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.h>
18 #include <linux/pwm_backlight.h>
19 #include <linux/serial_core.h>
20 #include <linux/serial_s3c.h>
21 #include <linux/spi/spi_gpio.h>
22 #include <linux/usb/gpio_vbus.h>
23 #include <linux/platform_data/s3c-hsotg.h>
24
25 #include <asm/mach-types.h>
26 #include <asm/mach/map.h>
27
28 #include <mach/map.h>
29 #include <mach/regs-gpio.h>
30 #include <mach/gpio-samsung.h>
31
32 #include <plat/cpu.h>
33 #include <plat/devs.h>
34 #include <linux/platform_data/i2c-s3c2410.h>
35 #include <plat/gpio-cfg.h>
36 #include <linux/platform_data/hwmon-s3c.h>
37 #include <linux/platform_data/usb-ohci-s3c2410.h>
38 #include <plat/sdhci.h>
39 #include <linux/platform_data/touchscreen-s3c2410.h>
40
41 #include <video/platform_lcd.h>
42 #include <plat/samsung-time.h>
43
44 #include "common.h"
45 #include "regs-modem.h"
46
47 #define UCON S3C2410_UCON_DEFAULT
48 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
49 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
50
51 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
52 [0] = {
53 .hwport = 0,
54 .flags = 0,
55 .ucon = UCON,
56 .ulcon = ULCON,
57 .ufcon = UFCON,
58 },
59 [1] = {
60 .hwport = 1,
61 .flags = 0,
62 .ucon = UCON,
63 .ulcon = ULCON,
64 .ufcon = UFCON,
65 },
66 [2] = {
67 .hwport = 2,
68 .flags = 0,
69 .ucon = UCON,
70 .ulcon = ULCON,
71 .ufcon = UFCON,
72 },
73 };
74
smartq_usb_host_powercontrol(int port,int to)75 static void smartq_usb_host_powercontrol(int port, int to)
76 {
77 pr_debug("%s(%d, %d)\n", __func__, port, to);
78
79 if (port == 0) {
80 gpio_set_value(S3C64XX_GPL(0), to);
81 gpio_set_value(S3C64XX_GPL(1), to);
82 }
83 }
84
smartq_usb_host_ocirq(int irq,void * pw)85 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
86 {
87 struct s3c2410_hcd_info *info = pw;
88
89 if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
90 pr_debug("%s: over-current irq (oc detected)\n", __func__);
91 s3c2410_usb_report_oc(info, 3);
92 } else {
93 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
94 s3c2410_usb_report_oc(info, 0);
95 }
96
97 return IRQ_HANDLED;
98 }
99
smartq_usb_host_enableoc(struct s3c2410_hcd_info * info,int on)100 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
101 {
102 int ret;
103
104 /* This isn't present on a SmartQ 5 board */
105 if (machine_is_smartq5())
106 return;
107
108 if (on) {
109 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
110 smartq_usb_host_ocirq,
111 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
112 "USB host overcurrent", info);
113 if (ret != 0)
114 pr_err("failed to request usb oc irq: %d\n", ret);
115 } else {
116 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
117 }
118 }
119
120 static struct s3c2410_hcd_info smartq_usb_host_info = {
121 .port[0] = {
122 .flags = S3C_HCDFLG_USED
123 },
124 .port[1] = {
125 .flags = 0
126 },
127
128 .power_control = smartq_usb_host_powercontrol,
129 .enable_oc = smartq_usb_host_enableoc,
130 };
131
132 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
133 .gpio_vbus = S3C64XX_GPL(9),
134 .gpio_pullup = -1,
135 .gpio_vbus_inverted = true,
136 };
137
138 static struct platform_device smartq_usb_otg_vbus_dev = {
139 .name = "gpio-vbus",
140 .dev.platform_data = &smartq_usb_otg_vbus_pdata,
141 };
142
143 static struct pwm_lookup smartq_pwm_lookup[] = {
144 PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
145 1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
146 };
147
smartq_bl_init(struct device * dev)148 static int smartq_bl_init(struct device *dev)
149 {
150 s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
151
152 return 0;
153 }
154
155 static struct platform_pwm_backlight_data smartq_backlight_data = {
156 .max_brightness = 1000,
157 .dft_brightness = 600,
158 .enable_gpio = -1,
159 .init = smartq_bl_init,
160 };
161
162 static struct platform_device smartq_backlight_device = {
163 .name = "pwm-backlight",
164 .dev = {
165 .parent = &samsung_device_pwm.dev,
166 .platform_data = &smartq_backlight_data,
167 },
168 };
169
170 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
171 .delay = 65535,
172 .presc = 99,
173 .oversampling_shift = 4,
174 };
175
176 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
177 .max_width = 4,
178 .cd_type = S3C_SDHCI_CD_PERMANENT,
179 };
180
181 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
182 /* Battery voltage (?-4.2V) */
183 .in[0] = &(struct s3c_hwmon_chcfg) {
184 .name = "smartq:battery-voltage",
185 .mult = 3300,
186 .div = 2048,
187 },
188 /* Reference voltage (1.2V) */
189 .in[1] = &(struct s3c_hwmon_chcfg) {
190 .name = "smartq:reference-voltage",
191 .mult = 3300,
192 .div = 4096,
193 },
194 };
195
196 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
197
smartq_lcd_setup_gpio(void)198 static int __init smartq_lcd_setup_gpio(void)
199 {
200 int ret;
201
202 ret = gpio_request(S3C64XX_GPM(3), "LCD power");
203 if (ret < 0)
204 return ret;
205
206 /* turn power off */
207 gpio_direction_output(S3C64XX_GPM(3), 0);
208
209 return 0;
210 }
211
212 /* GPM0 -> CS */
213 static struct spi_gpio_platform_data smartq_lcd_control = {
214 .sck = S3C64XX_GPM(1),
215 .mosi = S3C64XX_GPM(2),
216 .miso = S3C64XX_GPM(2),
217 };
218
219 static struct platform_device smartq_lcd_control_device = {
220 .name = "spi-gpio",
221 .id = 1,
222 .dev.platform_data = &smartq_lcd_control,
223 };
224
smartq_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)225 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
226 {
227 gpio_direction_output(S3C64XX_GPM(3), power);
228 }
229
230 static struct plat_lcd_data smartq_lcd_power_data = {
231 .set_power = smartq_lcd_power_set,
232 };
233
234 static struct platform_device smartq_lcd_power_device = {
235 .name = "platform-lcd",
236 .dev.parent = &s3c_device_fb.dev,
237 .dev.platform_data = &smartq_lcd_power_data,
238 };
239
240 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
241 { I2C_BOARD_INFO("wm8987", 0x1a), },
242 };
243
244 static struct platform_device *smartq_devices[] __initdata = {
245 &s3c_device_hsmmc1, /* Init iNAND first, ... */
246 &s3c_device_hsmmc0, /* ... then the external SD card */
247 &s3c_device_hsmmc2,
248 &s3c_device_adc,
249 &s3c_device_fb,
250 &s3c_device_hwmon,
251 &s3c_device_i2c0,
252 &s3c_device_ohci,
253 &s3c_device_rtc,
254 &samsung_device_pwm,
255 &s3c_device_ts,
256 &s3c_device_usb_hsotg,
257 &s3c64xx_device_iis0,
258 &smartq_backlight_device,
259 &smartq_lcd_control_device,
260 &smartq_lcd_power_device,
261 &smartq_usb_otg_vbus_dev,
262 };
263
smartq_lcd_mode_set(void)264 static void __init smartq_lcd_mode_set(void)
265 {
266 u32 tmp;
267
268 /* set the LCD type */
269 tmp = __raw_readl(S3C64XX_SPCON);
270 tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
271 tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
272 __raw_writel(tmp, S3C64XX_SPCON);
273
274 /* remove the LCD bypass */
275 tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
276 tmp &= ~MIFPCON_LCD_BYPASS;
277 __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
278 }
279
smartq_power_off(void)280 static void smartq_power_off(void)
281 {
282 gpio_direction_output(S3C64XX_GPK(15), 1);
283 }
284
smartq_power_off_init(void)285 static int __init smartq_power_off_init(void)
286 {
287 int ret;
288
289 ret = gpio_request(S3C64XX_GPK(15), "Power control");
290 if (ret < 0) {
291 pr_err("%s: failed to get GPK15\n", __func__);
292 return ret;
293 }
294
295 /* leave power on */
296 gpio_direction_output(S3C64XX_GPK(15), 0);
297
298 pm_power_off = smartq_power_off;
299
300 return ret;
301 }
302
smartq_usb_host_init(void)303 static int __init smartq_usb_host_init(void)
304 {
305 int ret;
306
307 ret = gpio_request(S3C64XX_GPL(0), "USB power control");
308 if (ret < 0) {
309 pr_err("%s: failed to get GPL0\n", __func__);
310 return ret;
311 }
312
313 ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
314 if (ret < 0) {
315 pr_err("%s: failed to get GPL1\n", __func__);
316 goto err;
317 }
318
319 if (!machine_is_smartq5()) {
320 /* This isn't present on a SmartQ 5 board */
321 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
322 if (ret < 0) {
323 pr_err("%s: failed to get GPL10\n", __func__);
324 goto err2;
325 }
326 }
327
328 /* turn power off */
329 gpio_direction_output(S3C64XX_GPL(0), 0);
330 gpio_direction_output(S3C64XX_GPL(1), 0);
331 if (!machine_is_smartq5())
332 gpio_direction_input(S3C64XX_GPL(10));
333
334 s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
335
336 return 0;
337
338 err2:
339 gpio_free(S3C64XX_GPL(1));
340 err:
341 gpio_free(S3C64XX_GPL(0));
342 return ret;
343 }
344
smartq_wifi_init(void)345 static int __init smartq_wifi_init(void)
346 {
347 int ret;
348
349 ret = gpio_request(S3C64XX_GPK(1), "wifi control");
350 if (ret < 0) {
351 pr_err("%s: failed to get GPK1\n", __func__);
352 return ret;
353 }
354
355 ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
356 if (ret < 0) {
357 pr_err("%s: failed to get GPK2\n", __func__);
358 gpio_free(S3C64XX_GPK(1));
359 return ret;
360 }
361
362 /* turn power on */
363 gpio_direction_output(S3C64XX_GPK(1), 1);
364
365 /* reset device */
366 gpio_direction_output(S3C64XX_GPK(2), 0);
367 mdelay(100);
368 gpio_set_value(S3C64XX_GPK(2), 1);
369 gpio_direction_input(S3C64XX_GPK(2));
370
371 return 0;
372 }
373
374 static struct map_desc smartq_iodesc[] __initdata = {};
smartq_map_io(void)375 void __init smartq_map_io(void)
376 {
377 s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
378 s3c64xx_set_xtal_freq(12000000);
379 s3c64xx_set_xusbxti_freq(12000000);
380 s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
381 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
382
383 smartq_lcd_mode_set();
384 }
385
smartq_machine_init(void)386 void __init smartq_machine_init(void)
387 {
388 s3c_i2c0_set_platdata(NULL);
389 dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
390 s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
391 s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
392 s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
393 s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
394
395 i2c_register_board_info(0, smartq_i2c_devs,
396 ARRAY_SIZE(smartq_i2c_devs));
397
398 WARN_ON(smartq_lcd_setup_gpio());
399 WARN_ON(smartq_power_off_init());
400 WARN_ON(smartq_usb_host_init());
401 WARN_ON(smartq_wifi_init());
402
403 pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
404 platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
405 }
406