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278 lines
6.2 KiB
278 lines
6.2 KiB
/* |
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* Base driver for Marvell 88PM805 |
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* |
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* Copyright (C) 2012 Marvell International Ltd. |
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* Haojian Zhuang <[email protected]> |
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* Joseph(Yossi) Hanin <[email protected]> |
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* Qiao Zhou <[email protected]> |
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* |
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* This file is subject to the terms and conditions of the GNU General |
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* Public License. See the file "COPYING" in the main directory of this |
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* archive for more details. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/i2c.h> |
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#include <linux/irq.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/88pm80x.h> |
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#include <linux/slab.h> |
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#include <linux/delay.h> |
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static const struct i2c_device_id pm80x_id_table[] = { |
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{"88PM805", 0}, |
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{} /* NULL terminated */ |
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}; |
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MODULE_DEVICE_TABLE(i2c, pm80x_id_table); |
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/* Interrupt Number in 88PM805 */ |
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enum { |
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PM805_IRQ_LDO_OFF, /*0 */ |
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PM805_IRQ_SRC_DPLL_LOCK, /*1 */ |
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PM805_IRQ_CLIP_FAULT, |
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PM805_IRQ_MIC_CONFLICT, |
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PM805_IRQ_HP2_SHRT, |
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PM805_IRQ_HP1_SHRT, /*5 */ |
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PM805_IRQ_FINE_PLL_FAULT, |
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PM805_IRQ_RAW_PLL_FAULT, |
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PM805_IRQ_VOLP_BTN_DET, |
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PM805_IRQ_VOLM_BTN_DET, |
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PM805_IRQ_SHRT_BTN_DET, /*10 */ |
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PM805_IRQ_MIC_DET, /*11 */ |
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PM805_MAX_IRQ, |
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}; |
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static struct resource codec_resources[] = { |
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/* Headset microphone insertion or removal */ |
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DEFINE_RES_IRQ_NAMED(PM805_IRQ_MIC_DET, "micin"), |
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/* Audio short HP1 */ |
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DEFINE_RES_IRQ_NAMED(PM805_IRQ_HP1_SHRT, "audio-short1"), |
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/* Audio short HP2 */ |
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DEFINE_RES_IRQ_NAMED(PM805_IRQ_HP2_SHRT, "audio-short2"), |
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}; |
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static const struct mfd_cell codec_devs[] = { |
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{ |
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.name = "88pm80x-codec", |
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.num_resources = ARRAY_SIZE(codec_resources), |
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.resources = &codec_resources[0], |
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.id = -1, |
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}, |
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}; |
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static struct regmap_irq pm805_irqs[] = { |
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/* INT0 */ |
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[PM805_IRQ_LDO_OFF] = { |
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.mask = PM805_INT1_HP1_SHRT, |
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}, |
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[PM805_IRQ_SRC_DPLL_LOCK] = { |
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.mask = PM805_INT1_HP2_SHRT, |
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}, |
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[PM805_IRQ_CLIP_FAULT] = { |
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.mask = PM805_INT1_MIC_CONFLICT, |
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}, |
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[PM805_IRQ_MIC_CONFLICT] = { |
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.mask = PM805_INT1_CLIP_FAULT, |
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}, |
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[PM805_IRQ_HP2_SHRT] = { |
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.mask = PM805_INT1_LDO_OFF, |
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}, |
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[PM805_IRQ_HP1_SHRT] = { |
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.mask = PM805_INT1_SRC_DPLL_LOCK, |
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}, |
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/* INT1 */ |
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[PM805_IRQ_FINE_PLL_FAULT] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_MIC_DET, |
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}, |
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[PM805_IRQ_RAW_PLL_FAULT] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_SHRT_BTN_DET, |
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}, |
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[PM805_IRQ_VOLP_BTN_DET] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_VOLM_BTN_DET, |
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}, |
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[PM805_IRQ_VOLM_BTN_DET] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_VOLP_BTN_DET, |
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}, |
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[PM805_IRQ_SHRT_BTN_DET] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_RAW_PLL_FAULT, |
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}, |
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[PM805_IRQ_MIC_DET] = { |
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.reg_offset = 1, |
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.mask = PM805_INT2_FINE_PLL_FAULT, |
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}, |
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}; |
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static int device_irq_init_805(struct pm80x_chip *chip) |
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{ |
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struct regmap *map = chip->regmap; |
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unsigned long flags = IRQF_ONESHOT; |
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int data, mask, ret = -EINVAL; |
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if (!map || !chip->irq) { |
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dev_err(chip->dev, "incorrect parameters\n"); |
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return -EINVAL; |
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} |
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/* |
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* irq_mode defines the way of clearing interrupt. it's read-clear by |
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* default. |
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*/ |
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mask = |
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PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT | |
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PM800_STATUS0_INT_MASK; |
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data = PM805_STATUS0_INT_CLEAR; |
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ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data); |
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/* |
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* PM805_INT_STATUS is under 32K clock domain, so need to |
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* add proper delay before the next I2C register access. |
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*/ |
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usleep_range(1000, 3000); |
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if (ret < 0) |
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goto out; |
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ret = |
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regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1, |
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chip->regmap_irq_chip, &chip->irq_data); |
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out: |
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return ret; |
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} |
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static void device_irq_exit_805(struct pm80x_chip *chip) |
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{ |
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regmap_del_irq_chip(chip->irq, chip->irq_data); |
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} |
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static struct regmap_irq_chip pm805_irq_chip = { |
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.name = "88pm805", |
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.irqs = pm805_irqs, |
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.num_irqs = ARRAY_SIZE(pm805_irqs), |
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.num_regs = 2, |
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.status_base = PM805_INT_STATUS1, |
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.mask_base = PM805_INT_MASK1, |
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.ack_base = PM805_INT_STATUS1, |
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}; |
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static int device_805_init(struct pm80x_chip *chip) |
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{ |
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int ret = 0; |
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struct regmap *map = chip->regmap; |
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if (!map) { |
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dev_err(chip->dev, "regmap is invalid\n"); |
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return -EINVAL; |
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} |
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chip->regmap_irq_chip = &pm805_irq_chip; |
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ret = device_irq_init_805(chip); |
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if (ret < 0) { |
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dev_err(chip->dev, "Failed to init pm805 irq!\n"); |
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goto out_irq_init; |
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} |
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ret = mfd_add_devices(chip->dev, 0, &codec_devs[0], |
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ARRAY_SIZE(codec_devs), &codec_resources[0], 0, |
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NULL); |
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if (ret < 0) { |
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dev_err(chip->dev, "Failed to add codec subdev\n"); |
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goto out_codec; |
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} else |
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dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__); |
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return 0; |
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out_codec: |
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device_irq_exit_805(chip); |
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out_irq_init: |
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return ret; |
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} |
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static int pm805_probe(struct i2c_client *client, |
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const struct i2c_device_id *id) |
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{ |
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int ret = 0; |
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struct pm80x_chip *chip; |
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struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev); |
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ret = pm80x_init(client); |
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if (ret) { |
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dev_err(&client->dev, "pm805_init fail!\n"); |
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goto out_init; |
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} |
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chip = i2c_get_clientdata(client); |
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ret = device_805_init(chip); |
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if (ret) { |
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dev_err(chip->dev, "Failed to initialize 88pm805 devices\n"); |
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goto err_805_init; |
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} |
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if (pdata && pdata->plat_config) |
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pdata->plat_config(chip, pdata); |
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err_805_init: |
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pm80x_deinit(); |
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out_init: |
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return ret; |
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} |
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static int pm805_remove(struct i2c_client *client) |
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{ |
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struct pm80x_chip *chip = i2c_get_clientdata(client); |
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mfd_remove_devices(chip->dev); |
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device_irq_exit_805(chip); |
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pm80x_deinit(); |
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return 0; |
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} |
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static struct i2c_driver pm805_driver = { |
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.driver = { |
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.name = "88PM805", |
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.pm = &pm80x_pm_ops, |
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}, |
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.probe = pm805_probe, |
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.remove = pm805_remove, |
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.id_table = pm80x_id_table, |
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}; |
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static int __init pm805_i2c_init(void) |
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{ |
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return i2c_add_driver(&pm805_driver); |
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} |
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subsys_initcall(pm805_i2c_init); |
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static void __exit pm805_i2c_exit(void) |
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{ |
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i2c_del_driver(&pm805_driver); |
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} |
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module_exit(pm805_i2c_exit); |
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MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805"); |
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MODULE_AUTHOR("Qiao Zhou <[email protected]>"); |
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MODULE_LICENSE("GPL");
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