1 // SPDX-License-Identifier: GPL-2.0
3 // Copyright (c) 2006-2009 Victor Chukhantsev, Denis Grigoriev,
4 // Copyright (c) 2007-2010 Vasily Khoruzhick
6 // based on smdk2440 written by Ben Dooks
8 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/interrupt.h>
11 #include <linux/list.h>
12 #include <linux/memblock.h>
13 #include <linux/delay.h>
14 #include <linux/timer.h>
15 #include <linux/init.h>
16 #include <linux/gpio.h>
17 #include <linux/gpio/machine.h>
18 #include <linux/platform_device.h>
19 #include <linux/serial_core.h>
20 #include <linux/serial_s3c.h>
21 #include <linux/input.h>
22 #include <linux/gpio_keys.h>
23 #include <linux/device.h>
24 #include <linux/pda_power.h>
25 #include <linux/pwm_backlight.h>
26 #include <linux/pwm.h>
27 #include <linux/s3c_adc_battery.h>
28 #include <linux/leds.h>
29 #include <linux/i2c.h>
31 #include <linux/mtd/mtd.h>
32 #include <linux/mtd/partitions.h>
34 #include <linux/mmc/host.h>
36 #include <asm/mach-types.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
40 #include <linux/platform_data/i2c-s3c2410.h>
41 #include <linux/platform_data/mmc-s3cmci.h>
42 #include <linux/platform_data/mtd-nand-s3c2410.h>
43 #include <linux/platform_data/touchscreen-s3c2410.h>
44 #include <linux/platform_data/usb-s3c2410_udc.h>
46 #include <sound/uda1380.h>
49 #include <mach/regs-gpio.h>
50 #include <mach/regs-lcd.h>
51 #include <mach/gpio-samsung.h>
54 #include <plat/devs.h>
56 #include <plat/samsung-time.h>
57 #include <plat/gpio-cfg.h>
62 #define LCD_PWM_PERIOD 192960
63 #define LCD_PWM_DUTY 127353
65 static struct map_desc rx1950_iodesc[] __initdata = {
68 static struct s3c2410_uartcfg rx1950_uartcfgs[] __initdata = {
75 .clk_sel = S3C2410_UCON_CLKSEL3,
83 .clk_sel = S3C2410_UCON_CLKSEL3,
92 .clk_sel = S3C2410_UCON_CLKSEL3,
96 static struct s3c2410fb_display rx1950_display = {
97 .type = S3C2410_LCDCON1_TFT,
112 .lcdcon5 = S3C2410_LCDCON5_FRM565 |
113 S3C2410_LCDCON5_INVVCLK |
114 S3C2410_LCDCON5_INVVLINE |
115 S3C2410_LCDCON5_INVVFRAME |
116 S3C2410_LCDCON5_HWSWP |
122 static int power_supply_init(struct device *dev)
124 return gpio_request(S3C2410_GPF(2), "cable plugged");
127 static int rx1950_is_ac_online(void)
129 return !gpio_get_value(S3C2410_GPF(2));
132 static void power_supply_exit(struct device *dev)
134 gpio_free(S3C2410_GPF(2));
137 static char *rx1950_supplicants[] = {
141 static struct pda_power_pdata power_supply_info = {
142 .init = power_supply_init,
143 .is_ac_online = rx1950_is_ac_online,
144 .exit = power_supply_exit,
145 .supplied_to = rx1950_supplicants,
146 .num_supplicants = ARRAY_SIZE(rx1950_supplicants),
149 static struct resource power_supply_resources[] = {
150 [0] = DEFINE_RES_NAMED(IRQ_EINT2, 1, "ac", IORESOURCE_IRQ \
151 | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE),
154 static struct platform_device power_supply = {
161 .resource = power_supply_resources,
162 .num_resources = ARRAY_SIZE(power_supply_resources),
165 static const struct s3c_adc_bat_thresh bat_lut_noac[] = {
166 { .volt = 4100, .cur = 156, .level = 100},
167 { .volt = 4050, .cur = 156, .level = 95},
168 { .volt = 4025, .cur = 141, .level = 90},
169 { .volt = 3995, .cur = 144, .level = 85},
170 { .volt = 3957, .cur = 162, .level = 80},
171 { .volt = 3931, .cur = 147, .level = 75},
172 { .volt = 3902, .cur = 147, .level = 70},
173 { .volt = 3863, .cur = 153, .level = 65},
174 { .volt = 3838, .cur = 150, .level = 60},
175 { .volt = 3800, .cur = 153, .level = 55},
176 { .volt = 3765, .cur = 153, .level = 50},
177 { .volt = 3748, .cur = 172, .level = 45},
178 { .volt = 3740, .cur = 153, .level = 40},
179 { .volt = 3714, .cur = 175, .level = 35},
180 { .volt = 3710, .cur = 156, .level = 30},
181 { .volt = 3963, .cur = 156, .level = 25},
182 { .volt = 3672, .cur = 178, .level = 20},
183 { .volt = 3651, .cur = 178, .level = 15},
184 { .volt = 3629, .cur = 178, .level = 10},
185 { .volt = 3612, .cur = 162, .level = 5},
186 { .volt = 3605, .cur = 162, .level = 0},
189 static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
190 { .volt = 4200, .cur = 0, .level = 100},
191 { .volt = 4190, .cur = 0, .level = 99},
192 { .volt = 4178, .cur = 0, .level = 95},
193 { .volt = 4110, .cur = 0, .level = 70},
194 { .volt = 4076, .cur = 0, .level = 65},
195 { .volt = 4046, .cur = 0, .level = 60},
196 { .volt = 4021, .cur = 0, .level = 55},
197 { .volt = 3999, .cur = 0, .level = 50},
198 { .volt = 3982, .cur = 0, .level = 45},
199 { .volt = 3965, .cur = 0, .level = 40},
200 { .volt = 3957, .cur = 0, .level = 35},
201 { .volt = 3948, .cur = 0, .level = 30},
202 { .volt = 3936, .cur = 0, .level = 25},
203 { .volt = 3927, .cur = 0, .level = 20},
204 { .volt = 3906, .cur = 0, .level = 15},
205 { .volt = 3880, .cur = 0, .level = 10},
206 { .volt = 3829, .cur = 0, .level = 5},
207 { .volt = 3820, .cur = 0, .level = 0},
210 static int rx1950_bat_init(void)
214 ret = gpio_request(S3C2410_GPJ(2), "rx1950-charger-enable-1");
217 ret = gpio_request(S3C2410_GPJ(3), "rx1950-charger-enable-2");
224 gpio_free(S3C2410_GPJ(2));
229 static void rx1950_bat_exit(void)
231 gpio_free(S3C2410_GPJ(2));
232 gpio_free(S3C2410_GPJ(3));
235 static void rx1950_enable_charger(void)
237 gpio_direction_output(S3C2410_GPJ(2), 1);
238 gpio_direction_output(S3C2410_GPJ(3), 1);
241 static void rx1950_disable_charger(void)
243 gpio_direction_output(S3C2410_GPJ(2), 0);
244 gpio_direction_output(S3C2410_GPJ(3), 0);
247 static DEFINE_SPINLOCK(rx1950_blink_spin);
249 static int rx1950_led_blink_set(struct gpio_desc *desc, int state,
250 unsigned long *delay_on, unsigned long *delay_off)
252 int gpio = desc_to_gpio(desc);
253 int blink_gpio, check_gpio;
257 blink_gpio = S3C2410_GPA(4);
258 check_gpio = S3C2410_GPA(3);
261 blink_gpio = S3C2410_GPA(3);
262 check_gpio = S3C2410_GPA(4);
269 if (delay_on && delay_off && !*delay_on && !*delay_off)
270 *delay_on = *delay_off = 500;
272 spin_lock(&rx1950_blink_spin);
275 case GPIO_LED_NO_BLINK_LOW:
276 case GPIO_LED_NO_BLINK_HIGH:
277 if (!gpio_get_value(check_gpio))
278 gpio_set_value(S3C2410_GPJ(6), 0);
279 gpio_set_value(blink_gpio, 0);
280 gpio_set_value(gpio, state);
283 gpio_set_value(gpio, 0);
284 gpio_set_value(S3C2410_GPJ(6), 1);
285 gpio_set_value(blink_gpio, 1);
289 spin_unlock(&rx1950_blink_spin);
294 static struct gpio_led rx1950_leds_desc[] = {
297 .default_trigger = "main-battery-full",
298 .gpio = S3C2410_GPA(6),
299 .retain_state_suspended = 1,
304 = "main-battery-charging-blink-full-solid",
305 .gpio = S3C2410_GPA(7),
306 .retain_state_suspended = 1,
310 .default_trigger = "rx1950-acx-mem",
311 .gpio = S3C2410_GPA(11),
312 .retain_state_suspended = 1,
316 static struct gpio_led_platform_data rx1950_leds_pdata = {
317 .num_leds = ARRAY_SIZE(rx1950_leds_desc),
318 .leds = rx1950_leds_desc,
319 .gpio_blink_set = rx1950_led_blink_set,
322 static struct platform_device rx1950_leds = {
326 .platform_data = &rx1950_leds_pdata,
330 static struct s3c_adc_bat_pdata rx1950_bat_cfg = {
331 .init = rx1950_bat_init,
332 .exit = rx1950_bat_exit,
333 .enable_charger = rx1950_enable_charger,
334 .disable_charger = rx1950_disable_charger,
335 .gpio_charge_finished = S3C2410_GPF(3),
336 .lut_noac = bat_lut_noac,
337 .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
338 .lut_acin = bat_lut_acin,
339 .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin),
341 .current_channel = 1,
343 .current_mult = 2900,
344 .internal_impedance = 200,
347 static struct platform_device rx1950_battery = {
348 .name = "s3c-adc-battery",
351 .parent = &s3c_device_adc.dev,
352 .platform_data = &rx1950_bat_cfg,
356 static struct s3c2410fb_mach_info rx1950_lcd_cfg = {
357 .displays = &rx1950_display,
359 .default_display = 0,
362 .gpccon = 0xaa9556a9,
363 .gpccon_mask = 0xffc003fc,
365 .gpcup_mask = 0xffffffff,
367 .gpdcon = 0xaa90aaa1,
368 .gpdcon_mask = 0xffc0fff0,
370 .gpdup_mask = 0xffffffff,
374 static struct pwm_lookup rx1950_pwm_lookup[] = {
375 PWM_LOOKUP("samsung-pwm", 0, "pwm-backlight.0", NULL, 48000,
376 PWM_POLARITY_NORMAL),
379 static struct pwm_device *lcd_pwm;
380 static struct pwm_state lcd_pwm_state;
382 static void rx1950_lcd_power(int enable)
386 if (enabled == enable)
390 /* GPC11-GPC15->OUTPUT */
391 for (i = 11; i < 16; i++)
392 gpio_direction_output(S3C2410_GPC(i), 1);
394 /* Wait a bit here... */
397 /* GPD2-GPD7->OUTPUT */
398 /* GPD11-GPD15->OUTPUT */
399 /* GPD2-GPD7->1, GPD11-GPD15->1 */
400 for (i = 2; i < 8; i++)
401 gpio_direction_output(S3C2410_GPD(i), 1);
402 for (i = 11; i < 16; i++)
403 gpio_direction_output(S3C2410_GPD(i), 1);
405 /* Wait a bit here...*/
408 /* GPB0->OUTPUT, GPB0->0 */
409 gpio_direction_output(S3C2410_GPB(0), 0);
411 /* GPC1-GPC4->OUTPUT, GPC1-4->0 */
412 for (i = 1; i < 5; i++)
413 gpio_direction_output(S3C2410_GPC(i), 0);
416 for (i = 11; i < 16; i++)
417 gpio_direction_output(S3C2410_GPC(i), 0);
419 /* GPD15-GPD11->0, GPD2->GPD7->0 */
420 for (i = 11; i < 16; i++)
421 gpio_direction_output(S3C2410_GPD(i), 0);
423 for (i = 2; i < 8; i++)
424 gpio_direction_output(S3C2410_GPD(i), 0);
426 /* GPC6->0, GPC7->0, GPC5->0 */
427 gpio_direction_output(S3C2410_GPC(6), 0);
428 gpio_direction_output(S3C2410_GPC(7), 0);
429 gpio_direction_output(S3C2410_GPC(5), 0);
431 /* GPB1->OUTPUT, GPB1->0 */
432 gpio_direction_output(S3C2410_GPB(1), 0);
434 lcd_pwm_state.enabled = false;
435 pwm_apply_state(lcd_pwm, &lcd_pwm_state);
437 /* GPC0->0, GPC10->0 */
438 gpio_direction_output(S3C2410_GPC(0), 0);
439 gpio_direction_output(S3C2410_GPC(10), 0);
441 lcd_pwm_state.enabled = true;
442 pwm_apply_state(lcd_pwm, &lcd_pwm_state);
444 gpio_direction_output(S3C2410_GPC(0), 1);
445 gpio_direction_output(S3C2410_GPC(5), 1);
447 s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPB1_TOUT1);
448 gpio_direction_output(S3C2410_GPC(7), 1);
450 for (i = 1; i < 5; i++)
451 s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
453 for (i = 11; i < 16; i++)
454 s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
456 for (i = 2; i < 8; i++)
457 s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
459 for (i = 11; i < 16; i++)
460 s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
462 gpio_direction_output(S3C2410_GPC(10), 1);
463 gpio_direction_output(S3C2410_GPC(6), 1);
468 static void rx1950_bl_power(int enable)
471 if (enabled == enable)
474 gpio_direction_output(S3C2410_GPB(0), 0);
476 /* LED driver need a "push" to power on */
477 gpio_direction_output(S3C2410_GPB(0), 1);
478 /* Warm up backlight for one period of PWM.
479 * Without this trick its almost impossible to
480 * enable backlight with low brightness value
483 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
488 static int rx1950_backlight_init(struct device *dev)
490 WARN_ON(gpio_request(S3C2410_GPB(0), "Backlight"));
491 lcd_pwm = pwm_request(1, "RX1950 LCD");
492 if (IS_ERR(lcd_pwm)) {
493 dev_err(dev, "Unable to request PWM for LCD power!\n");
494 return PTR_ERR(lcd_pwm);
498 * This is only required to initialize .polarity; all other values are
499 * fixed in this driver.
501 pwm_init_state(lcd_pwm, &lcd_pwm_state);
503 lcd_pwm_state.period = LCD_PWM_PERIOD;
504 lcd_pwm_state.duty_cycle = LCD_PWM_DUTY;
512 static void rx1950_backlight_exit(struct device *dev)
518 gpio_free(S3C2410_GPB(0));
522 static int rx1950_backlight_notify(struct device *dev, int brightness)
534 static struct platform_pwm_backlight_data rx1950_backlight_data = {
535 .max_brightness = 24,
537 .init = rx1950_backlight_init,
538 .notify = rx1950_backlight_notify,
539 .exit = rx1950_backlight_exit,
542 static struct platform_device rx1950_backlight = {
543 .name = "pwm-backlight",
545 .parent = &samsung_device_pwm.dev,
546 .platform_data = &rx1950_backlight_data,
550 static void rx1950_set_mmc_power(unsigned char power_mode, unsigned short vdd)
552 switch (power_mode) {
554 gpio_direction_output(S3C2410_GPJ(1), 0);
558 gpio_direction_output(S3C2410_GPJ(1), 1);
565 static struct s3c24xx_mci_pdata rx1950_mmc_cfg __initdata = {
566 .set_power = rx1950_set_mmc_power,
567 .ocr_avail = MMC_VDD_32_33,
570 static struct gpiod_lookup_table rx1950_mmc_gpio_table = {
571 .dev_id = "s3c2410-sdi",
573 /* Card detect S3C2410_GPF(5) */
574 GPIO_LOOKUP("GPF", 5, "cd", GPIO_ACTIVE_LOW),
575 /* Write protect S3C2410_GPH(8) */
576 GPIO_LOOKUP("GPH", 8, "wp", GPIO_ACTIVE_LOW),
581 static struct mtd_partition rx1950_nand_part[] = {
586 .mask_flags = MTD_WRITEABLE,
590 .offset = MTDPART_OFS_APPEND,
592 .mask_flags = MTD_WRITEABLE,
596 .offset = MTDPART_OFS_APPEND,
601 .name = "Filesystem",
602 .offset = MTDPART_OFS_APPEND,
603 .size = MTDPART_SIZ_FULL,
608 static struct s3c2410_nand_set rx1950_nand_sets[] = {
612 .nr_partitions = ARRAY_SIZE(rx1950_nand_part),
613 .partitions = rx1950_nand_part,
617 static struct s3c2410_platform_nand rx1950_nand_info = {
621 .nr_sets = ARRAY_SIZE(rx1950_nand_sets),
622 .sets = rx1950_nand_sets,
623 .ecc_mode = NAND_ECC_SOFT,
626 static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = {
627 .vbus_pin = S3C2410_GPG(5),
628 .vbus_pin_inverted = 1,
629 .pullup_pin = S3C2410_GPJ(5),
632 static struct s3c2410_ts_mach_info rx1950_ts_cfg __initdata = {
635 .oversampling_shift = 3,
638 static struct gpio_keys_button rx1950_gpio_keys_table[] = {
641 .gpio = S3C2410_GPF(0),
643 .desc = "Power button",
648 .gpio = S3C2410_GPF(7),
650 .desc = "Record button",
654 .gpio = S3C2410_GPG(0),
656 .desc = "Calendar button",
660 .gpio = S3C2410_GPG(2),
662 .desc = "Contacts button",
666 .gpio = S3C2410_GPG(3),
668 .desc = "Mail button",
672 .gpio = S3C2410_GPG(7),
674 .desc = "WLAN button",
678 .gpio = S3C2410_GPG(10),
680 .desc = "Left button",
684 .gpio = S3C2410_GPG(11),
686 .desc = "Right button",
690 .gpio = S3C2410_GPG(4),
696 .gpio = S3C2410_GPG(6),
698 .desc = "Down button",
702 .gpio = S3C2410_GPG(9),
708 static struct gpio_keys_platform_data rx1950_gpio_keys_data = {
709 .buttons = rx1950_gpio_keys_table,
710 .nbuttons = ARRAY_SIZE(rx1950_gpio_keys_table),
713 static struct platform_device rx1950_device_gpiokeys = {
715 .dev.platform_data = &rx1950_gpio_keys_data,
718 static struct uda1380_platform_data uda1380_info = {
719 .gpio_power = S3C2410_GPJ(0),
720 .gpio_reset = S3C2410_GPD(0),
721 .dac_clk = UDA1380_DAC_CLK_SYSCLK,
724 static struct i2c_board_info rx1950_i2c_devices[] = {
726 I2C_BOARD_INFO("uda1380", 0x1a),
727 .platform_data = &uda1380_info,
731 static struct platform_device *rx1950_devices[] __initdata = {
732 &s3c2410_device_dclk,
737 &s3c_device_usbgadget,
745 &rx1950_device_gpiokeys,
751 static void __init rx1950_map_io(void)
753 s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
754 s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
755 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
759 #ifdef CONFIG_PM_H1940
760 memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 8);
766 static void __init rx1950_init_time(void)
768 s3c2442_init_clocks(16934000);
769 samsung_timer_init();
772 static void __init rx1950_init_machine(void)
776 s3c24xx_fb_set_platdata(&rx1950_lcd_cfg);
777 s3c24xx_udc_set_platdata(&rx1950_udc_cfg);
778 s3c24xx_ts_set_platdata(&rx1950_ts_cfg);
779 gpiod_add_lookup_table(&rx1950_mmc_gpio_table);
780 s3c24xx_mci_set_platdata(&rx1950_mmc_cfg);
781 s3c_i2c0_set_platdata(NULL);
782 s3c_nand_set_platdata(&rx1950_nand_info);
784 /* Turn off suspend on both USB ports, and switch the
785 * selectable USB port to USB device mode. */
786 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
787 S3C2410_MISCCR_USBSUSPND0 |
788 S3C2410_MISCCR_USBSUSPND1, 0x0);
790 /* mmc power is disabled by default */
791 WARN_ON(gpio_request(S3C2410_GPJ(1), "MMC power"));
792 gpio_direction_output(S3C2410_GPJ(1), 0);
794 for (i = 0; i < 8; i++)
795 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
797 for (i = 10; i < 16; i++)
798 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
800 for (i = 2; i < 8; i++)
801 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
803 for (i = 11; i < 16; i++)
804 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
806 WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
808 WARN_ON(gpio_request(S3C2410_GPA(3), "Red blink"));
809 WARN_ON(gpio_request(S3C2410_GPA(4), "Green blink"));
810 WARN_ON(gpio_request(S3C2410_GPJ(6), "LED blink"));
811 gpio_direction_output(S3C2410_GPA(3), 0);
812 gpio_direction_output(S3C2410_GPA(4), 0);
813 gpio_direction_output(S3C2410_GPJ(6), 0);
815 pwm_add_table(rx1950_pwm_lookup, ARRAY_SIZE(rx1950_pwm_lookup));
816 platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
818 i2c_register_board_info(0, rx1950_i2c_devices,
819 ARRAY_SIZE(rx1950_i2c_devices));
822 /* H1940 and RX3715 need to reserve this for suspend */
823 static void __init rx1950_reserve(void)
825 memblock_reserve(0x30003000, 0x1000);
826 memblock_reserve(0x30081000, 0x1000);
829 MACHINE_START(RX1950, "HP iPAQ RX1950")
830 /* Maintainers: Vasily Khoruzhick */
831 .atag_offset = 0x100,
832 .map_io = rx1950_map_io,
833 .reserve = rx1950_reserve,
834 .init_irq = s3c2442_init_irq,
835 .init_machine = rx1950_init_machine,
836 .init_time = rx1950_init_time,