2 * Base driver for Marvell 88PM805
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>
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.
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.
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
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>
32 #define PM805_CHIP_ID (0x00)
34 static const struct i2c_device_id pm80x_id_table[] = {
35 {"88PM805", CHIP_PM805},
36 {} /* NULL terminated */
38 MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
40 /* Interrupt Number in 88PM805 */
42 PM805_IRQ_LDO_OFF, /*0 */
43 PM805_IRQ_SRC_DPLL_LOCK, /*1 */
45 PM805_IRQ_MIC_CONFLICT,
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 */
58 static struct resource codec_resources[] = {
60 /* Headset microphone insertion or removal */
62 .start = PM805_IRQ_MIC_DET,
63 .end = PM805_IRQ_MIC_DET,
64 .flags = IORESOURCE_IRQ,
68 .name = "audio-short1",
69 .start = PM805_IRQ_HP1_SHRT,
70 .end = PM805_IRQ_HP1_SHRT,
71 .flags = IORESOURCE_IRQ,
75 .name = "audio-short2",
76 .start = PM805_IRQ_HP2_SHRT,
77 .end = PM805_IRQ_HP2_SHRT,
78 .flags = IORESOURCE_IRQ,
82 static struct mfd_cell codec_devs[] = {
84 .name = "88pm80x-codec",
85 .num_resources = ARRAY_SIZE(codec_resources),
86 .resources = &codec_resources[0],
91 static struct regmap_irq pm805_irqs[] = {
93 [PM805_IRQ_LDO_OFF] = {
94 .mask = PM805_INT1_HP1_SHRT,
96 [PM805_IRQ_SRC_DPLL_LOCK] = {
97 .mask = PM805_INT1_HP2_SHRT,
99 [PM805_IRQ_CLIP_FAULT] = {
100 .mask = PM805_INT1_MIC_CONFLICT,
102 [PM805_IRQ_MIC_CONFLICT] = {
103 .mask = PM805_INT1_CLIP_FAULT,
105 [PM805_IRQ_HP2_SHRT] = {
106 .mask = PM805_INT1_LDO_OFF,
108 [PM805_IRQ_HP1_SHRT] = {
109 .mask = PM805_INT1_SRC_DPLL_LOCK,
112 [PM805_IRQ_FINE_PLL_FAULT] = {
114 .mask = PM805_INT2_MIC_DET,
116 [PM805_IRQ_RAW_PLL_FAULT] = {
118 .mask = PM805_INT2_SHRT_BTN_DET,
120 [PM805_IRQ_VOLP_BTN_DET] = {
122 .mask = PM805_INT2_VOLM_BTN_DET,
124 [PM805_IRQ_VOLM_BTN_DET] = {
126 .mask = PM805_INT2_VOLP_BTN_DET,
128 [PM805_IRQ_SHRT_BTN_DET] = {
130 .mask = PM805_INT2_RAW_PLL_FAULT,
132 [PM805_IRQ_MIC_DET] = {
134 .mask = PM805_INT2_FINE_PLL_FAULT,
138 static int __devinit device_irq_init_805(struct pm80x_chip *chip)
140 struct regmap *map = chip->regmap;
141 unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
142 int data, mask, ret = -EINVAL;
144 if (!map || !chip->irq) {
145 dev_err(chip->dev, "incorrect parameters\n");
150 * irq_mode defines the way of clearing interrupt. it's read-clear by
154 PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT |
155 PM800_STATUS0_INT_MASK;
157 data = PM805_STATUS0_INT_CLEAR;
158 ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);
160 * PM805_INT_STATUS is under 32K clock domain, so need to
161 * add proper delay before the next I2C register access.
169 regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
170 chip->regmap_irq_chip, &chip->irq_data);
176 static void device_irq_exit_805(struct pm80x_chip *chip)
178 regmap_del_irq_chip(chip->irq, chip->irq_data);
181 static struct regmap_irq_chip pm805_irq_chip = {
184 .num_irqs = ARRAY_SIZE(pm805_irqs),
187 .status_base = PM805_INT_STATUS1,
188 .mask_base = PM805_INT_MASK1,
189 .ack_base = PM805_INT_STATUS1,
192 static int __devinit device_805_init(struct pm80x_chip *chip)
196 struct regmap *map = chip->regmap;
199 dev_err(chip->dev, "regmap is invalid\n");
203 ret = regmap_read(map, PM805_CHIP_ID, &val);
205 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
210 chip->regmap_irq_chip = &pm805_irq_chip;
212 ret = device_irq_init_805(chip);
214 dev_err(chip->dev, "Failed to init pm805 irq!\n");
218 ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
219 ARRAY_SIZE(codec_devs), &codec_resources[0], 0);
221 dev_err(chip->dev, "Failed to add codec subdev\n");
224 dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);
229 device_irq_exit_805(chip);
234 static int __devinit pm805_probe(struct i2c_client *client,
235 const struct i2c_device_id *id)
238 struct pm80x_chip *chip;
239 struct pm80x_platform_data *pdata = client->dev.platform_data;
241 ret = pm80x_init(client, id);
243 dev_err(&client->dev, "pm805_init fail!\n");
247 chip = i2c_get_clientdata(client);
249 ret = device_805_init(chip);
251 dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id);
255 if (pdata->plat_config)
256 pdata->plat_config(chip, pdata);
259 pm80x_deinit(client);
264 static int __devexit pm805_remove(struct i2c_client *client)
266 struct pm80x_chip *chip = i2c_get_clientdata(client);
268 mfd_remove_devices(chip->dev);
269 device_irq_exit_805(chip);
271 pm80x_deinit(client);
276 static struct i2c_driver pm805_driver = {
279 .owner = THIS_MODULE,
282 .probe = pm805_probe,
283 .remove = __devexit_p(pm805_remove),
284 .id_table = pm80x_id_table,
287 static int __init pm805_i2c_init(void)
289 return i2c_add_driver(&pm805_driver);
291 subsys_initcall(pm805_i2c_init);
293 static void __exit pm805_i2c_exit(void)
295 i2c_del_driver(&pm805_driver);
297 module_exit(pm805_i2c_exit);
299 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
300 MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
301 MODULE_LICENSE("GPL");