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70c6cce0 QZ |
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}, | |
31b3ffbd | 36 | {} /* NULL terminated */ |
70c6cce0 QZ |
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 | ||
f791be49 | 138 | static int device_irq_init_805(struct pm80x_chip *chip) |
70c6cce0 QZ |
139 | { |
140 | struct regmap *map = chip->regmap; | |
141 | unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT; | |
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 | ||
f791be49 | 192 | static int device_805_init(struct pm80x_chip *chip) |
70c6cce0 QZ |
193 | { |
194 | int ret = 0; | |
46b65a8f | 195 | unsigned int val; |
70c6cce0 QZ |
196 | struct regmap *map = chip->regmap; |
197 | ||
198 | if (!map) { | |
199 | dev_err(chip->dev, "regmap is invalid\n"); | |
200 | return -EINVAL; | |
201 | } | |
202 | ||
46b65a8f | 203 | ret = regmap_read(map, PM805_CHIP_ID, &val); |
70c6cce0 QZ |
204 | if (ret < 0) { |
205 | dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret); | |
206 | goto out_irq_init; | |
207 | } | |
46b65a8f | 208 | chip->version = val; |
70c6cce0 QZ |
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], | |
0848c94f MB |
219 | ARRAY_SIZE(codec_devs), &codec_resources[0], 0, |
220 | NULL); | |
70c6cce0 QZ |
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 | ||
f791be49 | 235 | static int pm805_probe(struct i2c_client *client, |
70c6cce0 QZ |
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: | |
260 | pm80x_deinit(client); | |
261 | out_init: | |
262 | return ret; | |
263 | } | |
264 | ||
4740f73f | 265 | static int pm805_remove(struct i2c_client *client) |
70c6cce0 QZ |
266 | { |
267 | struct pm80x_chip *chip = i2c_get_clientdata(client); | |
268 | ||
269 | mfd_remove_devices(chip->dev); | |
270 | device_irq_exit_805(chip); | |
271 | ||
272 | pm80x_deinit(client); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static struct i2c_driver pm805_driver = { | |
278 | .driver = { | |
279 | .name = "88PM80X", | |
280 | .owner = THIS_MODULE, | |
281 | .pm = &pm80x_pm_ops, | |
282 | }, | |
283 | .probe = pm805_probe, | |
84449216 | 284 | .remove = pm805_remove, |
70c6cce0 QZ |
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"); |