projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 16b32fd0 DB |
1 | /* |
| 2 | * Bluetooth built-in chip control | |
| 3 | * | |
| 4 | * Copyright (c) 2008 Dmitry Baryshkov | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | * | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/kernel.h> | |
| 13 | #include <linux/module.h> | |
| 14 | #include <linux/platform_device.h> | |
| 15 | #include <linux/gpio.h> | |
| 16 | #include <linux/delay.h> | |
| 17 | #include <linux/rfkill.h> | |
| 18 | ||
| a09e64fb | 19 | #include <mach/tosa_bt.h> |
| 16b32fd0 DB |
20 | |
| 21 | static void tosa_bt_on(struct tosa_bt_data *data) | |
| 22 | { | |
| 23 | gpio_set_value(data->gpio_reset, 0); | |
| 24 | gpio_set_value(data->gpio_pwr, 1); | |
| 25 | gpio_set_value(data->gpio_reset, 1); | |
| 26 | mdelay(20); | |
| 27 | gpio_set_value(data->gpio_reset, 0); | |
| 28 | } | |
| 29 | ||
| 30 | static void tosa_bt_off(struct tosa_bt_data *data) | |
| 31 | { | |
| 32 | gpio_set_value(data->gpio_reset, 1); | |
| 33 | mdelay(10); | |
| 34 | gpio_set_value(data->gpio_pwr, 0); | |
| 35 | gpio_set_value(data->gpio_reset, 0); | |
| 36 | } | |
| 37 | ||
| 19d337df | 38 | static int tosa_bt_set_block(void *data, bool blocked) |
| 16b32fd0 | 39 | { |
| 19d337df | 40 | pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on"); |
| 16b32fd0 | 41 | |
| 19d337df | 42 | if (!blocked) { |
| 16b32fd0 DB |
43 | pr_info("TOSA_BT: going ON\n"); |
| 44 | tosa_bt_on(data); | |
| 45 | } else { | |
| 46 | pr_info("TOSA_BT: going OFF\n"); | |
| 47 | tosa_bt_off(data); | |
| 48 | } | |
| 19d337df | 49 | |
| 16b32fd0 DB |
50 | return 0; |
| 51 | } | |
| 52 | ||
| 19d337df JB |
53 | static const struct rfkill_ops tosa_bt_rfkill_ops = { |
| 54 | .set_block = tosa_bt_set_block, | |
| 55 | }; | |
| 56 | ||
| 16b32fd0 DB |
57 | static int tosa_bt_probe(struct platform_device *dev) |
| 58 | { | |
| 59 | int rc; | |
| 60 | struct rfkill *rfk; | |
| 61 | ||
| 62 | struct tosa_bt_data *data = dev->dev.platform_data; | |
| 63 | ||
| 64 | rc = gpio_request(data->gpio_reset, "Bluetooth reset"); | |
| 65 | if (rc) | |
| 66 | goto err_reset; | |
| 67 | rc = gpio_direction_output(data->gpio_reset, 0); | |
| 68 | if (rc) | |
| 69 | goto err_reset_dir; | |
| 70 | rc = gpio_request(data->gpio_pwr, "Bluetooth power"); | |
| 71 | if (rc) | |
| 72 | goto err_pwr; | |
| 73 | rc = gpio_direction_output(data->gpio_pwr, 0); | |
| 74 | if (rc) | |
| 75 | goto err_pwr_dir; | |
| 76 | ||
| 19d337df JB |
77 | rfk = rfkill_alloc("tosa-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH, |
| 78 | &tosa_bt_rfkill_ops, data); | |
| 16b32fd0 DB |
79 | if (!rfk) { |
| 80 | rc = -ENOMEM; | |
| 81 | goto err_rfk_alloc; | |
| 82 | } | |
| 83 | ||
| 19d337df | 84 | rfkill_set_led_trigger_name(rfk, "tosa-bt"); |
| 16b32fd0 DB |
85 | |
| 86 | rc = rfkill_register(rfk); | |
| 87 | if (rc) | |
| 88 | goto err_rfkill; | |
| 89 | ||
| 90 | platform_set_drvdata(dev, rfk); | |
| 91 | ||
| 92 | return 0; | |
| 93 | ||
| 94 | err_rfkill: | |
| 19d337df | 95 | rfkill_destroy(rfk); |
| 16b32fd0 DB |
96 | err_rfk_alloc: |
| 97 | tosa_bt_off(data); | |
| 98 | err_pwr_dir: | |
| 99 | gpio_free(data->gpio_pwr); | |
| 100 | err_pwr: | |
| 101 | err_reset_dir: | |
| 102 | gpio_free(data->gpio_reset); | |
| 103 | err_reset: | |
| 104 | return rc; | |
| 105 | } | |
| 106 | ||
| 107 | static int __devexit tosa_bt_remove(struct platform_device *dev) | |
| 108 | { | |
| 109 | struct tosa_bt_data *data = dev->dev.platform_data; | |
| 110 | struct rfkill *rfk = platform_get_drvdata(dev); | |
| 111 | ||
| 112 | platform_set_drvdata(dev, NULL); | |
| 113 | ||
| 19d337df | 114 | if (rfk) { |
| 16b32fd0 | 115 | rfkill_unregister(rfk); |
| 19d337df JB |
116 | rfkill_destroy(rfk); |
| 117 | } | |
| 16b32fd0 DB |
118 | rfk = NULL; |
| 119 | ||
| 120 | tosa_bt_off(data); | |
| 121 | ||
| 122 | gpio_free(data->gpio_pwr); | |
| 123 | gpio_free(data->gpio_reset); | |
| 124 | ||
| 125 | return 0; | |
| 126 | } | |
| 127 | ||
| 128 | static struct platform_driver tosa_bt_driver = { | |
| 129 | .probe = tosa_bt_probe, | |
| 130 | .remove = __devexit_p(tosa_bt_remove), | |
| 131 | ||
| 132 | .driver = { | |
| 133 | .name = "tosa-bt", | |
| 134 | .owner = THIS_MODULE, | |
| 135 | }, | |
| 136 | }; | |
| 137 | ||
| 138 | ||
| 139 | static int __init tosa_bt_init(void) | |
| 140 | { | |
| 141 | return platform_driver_register(&tosa_bt_driver); | |
| 142 | } | |
| 143 | ||
| 144 | static void __exit tosa_bt_exit(void) | |
| 145 | { | |
| 146 | platform_driver_unregister(&tosa_bt_driver); | |
| 147 | } | |
| 148 | ||
| 149 | module_init(tosa_bt_init); | |
| 150 | module_exit(tosa_bt_exit); |