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>
19 #include <linux/serial_s3c.h>
20 #include <linux/spi/spi_gpio.h>
21 #include <linux/usb/gpio_vbus.h>
22 #include <linux/platform_data/s3c-hsotg.h>
23
24 #include <asm/mach-types.h>
25 #include <asm/mach/map.h>
26
27 #include <mach/map.h>
28 #include <mach/regs-gpio.h>
29 #include <mach/gpio-samsung.h>
30
31 #include <plat/cpu.h>
32 #include <plat/devs.h>
33 #include <linux/platform_data/i2c-s3c2410.h>
34 #include <plat/gpio-cfg.h>
35 #include <linux/platform_data/hwmon-s3c.h>
36 #include <linux/platform_data/usb-ohci-s3c2410.h>
37 #include <plat/sdhci.h>
38 #include <linux/platform_data/touchscreen-s3c2410.h>
39
40 #include <video/platform_lcd.h>
41 #include <plat/samsung-time.h>
42
43 #include "common.h"
44 #include "regs-modem.h"
45
46 #define UCON S3C2410_UCON_DEFAULT
47 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
48 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
49
50 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
51 [0] = {
52 .hwport = 0,
53 .flags = 0,
54 .ucon = UCON,
55 .ulcon = ULCON,
56 .ufcon = UFCON,
57 },
58 [1] = {
59 .hwport = 1,
60 .flags = 0,
61 .ucon = UCON,
62 .ulcon = ULCON,
63 .ufcon = UFCON,
64 },
65 [2] = {
66 .hwport = 2,
67 .flags = 0,
68 .ucon = UCON,
69 .ulcon = ULCON,
70 .ufcon = UFCON,
71 },
72 };
73
smartq_usb_host_powercontrol(int port,int to)74 static void smartq_usb_host_powercontrol(int port, int to)
75 {
76 pr_debug("%s(%d, %d)\n", __func__, port, to);
77
78 if (port == 0) {
79 gpio_set_value(S3C64XX_GPL(0), to);
80 gpio_set_value(S3C64XX_GPL(1), to);
81 }
82 }
83
smartq_usb_host_ocirq(int irq,void * pw)84 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
85 {
86 struct s3c2410_hcd_info *info = pw;
87
88 if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
89 pr_debug("%s: over-current irq (oc detected)\n", __func__);
90 s3c2410_usb_report_oc(info, 3);
91 } else {
92 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
93 s3c2410_usb_report_oc(info, 0);
94 }
95
96 return IRQ_HANDLED;
97 }
98
smartq_usb_host_enableoc(struct s3c2410_hcd_info * info,int on)99 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
100 {
101 int ret;
102
103 /* This isn't present on a SmartQ 5 board */
104 if (machine_is_smartq5())
105 return;
106
107 if (on) {
108 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
109 smartq_usb_host_ocirq,
110 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
111 "USB host overcurrent", info);
112 if (ret != 0)
113 pr_err("failed to request usb oc irq: %d\n", ret);
114 } else {
115 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
116 }
117 }
118
119 static struct s3c2410_hcd_info smartq_usb_host_info = {
120 .port[0] = {
121 .flags = S3C_HCDFLG_USED
122 },
123 .port[1] = {
124 .flags = 0
125 },
126
127 .power_control = smartq_usb_host_powercontrol,
128 .enable_oc = smartq_usb_host_enableoc,
129 };
130
131 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
132 .gpio_vbus = S3C64XX_GPL(9),
133 .gpio_pullup = -1,
134 .gpio_vbus_inverted = true,
135 };
136
137 static struct platform_device smartq_usb_otg_vbus_dev = {
138 .name = "gpio-vbus",
139 .dev.platform_data = &smartq_usb_otg_vbus_pdata,
140 };
141
smartq_bl_init(struct device * dev)142 static int smartq_bl_init(struct device *dev)
143 {
144 s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
145
146 return 0;
147 }
148
149 static struct platform_pwm_backlight_data smartq_backlight_data = {
150 .pwm_id = 1,
151 .max_brightness = 1000,
152 .dft_brightness = 600,
153 .pwm_period_ns = 1000000000 / (1000 * 20),
154 .enable_gpio = -1,
155 .init = smartq_bl_init,
156 };
157
158 static struct platform_device smartq_backlight_device = {
159 .name = "pwm-backlight",
160 .dev = {
161 .parent = &samsung_device_pwm.dev,
162 .platform_data = &smartq_backlight_data,
163 },
164 };
165
166 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
167 .delay = 65535,
168 .presc = 99,
169 .oversampling_shift = 4,
170 };
171
172 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
173 .max_width = 4,
174 .cd_type = S3C_SDHCI_CD_PERMANENT,
175 };
176
177 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
178 /* Battery voltage (?-4.2V) */
179 .in[0] = &(struct s3c_hwmon_chcfg) {
180 .name = "smartq:battery-voltage",
181 .mult = 3300,
182 .div = 2048,
183 },
184 /* Reference voltage (1.2V) */
185 .in[1] = &(struct s3c_hwmon_chcfg) {
186 .name = "smartq:reference-voltage",
187 .mult = 3300,
188 .div = 4096,
189 },
190 };
191
192 static struct s3c_hsotg_plat smartq_hsotg_pdata;
193
smartq_lcd_setup_gpio(void)194 static int __init smartq_lcd_setup_gpio(void)
195 {
196 int ret;
197
198 ret = gpio_request(S3C64XX_GPM(3), "LCD power");
199 if (ret < 0)
200 return ret;
201
202 /* turn power off */
203 gpio_direction_output(S3C64XX_GPM(3), 0);
204
205 return 0;
206 }
207
208 /* GPM0 -> CS */
209 static struct spi_gpio_platform_data smartq_lcd_control = {
210 .sck = S3C64XX_GPM(1),
211 .mosi = S3C64XX_GPM(2),
212 .miso = S3C64XX_GPM(2),
213 };
214
215 static struct platform_device smartq_lcd_control_device = {
216 .name = "spi-gpio",
217 .id = 1,
218 .dev.platform_data = &smartq_lcd_control,
219 };
220
smartq_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)221 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
222 {
223 gpio_direction_output(S3C64XX_GPM(3), power);
224 }
225
226 static struct plat_lcd_data smartq_lcd_power_data = {
227 .set_power = smartq_lcd_power_set,
228 };
229
230 static struct platform_device smartq_lcd_power_device = {
231 .name = "platform-lcd",
232 .dev.parent = &s3c_device_fb.dev,
233 .dev.platform_data = &smartq_lcd_power_data,
234 };
235
236 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
237 { I2C_BOARD_INFO("wm8987", 0x1a), },
238 };
239
240 static struct platform_device *smartq_devices[] __initdata = {
241 &s3c_device_hsmmc1, /* Init iNAND first, ... */
242 &s3c_device_hsmmc0, /* ... then the external SD card */
243 &s3c_device_hsmmc2,
244 &s3c_device_adc,
245 &s3c_device_fb,
246 &s3c_device_hwmon,
247 &s3c_device_i2c0,
248 &s3c_device_ohci,
249 &s3c_device_rtc,
250 &samsung_device_pwm,
251 &s3c_device_ts,
252 &s3c_device_usb_hsotg,
253 &s3c64xx_device_iis0,
254 &smartq_backlight_device,
255 &smartq_lcd_control_device,
256 &smartq_lcd_power_device,
257 &smartq_usb_otg_vbus_dev,
258 };
259
smartq_lcd_mode_set(void)260 static void __init smartq_lcd_mode_set(void)
261 {
262 u32 tmp;
263
264 /* set the LCD type */
265 tmp = __raw_readl(S3C64XX_SPCON);
266 tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
267 tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
268 __raw_writel(tmp, S3C64XX_SPCON);
269
270 /* remove the LCD bypass */
271 tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
272 tmp &= ~MIFPCON_LCD_BYPASS;
273 __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
274 }
275
smartq_power_off(void)276 static void smartq_power_off(void)
277 {
278 gpio_direction_output(S3C64XX_GPK(15), 1);
279 }
280
smartq_power_off_init(void)281 static int __init smartq_power_off_init(void)
282 {
283 int ret;
284
285 ret = gpio_request(S3C64XX_GPK(15), "Power control");
286 if (ret < 0) {
287 pr_err("%s: failed to get GPK15\n", __func__);
288 return ret;
289 }
290
291 /* leave power on */
292 gpio_direction_output(S3C64XX_GPK(15), 0);
293
294 pm_power_off = smartq_power_off;
295
296 return ret;
297 }
298
smartq_usb_host_init(void)299 static int __init smartq_usb_host_init(void)
300 {
301 int ret;
302
303 ret = gpio_request(S3C64XX_GPL(0), "USB power control");
304 if (ret < 0) {
305 pr_err("%s: failed to get GPL0\n", __func__);
306 return ret;
307 }
308
309 ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
310 if (ret < 0) {
311 pr_err("%s: failed to get GPL1\n", __func__);
312 goto err;
313 }
314
315 if (!machine_is_smartq5()) {
316 /* This isn't present on a SmartQ 5 board */
317 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
318 if (ret < 0) {
319 pr_err("%s: failed to get GPL10\n", __func__);
320 goto err2;
321 }
322 }
323
324 /* turn power off */
325 gpio_direction_output(S3C64XX_GPL(0), 0);
326 gpio_direction_output(S3C64XX_GPL(1), 0);
327 if (!machine_is_smartq5())
328 gpio_direction_input(S3C64XX_GPL(10));
329
330 s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
331
332 return 0;
333
334 err2:
335 gpio_free(S3C64XX_GPL(1));
336 err:
337 gpio_free(S3C64XX_GPL(0));
338 return ret;
339 }
340
smartq_wifi_init(void)341 static int __init smartq_wifi_init(void)
342 {
343 int ret;
344
345 ret = gpio_request(S3C64XX_GPK(1), "wifi control");
346 if (ret < 0) {
347 pr_err("%s: failed to get GPK1\n", __func__);
348 return ret;
349 }
350
351 ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
352 if (ret < 0) {
353 pr_err("%s: failed to get GPK2\n", __func__);
354 gpio_free(S3C64XX_GPK(1));
355 return ret;
356 }
357
358 /* turn power on */
359 gpio_direction_output(S3C64XX_GPK(1), 1);
360
361 /* reset device */
362 gpio_direction_output(S3C64XX_GPK(2), 0);
363 mdelay(100);
364 gpio_set_value(S3C64XX_GPK(2), 1);
365 gpio_direction_input(S3C64XX_GPK(2));
366
367 return 0;
368 }
369
370 static struct map_desc smartq_iodesc[] __initdata = {};
smartq_map_io(void)371 void __init smartq_map_io(void)
372 {
373 s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
374 s3c64xx_set_xtal_freq(12000000);
375 s3c64xx_set_xusbxti_freq(12000000);
376 s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
377 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
378
379 smartq_lcd_mode_set();
380 }
381
smartq_machine_init(void)382 void __init smartq_machine_init(void)
383 {
384 s3c_i2c0_set_platdata(NULL);
385 s3c_hsotg_set_platdata(&smartq_hsotg_pdata);
386 s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
387 s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
388 s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
389 s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
390
391 i2c_register_board_info(0, smartq_i2c_devs,
392 ARRAY_SIZE(smartq_i2c_devs));
393
394 WARN_ON(smartq_lcd_setup_gpio());
395 WARN_ON(smartq_power_off_init());
396 WARN_ON(smartq_usb_host_init());
397 WARN_ON(smartq_wifi_init());
398
399 platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
400 }
401