PERIPHERAL,
+};
+
+static struct clk *periph_clocks[] __initdata = {
+ &pioA_clk,
+ &pioB_clk,
+ &pioC_clk,
+ &pioD_clk,
+ &usart0_clk,
+ &usart1_clk,
+ &usart2_clk,
+ &usart3_clk,
+ &mmc_clk,
+ &twi0_clk,
+ &twi1_clk,
+ &spi_clk,
+ &ssc0_clk,
+ &ssc1_clk,
+ &tc0_clk,
+ &tc1_clk,
+ &tc2_clk,
+ &pwmc_clk,
+ &tsc_clk,
+ &dma_clk,
+ &udphs_clk,
+ &lcdc_clk,
+ &ac97_clk,
+ // irq0
+};
+
+/*
+ * The two programmable clocks.
+ * You must configure pin multiplexing to bring these signals out.
+ */
+static struct clk pck0 = {
+ .name = "pck0",
+ .pmc_mask = AT91_PMC_PCK0,
+ .type = CLK_TYPE_PROGRAMMABLE,
+ .id = 0,
+};
+static struct clk pck1 = {
+ .name = "pck1",
+ .pmc_mask = AT91_PMC_PCK1,
+ .type = CLK_TYPE_PROGRAMMABLE,
+ .id = 1,
+};
+
+static void __init at91sam9rl_register_clocks(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
+ clk_register(periph_clocks[i]);
+
+ clk_register(&pck0);
+ clk_register(&pck1);
+}
+
+/* --------------------------------------------------------------------
+ * GPIO
+ * -------------------------------------------------------------------- */
+
+static struct at91_gpio_bank at91sam9rl_gpio[] = {
+ {
+ .id = AT91SAM9RL_ID_PIOA,
+ .offset = AT91_PIOA,
+ .clock = &pioA_clk,
+ }, {
+ .id = AT91SAM9RL_ID_PIOB,
+ .offset = AT91_PIOB,
+ .clock = &pioB_clk,
+ }, {
+ .id = AT91SAM9RL_ID_PIOC,
+ .offset = AT91_PIOC,
+ .clock = &pioC_clk,
+ }, {
+ .id = AT91SAM9RL_ID_PIOD,
+ .offset = AT91_PIOD,
+ .clock = &pioD_clk,
+ }
+};
+
+static void at91sam9rl_reset(void)
+{
+ at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
+}
+
+
+/* --------------------------------------------------------------------
+ * AT91SAM9RL processor initialization
+ * -------------------------------------------------------------------- */
+
+void __init at91sam9rl_initialize(unsigned long main_clock)
+{
+ unsigned long cidr, sram_size;
+
+ /* Map peripherals */
+ iotable_init(at91sam9rl_io_desc, ARRAY_SIZE(at91sam9rl_io_desc));
+
+ cidr = at91_sys_read(AT91_DBGU_CIDR);
+
+ switch (cidr & AT91_CIDR_SRAMSIZ) {
+ case AT91_CIDR_SRAMSIZ_32K:
+ sram_size = 2 * SZ_16K;
+ break;
+ case AT91_CIDR_SRAMSIZ_16K:
+ default:
+ sram_size = SZ_16K;
+ }
+
+ at91sam9rl_sram_desc->virtual = AT91_IO_VIRT_BASE - sram_size;
+ at91sam9rl_sram_desc->length = sram_size;
+
+ /* Map SRAM */
+ iotable_init(at91sam9rl_sram_desc, ARRAY_SIZE(at91sam9rl_sram_desc));
+
+ at91_arch_reset = at91sam9rl_reset;
+ at91_extern_irq = (1 << AT91SAM9RL_ID_IRQ0);
+
+ /* Init clock subsystem */
+ at91_clock_init(main_clock);
+
+ /* Register the processor-specific clocks */
+ at91sam9rl_register_clocks();
+
+ /* Register GPIO subsystem */
+ at91_gpio_init(at91sam9rl_gpio, 4);
+}
+
+/* --------------------------------------------------------------------
+ * Interrupt initialization
+ * -------------------------------------------------------------------- */
+
+/*
+ * The default interrupt priority levels (0 = lowest, 7 = highest).
+ */
+static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = {
+ 7, /* Advanced Interrupt Controller */
+ 7, /* System Peripherals */
+ 1, /* Parallel IO Controller A */
+ 1, /* Parallel IO Controller B */
+ 1, /* Parallel IO Controller C */
+ 1, /* Parallel IO Controller D */
+ 5, /* USART 0 */
+ 5, /* USART 1 */
+ 5, /* USART 2 */
+ 5, /* USART 3 */
+ 0, /* Multimedia Card Interface */
+ 6, /* Two-Wire Interface 0 */
+ 6, /* Two-Wire Interface 1 */
+ 5, /* Serial Peripheral Interface */
+ 4, /* Serial Synchronous Controller 0 */
+ 4, /* Serial Synchronous Controller 1 */
+ 0, /* Timer Counter 0 */
+ 0, /* Timer Counter 1 */
+ 0, /* Timer Counter 2 */
+ 0,
+ 0, /* Touch Screen Controller */
+ 0, /* DMA Controller */
+ 2, /* USB Device High speed port */
+ 2, /* LCD Controller */
+ 6, /* AC97 Controller */
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, /* Advanced Interrupt Controller */
+};
+
+void __init at91sam9rl_init_interrupts(unsigned int priority[NR_AIC_IRQS])
+{
+ if (!priority)
+ priority = at91sam9rl_default_irq_priority;
+
+ /* Initialize the AIC interrupt controller */
+ at91_aic_init(priority);
+
+ /* Enable GPIO interrupts */
+ at91_gpio_irq_setup();
+}