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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> | |
c20b909b | 40 | #include <mach/board.h> |
9c587c05 | 41 | #include <mach/gpio-lpc32xx.h> |
19d95e1a KW |
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 | */ | |
55 | static 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 | ||
80 | static 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 | ||
112 | static 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 | ||
119 | static 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 | */ | |
130 | static 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 | ||
136 | static 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 | ||
142 | static 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 | ||
e78b68ae RK |
153 | static AMBA_AHB_DEVICE(lpc32xx_clcd, "dev:clcd", 0, |
154 | LPC32XX_LCD_BASE, { IRQ_LPC32XX_LCD }, &lpc32xx_clcd_data); | |
19d95e1a KW |
155 | |
156 | /* | |
157 | * AMBA SSP (SPI) | |
158 | */ | |
159 | static void phy3250_spi_cs_set(u32 control) | |
160 | { | |
161 | gpio_set_value(SPI0_CS_GPIO, (int) control); | |
162 | } | |
163 | ||
164 | static struct pl022_config_chip spi0_chip_info = { | |
19d95e1a KW |
165 | .com_mode = INTERRUPT_TRANSFER, |
166 | .iface = SSP_INTERFACE_MOTOROLA_SPI, | |
167 | .hierarchy = SSP_MASTER, | |
168 | .slave_tx_disable = 0, | |
19d95e1a KW |
169 | .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, |
170 | .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, | |
19d95e1a KW |
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 | ||
177 | static struct pl022_ssp_controller lpc32xx_ssp0_data = { | |
178 | .bus_id = 0, | |
179 | .num_chipselect = 1, | |
180 | .enable_dma = 0, | |
181 | }; | |
182 | ||
e78b68ae RK |
183 | static AMBA_APB_DEVICE(lpc32xx_ssp0, "dev:ssp0", 0, |
184 | LPC32XX_SSP0_BASE, { IRQ_LPC32XX_SSP0 }, &lpc32xx_ssp0_data); | |
19d95e1a KW |
185 | |
186 | /* AT25 driver registration */ | |
187 | static 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, |
19d95e1a KW |
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 | } | |
222 | arch_initcall(phy3250_spi_board_register); | |
223 | ||
224 | static struct i2c_board_info __initdata phy3250_i2c_board_info[] = { | |
225 | { | |
226 | I2C_BOARD_INFO("pcf8563", 0x51), | |
227 | }, | |
228 | }; | |
229 | ||
230 | static struct gpio_led phy_leds[] = { | |
231 | { | |
232 | .name = "led0", | |
233 | .gpio = LED_GPIO, | |
234 | .active_low = 1, | |
235 | .default_trigger = "heartbeat", | |
236 | }, | |
237 | }; | |
238 | ||
239 | static struct gpio_led_platform_data led_data = { | |
240 | .leds = phy_leds, | |
241 | .num_leds = ARRAY_SIZE(phy_leds), | |
242 | }; | |
243 | ||
244 | static struct platform_device lpc32xx_gpio_led_device = { | |
245 | .name = "leds-gpio", | |
246 | .id = -1, | |
247 | .dev.platform_data = &led_data, | |
248 | }; | |
249 | ||
250 | static struct platform_device *phy3250_devs[] __initdata = { | |
737a2cb9 WS |
251 | &lpc32xx_rtc_device, |
252 | &lpc32xx_tsc_device, | |
19d95e1a KW |
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, |
19d95e1a KW |
261 | }; |
262 | ||
263 | static struct amba_device *amba_devs[] __initdata = { | |
264 | &lpc32xx_clcd_device, | |
265 | &lpc32xx_ssp0_device, | |
266 | }; | |
267 | ||
268 | /* | |
269 | * Board specific functions | |
270 | */ | |
271 | static 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 | ||
353 | static 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 | } | |
364 | arch_initcall(lpc32xx_display_uid); | |
365 | ||
366 | MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250 Microcontroller") | |
367 | /* Maintainer: Kevin Wells, NXP Semiconductors */ | |
bdec5ddd | 368 | .atag_offset = 0x100, |
19d95e1a KW |
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 | 374 | MACHINE_END |