ARM: LPC32xx: DTS files for device tree conversion
[deliverable/linux.git] / arch / arm / mach-lpc32xx / phy3250.c
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1/*
2 * arch/arm/mach-lpc32xx/phy3250.c
3 *
4 * Author: Kevin Wells <kevin.wells@nxp.com>
5 *
6 * Copyright (C) 2010 NXP Semiconductors
7 *
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.
12 *
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.
17 */
18
19#include <linux/init.h>
20#include <linux/platform_device.h>
edbaa603 21#include <linux/device.h>
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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>
33
34#include <asm/setup.h>
35#include <asm/mach-types.h>
36#include <asm/mach/arch.h>
37
38#include <mach/hardware.h>
39#include <mach/platform.h>
c20b909b 40#include <mach/board.h>
9c587c05 41#include <mach/gpio-lpc32xx.h>
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42#include "common.h"
43
44/*
45 * Mapped GPIOLIB GPIOs
46 */
47#define SPI0_CS_GPIO LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5)
48#define LCD_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 0)
49#define BKL_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 4)
50#define LED_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 1)
51
52/*
53 * AMBA LCD controller
54 */
55static struct clcd_panel conn_lcd_panel = {
56 .mode = {
57 .name = "QVGA portrait",
58 .refresh = 60,
59 .xres = 240,
60 .yres = 320,
61 .pixclock = 191828,
62 .left_margin = 22,
63 .right_margin = 11,
64 .upper_margin = 2,
65 .lower_margin = 1,
66 .hsync_len = 5,
67 .vsync_len = 2,
68 .sync = 0,
69 .vmode = FB_VMODE_NONINTERLACED,
70 },
71 .width = -1,
72 .height = -1,
73 .tim2 = (TIM2_IVS | TIM2_IHS),
74 .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) |
75 CNTL_LCDBPP16_565),
76 .bpp = 16,
77};
78#define PANEL_SIZE (3 * SZ_64K)
79
80static int lpc32xx_clcd_setup(struct clcd_fb *fb)
81{
82 dma_addr_t dma;
83
84 fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev,
85 PANEL_SIZE, &dma, GFP_KERNEL);
86 if (!fb->fb.screen_base) {
87 printk(KERN_ERR "CLCD: unable to map framebuffer\n");
88 return -ENOMEM;
89 }
90
91 fb->fb.fix.smem_start = dma;
92 fb->fb.fix.smem_len = PANEL_SIZE;
93 fb->panel = &conn_lcd_panel;
94
95 if (gpio_request(LCD_POWER_GPIO, "LCD power"))
96 printk(KERN_ERR "Error requesting gpio %u",
97 LCD_POWER_GPIO);
98 else if (gpio_direction_output(LCD_POWER_GPIO, 1))
99 printk(KERN_ERR "Error setting gpio %u to output",
100 LCD_POWER_GPIO);
101
102 if (gpio_request(BKL_POWER_GPIO, "LCD backlight power"))
103 printk(KERN_ERR "Error requesting gpio %u",
104 BKL_POWER_GPIO);
105 else if (gpio_direction_output(BKL_POWER_GPIO, 1))
106 printk(KERN_ERR "Error setting gpio %u to output",
107 BKL_POWER_GPIO);
108
109 return 0;
110}
111
112static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
113{
114 return dma_mmap_writecombine(&fb->dev->dev, vma,
115 fb->fb.screen_base, fb->fb.fix.smem_start,
116 fb->fb.fix.smem_len);
117}
118
119static void lpc32xx_clcd_remove(struct clcd_fb *fb)
120{
121 dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
122 fb->fb.screen_base, fb->fb.fix.smem_start);
123}
124
125/*
126 * On some early LCD modules (1307.0), the backlight logic is inverted.
127 * For those board variants, swap the disable and enable states for
128 * BKL_POWER_GPIO.
129*/
130static void clcd_disable(struct clcd_fb *fb)
131{
132 gpio_set_value(BKL_POWER_GPIO, 0);
133 gpio_set_value(LCD_POWER_GPIO, 0);
134}
135
136static void clcd_enable(struct clcd_fb *fb)
137{
138 gpio_set_value(BKL_POWER_GPIO, 1);
139 gpio_set_value(LCD_POWER_GPIO, 1);
140}
141
142static struct clcd_board lpc32xx_clcd_data = {
143 .name = "Phytec LCD",
144 .check = clcdfb_check,
145 .decode = clcdfb_decode,
146 .disable = clcd_disable,
147 .enable = clcd_enable,
148 .setup = lpc32xx_clcd_setup,
149 .mmap = lpc32xx_clcd_mmap,
150 .remove = lpc32xx_clcd_remove,
151};
152
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153static AMBA_AHB_DEVICE(lpc32xx_clcd, "dev:clcd", 0,
154 LPC32XX_LCD_BASE, { IRQ_LPC32XX_LCD }, &lpc32xx_clcd_data);
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155
156/*
157 * AMBA SSP (SPI)
158 */
159static void phy3250_spi_cs_set(u32 control)
160{
161 gpio_set_value(SPI0_CS_GPIO, (int) control);
162}
163
164static struct pl022_config_chip spi0_chip_info = {
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165 .com_mode = INTERRUPT_TRANSFER,
166 .iface = SSP_INTERFACE_MOTOROLA_SPI,
167 .hierarchy = SSP_MASTER,
168 .slave_tx_disable = 0,
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169 .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM,
170 .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC,
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171 .ctrl_len = SSP_BITS_8,
172 .wait_state = SSP_MWIRE_WAIT_ZERO,
173 .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX,
174 .cs_control = phy3250_spi_cs_set,
175};
176
177static struct pl022_ssp_controller lpc32xx_ssp0_data = {
178 .bus_id = 0,
179 .num_chipselect = 1,
180 .enable_dma = 0,
181};
182
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183static AMBA_APB_DEVICE(lpc32xx_ssp0, "dev:ssp0", 0,
184 LPC32XX_SSP0_BASE, { IRQ_LPC32XX_SSP0 }, &lpc32xx_ssp0_data);
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185
186/* AT25 driver registration */
187static int __init phy3250_spi_board_register(void)
188{
189#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
190 static struct spi_board_info info[] = {
191 {
192 .modalias = "spidev",
193 .max_speed_hz = 5000000,
194 .bus_num = 0,
195 .chip_select = 0,
196 .controller_data = &spi0_chip_info,
197 },
198 };
199
200#else
201 static struct spi_eeprom eeprom = {
202 .name = "at25256a",
203 .byte_len = 0x8000,
204 .page_size = 64,
205 .flags = EE_ADDR2,
206 };
207
208 static struct spi_board_info info[] = {
209 {
210 .modalias = "at25",
211 .max_speed_hz = 5000000,
212 .bus_num = 0,
213 .chip_select = 0,
bde435a9 214 .mode = SPI_MODE_0,
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215 .platform_data = &eeprom,
216 .controller_data = &spi0_chip_info,
217 },
218 };
219#endif
220 return spi_register_board_info(info, ARRAY_SIZE(info));
221}
222arch_initcall(phy3250_spi_board_register);
223
224static struct i2c_board_info __initdata phy3250_i2c_board_info[] = {
225 {
226 I2C_BOARD_INFO("pcf8563", 0x51),
227 },
228};
229
230static struct gpio_led phy_leds[] = {
231 {
232 .name = "led0",
233 .gpio = LED_GPIO,
234 .active_low = 1,
235 .default_trigger = "heartbeat",
236 },
237};
238
239static struct gpio_led_platform_data led_data = {
240 .leds = phy_leds,
241 .num_leds = ARRAY_SIZE(phy_leds),
242};
243
244static struct platform_device lpc32xx_gpio_led_device = {
245 .name = "leds-gpio",
246 .id = -1,
247 .dev.platform_data = &led_data,
248};
249
250static struct platform_device *phy3250_devs[] __initdata = {
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251 &lpc32xx_rtc_device,
252 &lpc32xx_tsc_device,
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253 &lpc32xx_i2c0_device,
254 &lpc32xx_i2c1_device,
255 &lpc32xx_i2c2_device,
256 &lpc32xx_watchdog_device,
257 &lpc32xx_gpio_led_device,
678a0222 258 &lpc32xx_adc_device,
48a5dedf 259 &lpc32xx_ohci_device,
c20b909b 260 &lpc32xx_net_device,
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261};
262
263static struct amba_device *amba_devs[] __initdata = {
264 &lpc32xx_clcd_device,
265 &lpc32xx_ssp0_device,
266};
267
268/*
269 * Board specific functions
270 */
271static void __init phy3250_board_init(void)
272{
273 u32 tmp;
274 int i;
275
276 lpc32xx_gpio_init();
277
278 /* Register GPIOs used on this board */
279 if (gpio_request(SPI0_CS_GPIO, "spi0 cs"))
280 printk(KERN_ERR "Error requesting gpio %u",
281 SPI0_CS_GPIO);
282 else if (gpio_direction_output(SPI0_CS_GPIO, 1))
283 printk(KERN_ERR "Error setting gpio %u to output",
284 SPI0_CS_GPIO);
285
286 /* Setup network interface for RMII mode */
287 tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL);
288 tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK;
289 tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS;
290 __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL);
291
292 /* Setup SLC NAND controller muxing */
293 __raw_writel(LPC32XX_CLKPWR_NANDCLK_SEL_SLC,
294 LPC32XX_CLKPWR_NAND_CLK_CTRL);
295
296 /* Setup LCD muxing to RGB565 */
297 tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) &
298 ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK |
299 LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK);
300 tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16;
301 __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL);
302
303 /* Set up I2C pull levels */
304 tmp = __raw_readl(LPC32XX_CLKPWR_I2C_CLK_CTRL);
305 tmp |= LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE |
306 LPC32XX_CLKPWR_I2CCLK_I2C2HI_DRIVE;
307 __raw_writel(tmp, LPC32XX_CLKPWR_I2C_CLK_CTRL);
308
309 /* Disable IrDA pulsing support on UART6 */
310 tmp = __raw_readl(LPC32XX_UARTCTL_CTRL);
311 tmp |= LPC32XX_UART_UART6_IRDAMOD_BYPASS;
312 __raw_writel(tmp, LPC32XX_UARTCTL_CTRL);
313
314 /* Enable DMA for I2S1 channel */
315 tmp = __raw_readl(LPC32XX_CLKPWR_I2S_CLK_CTRL);
316 tmp = LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA;
317 __raw_writel(tmp, LPC32XX_CLKPWR_I2S_CLK_CTRL);
318
319 lpc32xx_serial_init();
320
321 /*
322 * AMBA peripheral clocks need to be enabled prior to AMBA device
323 * detection or a data fault will occur, so enable the clocks
324 * here. However, we don't want to enable them if the peripheral
325 * isn't included in the image
326 */
327#ifdef CONFIG_FB_ARMCLCD
328 tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL);
329 __raw_writel((tmp | LPC32XX_CLKPWR_LCDCTRL_CLK_EN),
330 LPC32XX_CLKPWR_LCDCLK_CTRL);
331#endif
332#ifdef CONFIG_SPI_PL022
333 tmp = __raw_readl(LPC32XX_CLKPWR_SSP_CLK_CTRL);
334 __raw_writel((tmp | LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN),
335 LPC32XX_CLKPWR_SSP_CLK_CTRL);
336#endif
337
338 platform_add_devices(phy3250_devs, ARRAY_SIZE(phy3250_devs));
339 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
340 struct amba_device *d = amba_devs[i];
341 amba_device_register(d, &iomem_resource);
342 }
343
344 /* Test clock needed for UDA1380 initial init */
345 __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC |
346 LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN,
347 LPC32XX_CLKPWR_TEST_CLK_SEL);
348
349 i2c_register_board_info(0, phy3250_i2c_board_info,
350 ARRAY_SIZE(phy3250_i2c_board_info));
351}
352
353static int __init lpc32xx_display_uid(void)
354{
355 u32 uid[4];
356
357 lpc32xx_get_uid(uid);
358
359 printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n",
360 uid[3], uid[2], uid[1], uid[0]);
361
362 return 1;
363}
364arch_initcall(lpc32xx_display_uid);
365
366MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250 Microcontroller")
367 /* Maintainer: Kevin Wells, NXP Semiconductors */
bdec5ddd 368 .atag_offset = 0x100,
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369 .map_io = lpc32xx_map_io,
370 .init_irq = lpc32xx_init_irq,
371 .timer = &lpc32xx_timer,
372 .init_machine = phy3250_board_init,
b23fcd90 373 .restart = lpc23xx_restart,
19d95e1a 374MACHINE_END
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