2 * arch/arm/mach-lpc32xx/phy3250.c
4 * Author: Kevin Wells <kevin.wells@nxp.com>
6 * Copyright (C) 2010 NXP Semiconductors
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #include <linux/init.h>
20 #include <linux/platform_device.h>
21 #include <linux/device.h>
22 #include <linux/interrupt.h>
23 #include <linux/irq.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/device.h>
26 #include <linux/spi/spi.h>
27 #include <linux/spi/eeprom.h>
28 #include <linux/leds.h>
29 #include <linux/gpio.h>
30 #include <linux/amba/bus.h>
31 #include <linux/amba/clcd.h>
32 #include <linux/amba/pl022.h>
34 #include <asm/setup.h>
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
38 #include <mach/hardware.h>
39 #include <mach/platform.h>
40 #include <mach/gpio-lpc32xx.h>
44 * Mapped GPIOLIB GPIOs
46 #define SPI0_CS_GPIO LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5)
47 #define LCD_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 0)
48 #define BKL_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 4)
49 #define LED_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 1)
54 static struct clcd_panel conn_lcd_panel = {
56 .name = "QVGA portrait",
68 .vmode = FB_VMODE_NONINTERLACED,
72 .tim2 = (TIM2_IVS | TIM2_IHS),
73 .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) |
77 #define PANEL_SIZE (3 * SZ_64K)
79 static int lpc32xx_clcd_setup(struct clcd_fb *fb)
83 fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev,
84 PANEL_SIZE, &dma, GFP_KERNEL);
85 if (!fb->fb.screen_base) {
86 printk(KERN_ERR "CLCD: unable to map framebuffer\n");
90 fb->fb.fix.smem_start = dma;
91 fb->fb.fix.smem_len = PANEL_SIZE;
92 fb->panel = &conn_lcd_panel;
94 if (gpio_request(LCD_POWER_GPIO, "LCD power"))
95 printk(KERN_ERR "Error requesting gpio %u",
97 else if (gpio_direction_output(LCD_POWER_GPIO, 1))
98 printk(KERN_ERR "Error setting gpio %u to output",
101 if (gpio_request(BKL_POWER_GPIO, "LCD backlight power"))
102 printk(KERN_ERR "Error requesting gpio %u",
104 else if (gpio_direction_output(BKL_POWER_GPIO, 1))
105 printk(KERN_ERR "Error setting gpio %u to output",
111 static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
113 return dma_mmap_writecombine(&fb->dev->dev, vma,
114 fb->fb.screen_base, fb->fb.fix.smem_start,
115 fb->fb.fix.smem_len);
118 static void lpc32xx_clcd_remove(struct clcd_fb *fb)
120 dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
121 fb->fb.screen_base, fb->fb.fix.smem_start);
125 * On some early LCD modules (1307.0), the backlight logic is inverted.
126 * For those board variants, swap the disable and enable states for
129 static void clcd_disable(struct clcd_fb *fb)
131 gpio_set_value(BKL_POWER_GPIO, 0);
132 gpio_set_value(LCD_POWER_GPIO, 0);
135 static void clcd_enable(struct clcd_fb *fb)
137 gpio_set_value(BKL_POWER_GPIO, 1);
138 gpio_set_value(LCD_POWER_GPIO, 1);
141 static struct clcd_board lpc32xx_clcd_data = {
142 .name = "Phytec LCD",
143 .check = clcdfb_check,
144 .decode = clcdfb_decode,
145 .disable = clcd_disable,
146 .enable = clcd_enable,
147 .setup = lpc32xx_clcd_setup,
148 .mmap = lpc32xx_clcd_mmap,
149 .remove = lpc32xx_clcd_remove,
152 static AMBA_AHB_DEVICE(lpc32xx_clcd, "dev:clcd", 0,
153 LPC32XX_LCD_BASE, { IRQ_LPC32XX_LCD }, &lpc32xx_clcd_data);
158 static void phy3250_spi_cs_set(u32 control)
160 gpio_set_value(SPI0_CS_GPIO, (int) control);
163 static struct pl022_config_chip spi0_chip_info = {
164 .com_mode = INTERRUPT_TRANSFER,
165 .iface = SSP_INTERFACE_MOTOROLA_SPI,
166 .hierarchy = SSP_MASTER,
167 .slave_tx_disable = 0,
168 .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM,
169 .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC,
170 .ctrl_len = SSP_BITS_8,
171 .wait_state = SSP_MWIRE_WAIT_ZERO,
172 .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX,
173 .cs_control = phy3250_spi_cs_set,
176 static struct pl022_ssp_controller lpc32xx_ssp0_data = {
182 static AMBA_APB_DEVICE(lpc32xx_ssp0, "dev:ssp0", 0,
183 LPC32XX_SSP0_BASE, { IRQ_LPC32XX_SSP0 }, &lpc32xx_ssp0_data);
185 /* AT25 driver registration */
186 static int __init phy3250_spi_board_register(void)
188 #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
189 static struct spi_board_info info[] = {
191 .modalias = "spidev",
192 .max_speed_hz = 5000000,
195 .controller_data = &spi0_chip_info,
200 static struct spi_eeprom eeprom = {
207 static struct spi_board_info info[] = {
210 .max_speed_hz = 5000000,
214 .platform_data = &eeprom,
215 .controller_data = &spi0_chip_info,
219 return spi_register_board_info(info, ARRAY_SIZE(info));
221 arch_initcall(phy3250_spi_board_register);
223 static struct i2c_board_info __initdata phy3250_i2c_board_info[] = {
225 I2C_BOARD_INFO("pcf8563", 0x51),
229 static struct gpio_led phy_leds[] = {
234 .default_trigger = "heartbeat",
238 static struct gpio_led_platform_data led_data = {
240 .num_leds = ARRAY_SIZE(phy_leds),
243 static struct platform_device lpc32xx_gpio_led_device = {
246 .dev.platform_data = &led_data,
249 static struct platform_device *phy3250_devs[] __initdata = {
252 &lpc32xx_i2c0_device,
253 &lpc32xx_i2c1_device,
254 &lpc32xx_i2c2_device,
255 &lpc32xx_watchdog_device,
256 &lpc32xx_gpio_led_device,
260 static struct amba_device *amba_devs[] __initdata = {
261 &lpc32xx_clcd_device,
262 &lpc32xx_ssp0_device,
266 * Board specific functions
268 static void __init phy3250_board_init(void)
275 /* Register GPIOs used on this board */
276 if (gpio_request(SPI0_CS_GPIO, "spi0 cs"))
277 printk(KERN_ERR "Error requesting gpio %u",
279 else if (gpio_direction_output(SPI0_CS_GPIO, 1))
280 printk(KERN_ERR "Error setting gpio %u to output",
283 /* Setup network interface for RMII mode */
284 tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL);
285 tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK;
286 tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS;
287 __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL);
289 /* Setup SLC NAND controller muxing */
290 __raw_writel(LPC32XX_CLKPWR_NANDCLK_SEL_SLC,
291 LPC32XX_CLKPWR_NAND_CLK_CTRL);
293 /* Setup LCD muxing to RGB565 */
294 tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) &
295 ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK |
296 LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK);
297 tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16;
298 __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL);
300 /* Set up I2C pull levels */
301 tmp = __raw_readl(LPC32XX_CLKPWR_I2C_CLK_CTRL);
302 tmp |= LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE |
303 LPC32XX_CLKPWR_I2CCLK_I2C2HI_DRIVE;
304 __raw_writel(tmp, LPC32XX_CLKPWR_I2C_CLK_CTRL);
306 /* Disable IrDA pulsing support on UART6 */
307 tmp = __raw_readl(LPC32XX_UARTCTL_CTRL);
308 tmp |= LPC32XX_UART_UART6_IRDAMOD_BYPASS;
309 __raw_writel(tmp, LPC32XX_UARTCTL_CTRL);
311 /* Enable DMA for I2S1 channel */
312 tmp = __raw_readl(LPC32XX_CLKPWR_I2S_CLK_CTRL);
313 tmp = LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA;
314 __raw_writel(tmp, LPC32XX_CLKPWR_I2S_CLK_CTRL);
316 lpc32xx_serial_init();
319 * AMBA peripheral clocks need to be enabled prior to AMBA device
320 * detection or a data fault will occur, so enable the clocks
321 * here. However, we don't want to enable them if the peripheral
322 * isn't included in the image
324 #ifdef CONFIG_FB_ARMCLCD
325 tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL);
326 __raw_writel((tmp | LPC32XX_CLKPWR_LCDCTRL_CLK_EN),
327 LPC32XX_CLKPWR_LCDCLK_CTRL);
329 #ifdef CONFIG_SPI_PL022
330 tmp = __raw_readl(LPC32XX_CLKPWR_SSP_CLK_CTRL);
331 __raw_writel((tmp | LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN),
332 LPC32XX_CLKPWR_SSP_CLK_CTRL);
335 platform_add_devices(phy3250_devs, ARRAY_SIZE(phy3250_devs));
336 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
337 struct amba_device *d = amba_devs[i];
338 amba_device_register(d, &iomem_resource);
341 /* Test clock needed for UDA1380 initial init */
342 __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC |
343 LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN,
344 LPC32XX_CLKPWR_TEST_CLK_SEL);
346 i2c_register_board_info(0, phy3250_i2c_board_info,
347 ARRAY_SIZE(phy3250_i2c_board_info));
350 static int __init lpc32xx_display_uid(void)
354 lpc32xx_get_uid(uid);
356 printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n",
357 uid[3], uid[2], uid[1], uid[0]);
361 arch_initcall(lpc32xx_display_uid);
363 MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250 Microcontroller")
364 /* Maintainer: Kevin Wells, NXP Semiconductors */
365 .atag_offset = 0x100,
366 .map_io = lpc32xx_map_io,
367 .init_irq = lpc32xx_init_irq,
368 .timer = &lpc32xx_timer,
369 .init_machine = phy3250_board_init,
370 .restart = lpc23xx_restart,