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-rw-r--r--arch/arm/mach-omap1/board-ams-delta.c889
1 files changed, 889 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
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--- /dev/null
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -0,0 +1,889 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/arch/arm/mach-omap1/board-ams-delta.c
+ *
+ * Modified from board-generic.c
+ *
+ * Board specific inits for the Amstrad E3 (codename Delta) videophone
+ *
+ * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
+ */
+#include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/leds.h>
+#include <linux/mtd/nand-gpio.h>
+#include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
+#include <linux/serial_8250.h>
+#include <linux/export.h>
+#include <linux/omapfb.h>
+#include <linux/io.h>
+#include <linux/platform_data/gpio-omap.h>
+#include <linux/soc/ti/omap1-mux.h>
+
+#include <asm/serial.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <linux/platform_data/keypad-omap.h>
+
+#include "hardware.h"
+#include "usb.h"
+#include "ams-delta-fiq.h"
+#include "board-ams-delta.h"
+#include "iomap.h"
+#include "common.h"
+
+static const unsigned int ams_delta_keymap[] = {
+ KEY(0, 0, KEY_F1), /* Advert */
+
+ KEY(0, 3, KEY_COFFEE), /* Games */
+ KEY(0, 2, KEY_QUESTION), /* Directory */
+ KEY(2, 3, KEY_CONNECT), /* Internet */
+ KEY(1, 2, KEY_SHOP), /* Services */
+ KEY(1, 1, KEY_PHONE), /* VoiceMail */
+
+ KEY(0, 1, KEY_DELETE), /* Delete */
+ KEY(2, 2, KEY_PLAY), /* Play */
+ KEY(1, 0, KEY_PAGEUP), /* Up */
+ KEY(1, 3, KEY_PAGEDOWN), /* Down */
+ KEY(2, 0, KEY_EMAIL), /* ReadEmail */
+ KEY(2, 1, KEY_STOP), /* Stop */
+
+ /* Numeric keypad portion */
+ KEY(0, 7, KEY_KP1),
+ KEY(0, 6, KEY_KP2),
+ KEY(0, 5, KEY_KP3),
+ KEY(1, 7, KEY_KP4),
+ KEY(1, 6, KEY_KP5),
+ KEY(1, 5, KEY_KP6),
+ KEY(2, 7, KEY_KP7),
+ KEY(2, 6, KEY_KP8),
+ KEY(2, 5, KEY_KP9),
+ KEY(3, 6, KEY_KP0),
+ KEY(3, 7, KEY_KPASTERISK),
+ KEY(3, 5, KEY_KPDOT), /* # key */
+ KEY(7, 2, KEY_NUMLOCK), /* Mute */
+ KEY(7, 1, KEY_KPMINUS), /* Recall */
+ KEY(6, 1, KEY_KPPLUS), /* Redial */
+ KEY(7, 6, KEY_KPSLASH), /* Handsfree */
+ KEY(6, 0, KEY_ENTER), /* Video */
+
+ KEY(7, 4, KEY_CAMERA), /* Photo */
+
+ KEY(0, 4, KEY_F2), /* Home */
+ KEY(1, 4, KEY_F3), /* Office */
+ KEY(2, 4, KEY_F4), /* Mobile */
+ KEY(7, 7, KEY_F5), /* SMS */
+ KEY(7, 5, KEY_F6), /* Email */
+
+ /* QWERTY portion of keypad */
+ KEY(3, 4, KEY_Q),
+ KEY(3, 3, KEY_W),
+ KEY(3, 2, KEY_E),
+ KEY(3, 1, KEY_R),
+ KEY(3, 0, KEY_T),
+ KEY(4, 7, KEY_Y),
+ KEY(4, 6, KEY_U),
+ KEY(4, 5, KEY_I),
+ KEY(4, 4, KEY_O),
+ KEY(4, 3, KEY_P),
+
+ KEY(4, 2, KEY_A),
+ KEY(4, 1, KEY_S),
+ KEY(4, 0, KEY_D),
+ KEY(5, 7, KEY_F),
+ KEY(5, 6, KEY_G),
+ KEY(5, 5, KEY_H),
+ KEY(5, 4, KEY_J),
+ KEY(5, 3, KEY_K),
+ KEY(5, 2, KEY_L),
+
+ KEY(5, 1, KEY_Z),
+ KEY(5, 0, KEY_X),
+ KEY(6, 7, KEY_C),
+ KEY(6, 6, KEY_V),
+ KEY(6, 5, KEY_B),
+ KEY(6, 4, KEY_N),
+ KEY(6, 3, KEY_M),
+ KEY(6, 2, KEY_SPACE),
+
+ KEY(7, 0, KEY_LEFTSHIFT), /* Vol up */
+ KEY(7, 3, KEY_LEFTCTRL), /* Vol down */
+};
+
+#define LATCH1_PHYS 0x01000000
+#define LATCH1_VIRT 0xEA000000
+#define MODEM_PHYS 0x04000000
+#define MODEM_VIRT 0xEB000000
+#define LATCH2_PHYS 0x08000000
+#define LATCH2_VIRT 0xEC000000
+
+static struct map_desc ams_delta_io_desc[] __initdata = {
+ /* AMS_DELTA_LATCH1 */
+ {
+ .virtual = LATCH1_VIRT,
+ .pfn = __phys_to_pfn(LATCH1_PHYS),
+ .length = 0x01000000,
+ .type = MT_DEVICE
+ },
+ /* AMS_DELTA_LATCH2 */
+ {
+ .virtual = LATCH2_VIRT,
+ .pfn = __phys_to_pfn(LATCH2_PHYS),
+ .length = 0x01000000,
+ .type = MT_DEVICE
+ },
+ /* AMS_DELTA_MODEM */
+ {
+ .virtual = MODEM_VIRT,
+ .pfn = __phys_to_pfn(MODEM_PHYS),
+ .length = 0x01000000,
+ .type = MT_DEVICE
+ }
+};
+
+static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
+ .ctrl_name = "internal",
+};
+
+static struct omap_usb_config ams_delta_usb_config __initdata = {
+ .register_host = 1,
+ .hmc_mode = 16,
+ .pins[0] = 2,
+};
+
+#define LATCH1_NGPIO 8
+
+static struct resource latch1_resources[] = {
+ [0] = {
+ .name = "dat",
+ .start = LATCH1_PHYS,
+ .end = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+#define LATCH1_LABEL "latch1"
+
+static struct bgpio_pdata latch1_pdata = {
+ .label = LATCH1_LABEL,
+ .base = -1,
+ .ngpio = LATCH1_NGPIO,
+};
+
+static struct platform_device latch1_gpio_device = {
+ .name = "basic-mmio-gpio",
+ .id = 0,
+ .resource = latch1_resources,
+ .num_resources = ARRAY_SIZE(latch1_resources),
+ .dev = {
+ .platform_data = &latch1_pdata,
+ },
+};
+
+#define LATCH1_PIN_LED_CAMERA 0
+#define LATCH1_PIN_LED_ADVERT 1
+#define LATCH1_PIN_LED_MAIL 2
+#define LATCH1_PIN_LED_HANDSFREE 3
+#define LATCH1_PIN_LED_VOICEMAIL 4
+#define LATCH1_PIN_LED_VOICE 5
+#define LATCH1_PIN_DOCKIT1 6
+#define LATCH1_PIN_DOCKIT2 7
+
+#define LATCH2_NGPIO 16
+
+static struct resource latch2_resources[] = {
+ [0] = {
+ .name = "dat",
+ .start = LATCH2_PHYS,
+ .end = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+#define LATCH2_LABEL "latch2"
+
+static struct bgpio_pdata latch2_pdata = {
+ .label = LATCH2_LABEL,
+ .base = -1,
+ .ngpio = LATCH2_NGPIO,
+};
+
+static struct platform_device latch2_gpio_device = {
+ .name = "basic-mmio-gpio",
+ .id = 1,
+ .resource = latch2_resources,
+ .num_resources = ARRAY_SIZE(latch2_resources),
+ .dev = {
+ .platform_data = &latch2_pdata,
+ },
+};
+
+#define LATCH2_PIN_LCD_VBLEN 0
+#define LATCH2_PIN_LCD_NDISP 1
+#define LATCH2_PIN_NAND_NCE 2
+#define LATCH2_PIN_NAND_NRE 3
+#define LATCH2_PIN_NAND_NWP 4
+#define LATCH2_PIN_NAND_NWE 5
+#define LATCH2_PIN_NAND_ALE 6
+#define LATCH2_PIN_NAND_CLE 7
+#define LATCH2_PIN_KEYBRD_PWR 8
+#define LATCH2_PIN_KEYBRD_DATAOUT 9
+#define LATCH2_PIN_SCARD_RSTIN 10
+#define LATCH2_PIN_SCARD_CMDVCC 11
+#define LATCH2_PIN_MODEM_NRESET 12
+#define LATCH2_PIN_MODEM_CODEC 13
+#define LATCH2_PIN_HANDSFREE_MUTE 14
+#define LATCH2_PIN_HANDSET_MUTE 15
+
+static struct regulator_consumer_supply modem_nreset_consumers[] = {
+ REGULATOR_SUPPLY("RESET#", "serial8250.1"),
+ REGULATOR_SUPPLY("POR", "cx20442-codec"),
+};
+
+static struct regulator_init_data modem_nreset_data = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .boot_on = 1,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
+ .consumer_supplies = modem_nreset_consumers,
+};
+
+static struct fixed_voltage_config modem_nreset_config = {
+ .supply_name = "modem_nreset",
+ .microvolts = 3300000,
+ .startup_delay = 25000,
+ .enabled_at_boot = 1,
+ .init_data = &modem_nreset_data,
+};
+
+static struct platform_device modem_nreset_device = {
+ .name = "reg-fixed-voltage",
+ .id = -1,
+ .dev = {
+ .platform_data = &modem_nreset_config,
+ },
+};
+
+static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
+ .dev_id = "reg-fixed-voltage",
+ .table = {
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
+ NULL, GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
+struct modem_private_data {
+ struct regulator *regulator;
+};
+
+static struct modem_private_data modem_priv;
+
+/*
+ * Define partitions for flash device
+ */
+
+static struct mtd_partition partition_info[] = {
+ { .name = "Kernel",
+ .offset = 0,
+ .size = 3 * SZ_1M + SZ_512K },
+ { .name = "u-boot",
+ .offset = 3 * SZ_1M + SZ_512K,
+ .size = SZ_256K },
+ { .name = "u-boot params",
+ .offset = 3 * SZ_1M + SZ_512K + SZ_256K,
+ .size = SZ_256K },
+ { .name = "Amstrad LDR",
+ .offset = 4 * SZ_1M,
+ .size = SZ_256K },
+ { .name = "File system",
+ .offset = 4 * SZ_1M + 1 * SZ_256K,
+ .size = 27 * SZ_1M },
+ { .name = "PBL reserved",
+ .offset = 32 * SZ_1M - 3 * SZ_256K,
+ .size = 3 * SZ_256K },
+};
+
+static struct gpio_nand_platdata nand_platdata = {
+ .parts = partition_info,
+ .num_parts = ARRAY_SIZE(partition_info),
+};
+
+static struct platform_device ams_delta_nand_device = {
+ .name = "ams-delta-nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_platdata,
+ },
+};
+
+#define OMAP_GPIO_LABEL "gpio-0-15"
+#define OMAP_MPUIO_LABEL "mpuio"
+
+static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
+ .table = {
+ GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
+ 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
+ GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
+ { },
+ },
+};
+
+static struct resource ams_delta_kp_resources[] = {
+ [0] = {
+ .start = INT_KEYBOARD,
+ .end = INT_KEYBOARD,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static const struct matrix_keymap_data ams_delta_keymap_data = {
+ .keymap = ams_delta_keymap,
+ .keymap_size = ARRAY_SIZE(ams_delta_keymap),
+};
+
+static struct omap_kp_platform_data ams_delta_kp_data = {
+ .rows = 8,
+ .cols = 8,
+ .keymap_data = &ams_delta_keymap_data,
+ .delay = 9,
+};
+
+static struct platform_device ams_delta_kp_device = {
+ .name = "omap-keypad",
+ .id = -1,
+ .dev = {
+ .platform_data = &ams_delta_kp_data,
+ },
+ .num_resources = ARRAY_SIZE(ams_delta_kp_resources),
+ .resource = ams_delta_kp_resources,
+};
+
+static struct platform_device ams_delta_lcd_device = {
+ .name = "lcd_ams_delta",
+ .id = -1,
+};
+
+static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
+ .table = {
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
+ { },
+ },
+};
+
+static struct gpio_led gpio_leds[] __initdata = {
+ [LATCH1_PIN_LED_CAMERA] = {
+ .name = "camera",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+ [LATCH1_PIN_LED_ADVERT] = {
+ .name = "advert",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+ [LATCH1_PIN_LED_MAIL] = {
+ .name = "email",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+ [LATCH1_PIN_LED_HANDSFREE] = {
+ .name = "handsfree",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+ [LATCH1_PIN_LED_VOICEMAIL] = {
+ .name = "voicemail",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+ [LATCH1_PIN_LED_VOICE] = {
+ .name = "voice",
+ .default_state = LEDS_GPIO_DEFSTATE_OFF,
+ },
+};
+
+static const struct gpio_led_platform_data leds_pdata __initconst = {
+ .leds = gpio_leds,
+ .num_leds = ARRAY_SIZE(gpio_leds),
+};
+
+static struct gpiod_lookup_table leds_gpio_table = {
+ .table = {
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
+ LATCH1_PIN_LED_CAMERA, 0),
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
+ LATCH1_PIN_LED_ADVERT, 0),
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
+ LATCH1_PIN_LED_MAIL, 0),
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
+ LATCH1_PIN_LED_HANDSFREE, 0),
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
+ LATCH1_PIN_LED_VOICEMAIL, 0),
+ GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
+ LATCH1_PIN_LED_VOICE, 0),
+ { },
+ },
+};
+
+static struct platform_device ams_delta_audio_device = {
+ .name = "ams-delta-audio",
+ .id = -1,
+};
+
+static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
+ .table = {
+ GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
+ "hook_switch", 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
+ "modem_codec", 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
+ "handsfree_mute", 0),
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
+ "handset_mute", 0),
+ { },
+ },
+};
+
+static struct platform_device cx20442_codec_device = {
+ .name = "cx20442-codec",
+ .id = -1,
+};
+
+static struct resource ams_delta_serio_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ /*
+ * Initialize IRQ resource with invalid IRQ number.
+ * It will be replaced with dynamically allocated GPIO IRQ
+ * obtained from GPIO chip as soon as the chip is available.
+ */
+ .start = -EINVAL,
+ .end = -EINVAL,
+ },
+};
+
+static struct platform_device ams_delta_serio_device = {
+ .name = "ams-delta-serio",
+ .id = PLATFORM_DEVID_NONE,
+ .dev = {
+ /*
+ * Initialize .platform_data explicitly with NULL to
+ * indicate it is going to be used. It will be replaced
+ * with FIQ buffer address as soon as FIQ is initialized.
+ */
+ .platform_data = NULL,
+ },
+ .num_resources = ARRAY_SIZE(ams_delta_serio_resources),
+ .resource = ams_delta_serio_resources,
+};
+
+static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
+ /*
+ * Initialize supply .dev_name with NULL. It will be replaced
+ * with serio dev_name() as soon as the serio device is registered.
+ */
+ REGULATOR_SUPPLY("vcc", NULL),
+};
+
+static struct regulator_init_data keybrd_pwr_initdata = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers),
+ .consumer_supplies = keybrd_pwr_consumers,
+};
+
+static struct fixed_voltage_config keybrd_pwr_config = {
+ .supply_name = "keybrd_pwr",
+ .microvolts = 5000000,
+ .init_data = &keybrd_pwr_initdata,
+};
+
+static struct platform_device keybrd_pwr_device = {
+ .name = "reg-fixed-voltage",
+ .id = PLATFORM_DEVID_AUTO,
+ .dev = {
+ .platform_data = &keybrd_pwr_config,
+ },
+};
+
+static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
+ .table = {
+ GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
+ GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
+static struct platform_device *ams_delta_devices[] __initdata = {
+ &latch1_gpio_device,
+ &latch2_gpio_device,
+ &ams_delta_kp_device,
+ &ams_delta_audio_device,
+ &ams_delta_serio_device,
+ &ams_delta_nand_device,
+ &ams_delta_lcd_device,
+ &cx20442_codec_device,
+};
+
+static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
+ &ams_delta_nreset_gpiod_table,
+ &ams_delta_audio_gpio_table,
+ &keybrd_pwr_gpio_table,
+ &ams_delta_lcd_gpio_table,
+ &ams_delta_nand_gpio_table,
+};
+
+/*
+ * Some drivers may not use GPIO lookup tables but need to be provided
+ * with GPIO numbers. The same applies to GPIO based IRQ lines - some
+ * drivers may even not use GPIO layer but expect just IRQ numbers.
+ * We could either define GPIO lookup tables then use them on behalf
+ * of those devices, or we can use GPIO driver level methods for
+ * identification of GPIO and IRQ numbers. For the purpose of the latter,
+ * defina a helper function which identifies GPIO chips by their labels.
+ */
+static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
+{
+ char *label = data;
+
+ return !strcmp(label, chip->label);
+}
+
+static struct gpiod_hog ams_delta_gpio_hogs[] = {
+ GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
+ GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
+ {},
+};
+
+static struct plat_serial8250_port ams_delta_modem_ports[];
+
+/*
+ * Obtain MODEM IRQ GPIO descriptor using its hardware pin
+ * number and assign related IRQ number to the MODEM port.
+ * Keep the GPIO descriptor open so nobody steps in.
+ */
+static void __init modem_assign_irq(struct gpio_chip *chip)
+{
+ struct gpio_desc *gpiod;
+
+ gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
+ "modem_irq", GPIO_ACTIVE_HIGH,
+ GPIOD_IN);
+ if (IS_ERR(gpiod)) {
+ pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
+ PTR_ERR(gpiod));
+ } else {
+ ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
+ }
+}
+
+/*
+ * The purpose of this function is to take care of proper initialization of
+ * devices and data structures which depend on GPIO lines provided by OMAP GPIO
+ * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
+ * The function may be called as soon as OMAP GPIO devices are probed.
+ * Since that happens at postcore_initcall, it can be called successfully
+ * from init_machine or later.
+ * Dependent devices may be registered from within this function or later.
+ */
+static void __init omap_gpio_deps_init(void)
+{
+ struct gpio_chip *chip;
+
+ chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
+ if (!chip) {
+ pr_err("%s: OMAP GPIO chip not found\n", __func__);
+ return;
+ }
+
+ /*
+ * Start with FIQ initialization as it may have to request
+ * and release successfully each OMAP GPIO pin in turn.
+ */
+ ams_delta_init_fiq(chip, &ams_delta_serio_device);
+
+ modem_assign_irq(chip);
+}
+
+/*
+ * Initialize latch2 pins with values which are safe for dependent on-board
+ * devices or useful for their successull initialization even before GPIO
+ * driver takes control over the latch pins:
+ * - LATCH2_PIN_LCD_VBLEN = 0
+ * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its
+ * driver takes control over it.
+ * - LATCH2_PIN_NAND_NCE = 0
+ * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write-
+ * protected before its driver takes
+ * control over it.
+ * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio
+ * driver takes control over it.
+ * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first
+ * byte of data received from attached
+ * keyboard when serio device is probed;
+ * the pin is also hogged low by the latch2
+ * GPIO driver as soon as it is ready.
+ * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for
+ * its successful probe even before a
+ * regulator it depends on, which in turn
+ * takes control over the pin, is set up.
+ * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port
+ * to the MODEM so the CODEC is under
+ * control even if audio driver doesn't
+ * take it over.
+ */
+static void __init ams_delta_latch2_init(void)
+{
+ u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
+
+ __raw_writew(latch2, IOMEM(LATCH2_VIRT));
+}
+
+static void __init ams_delta_init(void)
+{
+ struct platform_device *leds_pdev;
+
+ /* mux pins for uarts */
+ omap_cfg_reg(UART1_TX);
+ omap_cfg_reg(UART1_RTS);
+
+ /* parallel camera interface */
+ omap_cfg_reg(H19_1610_CAM_EXCLK);
+ omap_cfg_reg(J15_1610_CAM_LCLK);
+ omap_cfg_reg(L18_1610_CAM_VS);
+ omap_cfg_reg(L15_1610_CAM_HS);
+ omap_cfg_reg(L19_1610_CAM_D0);
+ omap_cfg_reg(K14_1610_CAM_D1);
+ omap_cfg_reg(K15_1610_CAM_D2);
+ omap_cfg_reg(K19_1610_CAM_D3);
+ omap_cfg_reg(K18_1610_CAM_D4);
+ omap_cfg_reg(J14_1610_CAM_D5);
+ omap_cfg_reg(J19_1610_CAM_D6);
+ omap_cfg_reg(J18_1610_CAM_D7);
+
+ omap_gpio_deps_init();
+ ams_delta_latch2_init();
+ gpiod_add_hogs(ams_delta_gpio_hogs);
+
+ omap_serial_init();
+ omap_register_i2c_bus(1, 100, NULL, 0);
+
+ omap1_usb_init(&ams_delta_usb_config);
+ platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
+
+ /*
+ * As soon as regulator consumers have been registered, assign their
+ * dev_names to consumer supply entries of respective regulators.
+ */
+ keybrd_pwr_consumers[0].dev_name =
+ dev_name(&ams_delta_serio_device.dev);
+
+ /*
+ * Once consumer supply entries are populated with dev_names,
+ * register regulator devices. At this stage only the keyboard
+ * power regulator has its consumer supply table fully populated.
+ */
+ platform_device_register(&keybrd_pwr_device);
+
+ /*
+ * As soon as GPIO consumers have been registered, assign
+ * their dev_names to respective GPIO lookup tables.
+ */
+ ams_delta_audio_gpio_table.dev_id =
+ dev_name(&ams_delta_audio_device.dev);
+ keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
+ ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
+ ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
+
+ /*
+ * Once GPIO lookup tables are populated with dev_names, register them.
+ */
+ gpiod_add_lookup_tables(ams_delta_gpio_tables,
+ ARRAY_SIZE(ams_delta_gpio_tables));
+
+ leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
+ if (!IS_ERR_OR_NULL(leds_pdev)) {
+ leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
+ gpiod_add_lookup_table(&leds_gpio_table);
+ }
+
+ omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
+
+ omapfb_set_lcd_config(&ams_delta_lcd_config);
+}
+
+static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
+{
+ struct modem_private_data *priv = port->private_data;
+ int ret;
+
+ if (!priv)
+ return;
+
+ if (IS_ERR(priv->regulator))
+ return;
+
+ if (state == old)
+ return;
+
+ if (state == 0)
+ ret = regulator_enable(priv->regulator);
+ else if (old == 0)
+ ret = regulator_disable(priv->regulator);
+ else
+ ret = 0;
+
+ if (ret)
+ dev_warn(port->dev,
+ "ams_delta modem_pm: failed to %sable regulator: %d\n",
+ state ? "dis" : "en", ret);
+}
+
+static struct plat_serial8250_port ams_delta_modem_ports[] = {
+ {
+ .membase = IOMEM(MODEM_VIRT),
+ .mapbase = MODEM_PHYS,
+ .irq = IRQ_NOTCONNECTED, /* changed later */
+ .flags = UPF_BOOT_AUTOCONF,
+ .irqflags = IRQF_TRIGGER_RISING,
+ .iotype = UPIO_MEM,
+ .regshift = 1,
+ .uartclk = BASE_BAUD * 16,
+ .pm = modem_pm,
+ .private_data = &modem_priv,
+ },
+ { },
+};
+
+static struct platform_device ams_delta_modem_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM1,
+ .dev = {
+ .platform_data = ams_delta_modem_ports,
+ },
+};
+
+static int __init modem_nreset_init(void)
+{
+ int err;
+
+ err = platform_device_register(&modem_nreset_device);
+ if (err)
+ pr_err("Couldn't register the modem regulator device\n");
+
+ return err;
+}
+
+
+/*
+ * This function expects MODEM IRQ number already assigned to the port.
+ * The MODEM device requires its RESET# pin kept high during probe.
+ * That requirement can be fulfilled in several ways:
+ * - with a descriptor of already functional modem_nreset regulator
+ * assigned to the MODEM private data,
+ * - with the regulator not yet controlled by modem_pm function but
+ * already enabled by default on probe,
+ * - before the modem_nreset regulator is probed, with the pin already
+ * set high explicitly.
+ * The last one is already guaranteed by ams_delta_latch2_init() called
+ * from machine_init.
+ * In order to avoid taking over ttyS0 device slot, the MODEM device
+ * should be registered after OMAP serial ports. Since those ports
+ * are registered at arch_initcall, this function can be called safely
+ * at arch_initcall_sync earliest.
+ */
+static int __init ams_delta_modem_init(void)
+{
+ int err;
+
+ if (!machine_is_ams_delta())
+ return -ENODEV;
+
+ omap_cfg_reg(M14_1510_GPIO2);
+
+ /* Initialize the modem_nreset regulator consumer before use */
+ modem_priv.regulator = ERR_PTR(-ENODEV);
+
+ err = platform_device_register(&ams_delta_modem_device);
+
+ return err;
+}
+arch_initcall_sync(ams_delta_modem_init);
+
+static int __init late_init(void)
+{
+ int err;
+
+ err = modem_nreset_init();
+ if (err)
+ return err;
+
+ /*
+ * Once the modem device is registered, the modem_nreset
+ * regulator can be requested on behalf of that device.
+ */
+ modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
+ "RESET#");
+ if (IS_ERR(modem_priv.regulator)) {
+ err = PTR_ERR(modem_priv.regulator);
+ goto unregister;
+ }
+ return 0;
+
+unregister:
+ platform_device_unregister(&ams_delta_modem_device);
+ return err;
+}
+
+static void __init ams_delta_init_late(void)
+{
+ omap1_init_late();
+ late_init();
+}
+
+static void __init ams_delta_map_io(void)
+{
+ omap15xx_map_io();
+ iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
+}
+
+MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
+ /* Maintainer: Jonathan McDowell <noodles@earth.li> */
+ .atag_offset = 0x100,
+ .map_io = ams_delta_map_io,
+ .init_early = omap1_init_early,
+ .init_irq = omap1_init_irq,
+ .handle_irq = omap1_handle_irq,
+ .init_machine = ams_delta_init,
+ .init_late = ams_delta_init_late,
+ .init_time = omap1_timer_init,
+ .restart = omap1_restart,
+MACHINE_END
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 18:04:19 +0000