1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright (C) 2010 Maurus Cuelenaere
4
5 #include <linux/delay.h>
6 #include <linux/fb.h>
7 #include <linux/gpio.h>
8 #include <linux/gpio/machine.h>
9 #include <linux/init.h>
10 #include <linux/platform_device.h>
11 #include <linux/pwm.h>
12 #include <linux/pwm_backlight.h>
13 #include <linux/serial_core.h>
14 #include <linux/serial_s3c.h>
15 #include <linux/spi/spi_gpio.h>
16 #include <linux/usb/gpio_vbus.h>
17 #include <linux/platform_data/s3c-hsotg.h>
18
19 #include <asm/mach-types.h>
20 #include <asm/mach/map.h>
21
22 #include <mach/map.h>
23 #include <mach/regs-gpio.h>
24 #include <mach/gpio-samsung.h>
25
26 #include <plat/cpu.h>
27 #include <plat/devs.h>
28 #include <linux/platform_data/i2c-s3c2410.h>
29 #include <plat/gpio-cfg.h>
30 #include <linux/platform_data/hwmon-s3c.h>
31 #include <linux/platform_data/usb-ohci-s3c2410.h>
32 #include <plat/sdhci.h>
33 #include <linux/platform_data/touchscreen-s3c2410.h>
34
35 #include <video/platform_lcd.h>
36 #include <plat/samsung-time.h>
37
38 #include "common.h"
39 #include "mach-smartq.h"
40 #include "regs-modem.h"
41
42 #define UCON S3C2410_UCON_DEFAULT
43 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
44 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
45
46 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
47 [0] = {
48 .hwport = 0,
49 .flags = 0,
50 .ucon = UCON,
51 .ulcon = ULCON,
52 .ufcon = UFCON,
53 },
54 [1] = {
55 .hwport = 1,
56 .flags = 0,
57 .ucon = UCON,
58 .ulcon = ULCON,
59 .ufcon = UFCON,
60 },
61 [2] = {
62 .hwport = 2,
63 .flags = 0,
64 .ucon = UCON,
65 .ulcon = ULCON,
66 .ufcon = UFCON,
67 },
68 };
69
smartq_usb_host_powercontrol(int port,int to)70 static void smartq_usb_host_powercontrol(int port, int to)
71 {
72 pr_debug("%s(%d, %d)\n", __func__, port, to);
73
74 if (port == 0) {
75 gpio_set_value(S3C64XX_GPL(0), to);
76 gpio_set_value(S3C64XX_GPL(1), to);
77 }
78 }
79
smartq_usb_host_ocirq(int irq,void * pw)80 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
81 {
82 struct s3c2410_hcd_info *info = pw;
83
84 if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
85 pr_debug("%s: over-current irq (oc detected)\n", __func__);
86 s3c2410_usb_report_oc(info, 3);
87 } else {
88 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
89 s3c2410_usb_report_oc(info, 0);
90 }
91
92 return IRQ_HANDLED;
93 }
94
smartq_usb_host_enableoc(struct s3c2410_hcd_info * info,int on)95 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
96 {
97 int ret;
98
99 /* This isn't present on a SmartQ 5 board */
100 if (machine_is_smartq5())
101 return;
102
103 if (on) {
104 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
105 smartq_usb_host_ocirq,
106 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
107 "USB host overcurrent", info);
108 if (ret != 0)
109 pr_err("failed to request usb oc irq: %d\n", ret);
110 } else {
111 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
112 }
113 }
114
115 static struct s3c2410_hcd_info smartq_usb_host_info = {
116 .port[0] = {
117 .flags = S3C_HCDFLG_USED
118 },
119 .port[1] = {
120 .flags = 0
121 },
122
123 .power_control = smartq_usb_host_powercontrol,
124 .enable_oc = smartq_usb_host_enableoc,
125 };
126
127 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
128 .gpio_vbus = S3C64XX_GPL(9),
129 .gpio_pullup = -1,
130 .gpio_vbus_inverted = true,
131 };
132
133 static struct platform_device smartq_usb_otg_vbus_dev = {
134 .name = "gpio-vbus",
135 .dev.platform_data = &smartq_usb_otg_vbus_pdata,
136 };
137
138 static struct pwm_lookup smartq_pwm_lookup[] = {
139 PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
140 1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
141 };
142
smartq_bl_init(struct device * dev)143 static int smartq_bl_init(struct device *dev)
144 {
145 s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
146
147 return 0;
148 }
149
150 static struct platform_pwm_backlight_data smartq_backlight_data = {
151 .max_brightness = 1000,
152 .dft_brightness = 600,
153 .enable_gpio = -1,
154 .init = smartq_bl_init,
155 };
156
157 static struct platform_device smartq_backlight_device = {
158 .name = "pwm-backlight",
159 .dev = {
160 .parent = &samsung_device_pwm.dev,
161 .platform_data = &smartq_backlight_data,
162 },
163 };
164
165 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
166 .delay = 65535,
167 .presc = 99,
168 .oversampling_shift = 4,
169 };
170
171 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
172 .max_width = 4,
173 .cd_type = S3C_SDHCI_CD_PERMANENT,
174 };
175
176 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
177 /* Battery voltage (?-4.2V) */
178 .in[0] = &(struct s3c_hwmon_chcfg) {
179 .name = "smartq:battery-voltage",
180 .mult = 3300,
181 .div = 2048,
182 },
183 /* Reference voltage (1.2V) */
184 .in[1] = &(struct s3c_hwmon_chcfg) {
185 .name = "smartq:reference-voltage",
186 .mult = 3300,
187 .div = 4096,
188 },
189 };
190
191 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
192
smartq_lcd_setup_gpio(void)193 static int __init smartq_lcd_setup_gpio(void)
194 {
195 int ret;
196
197 ret = gpio_request(S3C64XX_GPM(3), "LCD power");
198 if (ret < 0)
199 return ret;
200
201 /* turn power off */
202 gpio_direction_output(S3C64XX_GPM(3), 0);
203
204 return 0;
205 }
206
207 /* GPM0 -> CS */
208 static struct spi_gpio_platform_data smartq_lcd_control = {
209 .num_chipselect = 1,
210 };
211
212 static struct platform_device smartq_lcd_control_device = {
213 .name = "spi_gpio",
214 .id = 1,
215 .dev.platform_data = &smartq_lcd_control,
216 };
217
218 static struct gpiod_lookup_table smartq_lcd_control_gpiod_table = {
219 .dev_id = "spi_gpio",
220 .table = {
221 GPIO_LOOKUP("GPIOM", 1,
222 "sck", GPIO_ACTIVE_HIGH),
223 GPIO_LOOKUP("GPIOM", 2,
224 "mosi", GPIO_ACTIVE_HIGH),
225 GPIO_LOOKUP("GPIOM", 3,
226 "miso", GPIO_ACTIVE_HIGH),
227 GPIO_LOOKUP("GPIOM", 0,
228 "cs", GPIO_ACTIVE_HIGH),
229 { },
230 },
231 };
232
smartq_lcd_power_set(struct plat_lcd_data * pd,unsigned int power)233 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
234 {
235 gpio_direction_output(S3C64XX_GPM(3), power);
236 }
237
238 static struct plat_lcd_data smartq_lcd_power_data = {
239 .set_power = smartq_lcd_power_set,
240 };
241
242 static struct platform_device smartq_lcd_power_device = {
243 .name = "platform-lcd",
244 .dev.parent = &s3c_device_fb.dev,
245 .dev.platform_data = &smartq_lcd_power_data,
246 };
247
248 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
249 { I2C_BOARD_INFO("wm8987", 0x1a), },
250 };
251
252 static struct platform_device *smartq_devices[] __initdata = {
253 &s3c_device_hsmmc1, /* Init iNAND first, ... */
254 &s3c_device_hsmmc0, /* ... then the external SD card */
255 &s3c_device_hsmmc2,
256 &s3c_device_adc,
257 &s3c_device_fb,
258 &s3c_device_hwmon,
259 &s3c_device_i2c0,
260 &s3c_device_ohci,
261 &s3c_device_rtc,
262 &samsung_device_pwm,
263 &s3c_device_usb_hsotg,
264 &s3c64xx_device_iis0,
265 &smartq_backlight_device,
266 &smartq_lcd_control_device,
267 &smartq_lcd_power_device,
268 &smartq_usb_otg_vbus_dev,
269 };
270
smartq_lcd_mode_set(void)271 static void __init smartq_lcd_mode_set(void)
272 {
273 u32 tmp;
274
275 /* set the LCD type */
276 tmp = __raw_readl(S3C64XX_SPCON);
277 tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
278 tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
279 __raw_writel(tmp, S3C64XX_SPCON);
280
281 /* remove the LCD bypass */
282 tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
283 tmp &= ~MIFPCON_LCD_BYPASS;
284 __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
285 }
286
smartq_power_off(void)287 static void smartq_power_off(void)
288 {
289 gpio_direction_output(S3C64XX_GPK(15), 1);
290 }
291
smartq_power_off_init(void)292 static int __init smartq_power_off_init(void)
293 {
294 int ret;
295
296 ret = gpio_request(S3C64XX_GPK(15), "Power control");
297 if (ret < 0) {
298 pr_err("%s: failed to get GPK15\n", __func__);
299 return ret;
300 }
301
302 /* leave power on */
303 gpio_direction_output(S3C64XX_GPK(15), 0);
304
305 pm_power_off = smartq_power_off;
306
307 return ret;
308 }
309
smartq_usb_host_init(void)310 static int __init smartq_usb_host_init(void)
311 {
312 int ret;
313
314 ret = gpio_request(S3C64XX_GPL(0), "USB power control");
315 if (ret < 0) {
316 pr_err("%s: failed to get GPL0\n", __func__);
317 return ret;
318 }
319
320 ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
321 if (ret < 0) {
322 pr_err("%s: failed to get GPL1\n", __func__);
323 goto err;
324 }
325
326 if (!machine_is_smartq5()) {
327 /* This isn't present on a SmartQ 5 board */
328 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
329 if (ret < 0) {
330 pr_err("%s: failed to get GPL10\n", __func__);
331 goto err2;
332 }
333 }
334
335 /* turn power off */
336 gpio_direction_output(S3C64XX_GPL(0), 0);
337 gpio_direction_output(S3C64XX_GPL(1), 0);
338 if (!machine_is_smartq5())
339 gpio_direction_input(S3C64XX_GPL(10));
340
341 s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
342
343 return 0;
344
345 err2:
346 gpio_free(S3C64XX_GPL(1));
347 err:
348 gpio_free(S3C64XX_GPL(0));
349 return ret;
350 }
351
smartq_wifi_init(void)352 static int __init smartq_wifi_init(void)
353 {
354 int ret;
355
356 ret = gpio_request(S3C64XX_GPK(1), "wifi control");
357 if (ret < 0) {
358 pr_err("%s: failed to get GPK1\n", __func__);
359 return ret;
360 }
361
362 ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
363 if (ret < 0) {
364 pr_err("%s: failed to get GPK2\n", __func__);
365 gpio_free(S3C64XX_GPK(1));
366 return ret;
367 }
368
369 /* turn power on */
370 gpio_direction_output(S3C64XX_GPK(1), 1);
371
372 /* reset device */
373 gpio_direction_output(S3C64XX_GPK(2), 0);
374 mdelay(100);
375 gpio_set_value(S3C64XX_GPK(2), 1);
376 gpio_direction_input(S3C64XX_GPK(2));
377
378 return 0;
379 }
380
381 static struct map_desc smartq_iodesc[] __initdata = {};
smartq_map_io(void)382 void __init smartq_map_io(void)
383 {
384 s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
385 s3c64xx_set_xtal_freq(12000000);
386 s3c64xx_set_xusbxti_freq(12000000);
387 s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
388 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
389
390 smartq_lcd_mode_set();
391 }
392
393 static struct gpiod_lookup_table smartq_audio_gpios = {
394 .dev_id = "smartq-audio",
395 .table = {
396 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
397 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
398 { },
399 },
400 };
401
smartq_machine_init(void)402 void __init smartq_machine_init(void)
403 {
404 s3c_i2c0_set_platdata(NULL);
405 dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
406 s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
407 s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
408 s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
409 s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
410
411 i2c_register_board_info(0, smartq_i2c_devs,
412 ARRAY_SIZE(smartq_i2c_devs));
413
414 WARN_ON(smartq_lcd_setup_gpio());
415 WARN_ON(smartq_power_off_init());
416 WARN_ON(smartq_usb_host_init());
417 WARN_ON(smartq_wifi_init());
418
419 pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
420 gpiod_add_lookup_table(&smartq_lcd_control_gpiod_table);
421 platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
422
423 gpiod_add_lookup_table(&smartq_audio_gpios);
424 platform_device_register_simple("smartq-audio", -1, NULL, 0);
425 }
426