arch/arm/mach-omap1/board-nokia770.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/arch/arm/mach-omap1/board-nokia770.c
   4  *
   5  * Modified from board-generic.c
   6  */
   7 #include <linux/clkdev.h>
   8 #include <linux/irq.h>
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/gpio/machine.h>
  11 #include <linux/gpio/property.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/mutex.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/property.h>
  17 #include <linux/input.h>
  18 #include <linux/omapfb.h>
  19
  20 #include <linux/spi/spi.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/delay.h>
  23
  24 #include <linux/platform_data/keypad-omap.h>
  25 #include <linux/platform_data/lcd-mipid.h>
  26 #include <linux/platform_data/gpio-omap.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31
  32 #include "mux.h"
  33 #include "hardware.h"
  34 #include "usb.h"
  35 #include "common.h"
  36 #include "clock.h"
  37 #include "mmc.h"
  38
  39 static const struct software_node nokia770_mpuio_gpiochip_node = {
  40         .name = "mpuio",
  41 };
  42
  43 static const struct software_node nokia770_gpiochip1_node = {
  44         .name = "gpio-0-15",
  45 };
  46
  47 static const struct software_node nokia770_gpiochip2_node = {
  48         .name = "gpio-16-31",
  49 };
  50
  51 static const struct software_node *nokia770_gpiochip_nodes[] = {
  52         &nokia770_mpuio_gpiochip_node,
  53         &nokia770_gpiochip1_node,
  54         &nokia770_gpiochip2_node,
  55         NULL
  56 };
  57
  58 #define ADS7846_PENDOWN_GPIO    15
  59
  60 static const unsigned int nokia770_keymap[] = {
  61         KEY(1, 0, GROUP_0 | KEY_UP),
  62         KEY(2, 0, GROUP_1 | KEY_F5),
  63         KEY(0, 1, GROUP_0 | KEY_LEFT),
  64         KEY(1, 1, GROUP_0 | KEY_ENTER),
  65         KEY(2, 1, GROUP_0 | KEY_RIGHT),
  66         KEY(0, 2, GROUP_1 | KEY_ESC),
  67         KEY(1, 2, GROUP_0 | KEY_DOWN),
  68         KEY(2, 2, GROUP_1 | KEY_F4),
  69         KEY(0, 3, GROUP_2 | KEY_F7),
  70         KEY(1, 3, GROUP_2 | KEY_F8),
  71         KEY(2, 3, GROUP_2 | KEY_F6),
  72 };
  73
  74 static struct resource nokia770_kp_resources[] = {
  75         [0] = {
  76                 .start  = INT_KEYBOARD,
  77                 .end    = INT_KEYBOARD,
  78                 .flags  = IORESOURCE_IRQ,
  79         },
  80 };
  81
  82 static const struct matrix_keymap_data nokia770_keymap_data = {
  83         .keymap         = nokia770_keymap,
  84         .keymap_size    = ARRAY_SIZE(nokia770_keymap),
  85 };
  86
  87 static struct omap_kp_platform_data nokia770_kp_data = {
  88         .rows           = 8,
  89         .cols           = 8,
  90         .keymap_data    = &nokia770_keymap_data,
  91         .delay          = 4,
  92 };
  93
  94 static struct platform_device nokia770_kp_device = {
  95         .name           = "omap-keypad",
  96         .id             = -1,
  97         .dev            = {
  98                 .platform_data = &nokia770_kp_data,
  99         },
 100         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
 101         .resource       = nokia770_kp_resources,
 102 };
 103
 104 static struct platform_device *nokia770_devices[] __initdata = {
 105         &nokia770_kp_device,
 106 };
 107
 108 static struct mipid_platform_data nokia770_mipid_platform_data = { };
 109
 110 static const struct omap_lcd_config nokia770_lcd_config __initconst = {
 111         .ctrl_name      = "hwa742",
 112 };
 113
 114 static const struct property_entry nokia770_mipid_props[] = {
 115         PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
 116                             13, GPIO_ACTIVE_LOW),
 117         { }
 118 };
 119
 120 static const struct software_node nokia770_mipid_swnode = {
 121         .name = "lcd_mipid",
 122         .properties = nokia770_mipid_props,
 123 };
 124
 125 static void __init mipid_dev_init(void)
 126 {
 127         nokia770_mipid_platform_data.data_lines = 16;
 128
 129         omapfb_set_lcd_config(&nokia770_lcd_config);
 130 }
 131
 132 static const struct property_entry nokia770_ads7846_props[] = {
 133         PROPERTY_ENTRY_STRING("compatible", "ti,ads7846"),
 134         PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
 135         PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
 136         PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
 137         PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
 138         PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
 139         PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
 140         PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
 141         PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
 142                             ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_LOW),
 143         { }
 144 };
 145
 146 static const struct software_node nokia770_ads7846_swnode = {
 147         .name = "ads7846",
 148         .properties = nokia770_ads7846_props,
 149 };
 150
 151 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 152         [0] = {
 153                 .modalias       = "lcd_mipid",
 154                 .bus_num        = 2,
 155                 .chip_select    = 3,
 156                 .max_speed_hz   = 12000000,
 157                 .platform_data  = &nokia770_mipid_platform_data,
 158                 .swnode         = &nokia770_mipid_swnode,
 159         },
 160         [1] = {
 161                 .modalias       = "ads7846",
 162                 .bus_num        = 2,
 163                 .chip_select    = 0,
 164                 .max_speed_hz   = 2500000,
 165                 .swnode         = &nokia770_ads7846_swnode,
 166         },
 167 };
 168
 169 static void __init hwa742_dev_init(void)
 170 {
 171         clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
 172 }
 173
 174 /* assume no Mini-AB port */
 175
 176 static struct omap_usb_config nokia770_usb_config __initdata = {
 177         .otg            = 1,
 178         .register_host  = 1,
 179         .register_dev   = 1,
 180         .hmc_mode       = 16,
 181         .pins[0]        = 6,
 182         .extcon         = "tahvo-usb",
 183 };
 184
 185 #if IS_ENABLED(CONFIG_MMC_OMAP)
 186
 187 static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
 188         .dev_id = "mmci-omap.1",
 189         .table = {
 190                 /* Slot index 0, VSD power, GPIO 41 */
 191                 GPIO_LOOKUP_IDX("gpio-32-47", 9,
 192                                 "vsd", 0, GPIO_ACTIVE_HIGH),
 193                 /* Slot index 0, switch, GPIO 23 */
 194                 GPIO_LOOKUP_IDX("gpio-16-31", 7,
 195                                 "cover", 0, GPIO_ACTIVE_HIGH),
 196                 { }
 197         },
 198 };
 199
 200 static struct omap_mmc_platform_data nokia770_mmc2_data = {
 201         .nr_slots                       = 1,
 202         .max_freq                       = 12000000,
 203         .slots[0]       = {
 204                 .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 205                 .name                   = "mmcblk",
 206         },
 207 };
 208
 209 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
 210
 211 static void __init nokia770_mmc_init(void)
 212 {
 213         gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
 214         /* Only the second MMC controller is used */
 215         nokia770_mmc_data[1] = &nokia770_mmc2_data;
 216         omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
 217 }
 218
 219 #else
 220 static inline void nokia770_mmc_init(void)
 221 {
 222 }
 223 #endif
 224
 225 #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
 226
 227 static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
 228         SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 9, 0),
 229         SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 10, 0),
 230         SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 11, 0),
 231 };
 232
 233 static const struct property_entry nokia770_cbus_props[] = {
 234         PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
 235         { }
 236 };
 237
 238 static struct platform_device nokia770_cbus_device = {
 239         .name   = "i2c-cbus-gpio",
 240         .id     = 2,
 241 };
 242
 243 static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
 244         {
 245                 I2C_BOARD_INFO("retu", 0x01),
 246         },
 247         {
 248                 I2C_BOARD_INFO("tahvo", 0x02),
 249         },
 250 };
 251
 252 static void __init nokia770_cbus_init(void)
 253 {
 254         struct gpio_desc *d;
 255         int irq;
 256
 257         d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
 258         if (IS_ERR(d)) {
 259                 pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
 260         } else {
 261                 irq = gpiod_to_irq(d);
 262                 irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
 263                 nokia770_i2c_board_info_2[0].irq = irq;
 264         }
 265         d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
 266         if (IS_ERR(d)) {
 267                 pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
 268         } else {
 269                 irq = gpiod_to_irq(d);
 270                 irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
 271                 nokia770_i2c_board_info_2[1].irq = irq;
 272         }
 273         i2c_register_board_info(2, nokia770_i2c_board_info_2,
 274                                 ARRAY_SIZE(nokia770_i2c_board_info_2));
 275         device_create_managed_software_node(&nokia770_cbus_device.dev,
 276                                             nokia770_cbus_props, NULL);
 277         platform_device_register(&nokia770_cbus_device);
 278 }
 279 #else /* CONFIG_I2C_CBUS_GPIO */
 280 static void __init nokia770_cbus_init(void)
 281 {
 282 }
 283 #endif /* CONFIG_I2C_CBUS_GPIO */
 284
 285 static struct gpiod_lookup_table nokia770_irq_gpio_table = {
 286         .dev_id = NULL,
 287         .table = {
 288                 /* GPIO used by SPI device 1 */
 289                 GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
 290                             GPIO_ACTIVE_HIGH),
 291                 /* GPIO used for retu IRQ */
 292                 GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
 293                             GPIO_ACTIVE_HIGH),
 294                 /* GPIO used for tahvo IRQ */
 295                 GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
 296                             GPIO_ACTIVE_HIGH),
 297                 /* GPIOs used by serial wakeup IRQs */
 298                 GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
 299                             GPIO_ACTIVE_HIGH),
 300                 GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
 301                             GPIO_ACTIVE_HIGH),
 302                 GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
 303                             GPIO_ACTIVE_HIGH),
 304                 { }
 305         },
 306 };
 307
 308 static void __init omap_nokia770_init(void)
 309 {
 310         struct gpio_desc *d;
 311
 312         /* On Nokia 770, the SleepX signal is masked with an
 313          * MPUIO line by default.  It has to be unmasked for it
 314          * to become functional */
 315
 316         /* SleepX mask direction */
 317         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
 318         /* Unmask SleepX signal */
 319         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
 320
 321         software_node_register_node_group(nokia770_gpiochip_nodes);
 322         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 323
 324         gpiod_add_lookup_table(&nokia770_irq_gpio_table);
 325         d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
 326         if (IS_ERR(d))
 327                 pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
 328         else
 329                 nokia770_spi_board_info[1].irq = gpiod_to_irq(d);
 330
 331         spi_register_board_info(nokia770_spi_board_info,
 332                                 ARRAY_SIZE(nokia770_spi_board_info));
 333         omap_serial_init();
 334         omap_register_i2c_bus(1, 100, NULL, 0);
 335         hwa742_dev_init();
 336         mipid_dev_init();
 337         omap1_usb_init(&nokia770_usb_config);
 338         nokia770_mmc_init();
 339         nokia770_cbus_init();
 340 }
 341
 342 MACHINE_START(NOKIA770, "Nokia 770")
 343         .atag_offset    = 0x100,
 344         .map_io         = omap1_map_io,
 345         .init_early     = omap1_init_early,
 346         .init_irq       = omap1_init_irq,
 347         .init_machine   = omap_nokia770_init,
 348         .init_late      = omap1_init_late,
 349         .init_time      = omap1_timer_init,
 350         .restart        = omap1_restart,
 351 MACHINE_END