Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Base driver for Marvell 88PM805 |
| 3 | * |
| 4 | * Copyright (C) 2012 Marvell International Ltd. |
| 5 | * Haojian Zhuang <haojian.zhuang@marvell.com> |
| 6 | * Joseph(Yossi) Hanin <yhanin@marvell.com> |
| 7 | * Qiao Zhou <zhouqiao@marvell.com> |
| 8 | * |
| 9 | * This file is subject to the terms and conditions of the GNU General |
| 10 | * Public License. See the file "COPYING" in the main directory of this |
| 11 | * archive for more details. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/i2c.h> |
| 26 | #include <linux/irq.h> |
| 27 | #include <linux/mfd/core.h> |
| 28 | #include <linux/mfd/88pm80x.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/delay.h> |
| 31 | |
| 32 | #define PM805_CHIP_ID (0x00) |
| 33 | |
| 34 | static const struct i2c_device_id pm80x_id_table[] = { |
| 35 | {"88PM805", CHIP_PM805}, |
Samuel Ortiz | 31b3ffb | 2012-07-09 15:11:46 +0200 | [diff] [blame] | 36 | {} /* NULL terminated */ |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 37 | }; |
| 38 | MODULE_DEVICE_TABLE(i2c, pm80x_id_table); |
| 39 | |
| 40 | /* Interrupt Number in 88PM805 */ |
| 41 | enum { |
| 42 | PM805_IRQ_LDO_OFF, /*0 */ |
| 43 | PM805_IRQ_SRC_DPLL_LOCK, /*1 */ |
| 44 | PM805_IRQ_CLIP_FAULT, |
| 45 | PM805_IRQ_MIC_CONFLICT, |
| 46 | PM805_IRQ_HP2_SHRT, |
| 47 | PM805_IRQ_HP1_SHRT, /*5 */ |
| 48 | PM805_IRQ_FINE_PLL_FAULT, |
| 49 | PM805_IRQ_RAW_PLL_FAULT, |
| 50 | PM805_IRQ_VOLP_BTN_DET, |
| 51 | PM805_IRQ_VOLM_BTN_DET, |
| 52 | PM805_IRQ_SHRT_BTN_DET, /*10 */ |
| 53 | PM805_IRQ_MIC_DET, /*11 */ |
| 54 | |
| 55 | PM805_MAX_IRQ, |
| 56 | }; |
| 57 | |
| 58 | static struct resource codec_resources[] = { |
| 59 | { |
| 60 | /* Headset microphone insertion or removal */ |
| 61 | .name = "micin", |
| 62 | .start = PM805_IRQ_MIC_DET, |
| 63 | .end = PM805_IRQ_MIC_DET, |
| 64 | .flags = IORESOURCE_IRQ, |
| 65 | }, |
| 66 | { |
| 67 | /* Audio short HP1 */ |
| 68 | .name = "audio-short1", |
| 69 | .start = PM805_IRQ_HP1_SHRT, |
| 70 | .end = PM805_IRQ_HP1_SHRT, |
| 71 | .flags = IORESOURCE_IRQ, |
| 72 | }, |
| 73 | { |
| 74 | /* Audio short HP2 */ |
| 75 | .name = "audio-short2", |
| 76 | .start = PM805_IRQ_HP2_SHRT, |
| 77 | .end = PM805_IRQ_HP2_SHRT, |
| 78 | .flags = IORESOURCE_IRQ, |
| 79 | }, |
| 80 | }; |
| 81 | |
| 82 | static struct mfd_cell codec_devs[] = { |
| 83 | { |
| 84 | .name = "88pm80x-codec", |
| 85 | .num_resources = ARRAY_SIZE(codec_resources), |
| 86 | .resources = &codec_resources[0], |
| 87 | .id = -1, |
| 88 | }, |
| 89 | }; |
| 90 | |
| 91 | static struct regmap_irq pm805_irqs[] = { |
| 92 | /* INT0 */ |
| 93 | [PM805_IRQ_LDO_OFF] = { |
| 94 | .mask = PM805_INT1_HP1_SHRT, |
| 95 | }, |
| 96 | [PM805_IRQ_SRC_DPLL_LOCK] = { |
| 97 | .mask = PM805_INT1_HP2_SHRT, |
| 98 | }, |
| 99 | [PM805_IRQ_CLIP_FAULT] = { |
| 100 | .mask = PM805_INT1_MIC_CONFLICT, |
| 101 | }, |
| 102 | [PM805_IRQ_MIC_CONFLICT] = { |
| 103 | .mask = PM805_INT1_CLIP_FAULT, |
| 104 | }, |
| 105 | [PM805_IRQ_HP2_SHRT] = { |
| 106 | .mask = PM805_INT1_LDO_OFF, |
| 107 | }, |
| 108 | [PM805_IRQ_HP1_SHRT] = { |
| 109 | .mask = PM805_INT1_SRC_DPLL_LOCK, |
| 110 | }, |
| 111 | /* INT1 */ |
| 112 | [PM805_IRQ_FINE_PLL_FAULT] = { |
| 113 | .reg_offset = 1, |
| 114 | .mask = PM805_INT2_MIC_DET, |
| 115 | }, |
| 116 | [PM805_IRQ_RAW_PLL_FAULT] = { |
| 117 | .reg_offset = 1, |
| 118 | .mask = PM805_INT2_SHRT_BTN_DET, |
| 119 | }, |
| 120 | [PM805_IRQ_VOLP_BTN_DET] = { |
| 121 | .reg_offset = 1, |
| 122 | .mask = PM805_INT2_VOLM_BTN_DET, |
| 123 | }, |
| 124 | [PM805_IRQ_VOLM_BTN_DET] = { |
| 125 | .reg_offset = 1, |
| 126 | .mask = PM805_INT2_VOLP_BTN_DET, |
| 127 | }, |
| 128 | [PM805_IRQ_SHRT_BTN_DET] = { |
| 129 | .reg_offset = 1, |
| 130 | .mask = PM805_INT2_RAW_PLL_FAULT, |
| 131 | }, |
| 132 | [PM805_IRQ_MIC_DET] = { |
| 133 | .reg_offset = 1, |
| 134 | .mask = PM805_INT2_FINE_PLL_FAULT, |
| 135 | }, |
| 136 | }; |
| 137 | |
Bill Pemberton | f791be4 | 2012-11-19 13:23:04 -0500 | [diff] [blame] | 138 | static int device_irq_init_805(struct pm80x_chip *chip) |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 139 | { |
| 140 | struct regmap *map = chip->regmap; |
Yi Zhang | 1ef5677 | 2013-06-14 01:21:48 -0400 | [diff] [blame^] | 141 | unsigned long flags = IRQF_ONESHOT; |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 142 | int data, mask, ret = -EINVAL; |
| 143 | |
| 144 | if (!map || !chip->irq) { |
| 145 | dev_err(chip->dev, "incorrect parameters\n"); |
| 146 | return -EINVAL; |
| 147 | } |
| 148 | |
| 149 | /* |
| 150 | * irq_mode defines the way of clearing interrupt. it's read-clear by |
| 151 | * default. |
| 152 | */ |
| 153 | mask = |
| 154 | PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT | |
| 155 | PM800_STATUS0_INT_MASK; |
| 156 | |
| 157 | data = PM805_STATUS0_INT_CLEAR; |
| 158 | ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data); |
| 159 | /* |
| 160 | * PM805_INT_STATUS is under 32K clock domain, so need to |
| 161 | * add proper delay before the next I2C register access. |
| 162 | */ |
| 163 | msleep(1); |
| 164 | |
| 165 | if (ret < 0) |
| 166 | goto out; |
| 167 | |
| 168 | ret = |
| 169 | regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1, |
| 170 | chip->regmap_irq_chip, &chip->irq_data); |
| 171 | |
| 172 | out: |
| 173 | return ret; |
| 174 | } |
| 175 | |
| 176 | static void device_irq_exit_805(struct pm80x_chip *chip) |
| 177 | { |
| 178 | regmap_del_irq_chip(chip->irq, chip->irq_data); |
| 179 | } |
| 180 | |
| 181 | static struct regmap_irq_chip pm805_irq_chip = { |
| 182 | .name = "88pm805", |
| 183 | .irqs = pm805_irqs, |
| 184 | .num_irqs = ARRAY_SIZE(pm805_irqs), |
| 185 | |
| 186 | .num_regs = 2, |
| 187 | .status_base = PM805_INT_STATUS1, |
| 188 | .mask_base = PM805_INT_MASK1, |
| 189 | .ack_base = PM805_INT_STATUS1, |
| 190 | }; |
| 191 | |
Bill Pemberton | f791be4 | 2012-11-19 13:23:04 -0500 | [diff] [blame] | 192 | static int device_805_init(struct pm80x_chip *chip) |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 193 | { |
| 194 | int ret = 0; |
Axel Lin | 46b65a8 | 2012-07-11 09:27:54 +0800 | [diff] [blame] | 195 | unsigned int val; |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 196 | struct regmap *map = chip->regmap; |
| 197 | |
| 198 | if (!map) { |
| 199 | dev_err(chip->dev, "regmap is invalid\n"); |
| 200 | return -EINVAL; |
| 201 | } |
| 202 | |
Axel Lin | 46b65a8 | 2012-07-11 09:27:54 +0800 | [diff] [blame] | 203 | ret = regmap_read(map, PM805_CHIP_ID, &val); |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 204 | if (ret < 0) { |
| 205 | dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret); |
| 206 | goto out_irq_init; |
| 207 | } |
Axel Lin | 46b65a8 | 2012-07-11 09:27:54 +0800 | [diff] [blame] | 208 | chip->version = val; |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 209 | |
| 210 | chip->regmap_irq_chip = &pm805_irq_chip; |
| 211 | |
| 212 | ret = device_irq_init_805(chip); |
| 213 | if (ret < 0) { |
| 214 | dev_err(chip->dev, "Failed to init pm805 irq!\n"); |
| 215 | goto out_irq_init; |
| 216 | } |
| 217 | |
| 218 | ret = mfd_add_devices(chip->dev, 0, &codec_devs[0], |
Mark Brown | 0848c94 | 2012-09-11 15:16:36 +0800 | [diff] [blame] | 219 | ARRAY_SIZE(codec_devs), &codec_resources[0], 0, |
| 220 | NULL); |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 221 | if (ret < 0) { |
| 222 | dev_err(chip->dev, "Failed to add codec subdev\n"); |
| 223 | goto out_codec; |
| 224 | } else |
| 225 | dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__); |
| 226 | |
| 227 | return 0; |
| 228 | |
| 229 | out_codec: |
| 230 | device_irq_exit_805(chip); |
| 231 | out_irq_init: |
| 232 | return ret; |
| 233 | } |
| 234 | |
Bill Pemberton | f791be4 | 2012-11-19 13:23:04 -0500 | [diff] [blame] | 235 | static int pm805_probe(struct i2c_client *client, |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 236 | const struct i2c_device_id *id) |
| 237 | { |
| 238 | int ret = 0; |
| 239 | struct pm80x_chip *chip; |
| 240 | struct pm80x_platform_data *pdata = client->dev.platform_data; |
| 241 | |
| 242 | ret = pm80x_init(client, id); |
| 243 | if (ret) { |
| 244 | dev_err(&client->dev, "pm805_init fail!\n"); |
| 245 | goto out_init; |
| 246 | } |
| 247 | |
| 248 | chip = i2c_get_clientdata(client); |
| 249 | |
| 250 | ret = device_805_init(chip); |
| 251 | if (ret) { |
| 252 | dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id); |
| 253 | goto err_805_init; |
| 254 | } |
| 255 | |
| 256 | if (pdata->plat_config) |
| 257 | pdata->plat_config(chip, pdata); |
| 258 | |
| 259 | err_805_init: |
Yi Zhang | 306df79 | 2013-01-22 10:43:45 +0800 | [diff] [blame] | 260 | pm80x_deinit(); |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 261 | out_init: |
| 262 | return ret; |
| 263 | } |
| 264 | |
Bill Pemberton | 4740f73 | 2012-11-19 13:26:01 -0500 | [diff] [blame] | 265 | static int pm805_remove(struct i2c_client *client) |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 266 | { |
| 267 | struct pm80x_chip *chip = i2c_get_clientdata(client); |
| 268 | |
| 269 | mfd_remove_devices(chip->dev); |
| 270 | device_irq_exit_805(chip); |
| 271 | |
Yi Zhang | 306df79 | 2013-01-22 10:43:45 +0800 | [diff] [blame] | 272 | pm80x_deinit(); |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 273 | |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | static struct i2c_driver pm805_driver = { |
| 278 | .driver = { |
Chao Xie | 46223a1 | 2013-06-14 01:21:46 -0400 | [diff] [blame] | 279 | .name = "88PM805", |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 280 | .owner = THIS_MODULE, |
| 281 | .pm = &pm80x_pm_ops, |
| 282 | }, |
| 283 | .probe = pm805_probe, |
Bill Pemberton | 8444921 | 2012-11-19 13:20:24 -0500 | [diff] [blame] | 284 | .remove = pm805_remove, |
Qiao Zhou | 70c6cce | 2012-07-09 14:37:32 +0800 | [diff] [blame] | 285 | .id_table = pm80x_id_table, |
| 286 | }; |
| 287 | |
| 288 | static int __init pm805_i2c_init(void) |
| 289 | { |
| 290 | return i2c_add_driver(&pm805_driver); |
| 291 | } |
| 292 | subsys_initcall(pm805_i2c_init); |
| 293 | |
| 294 | static void __exit pm805_i2c_exit(void) |
| 295 | { |
| 296 | i2c_del_driver(&pm805_driver); |
| 297 | } |
| 298 | module_exit(pm805_i2c_exit); |
| 299 | |
| 300 | MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805"); |
| 301 | MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>"); |
| 302 | MODULE_LICENSE("GPL"); |