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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
32static const struct i2c_device_id pm80x_id_table[] = {
33 {"88PM805", 0},
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 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 by
136 * 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 to
146 * 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 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 } else
202 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 const struct i2c_device_id *id)
214{
215 int ret = 0;
216 struct pm80x_chip *chip;
217 struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
218
219 ret = pm80x_init(client);
220 if (ret) {
221 dev_err(&client->dev, "pm805_init fail!\n");
222 goto out_init;
223 }
224
225 chip = i2c_get_clientdata(client);
226
227 ret = device_805_init(chip);
228 if (ret) {
229 dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
230 goto err_805_init;
231 }
232
233 if (pdata && pdata->plat_config)
234 pdata->plat_config(chip, pdata);
235
236err_805_init:
237 pm80x_deinit();
238out_init:
239 return ret;
240}
241
242static int pm805_remove(struct i2c_client *client)
243{
244 struct pm80x_chip *chip = i2c_get_clientdata(client);
245
246 mfd_remove_devices(chip->dev);
247 device_irq_exit_805(chip);
248
249 pm80x_deinit();
250
251 return 0;
252}
253
254static struct i2c_driver pm805_driver = {
255 .driver = {
256 .name = "88PM805",
257 .pm = &pm80x_pm_ops,
258 },
259 .probe = pm805_probe,
260 .remove = pm805_remove,
261 .id_table = pm80x_id_table,
262};
263
264static int __init pm805_i2c_init(void)
265{
266 return i2c_add_driver(&pm805_driver);
267}
268subsys_initcall(pm805_i2c_init);
269
270static void __exit pm805_i2c_exit(void)
271{
272 i2c_del_driver(&pm805_driver);
273}
274module_exit(pm805_i2c_exit);
275
276MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
277MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
278MODULE_LICENSE("GPL");