/*
* 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_info 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_info __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);