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 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 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,
222 dev_err(chip
->dev
, "Failed to add codec subdev\n");
225 dev_info(chip
->dev
, "[%s]:Added mfd codec_devs\n", __func__
);
230 device_irq_exit_805(chip
);
235 static int pm805_probe(struct i2c_client
*client
,
236 const struct i2c_device_id
*id
)
239 struct pm80x_chip
*chip
;
240 struct pm80x_platform_data
*pdata
= client
->dev
.platform_data
;
242 ret
= pm80x_init(client
, id
);
244 dev_err(&client
->dev
, "pm805_init fail!\n");
248 chip
= i2c_get_clientdata(client
);
250 ret
= device_805_init(chip
);
252 dev_err(chip
->dev
, "%s id 0x%x failed!\n", __func__
, chip
->id
);
256 if (pdata
->plat_config
)
257 pdata
->plat_config(chip
, pdata
);
265 static int pm805_remove(struct i2c_client
*client
)
267 struct pm80x_chip
*chip
= i2c_get_clientdata(client
);
269 mfd_remove_devices(chip
->dev
);
270 device_irq_exit_805(chip
);
277 static struct i2c_driver pm805_driver
= {
280 .owner
= THIS_MODULE
,
283 .probe
= pm805_probe
,
284 .remove
= pm805_remove
,
285 .id_table
= pm80x_id_table
,
288 static int __init
pm805_i2c_init(void)
290 return i2c_add_driver(&pm805_driver
);
292 subsys_initcall(pm805_i2c_init
);
294 static void __exit
pm805_i2c_exit(void)
296 i2c_del_driver(&pm805_driver
);
298 module_exit(pm805_i2c_exit
);
300 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
301 MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
302 MODULE_LICENSE("GPL");