[ARM] 5572/1: at91: Support for at91sam9g45 series: core chip & board support

Here are the at91 specific files dedicated to the at91sam9g45 series. They
mimic the traditional at91 way of managing chips & boards.

The first board that embeds at91sam9g45 chip is the AT91SAM9G45-EKES. In
the future, the main board for this 9g45 series will be the
AT91SAM9M10G45-EK (I choose this last name for the board file).

Simple drivers are enabled in _devices and board- files. Newer peripheral
support will be added in future patches.

Incuded peripherals support (for now):
- USART
- SPI
- Ethernet
- NAND flash
- LCD
- gpio/joystick/buttons
- leds and pwm

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 389 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
new file mode 100644
index 000000000000..b8558eae5229
--- /dev/null
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -0,0 +1,389 @@
+/*
+ *  Board-specific setup code for the AT91SAM9M10G45 Evaluation Kit family
+ *
+ *  Covers: * AT91SAM9G45-EKES  board
+ *          * AT91SAM9M10G45-EK board
+ *
+ *  Copyright (C) 2009 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/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/fb.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/leds.h>
+#include <linux/clk.h>
+
+#include <mach/hardware.h>
+#include <video/atmel_lcdc.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/board.h>
+#include <mach/gpio.h>
+#include <mach/at91sam9_smc.h>
+#include <mach/at91_shdwc.h>
+
+#include "sam9_smc.h"
+#include "generic.h"
+
+
+static void __init ek_map_io(void)
+{
+        /* Initialize processor: 12.000 MHz crystal */
+        at91sam9g45_initialize(12000000);
+
+        /* DGBU on ttyS0. (Rx & Tx only) */
+        at91_register_uart(0, 0, 0);
+
+        /* USART0 not connected on the -EK board */
+        /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
+        at91_register_uart(AT91SAM9G45_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
+
+        /* set serial console to ttyS0 (ie, DBGU) */
+        at91_set_serial_console(0);
+}
+
+static void __init ek_init_irq(void)
+{
+        at91sam9g45_init_interrupts(NULL);
+}
+
+
+/*
+ * USB HS Host port (common to OHCI & EHCI)
+ */
+static struct at91_usbh_data __initdata ek_usbh_hs_data = {
+        .ports          = 2,
+        .vbus_pin       = {AT91_PIN_PD1, AT91_PIN_PD3},
+};
+
+
+/*
+ * USB HS Device port
+ */
+static struct usba_platform_data __initdata ek_usba_udc_data = {
+        .vbus_pin       = AT91_PIN_PB19,
+};
+
+
+/*
+ * SPI devices.
+ */
+static struct spi_board_info ek_spi_devices[] = {
+        {       /* DataFlash chip */
+                .modalias       = "mtd_dataflash",
+                .chip_select    = 0,
+                .max_speed_hz   = 15 * 1000 * 1000,
+                .bus_num        = 0,
+        },
+};
+
+
+/*
+ * MACB Ethernet device
+ */
+static struct at91_eth_data __initdata ek_macb_data = {
+        .phy_irq_pin    = AT91_PIN_PD5,
+        .is_rmii        = 1,
+};
+
+
+/*
+ * NAND flash
+ */
+static struct mtd_partition __initdata ek_nand_partition[] = {
+        {
+                .name   = "Partition 1",
+                .offset = 0,
+                .size   = SZ_64M,
+        },
+        {
+                .name   = "Partition 2",
+                .offset = MTDPART_OFS_NXTBLK,
+                .size   = MTDPART_SIZ_FULL,
+        },
+};
+
+static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
+{
+        *num_partitions = ARRAY_SIZE(ek_nand_partition);
+        return ek_nand_partition;
+}
+
+/* det_pin is not connected */
+static struct atmel_nand_data __initdata ek_nand_data = {
+        .ale            = 21,
+        .cle            = 22,
+        .rdy_pin        = AT91_PIN_PC8,
+        .enable_pin     = AT91_PIN_PC14,
+        .partition_info = nand_partitions,
+#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
+        .bus_width_16   = 1,
+#else
+        .bus_width_16   = 0,
+#endif
+};
+
+static struct sam9_smc_config __initdata ek_nand_smc_config = {
+        .ncs_read_setup         = 0,
+        .nrd_setup              = 2,
+        .ncs_write_setup        = 0,
+        .nwe_setup              = 2,
+
+        .ncs_read_pulse         = 4,
+        .nrd_pulse              = 4,
+        .ncs_write_pulse        = 4,
+        .nwe_pulse              = 4,
+
+        .read_cycle             = 7,
+        .write_cycle            = 7,
+
+        .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
+        .tdf_cycles             = 3,
+};
+
+static void __init ek_add_device_nand(void)
+{
+        /* setup bus-width (8 or 16) */
+        if (ek_nand_data.bus_width_16)
+                ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
+        else
+                ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
+
+        /* configure chip-select 3 (NAND) */
+        sam9_smc_configure(3, &ek_nand_smc_config);
+
+        at91_add_device_nand(&ek_nand_data);
+}
+
+
+/*
+ * LCD Controller
+ */
+#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
+static struct fb_videomode at91_tft_vga_modes[] = {
+        {
+                .name           = "LG",
+                .refresh        = 60,
+                .xres           = 480,          .yres           = 272,
+                .pixclock       = KHZ2PICOS(9000),
+
+                .left_margin    = 1,            .right_margin   = 1,
+                .upper_margin   = 40,           .lower_margin   = 1,
+                .hsync_len      = 45,           .vsync_len      = 1,
+
+                .sync           = 0,
+                .vmode          = FB_VMODE_NONINTERLACED,
+        },
+};
+
+static struct fb_monspecs at91fb_default_monspecs = {
+        .manufacturer   = "LG",
+        .monitor        = "LB043WQ1",
+
+        .modedb         = at91_tft_vga_modes,
+        .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
+        .hfmin          = 15000,
+        .hfmax          = 17640,
+        .vfmin          = 57,
+        .vfmax          = 67,
+};
+
+#define AT91SAM9G45_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
+                                        | ATMEL_LCDC_DISTYPE_TFT \
+                                        | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
+
+/* Driver datas */
+static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
+        .lcdcon_is_backlight            = true,
+        .default_bpp                    = 32,
+        .default_dmacon                 = ATMEL_LCDC_DMAEN,
+        .default_lcdcon2                = AT91SAM9G45_DEFAULT_LCDCON2,
+        .default_monspecs               = &at91fb_default_monspecs,
+        .guard_time                     = 9,
+        .lcd_wiring_mode                = ATMEL_LCDC_WIRING_RGB,
+};
+
+#else
+static struct atmel_lcdfb_info __initdata ek_lcdc_data;
+#endif
+
+
+/*
+ * GPIO Buttons
+ */
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+static struct gpio_keys_button ek_buttons[] = {
+        {       /* BP1, "leftclic" */
+                .code           = BTN_LEFT,
+                .gpio           = AT91_PIN_PB6,
+                .active_low     = 1,
+                .desc           = "left_click",
+                .wakeup         = 1,
+        },
+        {       /* BP2, "rightclic" */
+                .code           = BTN_RIGHT,
+                .gpio           = AT91_PIN_PB7,
+                .active_low     = 1,
+                .desc           = "right_click",
+                .wakeup         = 1,
+        },
+                /* BP3, "joystick" */
+        {
+                .code           = KEY_LEFT,
+                .gpio           = AT91_PIN_PB14,
+                .active_low     = 1,
+                .desc           = "Joystick Left",
+        },
+        {
+                .code           = KEY_RIGHT,
+                .gpio           = AT91_PIN_PB15,
+                .active_low     = 1,
+                .desc           = "Joystick Right",
+        },
+        {
+                .code           = KEY_UP,
+                .gpio           = AT91_PIN_PB16,
+                .active_low     = 1,
+                .desc           = "Joystick Up",
+        },
+        {
+                .code           = KEY_DOWN,
+                .gpio           = AT91_PIN_PB17,
+                .active_low     = 1,
+                .desc           = "Joystick Down",
+        },
+        {
+                .code           = KEY_ENTER,
+                .gpio           = AT91_PIN_PB18,
+                .active_low     = 1,
+                .desc           = "Joystick Press",
+        },
+};
+
+static struct gpio_keys_platform_data ek_button_data = {
+        .buttons        = ek_buttons,
+        .nbuttons       = ARRAY_SIZE(ek_buttons),
+};
+
+static struct platform_device ek_button_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .num_resources  = 0,
+        .dev            = {
+                .platform_data  = &ek_button_data,
+        }
+};
+
+static void __init ek_add_device_buttons(void)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(ek_buttons); i++) {
+                at91_set_GPIO_periph(ek_buttons[i].gpio, 1);
+                at91_set_deglitch(ek_buttons[i].gpio, 1);
+        }
+
+        platform_device_register(&ek_button_device);
+}
+#else
+static void __init ek_add_device_buttons(void) {}
+#endif
+
+
+/*
+ * LEDs ... these could all be PWM-driven, for variable brightness
+ */
+static struct gpio_led ek_leds[] = {
+        {       /* "top" led, red, powerled */
+                .name                   = "d8",
+                .gpio                   = AT91_PIN_PD30,
+                .default_trigger        = "heartbeat",
+        },
+        {       /* "left" led, green, userled2, pwm3 */
+                .name                   = "d6",
+                .gpio                   = AT91_PIN_PD0,
+                .active_low             = 1,
+                .default_trigger        = "nand-disk",
+        },
+#if !(defined(CONFIG_LEDS_ATMEL_PWM) || defined(CONFIG_LEDS_ATMEL_PWM_MODULE))
+        {       /* "right" led, green, userled1, pwm1 */
+                .name                   = "d7",
+                .gpio                   = AT91_PIN_PD31,
+                .active_low             = 1,
+                .default_trigger        = "mmc0",
+        },
+#endif
+};
+
+
+/*
+ * PWM Leds
+ */
+static struct gpio_led ek_pwm_led[] = {
+#if defined(CONFIG_LEDS_ATMEL_PWM) || defined(CONFIG_LEDS_ATMEL_PWM_MODULE)
+        {       /* "right" led, green, userled1, pwm1 */
+                .name                   = "d7",
+                .gpio                   = 1,    /* is PWM channel number */
+                .active_low             = 1,
+                .default_trigger        = "none",
+        },
+#endif
+};
+
+
+
+static void __init ek_board_init(void)
+{
+        /* Serial */
+        at91_add_device_serial();
+        /* USB HS Host */
+        at91_add_device_usbh_ohci(&ek_usbh_hs_data);
+        /* USB HS Device */
+        at91_add_device_usba(&ek_usba_udc_data);
+        /* SPI */
+        at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
+        /* Ethernet */
+        at91_add_device_eth(&ek_macb_data);
+        /* NAND */
+        ek_add_device_nand();
+        /* I2C */
+        at91_add_device_i2c(0, NULL, 0);
+        /* LCD Controller */
+        at91_add_device_lcdc(&ek_lcdc_data);
+        /* Push Buttons */
+        ek_add_device_buttons();
+        /* LEDs */
+        at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+        at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
+}
+
+MACHINE_START(AT91SAM9G45EKES, "Atmel AT91SAM9G45-EKES")
+        /* Maintainer: Atmel */
+        .phys_io        = AT91_BASE_SYS,
+        .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+        .boot_params    = AT91_SDRAM_BASE + 0x100,
+        .timer          = &at91sam926x_timer,
+        .map_io         = ek_map_io,
+        .init_irq       = ek_init_irq,
+        .init_machine   = ek_board_init,
+MACHINE_END