Commit | Line | Data |
---|---|---|
19d95e1a KW |
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> |
19d95e1a KW |
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> | |
9c587c05 | 40 | #include <mach/gpio-lpc32xx.h> |
19d95e1a KW |
41 | #include "common.h" |
42 | ||
43 | /* | |
44 | * Mapped GPIOLIB GPIOs | |
45 | */ | |
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) | |
50 | ||
51 | /* | |
52 | * AMBA LCD controller | |
53 | */ | |
54 | static struct clcd_panel conn_lcd_panel = { | |
55 | .mode = { | |
56 | .name = "QVGA portrait", | |
57 | .refresh = 60, | |
58 | .xres = 240, | |
59 | .yres = 320, | |
60 | .pixclock = 191828, | |
61 | .left_margin = 22, | |
62 | .right_margin = 11, | |
63 | .upper_margin = 2, | |
64 | .lower_margin = 1, | |
65 | .hsync_len = 5, | |
66 | .vsync_len = 2, | |
67 | .sync = 0, | |
68 | .vmode = FB_VMODE_NONINTERLACED, | |
69 | }, | |
70 | .width = -1, | |
71 | .height = -1, | |
72 | .tim2 = (TIM2_IVS | TIM2_IHS), | |
73 | .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) | | |
74 | CNTL_LCDBPP16_565), | |
75 | .bpp = 16, | |
76 | }; | |
77 | #define PANEL_SIZE (3 * SZ_64K) | |
78 | ||
79 | static int lpc32xx_clcd_setup(struct clcd_fb *fb) | |
80 | { | |
81 | dma_addr_t dma; | |
82 | ||
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"); | |
87 | return -ENOMEM; | |
88 | } | |
89 | ||
90 | fb->fb.fix.smem_start = dma; | |
91 | fb->fb.fix.smem_len = PANEL_SIZE; | |
92 | fb->panel = &conn_lcd_panel; | |
93 | ||
94 | if (gpio_request(LCD_POWER_GPIO, "LCD power")) | |
95 | printk(KERN_ERR "Error requesting gpio %u", | |
96 | LCD_POWER_GPIO); | |
97 | else if (gpio_direction_output(LCD_POWER_GPIO, 1)) | |
98 | printk(KERN_ERR "Error setting gpio %u to output", | |
99 | LCD_POWER_GPIO); | |
100 | ||
101 | if (gpio_request(BKL_POWER_GPIO, "LCD backlight power")) | |
102 | printk(KERN_ERR "Error requesting gpio %u", | |
103 | BKL_POWER_GPIO); | |
104 | else if (gpio_direction_output(BKL_POWER_GPIO, 1)) | |
105 | printk(KERN_ERR "Error setting gpio %u to output", | |
106 | BKL_POWER_GPIO); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
112 | { | |
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); | |
116 | } | |
117 | ||
118 | static void lpc32xx_clcd_remove(struct clcd_fb *fb) | |
119 | { | |
120 | dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, | |
121 | fb->fb.screen_base, fb->fb.fix.smem_start); | |
122 | } | |
123 | ||
124 | /* | |
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 | |
127 | * BKL_POWER_GPIO. | |
128 | */ | |
129 | static void clcd_disable(struct clcd_fb *fb) | |
130 | { | |
131 | gpio_set_value(BKL_POWER_GPIO, 0); | |
132 | gpio_set_value(LCD_POWER_GPIO, 0); | |
133 | } | |
134 | ||
135 | static void clcd_enable(struct clcd_fb *fb) | |
136 | { | |
137 | gpio_set_value(BKL_POWER_GPIO, 1); | |
138 | gpio_set_value(LCD_POWER_GPIO, 1); | |
139 | } | |
140 | ||
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, | |
150 | }; | |
151 | ||
e78b68ae RK |
152 | static AMBA_AHB_DEVICE(lpc32xx_clcd, "dev:clcd", 0, |
153 | LPC32XX_LCD_BASE, { IRQ_LPC32XX_LCD }, &lpc32xx_clcd_data); | |
19d95e1a KW |
154 | |
155 | /* | |
156 | * AMBA SSP (SPI) | |
157 | */ | |
158 | static void phy3250_spi_cs_set(u32 control) | |
159 | { | |
160 | gpio_set_value(SPI0_CS_GPIO, (int) control); | |
161 | } | |
162 | ||
163 | static struct pl022_config_chip spi0_chip_info = { | |
19d95e1a KW |
164 | .com_mode = INTERRUPT_TRANSFER, |
165 | .iface = SSP_INTERFACE_MOTOROLA_SPI, | |
166 | .hierarchy = SSP_MASTER, | |
167 | .slave_tx_disable = 0, | |
19d95e1a KW |
168 | .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, |
169 | .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, | |
19d95e1a KW |
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, | |
174 | }; | |
175 | ||
176 | static struct pl022_ssp_controller lpc32xx_ssp0_data = { | |
177 | .bus_id = 0, | |
178 | .num_chipselect = 1, | |
179 | .enable_dma = 0, | |
180 | }; | |
181 | ||
e78b68ae RK |
182 | static AMBA_APB_DEVICE(lpc32xx_ssp0, "dev:ssp0", 0, |
183 | LPC32XX_SSP0_BASE, { IRQ_LPC32XX_SSP0 }, &lpc32xx_ssp0_data); | |
19d95e1a KW |
184 | |
185 | /* AT25 driver registration */ | |
186 | static int __init phy3250_spi_board_register(void) | |
187 | { | |
188 | #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) | |
189 | static struct spi_board_info info[] = { | |
190 | { | |
191 | .modalias = "spidev", | |
192 | .max_speed_hz = 5000000, | |
193 | .bus_num = 0, | |
194 | .chip_select = 0, | |
195 | .controller_data = &spi0_chip_info, | |
196 | }, | |
197 | }; | |
198 | ||
199 | #else | |
200 | static struct spi_eeprom eeprom = { | |
201 | .name = "at25256a", | |
202 | .byte_len = 0x8000, | |
203 | .page_size = 64, | |
204 | .flags = EE_ADDR2, | |
205 | }; | |
206 | ||
207 | static struct spi_board_info info[] = { | |
208 | { | |
209 | .modalias = "at25", | |
210 | .max_speed_hz = 5000000, | |
211 | .bus_num = 0, | |
212 | .chip_select = 0, | |
bde435a9 | 213 | .mode = SPI_MODE_0, |
19d95e1a KW |
214 | .platform_data = &eeprom, |
215 | .controller_data = &spi0_chip_info, | |
216 | }, | |
217 | }; | |
218 | #endif | |
219 | return spi_register_board_info(info, ARRAY_SIZE(info)); | |
220 | } | |
221 | arch_initcall(phy3250_spi_board_register); | |
222 | ||
223 | static struct i2c_board_info __initdata phy3250_i2c_board_info[] = { | |
224 | { | |
225 | I2C_BOARD_INFO("pcf8563", 0x51), | |
226 | }, | |
227 | }; | |
228 | ||
229 | static struct gpio_led phy_leds[] = { | |
230 | { | |
231 | .name = "led0", | |
232 | .gpio = LED_GPIO, | |
233 | .active_low = 1, | |
234 | .default_trigger = "heartbeat", | |
235 | }, | |
236 | }; | |
237 | ||
238 | static struct gpio_led_platform_data led_data = { | |
239 | .leds = phy_leds, | |
240 | .num_leds = ARRAY_SIZE(phy_leds), | |
241 | }; | |
242 | ||
243 | static struct platform_device lpc32xx_gpio_led_device = { | |
244 | .name = "leds-gpio", | |
245 | .id = -1, | |
246 | .dev.platform_data = &led_data, | |
247 | }; | |
248 | ||
249 | static struct platform_device *phy3250_devs[] __initdata = { | |
250 | &lpc32xx_i2c0_device, | |
251 | &lpc32xx_i2c1_device, | |
252 | &lpc32xx_i2c2_device, | |
253 | &lpc32xx_watchdog_device, | |
254 | &lpc32xx_gpio_led_device, | |
255 | }; | |
256 | ||
257 | static struct amba_device *amba_devs[] __initdata = { | |
258 | &lpc32xx_clcd_device, | |
259 | &lpc32xx_ssp0_device, | |
260 | }; | |
261 | ||
262 | /* | |
263 | * Board specific functions | |
264 | */ | |
265 | static void __init phy3250_board_init(void) | |
266 | { | |
267 | u32 tmp; | |
268 | int i; | |
269 | ||
270 | lpc32xx_gpio_init(); | |
271 | ||
272 | /* Register GPIOs used on this board */ | |
273 | if (gpio_request(SPI0_CS_GPIO, "spi0 cs")) | |
274 | printk(KERN_ERR "Error requesting gpio %u", | |
275 | SPI0_CS_GPIO); | |
276 | else if (gpio_direction_output(SPI0_CS_GPIO, 1)) | |
277 | printk(KERN_ERR "Error setting gpio %u to output", | |
278 | SPI0_CS_GPIO); | |
279 | ||
280 | /* Setup network interface for RMII mode */ | |
281 | tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL); | |
282 | tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK; | |
283 | tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS; | |
284 | __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL); | |
285 | ||
286 | /* Setup SLC NAND controller muxing */ | |
287 | __raw_writel(LPC32XX_CLKPWR_NANDCLK_SEL_SLC, | |
288 | LPC32XX_CLKPWR_NAND_CLK_CTRL); | |
289 | ||
290 | /* Setup LCD muxing to RGB565 */ | |
291 | tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) & | |
292 | ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK | | |
293 | LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK); | |
294 | tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16; | |
295 | __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL); | |
296 | ||
297 | /* Set up I2C pull levels */ | |
298 | tmp = __raw_readl(LPC32XX_CLKPWR_I2C_CLK_CTRL); | |
299 | tmp |= LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE | | |
300 | LPC32XX_CLKPWR_I2CCLK_I2C2HI_DRIVE; | |
301 | __raw_writel(tmp, LPC32XX_CLKPWR_I2C_CLK_CTRL); | |
302 | ||
303 | /* Disable IrDA pulsing support on UART6 */ | |
304 | tmp = __raw_readl(LPC32XX_UARTCTL_CTRL); | |
305 | tmp |= LPC32XX_UART_UART6_IRDAMOD_BYPASS; | |
306 | __raw_writel(tmp, LPC32XX_UARTCTL_CTRL); | |
307 | ||
308 | /* Enable DMA for I2S1 channel */ | |
309 | tmp = __raw_readl(LPC32XX_CLKPWR_I2S_CLK_CTRL); | |
310 | tmp = LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA; | |
311 | __raw_writel(tmp, LPC32XX_CLKPWR_I2S_CLK_CTRL); | |
312 | ||
313 | lpc32xx_serial_init(); | |
314 | ||
315 | /* | |
316 | * AMBA peripheral clocks need to be enabled prior to AMBA device | |
317 | * detection or a data fault will occur, so enable the clocks | |
318 | * here. However, we don't want to enable them if the peripheral | |
319 | * isn't included in the image | |
320 | */ | |
321 | #ifdef CONFIG_FB_ARMCLCD | |
322 | tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL); | |
323 | __raw_writel((tmp | LPC32XX_CLKPWR_LCDCTRL_CLK_EN), | |
324 | LPC32XX_CLKPWR_LCDCLK_CTRL); | |
325 | #endif | |
326 | #ifdef CONFIG_SPI_PL022 | |
327 | tmp = __raw_readl(LPC32XX_CLKPWR_SSP_CLK_CTRL); | |
328 | __raw_writel((tmp | LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN), | |
329 | LPC32XX_CLKPWR_SSP_CLK_CTRL); | |
330 | #endif | |
331 | ||
332 | platform_add_devices(phy3250_devs, ARRAY_SIZE(phy3250_devs)); | |
333 | for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { | |
334 | struct amba_device *d = amba_devs[i]; | |
335 | amba_device_register(d, &iomem_resource); | |
336 | } | |
337 | ||
338 | /* Test clock needed for UDA1380 initial init */ | |
339 | __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC | | |
340 | LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN, | |
341 | LPC32XX_CLKPWR_TEST_CLK_SEL); | |
342 | ||
343 | i2c_register_board_info(0, phy3250_i2c_board_info, | |
344 | ARRAY_SIZE(phy3250_i2c_board_info)); | |
345 | } | |
346 | ||
347 | static int __init lpc32xx_display_uid(void) | |
348 | { | |
349 | u32 uid[4]; | |
350 | ||
351 | lpc32xx_get_uid(uid); | |
352 | ||
353 | printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n", | |
354 | uid[3], uid[2], uid[1], uid[0]); | |
355 | ||
356 | return 1; | |
357 | } | |
358 | arch_initcall(lpc32xx_display_uid); | |
359 | ||
360 | MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250 Microcontroller") | |
361 | /* Maintainer: Kevin Wells, NXP Semiconductors */ | |
bdec5ddd | 362 | .atag_offset = 0x100, |
19d95e1a KW |
363 | .map_io = lpc32xx_map_io, |
364 | .init_irq = lpc32xx_init_irq, | |
365 | .timer = &lpc32xx_timer, | |
366 | .init_machine = phy3250_board_init, | |
b23fcd90 | 367 | .restart = lpc23xx_restart, |
19d95e1a | 368 | MACHINE_END |