diff options
Diffstat (limited to 'kernel/arch/avr32/boards/mimc200/setup.c')
| -rw-r--r-- | kernel/arch/avr32/boards/mimc200/setup.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/kernel/arch/avr32/boards/mimc200/setup.c b/kernel/arch/avr32/boards/mimc200/setup.c new file mode 100644 index 000000000..1cb8e9cc5 --- /dev/null +++ b/kernel/arch/avr32/boards/mimc200/setup.c @@ -0,0 +1,236 @@ +/* + * Board-specific setup code for the MIMC200 + * + * Copyright (C) 2008 Mercury IMC Ltd + * + * 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. + */ + +extern struct atmel_lcdfb_pdata mimc200_lcdc_data; + +#include <linux/clk.h> +#include <linux/etherdevice.h> +#include <linux/i2c-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/eeprom.h> + +#include <video/atmel_lcdc.h> +#include <linux/fb.h> + +#include <linux/atmel-mci.h> +#include <linux/io.h> +#include <asm/setup.h> + +#include <mach/at32ap700x.h> +#include <mach/board.h> +#include <mach/init.h> +#include <mach/portmux.h> + +/* Oscillator frequencies. These are board-specific */ +unsigned long at32_board_osc_rates[3] = { + [0] = 32768, /* 32.768 kHz on RTC osc */ + [1] = 10000000, /* 10 MHz on osc0 */ + [2] = 12000000, /* 12 MHz on osc1 */ +}; + +/* Initialized by bootloader-specific startup code. */ +struct tag *bootloader_tags __initdata; + +static struct fb_videomode __initdata pt0434827_modes[] = { + { + .name = "480x272 @ 72", + .refresh = 72, + .xres = 480, .yres = 272, + .pixclock = KHZ2PICOS(10000), + + .left_margin = 1, .right_margin = 1, + .upper_margin = 12, .lower_margin = 1, + .hsync_len = 42, .vsync_len = 1, + + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, + }, +}; + +static struct fb_monspecs __initdata mimc200_default_monspecs = { + .manufacturer = "PT", + .monitor = "PT0434827-A401", + .modedb = pt0434827_modes, + .modedb_len = ARRAY_SIZE(pt0434827_modes), + .hfmin = 14820, + .hfmax = 22230, + .vfmin = 60, + .vfmax = 85, + .dclkmax = 25200000, +}; + +struct atmel_lcdfb_pdata __initdata mimc200_lcdc_data = { + .default_bpp = 16, + .default_dmacon = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN, + .default_lcdcon2 = (ATMEL_LCDC_DISTYPE_TFT + | ATMEL_LCDC_INVCLK + | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE + | ATMEL_LCDC_MEMOR_BIG), + .default_monspecs = &mimc200_default_monspecs, + .guard_time = 2, +}; + +struct eth_addr { + u8 addr[6]; +}; +static struct eth_addr __initdata hw_addr[2]; +static struct macb_platform_data __initdata eth_data[2]; + +static struct spi_eeprom eeprom_25lc010 = { + .name = "25lc010", + .byte_len = 128, + .page_size = 16, + .flags = EE_ADDR1, +}; + +static struct spi_board_info spi0_board_info[] __initdata = { + { + .modalias = "rtc-ds1390", + .max_speed_hz = 4000000, + .chip_select = 2, + }, + { + .modalias = "at25", + .max_speed_hz = 1000000, + .chip_select = 1, + .mode = SPI_MODE_3, + .platform_data = &eeprom_25lc010, + }, +}; + +static struct mci_platform_data __initdata mci0_data = { + .slot[0] = { + .bus_width = 4, + .detect_pin = GPIO_PIN_PA(26), + .wp_pin = GPIO_PIN_PA(27), + }, +}; + +/* + * The next two functions should go away as the boot loader is + * supposed to initialize the macb address registers with a valid + * ethernet address. But we need to keep it around for a while until + * we can be reasonably sure the boot loader does this. + * + * The phy_id is ignored as the driver will probe for it. + */ +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; + + /* + * Since this is board-specific code, we'll cheat and use the + * physical address directly as we happen to know that it's + * the same as the virtual address. + */ + regs = (void __iomem __force *)res->start; + pclk = clk_get(&pdev->dev, "pclk"); + if (IS_ERR(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); +} + +void __init setup_board(void) +{ + at32_map_usart(0, 0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */ + at32_map_usart(1, 1, 0); /* USART 1: /dev/ttyS1 (RS232) */ + at32_map_usart(2, 2, 0); /* USART 2: /dev/ttyS2 (RS485) */ + at32_map_usart(3, 3, 0); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */ +} + +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, /* close to 100 kHz */ +}; + +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[] = { +}; + +static int __init mimc200_init(void) +{ + /* + * MIMC200 uses 16-bit SDRAM interface, so we don't need to + * reserve any pins for it. + */ + + at32_add_device_usart(0); + at32_add_device_usart(1); + at32_add_device_usart(2); + at32_add_device_usart(3); + + set_hw_addr(at32_add_device_eth(0, ð_data[0])); + set_hw_addr(at32_add_device_eth(1, ð_data[1])); + + at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); + at32_add_device_mci(0, &mci0_data); + at32_add_device_usba(0, NULL); + + at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP); + 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)); + + at32_add_device_lcdc(0, &mimc200_lcdc_data, + fbmem_start, fbmem_size, + ATMEL_LCDC_CONTROL | ATMEL_LCDC_ALT_CONTROL | ATMEL_LCDC_ALT_24B_DATA); + + return 0; +} +postcore_initcall(mimc200_init); |