| /* |
| * 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/device.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 <mach/gpio-lpc32xx.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 AMBA_AHB_DEVICE(lpc32xx_clcd, "dev:clcd", 0, |
| LPC32XX_LCD_BASE, { IRQ_LPC32XX_LCD }, &lpc32xx_clcd_data); |
| |
| /* |
| * 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 = { |
| .com_mode = INTERRUPT_TRANSFER, |
| .iface = SSP_INTERFACE_MOTOROLA_SPI, |
| .hierarchy = SSP_MASTER, |
| .slave_tx_disable = 0, |
| .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, |
| .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, |
| .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 AMBA_APB_DEVICE(lpc32xx_ssp0, "dev:ssp0", 0, |
| LPC32XX_SSP0_BASE, { IRQ_LPC32XX_SSP0 }, &lpc32xx_ssp0_data); |
| |
| /* 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, |
| .mode = SPI_MODE_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 */ |
| .atag_offset = 0x100, |
| .map_io = lpc32xx_map_io, |
| .init_irq = lpc32xx_init_irq, |
| .timer = &lpc32xx_timer, |
| .init_machine = phy3250_board_init, |
| .restart = lpc23xx_restart, |
| MACHINE_END |