arch/arm/mach-ux500/board-mop500-stuib.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * License terms: GNU General Public License (GPL), version 2
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/init.h>
   9 #include <linux/mfd/stmpe.h>
  10 #include <linux/input/bu21013.h>
  11 #include <linux/gpio.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/i2c.h>
  14 #include <linux/input/matrix_keypad.h>
  15 #include <asm/mach-types.h>
  16
  17 #include "board-mop500.h"
  18
  19 /* STMPE/SKE keypad use this key layout */
  20 static const unsigned int mop500_keymap[] = {
  21         KEY(2, 5, KEY_END),
  22         KEY(4, 1, KEY_POWER),
  23         KEY(3, 5, KEY_VOLUMEDOWN),
  24         KEY(1, 3, KEY_3),
  25         KEY(5, 2, KEY_RIGHT),
  26         KEY(5, 0, KEY_9),
  27
  28         KEY(0, 5, KEY_MENU),
  29         KEY(7, 6, KEY_ENTER),
  30         KEY(4, 5, KEY_0),
  31         KEY(6, 7, KEY_2),
  32         KEY(3, 4, KEY_UP),
  33         KEY(3, 3, KEY_DOWN),
  34
  35         KEY(6, 4, KEY_SEND),
  36         KEY(6, 2, KEY_BACK),
  37         KEY(4, 2, KEY_VOLUMEUP),
  38         KEY(5, 5, KEY_1),
  39         KEY(4, 3, KEY_LEFT),
  40         KEY(3, 2, KEY_7),
  41 };
  42
  43 static const struct matrix_keymap_data mop500_keymap_data = {
  44         .keymap         = mop500_keymap,
  45         .keymap_size    = ARRAY_SIZE(mop500_keymap),
  46 };
  47 /*
  48  * STMPE1601
  49  */
  50 static struct stmpe_keypad_platform_data stmpe1601_keypad_data = {
  51         .debounce_ms    = 64,
  52         .scan_count     = 8,
  53         .no_autorepeat  = true,
  54         .keymap_data    = &mop500_keymap_data,
  55 };
  56
  57 static struct stmpe_platform_data stmpe1601_data = {
  58         .id             = 1,
  59         .blocks         = STMPE_BLOCK_KEYPAD,
  60         .irq_trigger    = IRQF_TRIGGER_FALLING,
  61         .irq_base       = MOP500_STMPE1601_IRQ(0),
  62         .keypad         = &stmpe1601_keypad_data,
  63         .autosleep      = true,
  64         .autosleep_timeout = 1024,
  65 };
  66
  67 static struct i2c_board_info __initdata mop500_i2c0_devices_stuib[] = {
  68         {
  69                 I2C_BOARD_INFO("stmpe1601", 0x40),
  70                 .irq = NOMADIK_GPIO_TO_IRQ(218),
  71                 .platform_data = &stmpe1601_data,
  72                 .flags = I2C_CLIENT_WAKE,
  73         },
  74 };
  75
  76 /*
  77  * BU21013 ROHM touchscreen interface on the STUIBs
  78  */
  79
  80 /* tracks number of bu21013 devices being enabled */
  81 static int bu21013_devices;
  82
  83 #define TOUCH_GPIO_PIN  84
  84
  85 #define TOUCH_XMAX      384
  86 #define TOUCH_YMAX      704
  87
  88 #define PRCMU_CLOCK_OCR         0x1CC
  89 #define TSC_EXT_CLOCK_9_6MHZ    0x840000
  90
  91 /**
  92  * bu21013_gpio_board_init : configures the touch panel.
  93  * @reset_pin: reset pin number
  94  * This function can be used to configures
  95  * the voltage and reset the touch panel controller.
  96  */
  97 static int bu21013_gpio_board_init(int reset_pin)
  98 {
  99         int retval = 0;
 100
 101         bu21013_devices++;
 102         if (bu21013_devices == 1) {
 103                 retval = gpio_request(reset_pin, "touchp_reset");
 104                 if (retval) {
 105                         printk(KERN_ERR "Unable to request gpio reset_pin");
 106                         return retval;
 107                 }
 108                 retval = gpio_direction_output(reset_pin, 1);
 109                 if (retval < 0) {
 110                         printk(KERN_ERR "%s: gpio direction failed\n",
 111                                         __func__);
 112                         return retval;
 113                 }
 114         }
 115
 116         return retval;
 117 }
 118
 119 /**
 120  * bu21013_gpio_board_exit : deconfigures the touch panel controller
 121  * @reset_pin: reset pin number
 122  * This function can be used to deconfigures the chip selection
 123  * for touch panel controller.
 124  */
 125 static int bu21013_gpio_board_exit(int reset_pin)
 126 {
 127         int retval = 0;
 128
 129         if (bu21013_devices == 1) {
 130                 retval = gpio_direction_output(reset_pin, 0);
 131                 if (retval < 0) {
 132                         printk(KERN_ERR "%s: gpio direction failed\n",
 133                                         __func__);
 134                         return retval;
 135                 }
 136                 gpio_set_value(reset_pin, 0);
 137         }
 138         bu21013_devices--;
 139
 140         return retval;
 141 }
 142
 143 /**
 144  * bu21013_read_pin_val : get the interrupt pin value
 145  * This function can be used to get the interrupt pin value for touch panel
 146  * controller.
 147  */
 148 static int bu21013_read_pin_val(void)
 149 {
 150         return gpio_get_value(TOUCH_GPIO_PIN);
 151 }
 152
 153 static struct bu21013_platform_device tsc_plat_device = {
 154         .cs_en = bu21013_gpio_board_init,
 155         .cs_dis = bu21013_gpio_board_exit,
 156         .irq_read_val = bu21013_read_pin_val,
 157         .irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
 158         .touch_x_max = TOUCH_XMAX,
 159         .touch_y_max = TOUCH_YMAX,
 160         .ext_clk = false,
 161         .x_flip = false,
 162         .y_flip = true,
 163 };
 164
 165 static struct bu21013_platform_device tsc_plat2_device = {
 166         .cs_en = bu21013_gpio_board_init,
 167         .cs_dis = bu21013_gpio_board_exit,
 168         .irq_read_val = bu21013_read_pin_val,
 169         .irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
 170         .touch_x_max = TOUCH_XMAX,
 171         .touch_y_max = TOUCH_YMAX,
 172         .ext_clk = false,
 173         .x_flip = false,
 174         .y_flip = true,
 175 };
 176
 177 static struct i2c_board_info __initdata u8500_i2c3_devices_stuib[] = {
 178         {
 179                 I2C_BOARD_INFO("bu21013_tp", 0x5C),
 180                 .platform_data = &tsc_plat_device,
 181         },
 182         {
 183                 I2C_BOARD_INFO("bu21013_tp", 0x5D),
 184                 .platform_data = &tsc_plat2_device,
 185         },
 186
 187 };
 188
 189 void __init mop500_stuib_init(void)
 190 {
 191         if (machine_is_hrefv60()) {
 192                 tsc_plat_device.cs_pin = HREFV60_TOUCH_RST_GPIO;
 193                 tsc_plat2_device.cs_pin = HREFV60_TOUCH_RST_GPIO;
 194         } else {
 195                 tsc_plat_device.cs_pin = GPIO_BU21013_CS;
 196                 tsc_plat2_device.cs_pin = GPIO_BU21013_CS;
 197
 198         }
 199
 200         mop500_uib_i2c_add(0, mop500_i2c0_devices_stuib,
 201                         ARRAY_SIZE(mop500_i2c0_devices_stuib));
 202
 203         mop500_uib_i2c_add(3, u8500_i2c3_devices_stuib,
 204                         ARRAY_SIZE(u8500_i2c3_devices_stuib));
 205 }