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/gpio/machine.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/pwm.h>
19 #include <linux/pwm_backlight.h>
20 #include <linux/serial_core.h>
21 #include <linux/serial_s3c.h>
22 #include <linux/spi/spi_gpio.h>
23 #include <linux/usb/gpio_vbus.h>
24 #include <linux/platform_data/s3c-hsotg.h>
25
26 #include <asm/mach-types.h>
27 #include <asm/mach/map.h>
28
29 #include <mach/map.h>
30 #include <mach/regs-gpio.h>
31 #include <mach/gpio-samsung.h>
32
33 #include <plat/cpu.h>
34 #include <plat/devs.h>
35 #include <linux/platform_data/i2c-s3c2410.h>
36 #include <plat/gpio-cfg.h>
37 #include <linux/platform_data/hwmon-s3c.h>
38 #include <linux/platform_data/usb-ohci-s3c2410.h>
39 #include <plat/sdhci.h>
40 #include <linux/platform_data/touchscreen-s3c2410.h>
41
42 #include <video/platform_lcd.h>
43 #include <plat/samsung-time.h>
44
45 #include "common.h"
46 #include "mach-smartq.h"
47 #include "regs-modem.h"
48
49 #define UCON S3C2410_UCON_DEFAULT
50 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
51 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
52
53 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
54 [0] = {
55 .hwport = 0,
56 .flags = 0,
57 .ucon = UCON,
58 .ulcon = ULCON,
59 .ufcon = UFCON,
60 },
61 [1] = {
62 .hwport = 1,
63 .flags = 0,
64 .ucon = UCON,
65 .ulcon = ULCON,
66 .ufcon = UFCON,
67 },
68 [2] = {
69 .hwport = 2,
70 .flags = 0,
71 .ucon = UCON,
72 .ulcon = ULCON,
73 .ufcon = UFCON,
74 },
75 };
76
smartq_usb_host_powercontrol(int port,int to)77 static void smartq_usb_host_powercontrol(int port, int to)
78 {
79 pr_debug("%s(%d, %d)\n", __func__, port, to);
80
81 if (port == 0) {
82 gpio_set_value(S3C64XX_GPL(0), to);
83 gpio_set_value(S3C64XX_GPL(1), to);
84 }
85 }
86
smartq_usb_host_ocirq(int irq,void * pw)87 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
88 {
89 struct s3c2410_hcd_info *info = pw;
90
91 if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
92 pr_debug("%s: over-current irq (oc detected)\n", __func__);
93 s3c2410_usb_report_oc(info, 3);
94 } else {
95 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
96 s3c2410_usb_report_oc(info, 0);
97 }
98
99 return IRQ_HANDLED;
100 }
101
smartq_usb_host_enableoc(struct s3c2410_hcd_info * info,int on)102 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
103 {
104 int ret;
105
106 /* This isn't present on a SmartQ 5 board */
107 if (machine_is_smartq5())
108 return;
109
110 if (on) {
111 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
112 smartq_usb_host_ocirq,
113 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
114 "USB host overcurrent", info);
115 if (ret != 0)
116 pr_err("failed to request usb oc irq: %d\n", ret);
117 } else {
118 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
119 }
120 }
121
122 static struct s3c2410_hcd_info smartq_usb_host_info = {
123 .port[0] = {
124 .flags = S3C_HCDFLG_USED
125 },
126 .port[1] = {
127 .flags = 0
128 },
129
130 .power_control = smartq_usb_host_powercontrol,
131 .enable_oc = smartq_usb_host_enableoc,
132 };
133
134 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
135 .gpio_vbus = S3C64XX_GPL(9),
136 .gpio_pullup = -1,
137 .gpio_vbus_inverted = true,
138 };
139
140 static struct platform_device smartq_usb_otg_vbus_dev = {
141 .name = "gpio-vbus",
142 .dev.platform_data = &smartq_usb_otg_vbus_pdata,
143 };
144
145 static struct pwm_lookup smartq_pwm_lookup[] = {
146 PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
147 1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
148 };
149
smartq_bl_init(struct device * dev)150 static int smartq_bl_init(struct device *dev)
151 {
152 s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
153
154 return 0;
155 }
156
157 static struct platform_pwm_backlight_data smartq_backlight_data = {
158 .max_brightness = 1000,
159 .dft_brightness = 600,
160 .enable_gpio = -1,
161 .init = smartq_bl_init,
162 };
163
164 static struct platform_device smartq_backlight_device = {
165 .name = "pwm-backlight",
166 .dev = {
167 .parent = &samsung_device_pwm.dev,
168 .platform_data = &smartq_backlight_data,
169 },
170 };
171
172 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
173 .delay = 65535,
174 .presc = 99,
175 .oversampling_shift = 4,
176 };
177
178 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
179 .max_width = 4,
180 .cd_type = S3C_SDHCI_CD_PERMANENT,
181 };
182
183 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
184 /* Battery voltage (?-4.2V) */
185 .in[0] = &(struct s3c_hwmon_chcfg) {
186 .name = "smartq:battery-voltage",
187 .mult = 3300,
188 .div = 2048,
189 },
190 /* Reference voltage (1.2V) */
191 .in[1] = &(struct s3c_hwmon_chcfg) {
192 .name = "smartq:reference-voltage",
193 .mult = 3300,
194 .div = 4096,
195 },
196 };
197
198 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
199
smartq_lcd_setup_gpio(void)200 static int __init smartq_lcd_setup_gpio(void)
201 {
202 int ret;
203
204 ret = gpio_request(S3C64XX_GPM(3), "LCD power");
205 if (ret < 0)
206 return ret;
207
208 /* turn power off */
209 gpio_direction_output(S3C64XX_GPM(3), 0);
210
211 return 0;
212 }
213
214 /* GPM0 -> CS */
215 static struct spi_gpio_platform_data smartq_lcd_control = {
216 .sck = S3C64XX_GPM(1),
217 .mosi = S3C64XX_GPM(2),
218 .miso = S3C64XX_GPM(2),
219 };
220
221 static struct platform_device smartq_lcd_control_device = {
222 .name = "spi-gpio",
223 .id = 1,
224 .dev.platform_data = &smartq_lcd_control,
225 };
226
smartq_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)227 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
228 {
229 gpio_direction_output(S3C64XX_GPM(3), power);
230 }
231
232 static struct plat_lcd_data smartq_lcd_power_data = {
233 .set_power = smartq_lcd_power_set,
234 };
235
236 static struct platform_device smartq_lcd_power_device = {
237 .name = "platform-lcd",
238 .dev.parent = &s3c_device_fb.dev,
239 .dev.platform_data = &smartq_lcd_power_data,
240 };
241
242 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
243 { I2C_BOARD_INFO("wm8987", 0x1a), },
244 };
245
246 static struct platform_device *smartq_devices[] __initdata = {
247 &s3c_device_hsmmc1, /* Init iNAND first, ... */
248 &s3c_device_hsmmc0, /* ... then the external SD card */
249 &s3c_device_hsmmc2,
250 &s3c_device_adc,
251 &s3c_device_fb,
252 &s3c_device_hwmon,
253 &s3c_device_i2c0,
254 &s3c_device_ohci,
255 &s3c_device_rtc,
256 &samsung_device_pwm,
257 &s3c_device_usb_hsotg,
258 &s3c64xx_device_iis0,
259 &smartq_backlight_device,
260 &smartq_lcd_control_device,
261 &smartq_lcd_power_device,
262 &smartq_usb_otg_vbus_dev,
263 };
264
smartq_lcd_mode_set(void)265 static void __init smartq_lcd_mode_set(void)
266 {
267 u32 tmp;
268
269 /* set the LCD type */
270 tmp = __raw_readl(S3C64XX_SPCON);
271 tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
272 tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
273 __raw_writel(tmp, S3C64XX_SPCON);
274
275 /* remove the LCD bypass */
276 tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
277 tmp &= ~MIFPCON_LCD_BYPASS;
278 __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
279 }
280
smartq_power_off(void)281 static void smartq_power_off(void)
282 {
283 gpio_direction_output(S3C64XX_GPK(15), 1);
284 }
285
smartq_power_off_init(void)286 static int __init smartq_power_off_init(void)
287 {
288 int ret;
289
290 ret = gpio_request(S3C64XX_GPK(15), "Power control");
291 if (ret < 0) {
292 pr_err("%s: failed to get GPK15\n", __func__);
293 return ret;
294 }
295
296 /* leave power on */
297 gpio_direction_output(S3C64XX_GPK(15), 0);
298
299 pm_power_off = smartq_power_off;
300
301 return ret;
302 }
303
smartq_usb_host_init(void)304 static int __init smartq_usb_host_init(void)
305 {
306 int ret;
307
308 ret = gpio_request(S3C64XX_GPL(0), "USB power control");
309 if (ret < 0) {
310 pr_err("%s: failed to get GPL0\n", __func__);
311 return ret;
312 }
313
314 ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
315 if (ret < 0) {
316 pr_err("%s: failed to get GPL1\n", __func__);
317 goto err;
318 }
319
320 if (!machine_is_smartq5()) {
321 /* This isn't present on a SmartQ 5 board */
322 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
323 if (ret < 0) {
324 pr_err("%s: failed to get GPL10\n", __func__);
325 goto err2;
326 }
327 }
328
329 /* turn power off */
330 gpio_direction_output(S3C64XX_GPL(0), 0);
331 gpio_direction_output(S3C64XX_GPL(1), 0);
332 if (!machine_is_smartq5())
333 gpio_direction_input(S3C64XX_GPL(10));
334
335 s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
336
337 return 0;
338
339 err2:
340 gpio_free(S3C64XX_GPL(1));
341 err:
342 gpio_free(S3C64XX_GPL(0));
343 return ret;
344 }
345
smartq_wifi_init(void)346 static int __init smartq_wifi_init(void)
347 {
348 int ret;
349
350 ret = gpio_request(S3C64XX_GPK(1), "wifi control");
351 if (ret < 0) {
352 pr_err("%s: failed to get GPK1\n", __func__);
353 return ret;
354 }
355
356 ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
357 if (ret < 0) {
358 pr_err("%s: failed to get GPK2\n", __func__);
359 gpio_free(S3C64XX_GPK(1));
360 return ret;
361 }
362
363 /* turn power on */
364 gpio_direction_output(S3C64XX_GPK(1), 1);
365
366 /* reset device */
367 gpio_direction_output(S3C64XX_GPK(2), 0);
368 mdelay(100);
369 gpio_set_value(S3C64XX_GPK(2), 1);
370 gpio_direction_input(S3C64XX_GPK(2));
371
372 return 0;
373 }
374
375 static struct map_desc smartq_iodesc[] __initdata = {};
smartq_map_io(void)376 void __init smartq_map_io(void)
377 {
378 s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
379 s3c64xx_set_xtal_freq(12000000);
380 s3c64xx_set_xusbxti_freq(12000000);
381 s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
382 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
383
384 smartq_lcd_mode_set();
385 }
386
387 static struct gpiod_lookup_table smartq_audio_gpios = {
388 .dev_id = "smartq-audio",
389 .table = {
390 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
391 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
392 { },
393 },
394 };
395
smartq_machine_init(void)396 void __init smartq_machine_init(void)
397 {
398 s3c_i2c0_set_platdata(NULL);
399 dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
400 s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
401 s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
402 s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
403 s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
404
405 i2c_register_board_info(0, smartq_i2c_devs,
406 ARRAY_SIZE(smartq_i2c_devs));
407
408 WARN_ON(smartq_lcd_setup_gpio());
409 WARN_ON(smartq_power_off_init());
410 WARN_ON(smartq_usb_host_init());
411 WARN_ON(smartq_wifi_init());
412
413 pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
414 platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
415
416 gpiod_add_lookup_table(&smartq_audio_gpios);
417 platform_device_register_simple("smartq-audio", -1, NULL, 0);
418 }
419