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1/*2 * Base driver for Marvell 88PM8053 *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 General10 * Public License. See the file "COPYING" in the main directory of this11 * 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 of15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the16 * GNU General Public License for more details.17 *18 * You should have received a copy of the GNU General Public License19 * along with this program; if not, write to the Free Software20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA21 */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 32static const struct i2c_device_id pm80x_id_table[] = {33 { "88PM805" },34 {} /* NULL terminated */35};36MODULE_DEVICE_TABLE(i2c, pm80x_id_table);37 38/* Interrupt Number in 88PM805 */39enum {40 PM805_IRQ_LDO_OFF, /*0 */41 PM805_IRQ_SRC_DPLL_LOCK, /*1 */42 PM805_IRQ_CLIP_FAULT,43 PM805_IRQ_MIC_CONFLICT,44 PM805_IRQ_HP2_SHRT,45 PM805_IRQ_HP1_SHRT, /*5 */46 PM805_IRQ_FINE_PLL_FAULT,47 PM805_IRQ_RAW_PLL_FAULT,48 PM805_IRQ_VOLP_BTN_DET,49 PM805_IRQ_VOLM_BTN_DET,50 PM805_IRQ_SHRT_BTN_DET, /*10 */51 PM805_IRQ_MIC_DET, /*11 */52 53 PM805_MAX_IRQ,54};55 56static struct resource codec_resources[] = {57 /* Headset microphone insertion or removal */58 DEFINE_RES_IRQ_NAMED(PM805_IRQ_MIC_DET, "micin"),59 60 /* Audio short HP1 */61 DEFINE_RES_IRQ_NAMED(PM805_IRQ_HP1_SHRT, "audio-short1"),62 63 /* Audio short HP2 */64 DEFINE_RES_IRQ_NAMED(PM805_IRQ_HP2_SHRT, "audio-short2"),65};66 67static const struct mfd_cell codec_devs[] = {68 {69 .name = "88pm80x-codec",70 .num_resources = ARRAY_SIZE(codec_resources),71 .resources = &codec_resources[0],72 .id = -1,73 },74};75 76static const struct regmap_irq pm805_irqs[] = {77 /* INT0 */78 [PM805_IRQ_LDO_OFF] = {79 .mask = PM805_INT1_HP1_SHRT,80 },81 [PM805_IRQ_SRC_DPLL_LOCK] = {82 .mask = PM805_INT1_HP2_SHRT,83 },84 [PM805_IRQ_CLIP_FAULT] = {85 .mask = PM805_INT1_MIC_CONFLICT,86 },87 [PM805_IRQ_MIC_CONFLICT] = {88 .mask = PM805_INT1_CLIP_FAULT,89 },90 [PM805_IRQ_HP2_SHRT] = {91 .mask = PM805_INT1_LDO_OFF,92 },93 [PM805_IRQ_HP1_SHRT] = {94 .mask = PM805_INT1_SRC_DPLL_LOCK,95 },96 /* INT1 */97 [PM805_IRQ_FINE_PLL_FAULT] = {98 .reg_offset = 1,99 .mask = PM805_INT2_MIC_DET,100 },101 [PM805_IRQ_RAW_PLL_FAULT] = {102 .reg_offset = 1,103 .mask = PM805_INT2_SHRT_BTN_DET,104 },105 [PM805_IRQ_VOLP_BTN_DET] = {106 .reg_offset = 1,107 .mask = PM805_INT2_VOLM_BTN_DET,108 },109 [PM805_IRQ_VOLM_BTN_DET] = {110 .reg_offset = 1,111 .mask = PM805_INT2_VOLP_BTN_DET,112 },113 [PM805_IRQ_SHRT_BTN_DET] = {114 .reg_offset = 1,115 .mask = PM805_INT2_RAW_PLL_FAULT,116 },117 [PM805_IRQ_MIC_DET] = {118 .reg_offset = 1,119 .mask = PM805_INT2_FINE_PLL_FAULT,120 },121};122 123static int device_irq_init_805(struct pm80x_chip *chip)124{125 struct regmap *map = chip->regmap;126 unsigned long flags = IRQF_ONESHOT;127 int data, mask, ret = -EINVAL;128 129 if (!map || !chip->irq) {130 dev_err(chip->dev, "incorrect parameters\n");131 return -EINVAL;132 }133 134 /*135 * irq_mode defines the way of clearing interrupt. it's read-clear by136 * default.137 */138 mask =139 PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT |140 PM800_STATUS0_INT_MASK;141 142 data = PM805_STATUS0_INT_CLEAR;143 ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);144 /*145 * PM805_INT_STATUS is under 32K clock domain, so need to146 * add proper delay before the next I2C register access.147 */148 usleep_range(1000, 3000);149 150 if (ret < 0)151 goto out;152 153 ret =154 regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,155 chip->regmap_irq_chip, &chip->irq_data);156 157out:158 return ret;159}160 161static void device_irq_exit_805(struct pm80x_chip *chip)162{163 regmap_del_irq_chip(chip->irq, chip->irq_data);164}165 166static const struct regmap_irq_chip pm805_irq_chip = {167 .name = "88pm805",168 .irqs = pm805_irqs,169 .num_irqs = ARRAY_SIZE(pm805_irqs),170 171 .num_regs = 2,172 .status_base = PM805_INT_STATUS1,173 .mask_base = PM805_INT_MASK1,174 .ack_base = PM805_INT_STATUS1,175};176 177static int device_805_init(struct pm80x_chip *chip)178{179 int ret = 0;180 struct regmap *map = chip->regmap;181 182 if (!map) {183 dev_err(chip->dev, "regmap is invalid\n");184 return -EINVAL;185 }186 187 chip->regmap_irq_chip = &pm805_irq_chip;188 189 ret = device_irq_init_805(chip);190 if (ret < 0) {191 dev_err(chip->dev, "Failed to init pm805 irq!\n");192 goto out_irq_init;193 }194 195 ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],196 ARRAY_SIZE(codec_devs), &codec_resources[0], 0,197 NULL);198 if (ret < 0) {199 dev_err(chip->dev, "Failed to add codec subdev\n");200 goto out_codec;201 } else202 dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);203 204 return 0;205 206out_codec:207 device_irq_exit_805(chip);208out_irq_init:209 return ret;210}211 212static int pm805_probe(struct i2c_client *client)213{214 int ret = 0;215 struct pm80x_chip *chip;216 struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);217 218 ret = pm80x_init(client);219 if (ret) {220 dev_err(&client->dev, "pm805_init fail!\n");221 goto out_init;222 }223 224 chip = i2c_get_clientdata(client);225 226 ret = device_805_init(chip);227 if (ret) {228 dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");229 goto err_805_init;230 }231 232 if (pdata && pdata->plat_config)233 pdata->plat_config(chip, pdata);234 235err_805_init:236 pm80x_deinit();237out_init:238 return ret;239}240 241static void pm805_remove(struct i2c_client *client)242{243 struct pm80x_chip *chip = i2c_get_clientdata(client);244 245 mfd_remove_devices(chip->dev);246 device_irq_exit_805(chip);247 248 pm80x_deinit();249}250 251static struct i2c_driver pm805_driver = {252 .driver = {253 .name = "88PM805",254 .pm = pm_sleep_ptr(&pm80x_pm_ops),255 },256 .probe = pm805_probe,257 .remove = pm805_remove,258 .id_table = pm80x_id_table,259};260 261static int __init pm805_i2c_init(void)262{263 return i2c_add_driver(&pm805_driver);264}265subsys_initcall(pm805_i2c_init);266 267static void __exit pm805_i2c_exit(void)268{269 i2c_del_driver(&pm805_driver);270}271module_exit(pm805_i2c_exit);272 273MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");274MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");275MODULE_LICENSE("GPL");276