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/*
* Board-specific setup code for the Miromico Hammerhead board
*
* Copyright (C) 2008 Miromico AG
*
* 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/fb.h>
#include <linux/etherdevice.h>
#include <linux/i2c.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/spi/spi.h>
#include <video/atmel_lcdc.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>
#include "../../mach-at32ap/clock.h"
#include "flash.h"
/* Oscillator frequencies. These are board-specific */
unsigned long at32_board_osc_rates[3] = {
[0] = 32768, /* 32.768 kHz on RTC osc */
[1] = 25000000, /* 25MHz on osc0 */
[2] = 12000000, /* 12 MHz on osc1 */
};
/* Initialized by bootloader-specific startup code. */
struct tag *bootloader_tags __initdata;
#ifdef CONFIG_BOARD_HAMMERHEAD_LCD
static struct fb_videomode __initdata hda350tlv_modes[] = {
{
.name = "320x240 @ 75",
.refresh = 75,
.xres = 320,
.yres = 240,
.pixclock = KHZ2PICOS(6891),
.left_margin = 48,
.right_margin = 18,
.upper_margin = 18,
.lower_margin = 4,
.hsync_len = 20,
.vsync_len = 2,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED,
},
};
static struct fb_monspecs __initdata hammerhead_hda350t_monspecs = {
.manufacturer = "HAN",
.monitor = "HDA350T-LV",
.modedb = hda350tlv_modes,
.modedb_len = ARRAY_SIZE(hda350tlv_modes),
.hfmin = 14900,
.hfmax = 22350,
.vfmin = 60,
.vfmax = 90,
.dclkmax = 10000000,
};
struct atmel_lcdfb_info __initdata hammerhead_lcdc_data = {
.default_bpp = 24,
.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 = &hammerhead_hda350t_monspecs,
.guard_time = 2,
};
#endif
struct eth_addr {
u8 addr[6];
};
static struct eth_addr __initdata hw_addr[1];
static struct eth_platform_data __initdata eth_data[1];
/*
* 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 = 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 (!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(1, 0); /* USART 1: /dev/ttyS0, DB9 */
at32_setup_serial_console(0);
}
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[] = {};
#ifdef CONFIG_BOARD_HAMMERHEAD_SND
static struct ac97c_platform_data ac97c_data = {
.reset_pin = GPIO_PIN_PA(16),
};
#endif
static int __init hammerhead_init(void)
{
/*
* Hammerhead uses 32-bit SDRAM interface. Reserve the
* SDRAM-specific pins so that nobody messes with them.
*/
at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
at32_add_device_usart(0);
/* Reserve PB29 (GCLK3). This pin is used as clock source
* for ETH PHY (25MHz). GCLK3 setup is done by U-Boot.
*/
at32_reserve_pin(GPIO_PIOB_BASE, (1<<29));
/*
* Hammerhead uses only one ethernet port, so we don't set
* address of second port
*/
set_hw_addr(at32_add_device_eth(0, ð_data[0]));
#ifdef CONFIG_BOARD_HAMMERHEAD_FPGA
at32_add_device_hh_fpga();
#endif
at32_add_device_mci(0, NULL);
#ifdef CONFIG_BOARD_HAMMERHEAD_USB
at32_add_device_usba(0, NULL);
#endif
#ifdef CONFIG_BOARD_HAMMERHEAD_LCD
at32_add_device_lcdc(0, &hammerhead_lcdc_data, fbmem_start,
fbmem_size, ATMEL_LCDC_PRI_24BIT);
#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));
#ifdef CONFIG_BOARD_HAMMERHEAD_SND
at32_add_device_ac97c(0, &ac97c_data);
#endif
/* Select the Touchscreen interrupt pin mode */
at32_select_periph(GPIO_PIOB_BASE, 0x08000000, GPIO_PERIPH_A, 0);
return 0;
}
postcore_initcall(hammerhead_init);
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