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/*
* ATSTK1002 daughterboard-specific init code
*
* Copyright (C) 2005-2006 Atmel Corporation
*
* 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/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/spi/spi.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/arch/at32ap7000.h>
#include <asm/arch/board.h>
#include <asm/arch/init.h>
#include <asm/arch/portmux.h>
#define SW2_DEFAULT /* MMCI and UART_A available */
struct eth_addr {
u8 addr[6];
};
static struct eth_addr __initdata hw_addr[2];
static struct eth_platform_data __initdata eth_data[2];
static struct lcdc_platform_data atstk1000_fb0_data;
static struct spi_board_info spi0_board_info[] __initdata = {
{
/* QVGA display */
.modalias = "ltv350qv",
.max_speed_hz = 16000000,
.chip_select = 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;
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)
{
#ifdef SW2_DEFAULT
at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */
#else
at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */
#endif
/* USART 2/unused: expansion connector */
at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */
at32_setup_serial_console(0);
}
static int __init atstk1002_init(void)
{
/*
* ATSTK1000 uses 32-bit SDRAM interface. Reserve the
* SDRAM-specific pins so that nobody messes with them.
*/
at32_reserve_pin(GPIO_PIN_PE(0)); /* DATA[16] */
at32_reserve_pin(GPIO_PIN_PE(1)); /* DATA[17] */
at32_reserve_pin(GPIO_PIN_PE(2)); /* DATA[18] */
at32_reserve_pin(GPIO_PIN_PE(3)); /* DATA[19] */
at32_reserve_pin(GPIO_PIN_PE(4)); /* DATA[20] */
at32_reserve_pin(GPIO_PIN_PE(5)); /* DATA[21] */
at32_reserve_pin(GPIO_PIN_PE(6)); /* DATA[22] */
at32_reserve_pin(GPIO_PIN_PE(7)); /* DATA[23] */
at32_reserve_pin(GPIO_PIN_PE(8)); /* DATA[24] */
at32_reserve_pin(GPIO_PIN_PE(9)); /* DATA[25] */
at32_reserve_pin(GPIO_PIN_PE(10)); /* DATA[26] */
at32_reserve_pin(GPIO_PIN_PE(11)); /* DATA[27] */
at32_reserve_pin(GPIO_PIN_PE(12)); /* DATA[28] */
at32_reserve_pin(GPIO_PIN_PE(13)); /* DATA[29] */
at32_reserve_pin(GPIO_PIN_PE(14)); /* DATA[30] */
at32_reserve_pin(GPIO_PIN_PE(15)); /* DATA[31] */
at32_reserve_pin(GPIO_PIN_PE(26)); /* SDCS */
at32_add_system_devices();
#ifdef SW2_DEFAULT
at32_add_device_usart(0);
#else
at32_add_device_usart(1);
#endif
at32_add_device_usart(2);
set_hw_addr(at32_add_device_eth(0, ð_data[0]));
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
atstk1000_fb0_data.fbmem_start = fbmem_start;
atstk1000_fb0_data.fbmem_size = fbmem_size;
at32_add_device_lcdc(0, &atstk1000_fb0_data);
return 0;
}
postcore_initcall(atstk1002_init);
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