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a2f7bffa MC |
1 | /* |
2 | * linux/arch/arm/mach-s3c64xx/mach-smartq.c | |
3 | * | |
4 | * Copyright (C) 2010 Maurus Cuelenaere | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/delay.h> | |
13 | #include <linux/fb.h> | |
14 | #include <linux/gpio.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/pwm_backlight.h> | |
18 | #include <linux/serial_core.h> | |
49f91b9e | 19 | #include <linux/spi/spi_gpio.h> |
a2f7bffa MC |
20 | #include <linux/usb/gpio_vbus.h> |
21 | ||
22 | #include <asm/mach-types.h> | |
23 | #include <asm/mach/map.h> | |
24 | ||
25 | #include <mach/map.h> | |
26 | #include <mach/regs-gpio.h> | |
27 | #include <mach/regs-modem.h> | |
28 | ||
29 | #include <plat/clock.h> | |
30 | #include <plat/cpu.h> | |
31 | #include <plat/devs.h> | |
32 | #include <plat/iic.h> | |
33 | #include <plat/gpio-cfg.h> | |
34 | #include <plat/hwmon.h> | |
35 | #include <plat/regs-serial.h> | |
36 | #include <plat/udc-hs.h> | |
37 | #include <plat/usb-control.h> | |
38 | #include <plat/sdhci.h> | |
39 | #include <plat/ts.h> | |
40 | ||
41 | #include <video/platform_lcd.h> | |
42 | ||
43 | #define UCON S3C2410_UCON_DEFAULT | |
44 | #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE) | |
45 | #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) | |
46 | ||
47 | static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = { | |
48 | [0] = { | |
49 | .hwport = 0, | |
50 | .flags = 0, | |
51 | .ucon = UCON, | |
52 | .ulcon = ULCON, | |
53 | .ufcon = UFCON, | |
54 | }, | |
55 | [1] = { | |
56 | .hwport = 1, | |
57 | .flags = 0, | |
58 | .ucon = UCON, | |
59 | .ulcon = ULCON, | |
60 | .ufcon = UFCON, | |
61 | }, | |
62 | [2] = { | |
63 | .hwport = 2, | |
64 | .flags = 0, | |
65 | .ucon = UCON, | |
66 | .ulcon = ULCON, | |
67 | .ufcon = UFCON, | |
68 | }, | |
69 | }; | |
70 | ||
71 | static void smartq_usb_host_powercontrol(int port, int to) | |
72 | { | |
73 | pr_debug("%s(%d, %d)\n", __func__, port, to); | |
74 | ||
75 | if (port == 0) { | |
76 | gpio_set_value(S3C64XX_GPL(0), to); | |
77 | gpio_set_value(S3C64XX_GPL(1), to); | |
78 | } | |
79 | } | |
80 | ||
81 | static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw) | |
82 | { | |
83 | struct s3c2410_hcd_info *info = pw; | |
84 | ||
85 | if (gpio_get_value(S3C64XX_GPL(10)) == 0) { | |
86 | pr_debug("%s: over-current irq (oc detected)\n", __func__); | |
87 | s3c2410_usb_report_oc(info, 3); | |
88 | } else { | |
89 | pr_debug("%s: over-current irq (oc cleared)\n", __func__); | |
90 | s3c2410_usb_report_oc(info, 0); | |
91 | } | |
92 | ||
93 | return IRQ_HANDLED; | |
94 | } | |
95 | ||
96 | static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on) | |
97 | { | |
98 | int ret; | |
99 | ||
100 | /* This isn't present on a SmartQ 5 board */ | |
101 | if (machine_is_smartq5()) | |
102 | return; | |
103 | ||
104 | if (on) { | |
105 | ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)), | |
106 | smartq_usb_host_ocirq, IRQF_DISABLED | | |
107 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | |
108 | "USB host overcurrent", info); | |
109 | if (ret != 0) | |
110 | pr_err("failed to request usb oc irq: %d\n", ret); | |
111 | } else { | |
112 | free_irq(gpio_to_irq(S3C64XX_GPL(10)), info); | |
113 | } | |
114 | } | |
115 | ||
116 | static struct s3c2410_hcd_info smartq_usb_host_info = { | |
117 | .port[0] = { | |
118 | .flags = S3C_HCDFLG_USED | |
119 | }, | |
120 | .port[1] = { | |
121 | .flags = 0 | |
122 | }, | |
123 | ||
124 | .power_control = smartq_usb_host_powercontrol, | |
125 | .enable_oc = smartq_usb_host_enableoc, | |
126 | }; | |
127 | ||
128 | static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = { | |
129 | .gpio_vbus = S3C64XX_GPL(9), | |
130 | .gpio_pullup = -1, | |
131 | .gpio_vbus_inverted = true, | |
132 | }; | |
133 | ||
134 | static struct platform_device smartq_usb_otg_vbus_dev = { | |
135 | .name = "gpio-vbus", | |
136 | .dev.platform_data = &smartq_usb_otg_vbus_pdata, | |
137 | }; | |
138 | ||
139 | static int __init smartq_bl_init(struct device *dev) | |
140 | { | |
141 | s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2)); | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static struct platform_pwm_backlight_data smartq_backlight_data = { | |
147 | .pwm_id = 1, | |
148 | .max_brightness = 1000, | |
149 | .dft_brightness = 600, | |
150 | .pwm_period_ns = 1000000000 / (1000 * 20), | |
151 | .init = smartq_bl_init, | |
152 | }; | |
153 | ||
154 | static struct platform_device smartq_backlight_device = { | |
155 | .name = "pwm-backlight", | |
156 | .dev = { | |
157 | .parent = &s3c_device_timer[1].dev, | |
158 | .platform_data = &smartq_backlight_data, | |
159 | }, | |
160 | }; | |
161 | ||
162 | static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = { | |
163 | .delay = 65535, | |
164 | .presc = 99, | |
165 | .oversampling_shift = 4, | |
166 | }; | |
167 | ||
168 | static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = { | |
169 | .max_width = 4, | |
170 | /*.broken_card_detection = true,*/ | |
171 | }; | |
172 | ||
173 | static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = { | |
174 | /* Battery voltage (?-4.2V) */ | |
175 | .in[0] = &(struct s3c_hwmon_chcfg) { | |
176 | .name = "smartq:battery-voltage", | |
177 | .mult = 3300, | |
178 | .div = 2048, | |
179 | }, | |
180 | /* Reference voltage (1.2V) */ | |
181 | .in[1] = &(struct s3c_hwmon_chcfg) { | |
182 | .name = "smartq:reference-voltage", | |
183 | .mult = 3300, | |
184 | .div = 4096, | |
185 | }, | |
186 | }; | |
187 | ||
49f91b9e MC |
188 | static int __init smartq_lcd_setup_gpio(void) |
189 | { | |
190 | int ret; | |
191 | ||
192 | ret = gpio_request(S3C64XX_GPM(3), "LCD power"); | |
193 | if (ret < 0) | |
194 | return ret; | |
195 | ||
196 | /* turn power off */ | |
197 | gpio_direction_output(S3C64XX_GPM(3), 0); | |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
202 | /* GPM0 -> CS */ | |
203 | static struct spi_gpio_platform_data smartq_lcd_control = { | |
204 | .sck = S3C64XX_GPM(1), | |
205 | .mosi = S3C64XX_GPM(2), | |
206 | .miso = S3C64XX_GPM(2), | |
207 | }; | |
208 | ||
209 | static struct platform_device smartq_lcd_control_device = { | |
210 | .name = "spi-gpio", | |
211 | .id = 1, | |
212 | .dev.platform_data = &smartq_lcd_control, | |
213 | }; | |
214 | ||
a2f7bffa MC |
215 | static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power) |
216 | { | |
217 | gpio_direction_output(S3C64XX_GPM(3), power); | |
218 | } | |
219 | ||
220 | static struct plat_lcd_data smartq_lcd_power_data = { | |
221 | .set_power = smartq_lcd_power_set, | |
222 | }; | |
223 | ||
224 | static struct platform_device smartq_lcd_power_device = { | |
225 | .name = "platform-lcd", | |
226 | .dev.parent = &s3c_device_fb.dev, | |
227 | .dev.platform_data = &smartq_lcd_power_data, | |
228 | }; | |
229 | ||
a2f7bffa MC |
230 | static struct platform_device *smartq_devices[] __initdata = { |
231 | &s3c_device_hsmmc1, /* Init iNAND first, ... */ | |
232 | &s3c_device_hsmmc0, /* ... then the external SD card */ | |
233 | &s3c_device_hsmmc2, | |
234 | &s3c_device_adc, | |
235 | &s3c_device_fb, | |
236 | &s3c_device_hwmon, | |
237 | &s3c_device_i2c0, | |
238 | &s3c_device_ohci, | |
239 | &s3c_device_rtc, | |
240 | &s3c_device_timer[1], | |
241 | &s3c_device_ts, | |
242 | &s3c_device_usb_hsotg, | |
243 | &smartq_backlight_device, | |
49f91b9e | 244 | &smartq_lcd_control_device, |
a2f7bffa MC |
245 | &smartq_lcd_power_device, |
246 | &smartq_usb_otg_vbus_dev, | |
247 | }; | |
248 | ||
249 | static void __init smartq_lcd_mode_set(void) | |
250 | { | |
251 | u32 tmp; | |
252 | ||
253 | /* set the LCD type */ | |
254 | tmp = __raw_readl(S3C64XX_SPCON); | |
255 | tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK; | |
256 | tmp |= S3C64XX_SPCON_LCD_SEL_RGB; | |
257 | __raw_writel(tmp, S3C64XX_SPCON); | |
258 | ||
259 | /* remove the LCD bypass */ | |
260 | tmp = __raw_readl(S3C64XX_MODEM_MIFPCON); | |
261 | tmp &= ~MIFPCON_LCD_BYPASS; | |
262 | __raw_writel(tmp, S3C64XX_MODEM_MIFPCON); | |
263 | } | |
264 | ||
265 | static void smartq_power_off(void) | |
266 | { | |
267 | gpio_direction_output(S3C64XX_GPK(15), 1); | |
268 | } | |
269 | ||
270 | static int __init smartq_power_off_init(void) | |
271 | { | |
272 | int ret; | |
273 | ||
274 | ret = gpio_request(S3C64XX_GPK(15), "Power control"); | |
275 | if (ret < 0) { | |
276 | pr_err("%s: failed to get GPK15\n", __func__); | |
277 | return ret; | |
278 | } | |
279 | ||
280 | /* leave power on */ | |
281 | gpio_direction_output(S3C64XX_GPK(15), 0); | |
282 | ||
a2f7bffa MC |
283 | pm_power_off = smartq_power_off; |
284 | ||
285 | return ret; | |
286 | } | |
287 | ||
288 | static int __init smartq_usb_host_init(void) | |
289 | { | |
290 | int ret; | |
291 | ||
292 | ret = gpio_request(S3C64XX_GPL(0), "USB power control"); | |
293 | if (ret < 0) { | |
294 | pr_err("%s: failed to get GPL0\n", __func__); | |
295 | return ret; | |
296 | } | |
297 | ||
298 | ret = gpio_request(S3C64XX_GPL(1), "USB host power control"); | |
299 | if (ret < 0) { | |
300 | pr_err("%s: failed to get GPL1\n", __func__); | |
301 | goto err; | |
302 | } | |
303 | ||
304 | if (!machine_is_smartq5()) { | |
305 | /* This isn't present on a SmartQ 5 board */ | |
306 | ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent"); | |
307 | if (ret < 0) { | |
308 | pr_err("%s: failed to get GPL10\n", __func__); | |
309 | goto err2; | |
310 | } | |
311 | } | |
312 | ||
313 | /* turn power off */ | |
314 | gpio_direction_output(S3C64XX_GPL(0), 0); | |
315 | gpio_direction_output(S3C64XX_GPL(1), 0); | |
316 | if (!machine_is_smartq5()) | |
317 | gpio_direction_input(S3C64XX_GPL(10)); | |
318 | ||
319 | s3c_device_ohci.dev.platform_data = &smartq_usb_host_info; | |
320 | ||
321 | return 0; | |
322 | ||
323 | err2: | |
324 | gpio_free(S3C64XX_GPL(1)); | |
325 | err: | |
326 | gpio_free(S3C64XX_GPL(0)); | |
327 | return ret; | |
328 | } | |
329 | ||
330 | static int __init smartq_usb_otg_init(void) | |
331 | { | |
332 | clk_xusbxti.rate = 12000000; | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static int __init smartq_wifi_init(void) | |
338 | { | |
339 | int ret; | |
340 | ||
341 | ret = gpio_request(S3C64XX_GPK(1), "wifi control"); | |
342 | if (ret < 0) { | |
343 | pr_err("%s: failed to get GPK1\n", __func__); | |
344 | return ret; | |
345 | } | |
346 | ||
347 | ret = gpio_request(S3C64XX_GPK(2), "wifi reset"); | |
348 | if (ret < 0) { | |
349 | pr_err("%s: failed to get GPK2\n", __func__); | |
350 | gpio_free(S3C64XX_GPK(1)); | |
351 | return ret; | |
352 | } | |
353 | ||
354 | /* turn power on */ | |
355 | gpio_direction_output(S3C64XX_GPK(1), 1); | |
356 | ||
357 | /* reset device */ | |
358 | gpio_direction_output(S3C64XX_GPK(2), 0); | |
359 | mdelay(100); | |
360 | gpio_set_value(S3C64XX_GPK(2), 1); | |
361 | gpio_direction_input(S3C64XX_GPK(2)); | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | static struct map_desc smartq_iodesc[] __initdata = {}; | |
367 | void __init smartq_map_io(void) | |
368 | { | |
369 | s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc)); | |
370 | s3c24xx_init_clocks(12000000); | |
371 | s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs)); | |
372 | ||
373 | smartq_lcd_mode_set(); | |
374 | } | |
375 | ||
376 | void __init smartq_machine_init(void) | |
377 | { | |
378 | s3c_i2c0_set_platdata(NULL); | |
379 | s3c_hwmon_set_platdata(&smartq_hwmon_pdata); | |
380 | s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata); | |
381 | s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata); | |
382 | s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata); | |
383 | ||
49f91b9e | 384 | WARN_ON(smartq_lcd_setup_gpio()); |
a2f7bffa MC |
385 | WARN_ON(smartq_power_off_init()); |
386 | WARN_ON(smartq_usb_host_init()); | |
387 | WARN_ON(smartq_usb_otg_init()); | |
388 | WARN_ON(smartq_wifi_init()); | |
389 | ||
390 | platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices)); | |
391 | } |