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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Hardware definitions for Palm Tungsten|E2
0004  *
0005  * Author:
0006  *  Carlos Eduardo Medaglia Dyonisio <cadu@nerdfeliz.com>
0007  *
0008  * Rewrite for mainline:
0009  *  Marek Vasut <marek.vasut@gmail.com>
0010  *
0011  * (find more info at www.hackndev.com)
0012  */
0013 
0014 #include <linux/platform_device.h>
0015 #include <linux/delay.h>
0016 #include <linux/irq.h>
0017 #include <linux/gpio_keys.h>
0018 #include <linux/gpio/machine.h>
0019 #include <linux/input.h>
0020 #include <linux/pda_power.h>
0021 #include <linux/pwm.h>
0022 #include <linux/pwm_backlight.h>
0023 #include <linux/gpio.h>
0024 #include <linux/wm97xx.h>
0025 #include <linux/power_supply.h>
0026 
0027 #include <asm/mach-types.h>
0028 #include <asm/mach/arch.h>
0029 #include <asm/mach/map.h>
0030 
0031 #include "pxa25x.h"
0032 #include <linux/platform_data/asoc-pxa.h>
0033 #include "palmte2.h"
0034 #include <linux/platform_data/mmc-pxamci.h>
0035 #include <linux/platform_data/video-pxafb.h>
0036 #include <linux/platform_data/irda-pxaficp.h>
0037 #include "udc.h"
0038 #include <linux/platform_data/asoc-palm27x.h>
0039 
0040 #include "generic.h"
0041 #include "devices.h"
0042 
0043 /******************************************************************************
0044  * Pin configuration
0045  ******************************************************************************/
0046 static unsigned long palmte2_pin_config[] __initdata = {
0047     /* MMC */
0048     GPIO6_MMC_CLK,
0049     GPIO8_MMC_CS0,
0050     GPIO10_GPIO,    /* SD detect */
0051     GPIO55_GPIO,    /* SD power */
0052     GPIO51_GPIO,    /* SD r/o switch */
0053 
0054     /* AC97 */
0055     GPIO28_AC97_BITCLK,
0056     GPIO29_AC97_SDATA_IN_0,
0057     GPIO30_AC97_SDATA_OUT,
0058     GPIO31_AC97_SYNC,
0059 
0060     /* PWM */
0061     GPIO16_PWM0_OUT,
0062 
0063     /* USB */
0064     GPIO15_GPIO,    /* usb detect */
0065     GPIO53_GPIO,    /* usb power */
0066 
0067     /* IrDA */
0068     GPIO48_GPIO,    /* ir disable */
0069     GPIO46_FICP_RXD,
0070     GPIO47_FICP_TXD,
0071 
0072     /* LCD */
0073     GPIOxx_LCD_TFT_16BPP,
0074 
0075     /* GPIO KEYS */
0076     GPIO5_GPIO, /* notes */
0077     GPIO7_GPIO, /* tasks */
0078     GPIO11_GPIO,    /* calendar */
0079     GPIO13_GPIO,    /* contacts */
0080     GPIO14_GPIO,    /* center */
0081     GPIO19_GPIO,    /* left */
0082     GPIO20_GPIO,    /* right */
0083     GPIO21_GPIO,    /* down */
0084     GPIO22_GPIO,    /* up */
0085 
0086     /* MISC */
0087     GPIO1_RST,  /* reset */
0088     GPIO4_GPIO, /* Hotsync button */
0089     GPIO9_GPIO, /* power detect */
0090     GPIO15_GPIO,    /* earphone detect */
0091     GPIO37_GPIO,    /* LCD power */
0092     GPIO56_GPIO,    /* Backlight power */
0093 };
0094 
0095 /******************************************************************************
0096  * SD/MMC card controller
0097  ******************************************************************************/
0098 static struct pxamci_platform_data palmte2_mci_platform_data = {
0099     .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
0100 };
0101 
0102 static struct gpiod_lookup_table palmte2_mci_gpio_table = {
0103     .dev_id = "pxa2xx-mci.0",
0104     .table = {
0105         GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_SD_DETECT_N,
0106                 "cd", GPIO_ACTIVE_LOW),
0107         GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_SD_READONLY,
0108                 "wp", GPIO_ACTIVE_LOW),
0109         GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_SD_POWER,
0110                 "power", GPIO_ACTIVE_HIGH),
0111         { },
0112     },
0113 };
0114 
0115 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
0116 /******************************************************************************
0117  * GPIO keys
0118  ******************************************************************************/
0119 static struct gpio_keys_button palmte2_pxa_buttons[] = {
0120     {KEY_F1,    GPIO_NR_PALMTE2_KEY_CONTACTS,   1, "Contacts" },
0121     {KEY_F2,    GPIO_NR_PALMTE2_KEY_CALENDAR,   1, "Calendar" },
0122     {KEY_F3,    GPIO_NR_PALMTE2_KEY_TASKS,  1, "Tasks" },
0123     {KEY_F4,    GPIO_NR_PALMTE2_KEY_NOTES,  1, "Notes" },
0124     {KEY_ENTER, GPIO_NR_PALMTE2_KEY_CENTER, 1, "Center" },
0125     {KEY_LEFT,  GPIO_NR_PALMTE2_KEY_LEFT,   1, "Left" },
0126     {KEY_RIGHT, GPIO_NR_PALMTE2_KEY_RIGHT,  1, "Right" },
0127     {KEY_DOWN,  GPIO_NR_PALMTE2_KEY_DOWN,   1, "Down" },
0128     {KEY_UP,    GPIO_NR_PALMTE2_KEY_UP,     1, "Up" },
0129 };
0130 
0131 static struct gpio_keys_platform_data palmte2_pxa_keys_data = {
0132     .buttons    = palmte2_pxa_buttons,
0133     .nbuttons   = ARRAY_SIZE(palmte2_pxa_buttons),
0134 };
0135 
0136 static struct platform_device palmte2_pxa_keys = {
0137     .name   = "gpio-keys",
0138     .id = -1,
0139     .dev    = {
0140         .platform_data = &palmte2_pxa_keys_data,
0141     },
0142 };
0143 #endif
0144 
0145 /******************************************************************************
0146  * Backlight
0147  ******************************************************************************/
0148 static struct pwm_lookup palmte2_pwm_lookup[] = {
0149     PWM_LOOKUP("pxa25x-pwm.0", 0, "pwm-backlight.0", NULL,
0150            PALMTE2_PERIOD_NS, PWM_POLARITY_NORMAL),
0151 };
0152 
0153 static struct gpio palmte_bl_gpios[] = {
0154     { GPIO_NR_PALMTE2_BL_POWER, GPIOF_INIT_LOW, "Backlight power" },
0155     { GPIO_NR_PALMTE2_LCD_POWER, GPIOF_INIT_LOW, "LCD power" },
0156 };
0157 
0158 static int palmte2_backlight_init(struct device *dev)
0159 {
0160     return gpio_request_array(ARRAY_AND_SIZE(palmte_bl_gpios));
0161 }
0162 
0163 static int palmte2_backlight_notify(struct device *dev, int brightness)
0164 {
0165     gpio_set_value(GPIO_NR_PALMTE2_BL_POWER, brightness);
0166     gpio_set_value(GPIO_NR_PALMTE2_LCD_POWER, brightness);
0167     return brightness;
0168 }
0169 
0170 static void palmte2_backlight_exit(struct device *dev)
0171 {
0172     gpio_free_array(ARRAY_AND_SIZE(palmte_bl_gpios));
0173 }
0174 
0175 static struct platform_pwm_backlight_data palmte2_backlight_data = {
0176     .max_brightness = PALMTE2_MAX_INTENSITY,
0177     .dft_brightness = PALMTE2_MAX_INTENSITY,
0178     .init       = palmte2_backlight_init,
0179     .notify     = palmte2_backlight_notify,
0180     .exit       = palmte2_backlight_exit,
0181 };
0182 
0183 static struct platform_device palmte2_backlight = {
0184     .name   = "pwm-backlight",
0185     .dev    = {
0186         .parent     = &pxa25x_device_pwm0.dev,
0187         .platform_data  = &palmte2_backlight_data,
0188     },
0189 };
0190 
0191 /******************************************************************************
0192  * IrDA
0193  ******************************************************************************/
0194 static struct pxaficp_platform_data palmte2_ficp_platform_data = {
0195     .gpio_pwdown        = GPIO_NR_PALMTE2_IR_DISABLE,
0196     .transceiver_cap    = IR_SIRMODE | IR_OFF,
0197 };
0198 
0199 /******************************************************************************
0200  * UDC
0201  ******************************************************************************/
0202 static struct gpiod_lookup_table palmte2_udc_gpiod_table = {
0203     .dev_id = "gpio-vbus",
0204     .table = {
0205         GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_USB_DETECT_N,
0206                 "vbus", GPIO_ACTIVE_LOW),
0207         GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTE2_USB_PULLUP,
0208                 "pullup", GPIO_ACTIVE_HIGH),
0209         { },
0210     },
0211 };
0212 
0213 static struct platform_device palmte2_gpio_vbus = {
0214     .name   = "gpio-vbus",
0215     .id = -1,
0216 };
0217 
0218 /******************************************************************************
0219  * Power supply
0220  ******************************************************************************/
0221 static int power_supply_init(struct device *dev)
0222 {
0223     int ret;
0224 
0225     ret = gpio_request(GPIO_NR_PALMTE2_POWER_DETECT, "CABLE_STATE_AC");
0226     if (ret)
0227         goto err1;
0228     ret = gpio_direction_input(GPIO_NR_PALMTE2_POWER_DETECT);
0229     if (ret)
0230         goto err2;
0231 
0232     return 0;
0233 
0234 err2:
0235     gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
0236 err1:
0237     return ret;
0238 }
0239 
0240 static int palmte2_is_ac_online(void)
0241 {
0242     return gpio_get_value(GPIO_NR_PALMTE2_POWER_DETECT);
0243 }
0244 
0245 static void power_supply_exit(struct device *dev)
0246 {
0247     gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
0248 }
0249 
0250 static char *palmte2_supplicants[] = {
0251     "main-battery",
0252 };
0253 
0254 static struct pda_power_pdata power_supply_info = {
0255     .init            = power_supply_init,
0256     .is_ac_online    = palmte2_is_ac_online,
0257     .exit            = power_supply_exit,
0258     .supplied_to     = palmte2_supplicants,
0259     .num_supplicants = ARRAY_SIZE(palmte2_supplicants),
0260 };
0261 
0262 static struct platform_device power_supply = {
0263     .name = "pda-power",
0264     .id   = -1,
0265     .dev  = {
0266         .platform_data = &power_supply_info,
0267     },
0268 };
0269 
0270 /******************************************************************************
0271  * WM97xx audio, battery
0272  ******************************************************************************/
0273 static struct wm97xx_batt_pdata palmte2_batt_pdata = {
0274     .batt_aux   = WM97XX_AUX_ID3,
0275     .temp_aux   = WM97XX_AUX_ID2,
0276     .max_voltage    = PALMTE2_BAT_MAX_VOLTAGE,
0277     .min_voltage    = PALMTE2_BAT_MIN_VOLTAGE,
0278     .batt_mult  = 1000,
0279     .batt_div   = 414,
0280     .temp_mult  = 1,
0281     .temp_div   = 1,
0282     .batt_tech  = POWER_SUPPLY_TECHNOLOGY_LIPO,
0283     .batt_name  = "main-batt",
0284 };
0285 
0286 static struct wm97xx_pdata palmte2_wm97xx_pdata = {
0287     .batt_pdata = &palmte2_batt_pdata,
0288 };
0289 
0290 static pxa2xx_audio_ops_t palmte2_ac97_pdata = {
0291     .codec_pdata    = { &palmte2_wm97xx_pdata, },
0292 };
0293 
0294 static struct palm27x_asoc_info palmte2_asoc_pdata = {
0295     .jack_gpio  = GPIO_NR_PALMTE2_EARPHONE_DETECT,
0296 };
0297 
0298 static struct platform_device palmte2_asoc = {
0299     .name = "palm27x-asoc",
0300     .id   = -1,
0301     .dev  = {
0302         .platform_data = &palmte2_asoc_pdata,
0303     },
0304 };
0305 
0306 /******************************************************************************
0307  * Framebuffer
0308  ******************************************************************************/
0309 static struct pxafb_mode_info palmte2_lcd_modes[] = {
0310 {
0311     .pixclock   = 77757,
0312     .xres       = 320,
0313     .yres       = 320,
0314     .bpp        = 16,
0315 
0316     .left_margin    = 28,
0317     .right_margin   = 7,
0318     .upper_margin   = 7,
0319     .lower_margin   = 5,
0320 
0321     .hsync_len  = 4,
0322     .vsync_len  = 1,
0323 },
0324 };
0325 
0326 static struct pxafb_mach_info palmte2_lcd_screen = {
0327     .modes      = palmte2_lcd_modes,
0328     .num_modes  = ARRAY_SIZE(palmte2_lcd_modes),
0329     .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
0330 };
0331 
0332 /******************************************************************************
0333  * Machine init
0334  ******************************************************************************/
0335 static struct platform_device *devices[] __initdata = {
0336 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
0337     &palmte2_pxa_keys,
0338 #endif
0339     &palmte2_backlight,
0340     &power_supply,
0341     &palmte2_asoc,
0342     &palmte2_gpio_vbus,
0343 };
0344 
0345 /* setup udc GPIOs initial state */
0346 static void __init palmte2_udc_init(void)
0347 {
0348     if (!gpio_request(GPIO_NR_PALMTE2_USB_PULLUP, "UDC Vbus")) {
0349         gpio_direction_output(GPIO_NR_PALMTE2_USB_PULLUP, 1);
0350         gpio_free(GPIO_NR_PALMTE2_USB_PULLUP);
0351     }
0352 }
0353 
0354 static void __init palmte2_init(void)
0355 {
0356     pxa2xx_mfp_config(ARRAY_AND_SIZE(palmte2_pin_config));
0357 
0358     pxa_set_ffuart_info(NULL);
0359     pxa_set_btuart_info(NULL);
0360     pxa_set_stuart_info(NULL);
0361 
0362     pxa_set_fb_info(NULL, &palmte2_lcd_screen);
0363     gpiod_add_lookup_table(&palmte2_mci_gpio_table);
0364     pxa_set_mci_info(&palmte2_mci_platform_data);
0365     palmte2_udc_init();
0366     pxa_set_ac97_info(&palmte2_ac97_pdata);
0367     pxa_set_ficp_info(&palmte2_ficp_platform_data);
0368 
0369     pwm_add_table(palmte2_pwm_lookup, ARRAY_SIZE(palmte2_pwm_lookup));
0370     gpiod_add_lookup_table(&palmte2_udc_gpiod_table);
0371     platform_add_devices(devices, ARRAY_SIZE(devices));
0372 }
0373 
0374 MACHINE_START(PALMTE2, "Palm Tungsten|E2")
0375     .atag_offset    = 0x100,
0376     .map_io     = pxa25x_map_io,
0377     .nr_irqs    = PXA_NR_IRQS,
0378     .init_irq   = pxa25x_init_irq,
0379     .handle_irq = pxa25x_handle_irq,
0380     .init_time  = pxa_timer_init,
0381     .init_machine   = palmte2_init,
0382     .restart    = pxa_restart,
0383 MACHINE_END
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