/* * 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 <linux/spi/at73c213.h> #include <video/atmel_lcdc.h> #include <asm/io.h> #include <asm/setup.h> #include <asm/arch/at32ap700x.h> #include <asm/arch/board.h> #include <asm/arch/init.h> #include <asm/arch/portmux.h> #include "atstk1000.h" struct eth_addr { u8 addr[6]; }; static struct eth_addr __initdata hw_addr[2]; static struct eth_platform_data __initdata eth_data[2] = { { /* * The MDIO pullups on STK1000 are a bit too weak for * the autodetection to work properly, so we have to * mask out everything but the correct address. */ .phy_mask = ~(1U << 16), }, { .phy_mask = ~(1U << 17), }, }; #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC static struct at73c213_board_info at73c213_data = { .ssc_id = 0, .shortname = "AVR32 STK1000 external DAC", }; #endif #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM static struct spi_board_info spi0_board_info[] __initdata = { #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC { /* AT73C213 */ .modalias = "at73c213", .max_speed_hz = 200000, .chip_select = 0, .mode = SPI_MODE_1, .platform_data = &at73c213_data, }, #endif { /* QVGA display */ .modalias = "ltv350qv", .max_speed_hz = 16000000, .chip_select = 1, .mode = SPI_MODE_3, }, }; #endif #ifdef CONFIG_BOARD_ATSTK100X_SPI1 static struct spi_board_info spi1_board_info[] __initdata = { { /* patch in custom entries here */ } }; #endif /* * 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); } #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC static void __init atstk1002_setup_extdac(void) { struct clk *gclk; struct clk *pll; gclk = clk_get(NULL, "gclk0"); if (IS_ERR(gclk)) goto err_gclk; pll = clk_get(NULL, "pll0"); if (IS_ERR(pll)) goto err_pll; if (clk_set_parent(gclk, pll)) { pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n"); goto err_set_clk; } at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0); at73c213_data.dac_clk = gclk; err_set_clk: clk_put(pll); err_pll: clk_put(gclk); err_gclk: return; } #else static void __init atstk1002_setup_extdac(void) { } #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */ void __init setup_board(void) { #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */ #else at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */ #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 CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_add_device_usart(1); #else at32_add_device_usart(0); #endif at32_add_device_usart(2); #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM set_hw_addr(at32_add_device_eth(0, ð_data[0])); #endif #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); #endif #ifdef CONFIG_BOARD_ATSTK100X_SPI1 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); #endif #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM set_hw_addr(at32_add_device_eth(1, ð_data[1])); #else at32_add_device_lcdc(0, &atstk1000_lcdc_data, fbmem_start, fbmem_size); #endif at32_add_device_usba(0, NULL); #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM at32_add_device_ssc(0, ATMEL_SSC_TX); #endif atstk1000_setup_j2_leds(); atstk1002_setup_extdac(); return 0; } postcore_initcall(atstk1002_init);