1 files changed, 297 insertions, 0 deletions

diff --git a/arch/avr32/boards/merisc/setup.c b/arch/avr32/boards/merisc/setup.c
new file mode 100644
index 000000000000..20b300cf105a
--- /dev/null
+++ b/arch/avr32/boards/merisc/setup.c
@@ -0,0 +1,297 @@
+/*
+ * Board-specific setup code for the Merisc
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/etherdevice.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/leds.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+#include <linux/irq.h>
+#include <linux/fb.h>
+#include <linux/atmel-mci.h>
+
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/gpio.h>
+
+#include <mach/at32ap700x.h>
+#include <mach/board.h>
+#include <mach/init.h>
+#include <mach/portmux.h>
+
+#include "merisc.h"
+
+/* Holds the autodetected board model and revision */
+static int merisc_board_id;
+
+/* Initialized by bootloader-specific startup code. */
+struct tag *bootloader_tags __initdata;
+
+/* Oscillator frequencies. These are board specific */
+unsigned long at32_board_osc_rates[3] = {
+        [0]     = 32768,        /* 32.768 kHz on RTC osc */
+        [1]     = 20000000,     /* 20 MHz on osc0 */
+        [2]     = 12000000,     /* 12 MHz on osc1 */
+};
+
+struct eth_addr {
+        u8 addr[6];
+};
+
+static struct eth_addr __initdata hw_addr[2];
+static struct eth_platform_data __initdata eth_data[2];
+
+static int ads7846_get_pendown_state_PB26(void)
+{
+        return !gpio_get_value(GPIO_PIN_PB(26));
+}
+
+static int ads7846_get_pendown_state_PB28(void)
+{
+        return !gpio_get_value(GPIO_PIN_PB(28));
+}
+
+static struct ads7846_platform_data __initdata ads7846_data = {
+        .model                          = 7846,
+        .vref_delay_usecs               = 100,
+        .vref_mv                        = 0,
+        .keep_vref_on                   = 0,
+        .settle_delay_usecs             = 150,
+        .penirq_recheck_delay_usecs     = 1,
+        .x_plate_ohms                   = 800,
+        .debounce_rep                   = 4,
+        .debounce_max                   = 10,
+        .debounce_tol                   = 50,
+        .get_pendown_state              = ads7846_get_pendown_state_PB26,
+        .filter_init                    = NULL,
+        .filter                         = NULL,
+        .filter_cleanup                 = NULL,
+};
+
+static struct spi_board_info __initdata spi0_board_info[] = {
+        {
+                .modalias       = "ads7846",
+                .max_speed_hz   = 3250000,
+                .chip_select    = 0,
+                .bus_num        = 0,
+                .platform_data  = &ads7846_data,
+                .mode           = SPI_MODE_0,
+        },
+};
+
+static struct mci_platform_data __initdata mci0_data = {
+        .slot[0] = {
+                .bus_width      = 4,
+                .detect_pin     = GPIO_PIN_PE(19),
+                .wp_pin         = GPIO_PIN_PE(20),
+        },
+};
+
+static int __init parse_tag_ethernet(struct tag *tag)
+{
+        int i;
+
+        i = tag->u.ethernet.mac_index;
+        if (i < ARRAY_SIZE(hw_addr)) {
+                memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
+                       sizeof(hw_addr[i].addr));
+        }
+
+        return 0;
+}
+__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
+
+static void __init set_hw_addr(struct platform_device *pdev)
+{
+        struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        const u8 *addr;
+        void __iomem *regs;
+        struct clk *pclk;
+
+        if (!res)
+                return;
+
+        if (pdev->id >= ARRAY_SIZE(hw_addr))
+                return;
+
+        addr = hw_addr[pdev->id].addr;
+        if (!is_valid_ether_addr(addr))
+                return;
+
+        regs = (void __iomem __force *)res->start;
+        pclk = clk_get(&pdev->dev, "pclk");
+        if (!pclk)
+                return;
+
+        clk_enable(pclk);
+        __raw_writel((addr[3] << 24) | (addr[2] << 16)
+                     | (addr[1] << 8) | addr[0], regs + 0x98);
+        __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
+        clk_disable(pclk);
+        clk_put(pclk);
+}
+
+static struct i2c_gpio_platform_data i2c_gpio_data = {
+        .sda_pin                = GPIO_PIN_PA(6),
+        .scl_pin                = GPIO_PIN_PA(7),
+        .sda_is_open_drain      = 1,
+        .scl_is_open_drain      = 1,
+        .udelay                 = 2,
+};
+
+static struct platform_device i2c_gpio_device = {
+        .name   = "i2c-gpio",
+        .id     = 0,
+        .dev    = {
+                .platform_data  = &i2c_gpio_data,
+        },
+};
+
+static struct i2c_board_info __initdata i2c_info[] = {
+        {
+                I2C_BOARD_INFO("pcf8563", 0x51)
+        },
+};
+
+#ifdef CONFIG_LEDS_ATMEL_PWM
+static struct gpio_led stk_pwm_led[] = {
+        {
+                .name   = "backlight",
+                .gpio   = 0,            /* PWM channel 0 (LCD backlight) */
+        },
+};
+
+static struct gpio_led_platform_data stk_pwm_led_data = {
+        .num_leds       = ARRAY_SIZE(stk_pwm_led),
+        .leds           = stk_pwm_led,
+};
+
+static struct platform_device stk_pwm_led_dev = {
+        .name   = "leds-atmel-pwm",
+        .id     = -1,
+        .dev    = {
+                .platform_data  = &stk_pwm_led_data,
+        },
+};
+#endif
+
+const char *merisc_model(void)
+{
+        switch (merisc_board_id) {
+        case 0:
+        case 1:
+                return "500-01";
+        case 2:
+                return "BT";
+        default:
+                return "Unknown";
+        }
+}
+
+const char *merisc_revision(void)
+{
+        switch (merisc_board_id) {
+        case 0:
+                return "B";
+        case 1:
+                return "D";
+        case 2:
+                return "A";
+        default:
+                return "Unknown";
+        }
+}
+
+static void detect_merisc_board_id(void)
+{
+        /* Board ID pins MUST be set as input or the board may be damaged */
+        at32_select_gpio(GPIO_PIN_PA(24), AT32_GPIOF_PULLUP);
+        at32_select_gpio(GPIO_PIN_PA(25), AT32_GPIOF_PULLUP);
+        at32_select_gpio(GPIO_PIN_PA(26), AT32_GPIOF_PULLUP);
+        at32_select_gpio(GPIO_PIN_PA(27), AT32_GPIOF_PULLUP);
+
+        merisc_board_id = !gpio_get_value(GPIO_PIN_PA(24)) +
+                !gpio_get_value(GPIO_PIN_PA(25)) * 2 +
+                !gpio_get_value(GPIO_PIN_PA(26)) * 4 +
+                !gpio_get_value(GPIO_PIN_PA(27)) * 8;
+}
+
+void __init setup_board(void)
+{
+        at32_map_usart(0, 0, 0);
+        at32_map_usart(1, 1, 0);
+        at32_map_usart(3, 3, 0);
+        at32_setup_serial_console(1);
+}
+
+static int __init merisc_init(void)
+{
+        detect_merisc_board_id();
+
+        printk(KERN_NOTICE "BOARD: Merisc %s revision %s\n", merisc_model(),
+               merisc_revision());
+
+        /* Reserve pins for SDRAM */
+        at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL | (1 << 26));
+
+        if (merisc_board_id >= 1)
+                at32_map_usart(2, 2, 0);
+
+        at32_add_device_usart(0);
+        at32_add_device_usart(1);
+        if (merisc_board_id >= 1)
+                at32_add_device_usart(2);
+        at32_add_device_usart(3);
+        set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
+
+        /* ADS7846 PENIRQ */
+        if (merisc_board_id == 0) {
+                ads7846_data.get_pendown_state = ads7846_get_pendown_state_PB26;
+                at32_select_periph(GPIO_PIOB_BASE, 1 << 26,
+                                   GPIO_PERIPH_A, AT32_GPIOF_PULLUP);
+                spi0_board_info[0].irq = AT32_EXTINT(1);
+        } else {
+                ads7846_data.get_pendown_state = ads7846_get_pendown_state_PB28;
+                at32_select_periph(GPIO_PIOB_BASE, 1 << 28, GPIO_PERIPH_A,
+                                   AT32_GPIOF_PULLUP);
+                spi0_board_info[0].irq = AT32_EXTINT(3);
+        }
+
+        /* ADS7846 busy pin */
+        at32_select_gpio(GPIO_PIN_PA(4), AT32_GPIOF_PULLUP);
+
+        at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+
+        at32_add_device_mci(0, &mci0_data);
+
+#ifdef CONFIG_LEDS_ATMEL_PWM
+        at32_add_device_pwm((1 << 0) | (1 << 2));
+        platform_device_register(&stk_pwm_led_dev);
+#else
+        at32_add_device_pwm((1 << 2));
+#endif
+
+        at32_select_gpio(i2c_gpio_data.sda_pin,
+                AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+        at32_select_gpio(i2c_gpio_data.scl_pin,
+                AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+        platform_device_register(&i2c_gpio_device);
+
+        i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
+
+        return 0;
+}
+postcore_initcall(merisc_init);