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;
381 static void rx1950_lcd_power(int enable)
385 if (enabled == enable)
389 /* GPC11-GPC15->OUTPUT */
390 for (i = 11; i < 16; i++)
391 gpio_direction_output(S3C2410_GPC(i), 1);
393 /* Wait a bit here... */
396 /* GPD2-GPD7->OUTPUT */
397 /* GPD11-GPD15->OUTPUT */
398 /* GPD2-GPD7->1, GPD11-GPD15->1 */
399 for (i = 2; i < 8; i++)
400 gpio_direction_output(S3C2410_GPD(i), 1);
401 for (i = 11; i < 16; i++)
402 gpio_direction_output(S3C2410_GPD(i), 1);
404 /* Wait a bit here...*/
407 /* GPB0->OUTPUT, GPB0->0 */
408 gpio_direction_output(S3C2410_GPB(0), 0);
410 /* GPC1-GPC4->OUTPUT, GPC1-4->0 */
411 for (i = 1; i < 5; i++)
412 gpio_direction_output(S3C2410_GPC(i), 0);
415 for (i = 11; i < 16; i++)
416 gpio_direction_output(S3C2410_GPC(i), 0);
418 /* GPD15-GPD11->0, GPD2->GPD7->0 */
419 for (i = 11; i < 16; i++)
420 gpio_direction_output(S3C2410_GPD(i), 0);
422 for (i = 2; i < 8; i++)
423 gpio_direction_output(S3C2410_GPD(i), 0);
425 /* GPC6->0, GPC7->0, GPC5->0 */
426 gpio_direction_output(S3C2410_GPC(6), 0);
427 gpio_direction_output(S3C2410_GPC(7), 0);
428 gpio_direction_output(S3C2410_GPC(5), 0);
430 /* GPB1->OUTPUT, GPB1->0 */
431 gpio_direction_output(S3C2410_GPB(1), 0);
432 pwm_config(lcd_pwm, 0, LCD_PWM_PERIOD);
433 pwm_disable(lcd_pwm);
435 /* GPC0->0, GPC10->0 */
436 gpio_direction_output(S3C2410_GPC(0), 0);
437 gpio_direction_output(S3C2410_GPC(10), 0);
439 pwm_config(lcd_pwm, LCD_PWM_DUTY, LCD_PWM_PERIOD);
442 gpio_direction_output(S3C2410_GPC(0), 1);
443 gpio_direction_output(S3C2410_GPC(5), 1);
445 s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPB1_TOUT1);
446 gpio_direction_output(S3C2410_GPC(7), 1);
448 for (i = 1; i < 5; i++)
449 s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
451 for (i = 11; i < 16; i++)
452 s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
454 for (i = 2; i < 8; i++)
455 s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
457 for (i = 11; i < 16; i++)
458 s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
460 gpio_direction_output(S3C2410_GPC(10), 1);
461 gpio_direction_output(S3C2410_GPC(6), 1);
466 static void rx1950_bl_power(int enable)
469 if (enabled == enable)
472 gpio_direction_output(S3C2410_GPB(0), 0);
474 /* LED driver need a "push" to power on */
475 gpio_direction_output(S3C2410_GPB(0), 1);
476 /* Warm up backlight for one period of PWM.
477 * Without this trick its almost impossible to
478 * enable backlight with low brightness value
481 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
486 static int rx1950_backlight_init(struct device *dev)
488 WARN_ON(gpio_request(S3C2410_GPB(0), "Backlight"));
489 lcd_pwm = pwm_request(1, "RX1950 LCD");
490 if (IS_ERR(lcd_pwm)) {
491 dev_err(dev, "Unable to request PWM for LCD power!\n");
492 return PTR_ERR(lcd_pwm);
496 * FIXME: pwm_apply_args() should be removed when switching to
497 * the atomic PWM API.
499 pwm_apply_args(lcd_pwm);
507 static void rx1950_backlight_exit(struct device *dev)
513 gpio_free(S3C2410_GPB(0));
517 static int rx1950_backlight_notify(struct device *dev, int brightness)
529 static struct platform_pwm_backlight_data rx1950_backlight_data = {
530 .max_brightness = 24,
533 .init = rx1950_backlight_init,
534 .notify = rx1950_backlight_notify,
535 .exit = rx1950_backlight_exit,
538 static struct platform_device rx1950_backlight = {
539 .name = "pwm-backlight",
541 .parent = &samsung_device_pwm.dev,
542 .platform_data = &rx1950_backlight_data,
546 static void rx1950_set_mmc_power(unsigned char power_mode, unsigned short vdd)
548 switch (power_mode) {
550 gpio_direction_output(S3C2410_GPJ(1), 0);
554 gpio_direction_output(S3C2410_GPJ(1), 1);
561 static struct s3c24xx_mci_pdata rx1950_mmc_cfg __initdata = {
562 .set_power = rx1950_set_mmc_power,
563 .ocr_avail = MMC_VDD_32_33,
566 static struct gpiod_lookup_table rx1950_mmc_gpio_table = {
567 .dev_id = "s3c2410-sdi",
569 /* Card detect S3C2410_GPF(5) */
570 GPIO_LOOKUP("GPF", 5, "cd", GPIO_ACTIVE_LOW),
571 /* Write protect S3C2410_GPH(8) */
572 GPIO_LOOKUP("GPH", 8, "wp", GPIO_ACTIVE_LOW),
577 static struct mtd_partition rx1950_nand_part[] = {
582 .mask_flags = MTD_WRITEABLE,
586 .offset = MTDPART_OFS_APPEND,
588 .mask_flags = MTD_WRITEABLE,
592 .offset = MTDPART_OFS_APPEND,
597 .name = "Filesystem",
598 .offset = MTDPART_OFS_APPEND,
599 .size = MTDPART_SIZ_FULL,
604 static struct s3c2410_nand_set rx1950_nand_sets[] = {
608 .nr_partitions = ARRAY_SIZE(rx1950_nand_part),
609 .partitions = rx1950_nand_part,
613 static struct s3c2410_platform_nand rx1950_nand_info = {
617 .nr_sets = ARRAY_SIZE(rx1950_nand_sets),
618 .sets = rx1950_nand_sets,
619 .ecc_mode = NAND_ECC_SOFT,
622 static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = {
623 .vbus_pin = S3C2410_GPG(5),
624 .vbus_pin_inverted = 1,
625 .pullup_pin = S3C2410_GPJ(5),
628 static struct s3c2410_ts_mach_info rx1950_ts_cfg __initdata = {
631 .oversampling_shift = 3,
634 static struct gpio_keys_button rx1950_gpio_keys_table[] = {
637 .gpio = S3C2410_GPF(0),
639 .desc = "Power button",
644 .gpio = S3C2410_GPF(7),
646 .desc = "Record button",
650 .gpio = S3C2410_GPG(0),
652 .desc = "Calendar button",
656 .gpio = S3C2410_GPG(2),
658 .desc = "Contacts button",
662 .gpio = S3C2410_GPG(3),
664 .desc = "Mail button",
668 .gpio = S3C2410_GPG(7),
670 .desc = "WLAN button",
674 .gpio = S3C2410_GPG(10),
676 .desc = "Left button",
680 .gpio = S3C2410_GPG(11),
682 .desc = "Right button",
686 .gpio = S3C2410_GPG(4),
692 .gpio = S3C2410_GPG(6),
694 .desc = "Down button",
698 .gpio = S3C2410_GPG(9),
704 static struct gpio_keys_platform_data rx1950_gpio_keys_data = {
705 .buttons = rx1950_gpio_keys_table,
706 .nbuttons = ARRAY_SIZE(rx1950_gpio_keys_table),
709 static struct platform_device rx1950_device_gpiokeys = {
711 .dev.platform_data = &rx1950_gpio_keys_data,
714 static struct uda1380_platform_data uda1380_info = {
715 .gpio_power = S3C2410_GPJ(0),
716 .gpio_reset = S3C2410_GPD(0),
717 .dac_clk = UDA1380_DAC_CLK_SYSCLK,
720 static struct i2c_board_info rx1950_i2c_devices[] = {
722 I2C_BOARD_INFO("uda1380", 0x1a),
723 .platform_data = &uda1380_info,
727 static struct platform_device *rx1950_devices[] __initdata = {
728 &s3c2410_device_dclk,
733 &s3c_device_usbgadget,
741 &rx1950_device_gpiokeys,
747 static void __init rx1950_map_io(void)
749 s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
750 s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
751 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
755 #ifdef CONFIG_PM_H1940
756 memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 8);
762 static void __init rx1950_init_time(void)
764 s3c2442_init_clocks(16934000);
765 samsung_timer_init();
768 static void __init rx1950_init_machine(void)
772 s3c24xx_fb_set_platdata(&rx1950_lcd_cfg);
773 s3c24xx_udc_set_platdata(&rx1950_udc_cfg);
774 s3c24xx_ts_set_platdata(&rx1950_ts_cfg);
775 gpiod_add_lookup_table(&rx1950_mmc_gpio_table);
776 s3c24xx_mci_set_platdata(&rx1950_mmc_cfg);
777 s3c_i2c0_set_platdata(NULL);
778 s3c_nand_set_platdata(&rx1950_nand_info);
780 /* Turn off suspend on both USB ports, and switch the
781 * selectable USB port to USB device mode. */
782 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
783 S3C2410_MISCCR_USBSUSPND0 |
784 S3C2410_MISCCR_USBSUSPND1, 0x0);
786 /* mmc power is disabled by default */
787 WARN_ON(gpio_request(S3C2410_GPJ(1), "MMC power"));
788 gpio_direction_output(S3C2410_GPJ(1), 0);
790 for (i = 0; i < 8; i++)
791 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
793 for (i = 10; i < 16; i++)
794 WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
796 for (i = 2; i < 8; i++)
797 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
799 for (i = 11; i < 16; i++)
800 WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
802 WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
804 WARN_ON(gpio_request(S3C2410_GPA(3), "Red blink"));
805 WARN_ON(gpio_request(S3C2410_GPA(4), "Green blink"));
806 WARN_ON(gpio_request(S3C2410_GPJ(6), "LED blink"));
807 gpio_direction_output(S3C2410_GPA(3), 0);
808 gpio_direction_output(S3C2410_GPA(4), 0);
809 gpio_direction_output(S3C2410_GPJ(6), 0);
811 pwm_add_table(rx1950_pwm_lookup, ARRAY_SIZE(rx1950_pwm_lookup));
812 platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
814 i2c_register_board_info(0, rx1950_i2c_devices,
815 ARRAY_SIZE(rx1950_i2c_devices));
818 /* H1940 and RX3715 need to reserve this for suspend */
819 static void __init rx1950_reserve(void)
821 memblock_reserve(0x30003000, 0x1000);
822 memblock_reserve(0x30081000, 0x1000);
825 MACHINE_START(RX1950, "HP iPAQ RX1950")
826 /* Maintainers: Vasily Khoruzhick */
827 .atag_offset = 0x100,
828 .map_io = rx1950_map_io,
829 .reserve = rx1950_reserve,
830 .init_irq = s3c2442_init_irq,
831 .init_machine = rx1950_init_machine,
832 .init_time = rx1950_init_time,