| 1 | /* |
| 2 | * Copyright (C) 2009 Texas Instruments Inc. |
| 3 | * Mikkel Christensen <mlc@ti.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/gpio.h> |
| 13 | #include <linux/serial_8250.h> |
| 14 | #include <linux/smsc911x.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | |
| 17 | #include <linux/regulator/fixed.h> |
| 18 | #include <linux/regulator/machine.h> |
| 19 | |
| 20 | #include "gpmc.h" |
| 21 | #include "gpmc-smsc911x.h" |
| 22 | |
| 23 | #include "board-zoom.h" |
| 24 | |
| 25 | #include "soc.h" |
| 26 | #include "common.h" |
| 27 | |
| 28 | #define ZOOM_SMSC911X_CS 7 |
| 29 | #define ZOOM_SMSC911X_GPIO 158 |
| 30 | #define ZOOM_QUADUART_CS 3 |
| 31 | #define ZOOM_QUADUART_GPIO 102 |
| 32 | #define ZOOM_QUADUART_RST_GPIO 152 |
| 33 | #define QUART_CLK 1843200 |
| 34 | #define DEBUG_BASE 0x08000000 |
| 35 | #define ZOOM_ETHR_START DEBUG_BASE |
| 36 | |
| 37 | static struct omap_smsc911x_platform_data zoom_smsc911x_cfg = { |
| 38 | .cs = ZOOM_SMSC911X_CS, |
| 39 | .gpio_irq = ZOOM_SMSC911X_GPIO, |
| 40 | .gpio_reset = -EINVAL, |
| 41 | .flags = SMSC911X_USE_32BIT, |
| 42 | }; |
| 43 | |
| 44 | static inline void __init zoom_init_smsc911x(void) |
| 45 | { |
| 46 | gpmc_smsc911x_init(&zoom_smsc911x_cfg); |
| 47 | } |
| 48 | |
| 49 | static struct plat_serial8250_port serial_platform_data[] = { |
| 50 | { |
| 51 | .mapbase = ZOOM_UART_BASE, |
| 52 | .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ, |
| 53 | .irqflags = IRQF_SHARED | IRQF_TRIGGER_RISING, |
| 54 | .iotype = UPIO_MEM, |
| 55 | .regshift = 1, |
| 56 | .uartclk = QUART_CLK, |
| 57 | }, { |
| 58 | .flags = 0 |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | static struct platform_device zoom_debugboard_serial_device = { |
| 63 | .name = "serial8250", |
| 64 | .id = PLAT8250_DEV_PLATFORM, |
| 65 | .dev = { |
| 66 | .platform_data = serial_platform_data, |
| 67 | }, |
| 68 | }; |
| 69 | |
| 70 | static inline void __init zoom_init_quaduart(void) |
| 71 | { |
| 72 | int quart_cs; |
| 73 | unsigned long cs_mem_base; |
| 74 | int quart_gpio = 0; |
| 75 | |
| 76 | if (gpio_request_one(ZOOM_QUADUART_RST_GPIO, |
| 77 | GPIOF_OUT_INIT_LOW, |
| 78 | "TL16CP754C GPIO") < 0) { |
| 79 | pr_err("Failed to request GPIO%d for TL16CP754C\n", |
| 80 | ZOOM_QUADUART_RST_GPIO); |
| 81 | return; |
| 82 | } |
| 83 | |
| 84 | quart_cs = ZOOM_QUADUART_CS; |
| 85 | |
| 86 | if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) { |
| 87 | pr_err("Failed to request GPMC mem for Quad UART(TL16CP754C)\n"); |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | quart_gpio = ZOOM_QUADUART_GPIO; |
| 92 | |
| 93 | if (gpio_request_one(quart_gpio, GPIOF_IN, "TL16CP754C GPIO") < 0) |
| 94 | printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n", |
| 95 | quart_gpio); |
| 96 | |
| 97 | serial_platform_data[0].irq = gpio_to_irq(102); |
| 98 | } |
| 99 | |
| 100 | static inline int omap_zoom_debugboard_detect(void) |
| 101 | { |
| 102 | int debug_board_detect = 0; |
| 103 | int ret = 1; |
| 104 | |
| 105 | debug_board_detect = ZOOM_SMSC911X_GPIO; |
| 106 | |
| 107 | if (gpio_request_one(debug_board_detect, GPIOF_IN, |
| 108 | "Zoom debug board detect") < 0) { |
| 109 | pr_err("Failed to request GPIO%d for Zoom debug board detect\n", |
| 110 | debug_board_detect); |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | if (!gpio_get_value(debug_board_detect)) { |
| 115 | ret = 0; |
| 116 | } |
| 117 | gpio_free(debug_board_detect); |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | static struct platform_device *zoom_devices[] __initdata = { |
| 122 | &zoom_debugboard_serial_device, |
| 123 | }; |
| 124 | |
| 125 | static struct regulator_consumer_supply dummy_supplies[] = { |
| 126 | REGULATOR_SUPPLY("vddvario", "smsc911x.0"), |
| 127 | REGULATOR_SUPPLY("vdd33a", "smsc911x.0"), |
| 128 | }; |
| 129 | |
| 130 | int __init zoom_debugboard_init(void) |
| 131 | { |
| 132 | if (!omap_zoom_debugboard_detect()) |
| 133 | return 0; |
| 134 | |
| 135 | regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); |
| 136 | zoom_init_smsc911x(); |
| 137 | zoom_init_quaduart(); |
| 138 | return platform_add_devices(zoom_devices, ARRAY_SIZE(zoom_devices)); |
| 139 | } |