/* * arch/arm/mach-lpc32xx/phy3250.c * * Author: Kevin Wells <kevin.wells@nxp.com> * * Copyright (C) 2010 NXP Semiconductors * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/sysdev.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/dma-mapping.h> #include <linux/device.h> #include <linux/spi/spi.h> #include <linux/spi/eeprom.h> #include <linux/leds.h> #include <linux/gpio.h> #include <linux/amba/bus.h> #include <linux/amba/clcd.h> #include <linux/amba/pl022.h> #include <asm/setup.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <mach/hardware.h> #include <mach/platform.h> #include "common.h" /* * Mapped GPIOLIB GPIOs */ #define SPI0_CS_GPIO LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5) #define LCD_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 0) #define BKL_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 4) #define LED_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 1) /* * AMBA LCD controller */ static struct clcd_panel conn_lcd_panel = { .mode = { .name = "QVGA portrait", .refresh = 60, .xres = 240, .yres = 320, .pixclock = 191828, .left_margin = 22, .right_margin = 11, .upper_margin = 2, .lower_margin = 1, .hsync_len = 5, .vsync_len = 2, .sync = 0, .vmode = FB_VMODE_NONINTERLACED, }, .width = -1, .height = -1, .tim2 = (TIM2_IVS | TIM2_IHS), .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) | CNTL_LCDBPP16_565), .bpp = 16, }; #define PANEL_SIZE (3 * SZ_64K) static int lpc32xx_clcd_setup(struct clcd_fb *fb) { dma_addr_t dma; fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, PANEL_SIZE, &dma, GFP_KERNEL); if (!fb->fb.screen_base) { printk(KERN_ERR "CLCD: unable to map framebuffer\n"); return -ENOMEM; } fb->fb.fix.smem_start = dma; fb->fb.fix.smem_len = PANEL_SIZE; fb->panel = &conn_lcd_panel; if (gpio_request(LCD_POWER_GPIO, "LCD power")) printk(KERN_ERR "Error requesting gpio %u", LCD_POWER_GPIO); else if (gpio_direction_output(LCD_POWER_GPIO, 1)) printk(KERN_ERR "Error setting gpio %u to output", LCD_POWER_GPIO); if (gpio_request(BKL_POWER_GPIO, "LCD backlight power")) printk(KERN_ERR "Error requesting gpio %u", BKL_POWER_GPIO); else if (gpio_direction_output(BKL_POWER_GPIO, 1)) printk(KERN_ERR "Error setting gpio %u to output", BKL_POWER_GPIO); return 0; } static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) { return dma_mmap_writecombine(&fb->dev->dev, vma, fb->fb.screen_base, fb->fb.fix.smem_start, fb->fb.fix.smem_len); } static void lpc32xx_clcd_remove(struct clcd_fb *fb) { dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base, fb->fb.fix.smem_start); } /* * On some early LCD modules (1307.0), the backlight logic is inverted. * For those board variants, swap the disable and enable states for * BKL_POWER_GPIO. */ static void clcd_disable(struct clcd_fb *fb) { gpio_set_value(BKL_POWER_GPIO, 0); gpio_set_value(LCD_POWER_GPIO, 0); } static void clcd_enable(struct clcd_fb *fb) { gpio_set_value(BKL_POWER_GPIO, 1); gpio_set_value(LCD_POWER_GPIO, 1); } static struct clcd_board lpc32xx_clcd_data = { .name = "Phytec LCD", .check = clcdfb_check, .decode = clcdfb_decode, .disable = clcd_disable, .enable = clcd_enable, .setup = lpc32xx_clcd_setup, .mmap = lpc32xx_clcd_mmap, .remove = lpc32xx_clcd_remove, }; static struct amba_device lpc32xx_clcd_device = { .dev = { .coherent_dma_mask = ~0, .init_name = "dev:clcd", .platform_data = &lpc32xx_clcd_data, }, .res = { .start = LPC32XX_LCD_BASE, .end = (LPC32XX_LCD_BASE + SZ_4K - 1), .flags = IORESOURCE_MEM, }, .dma_mask = ~0, .irq = {IRQ_LPC32XX_LCD, NO_IRQ}, }; /* * AMBA SSP (SPI) */ static void phy3250_spi_cs_set(u32 control) { gpio_set_value(SPI0_CS_GPIO, (int) control); } static struct pl022_config_chip spi0_chip_info = { .lbm = LOOPBACK_DISABLED, .com_mode = INTERRUPT_TRANSFER, .iface = SSP_INTERFACE_MOTOROLA_SPI, .hierarchy = SSP_MASTER, .slave_tx_disable = 0, .endian_tx = SSP_TX_LSB, .endian_rx = SSP_RX_LSB, .data_size = SSP_DATA_BITS_8, .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, .clk_phase = SSP_CLK_FIRST_EDGE, .clk_pol = SSP_CLK_POL_IDLE_LOW, .ctrl_len = SSP_BITS_8, .wait_state = SSP_MWIRE_WAIT_ZERO, .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, .cs_control = phy3250_spi_cs_set, }; static struct pl022_ssp_controller lpc32xx_ssp0_data = { .bus_id = 0, .num_chipselect = 1, .enable_dma = 0, }; static struct amba_device lpc32xx_ssp0_device = { .dev = { .coherent_dma_mask = ~0, .init_name = "dev:ssp0", .platform_data = &lpc32xx_ssp0_data, }, .res = { .start = LPC32XX_SSP0_BASE, .end = (LPC32XX_SSP0_BASE + SZ_4K - 1), .flags = IORESOURCE_MEM, }, .dma_mask = ~0, .irq = {IRQ_LPC32XX_SSP0, NO_IRQ}, }; /* AT25 driver registration */ static int __init phy3250_spi_board_register(void) { #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) static struct spi_board_info info[] = { { .modalias = "spidev", .max_speed_hz = 5000000, .bus_num = 0, .chip_select = 0, .controller_data = &spi0_chip_info, }, }; #else static struct spi_eeprom eeprom = { .name = "at25256a", .byte_len = 0x8000, .page_size = 64, .flags = EE_ADDR2, }; static struct spi_board_info info[] = { { .modalias = "at25", .max_speed_hz = 5000000, .bus_num = 0, .chip_select = 0, .platform_data = &eeprom, .controller_data = &spi0_chip_info, }, }; #endif return spi_register_board_info(info, ARRAY_SIZE(info)); } arch_initcall(phy3250_spi_board_register); static struct i2c_board_info __initdata phy3250_i2c_board_info[] = { { I2C_BOARD_INFO("pcf8563", 0x51), }, }; static struct gpio_led phy_leds[] = { { .name = "led0", .gpio = LED_GPIO, .active_low = 1, .default_trigger = "heartbeat", }, }; static struct gpio_led_platform_data led_data = { .leds = phy_leds, .num_leds = ARRAY_SIZE(phy_leds), }; static struct platform_device lpc32xx_gpio_led_device = { .name = "leds-gpio", .id = -1, .dev.platform_data = &led_data, }; static struct platform_device *phy3250_devs[] __initdata = { &lpc32xx_i2c0_device, &lpc32xx_i2c1_device, &lpc32xx_i2c2_device, &lpc32xx_watchdog_device, &lpc32xx_gpio_led_device, }; static struct amba_device *amba_devs[] __initdata = { &lpc32xx_clcd_device, &lpc32xx_ssp0_device, }; /* * Board specific functions */ static void __init phy3250_board_init(void) { u32 tmp; int i; lpc32xx_gpio_init(); /* Register GPIOs used on this board */ if (gpio_request(SPI0_CS_GPIO, "spi0 cs")) printk(KERN_ERR "Error requesting gpio %u", SPI0_CS_GPIO); else if (gpio_direction_output(SPI0_CS_GPIO, 1)) printk(KERN_ERR "Error setting gpio %u to output", SPI0_CS_GPIO); /* Setup network interface for RMII mode */ tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL); tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK; tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS; __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL); /* Setup SLC NAND controller muxing */ __raw_writel(LPC32XX_CLKPWR_NANDCLK_SEL_SLC, LPC32XX_CLKPWR_NAND_CLK_CTRL); /* Setup LCD muxing to RGB565 */ tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) & ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK | LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK); tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16; __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL); /* Set up I2C pull levels */ tmp = __raw_readl(LPC32XX_CLKPWR_I2C_CLK_CTRL); tmp |= LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE | LPC32XX_CLKPWR_I2CCLK_I2C2HI_DRIVE; __raw_writel(tmp, LPC32XX_CLKPWR_I2C_CLK_CTRL); /* Disable IrDA pulsing support on UART6 */ tmp = __raw_readl(LPC32XX_UARTCTL_CTRL); tmp |= LPC32XX_UART_UART6_IRDAMOD_BYPASS; __raw_writel(tmp, LPC32XX_UARTCTL_CTRL); /* Enable DMA for I2S1 channel */ tmp = __raw_readl(LPC32XX_CLKPWR_I2S_CLK_CTRL); tmp = LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA; __raw_writel(tmp, LPC32XX_CLKPWR_I2S_CLK_CTRL); lpc32xx_serial_init(); /* * AMBA peripheral clocks need to be enabled prior to AMBA device * detection or a data fault will occur, so enable the clocks * here. However, we don't want to enable them if the peripheral * isn't included in the image */ #ifdef CONFIG_FB_ARMCLCD tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL); __raw_writel((tmp | LPC32XX_CLKPWR_LCDCTRL_CLK_EN), LPC32XX_CLKPWR_LCDCLK_CTRL); #endif #ifdef CONFIG_SPI_PL022 tmp = __raw_readl(LPC32XX_CLKPWR_SSP_CLK_CTRL); __raw_writel((tmp | LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN), LPC32XX_CLKPWR_SSP_CLK_CTRL); #endif platform_add_devices(phy3250_devs, ARRAY_SIZE(phy3250_devs)); for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { struct amba_device *d = amba_devs[i]; amba_device_register(d, &iomem_resource); } /* Test clock needed for UDA1380 initial init */ __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC | LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN, LPC32XX_CLKPWR_TEST_CLK_SEL); i2c_register_board_info(0, phy3250_i2c_board_info, ARRAY_SIZE(phy3250_i2c_board_info)); } static int __init lpc32xx_display_uid(void) { u32 uid[4]; lpc32xx_get_uid(uid); printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n", uid[3], uid[2], uid[1], uid[0]); return 1; } arch_initcall(lpc32xx_display_uid); MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250 Microcontroller") /* Maintainer: Kevin Wells, NXP Semiconductors */ .phys_io = LPC32XX_UART5_BASE, .io_pg_offst = ((IO_ADDRESS(LPC32XX_UART5_BASE))>>18) & 0xfffc, .boot_params = 0x80000100, .map_io = lpc32xx_map_io, .init_irq = lpc32xx_init_irq, .timer = &lpc32xx_timer, .init_machine = phy3250_board_init, MACHINE_END