[ARM] 4145/2: AT91: Add support for AT91SAM9263 processor

Add support for the Atmel AT91SAM9263 processor.  It is similar to the
AT91SAM9260 but with more integrated peripherals, 5 GPIO banks, etc.

Original patch from Nicolas Ferre.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 313 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
new file mode 100644
index 000000000000..fae6a821a61b
--- /dev/null
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -0,0 +1,313 @@
+/*
+ * arch/arm/mach-at91/at91sam9263.c
+ *
+ *  Copyright (C) 2007 Atmel Corporation.
+ *
+ * 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/module.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/arch/at91sam9263.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+
+#include "generic.h"
+#include "clock.h"
+
+static struct map_desc at91sam9263_io_desc[] __initdata = {
+        {
+                .virtual        = AT91_VA_BASE_SYS,
+                .pfn            = __phys_to_pfn(AT91_BASE_SYS),
+                .length         = SZ_16K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
+                .pfn            = __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
+                .length         = AT91SAM9263_SRAM0_SIZE,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
+                .pfn            = __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
+                .length         = AT91SAM9263_SRAM1_SIZE,
+                .type           = MT_DEVICE,
+        },
+};
+
+/* --------------------------------------------------------------------
+ *  Clocks
+ * -------------------------------------------------------------------- */
+
+/*
+ * The peripheral clocks.
+ */
+static struct clk pioA_clk = {
+        .name           = "pioA_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioB_clk = {
+        .name           = "pioB_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioCDE_clk = {
+        .name           = "pioCDE_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart0_clk = {
+        .name           = "usart0_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_US0,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart1_clk = {
+        .name           = "usart1_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_US1,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart2_clk = {
+        .name           = "usart2_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_US2,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk mmc0_clk = {
+        .name           = "mci0_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk mmc1_clk = {
+        .name           = "mci1_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk twi_clk = {
+        .name           = "twi_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk spi0_clk = {
+        .name           = "spi0_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk spi1_clk = {
+        .name           = "spi1_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk tcb_clk = {
+        .name           = "tcb_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk ether_clk = {
+        .name           = "ether_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk udc_clk = {
+        .name           = "udc_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk isi_clk = {
+        .name           = "isi_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk lcdc_clk = {
+        .name           = "lcdc_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+static struct clk ohci_clk = {
+        .name           = "ohci_clk",
+        .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
+        .type           = CLK_TYPE_PERIPHERAL,
+};
+
+static struct clk *periph_clocks[] __initdata = {
+        &pioA_clk,
+        &pioB_clk,
+        &pioCDE_clk,
+        &usart0_clk,
+        &usart1_clk,
+        &usart2_clk,
+        &mmc0_clk,
+        &mmc1_clk,
+        // can
+        &twi_clk,
+        &spi0_clk,
+        &spi1_clk,
+        // ssc0 .. ssc1
+        // ac97
+        &tcb_clk,
+        // pwmc
+        &ether_clk,
+        // 2dge
+        &udc_clk,
+        &isi_clk,
+        &lcdc_clk,
+        // dma
+        &ohci_clk,
+        // irq0 .. irq1
+};
+
+/*
+ * The four 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 struct clk pck2 = {
+        .name           = "pck2",
+        .pmc_mask       = AT91_PMC_PCK2,
+        .type           = CLK_TYPE_PROGRAMMABLE,
+        .id             = 2,
+};
+static struct clk pck3 = {
+        .name           = "pck3",
+        .pmc_mask       = AT91_PMC_PCK3,
+        .type           = CLK_TYPE_PROGRAMMABLE,
+        .id             = 3,
+};
+
+static void __init at91sam9263_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);
+        clk_register(&pck2);
+        clk_register(&pck3);
+}
+
+/* --------------------------------------------------------------------
+ *  GPIO
+ * -------------------------------------------------------------------- */
+
+static struct at91_gpio_bank at91sam9263_gpio[] = {
+        {
+                .id             = AT91SAM9263_ID_PIOA,
+                .offset         = AT91_PIOA,
+                .clock          = &pioA_clk,
+        }, {
+                .id             = AT91SAM9263_ID_PIOB,
+                .offset         = AT91_PIOB,
+                .clock          = &pioB_clk,
+        }, {
+                .id             = AT91SAM9263_ID_PIOCDE,
+                .offset         = AT91_PIOC,
+                .clock          = &pioCDE_clk,
+        }, {
+                .id             = AT91SAM9263_ID_PIOCDE,
+                .offset         = AT91_PIOD,
+                .clock          = &pioCDE_clk,
+        }, {
+                .id             = AT91SAM9263_ID_PIOCDE,
+                .offset         = AT91_PIOE,
+                .clock          = &pioCDE_clk,
+        }
+};
+
+static void at91sam9263_reset(void)
+{
+        at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
+}
+
+
+/* --------------------------------------------------------------------
+ *  AT91SAM9263 processor initialization
+ * -------------------------------------------------------------------- */
+
+void __init at91sam9263_initialize(unsigned long main_clock)
+{
+        /* Map peripherals */
+        iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
+
+        at91_arch_reset = at91sam9263_reset;
+        at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
+
+        /* Init clock subsystem */
+        at91_clock_init(main_clock);
+
+        /* Register the processor-specific clocks */
+        at91sam9263_register_clocks();
+
+        /* Register GPIO subsystem */
+        at91_gpio_init(at91sam9263_gpio, 5);
+}
+
+/* --------------------------------------------------------------------
+ *  Interrupt initialization
+ * -------------------------------------------------------------------- */
+
+/*
+ * The default interrupt priority levels (0 = lowest, 7 = highest).
+ */
+static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
+        7,      /* Advanced Interrupt Controller (FIQ) */
+        7,      /* System Peripherals */
+        0,      /* Parallel IO Controller A */
+        0,      /* Parallel IO Controller B */
+        0,      /* Parallel IO Controller C, D and E */
+        0,
+        0,
+        6,      /* USART 0 */
+        6,      /* USART 1 */
+        6,      /* USART 2 */
+        0,      /* Multimedia Card Interface 0 */
+        0,      /* Multimedia Card Interface 1 */
+        4,      /* CAN */
+        0,      /* Two-Wire Interface */
+        6,      /* Serial Peripheral Interface 0 */
+        6,      /* Serial Peripheral Interface 1 */
+        5,      /* Serial Synchronous Controller 0 */
+        5,      /* Serial Synchronous Controller 1 */
+        6,      /* AC97 Controller */
+        0,      /* Timer Counter 0, 1 and 2 */
+        0,      /* Pulse Width Modulation Controller */
+        3,      /* Ethernet */
+        0,
+        0,      /* 2D Graphic Engine */
+        3,      /* USB Device Port */
+        0,      /* Image Sensor Interface */
+        3,      /* LDC Controller */
+        0,      /* DMA Controller */
+        0,
+        3,      /* USB Host port */
+        0,      /* Advanced Interrupt Controller (IRQ0) */
+        0,      /* Advanced Interrupt Controller (IRQ1) */
+};
+
+void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
+{
+        if (!priority)
+                priority = at91sam9263_default_irq_priority;
+
+        /* Initialize the AIC interrupt controller */
+        at91_aic_init(priority);
+
+        /* Enable GPIO interrupts */
+        at91_gpio_irq_setup();
+}