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Diffstat (limited to 'drivers/mfd/88pm805.c')
-rw-r--r--drivers/mfd/88pm805.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/drivers/mfd/88pm805.c b/drivers/mfd/88pm805.c
new file mode 100644
index 000000000000..6146583589f6
--- /dev/null
+++ b/drivers/mfd/88pm805.c
@@ -0,0 +1,301 @@
+/*
+ * Base driver for Marvell 88PM805
+ *
+ * Copyright (C) 2012 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ * Joseph(Yossi) Hanin <yhanin@marvell.com>
+ * Qiao Zhou <zhouqiao@marvell.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm80x.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#define PM805_CHIP_ID (0x00)
+
+static const struct i2c_device_id pm80x_id_table[] = {
+ {"88PM805", CHIP_PM805},
+ {} /* NULL terminated */
+};
+MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
+
+/* Interrupt Number in 88PM805 */
+enum {
+ PM805_IRQ_LDO_OFF, /*0 */
+ PM805_IRQ_SRC_DPLL_LOCK, /*1 */
+ PM805_IRQ_CLIP_FAULT,
+ PM805_IRQ_MIC_CONFLICT,
+ PM805_IRQ_HP2_SHRT,
+ PM805_IRQ_HP1_SHRT, /*5 */
+ PM805_IRQ_FINE_PLL_FAULT,
+ PM805_IRQ_RAW_PLL_FAULT,
+ PM805_IRQ_VOLP_BTN_DET,
+ PM805_IRQ_VOLM_BTN_DET,
+ PM805_IRQ_SHRT_BTN_DET, /*10 */
+ PM805_IRQ_MIC_DET, /*11 */
+
+ PM805_MAX_IRQ,
+};
+
+static struct resource codec_resources[] = {
+ {
+ /* Headset microphone insertion or removal */
+ .name = "micin",
+ .start = PM805_IRQ_MIC_DET,
+ .end = PM805_IRQ_MIC_DET,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ /* Audio short HP1 */
+ .name = "audio-short1",
+ .start = PM805_IRQ_HP1_SHRT,
+ .end = PM805_IRQ_HP1_SHRT,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ /* Audio short HP2 */
+ .name = "audio-short2",
+ .start = PM805_IRQ_HP2_SHRT,
+ .end = PM805_IRQ_HP2_SHRT,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell codec_devs[] = {
+ {
+ .name = "88pm80x-codec",
+ .num_resources = ARRAY_SIZE(codec_resources),
+ .resources = &codec_resources[0],
+ .id = -1,
+ },
+};
+
+static struct regmap_irq pm805_irqs[] = {
+ /* INT0 */
+ [PM805_IRQ_LDO_OFF] = {
+ .mask = PM805_INT1_HP1_SHRT,
+ },
+ [PM805_IRQ_SRC_DPLL_LOCK] = {
+ .mask = PM805_INT1_HP2_SHRT,
+ },
+ [PM805_IRQ_CLIP_FAULT] = {
+ .mask = PM805_INT1_MIC_CONFLICT,
+ },
+ [PM805_IRQ_MIC_CONFLICT] = {
+ .mask = PM805_INT1_CLIP_FAULT,
+ },
+ [PM805_IRQ_HP2_SHRT] = {
+ .mask = PM805_INT1_LDO_OFF,
+ },
+ [PM805_IRQ_HP1_SHRT] = {
+ .mask = PM805_INT1_SRC_DPLL_LOCK,
+ },
+ /* INT1 */
+ [PM805_IRQ_FINE_PLL_FAULT] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_MIC_DET,
+ },
+ [PM805_IRQ_RAW_PLL_FAULT] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_SHRT_BTN_DET,
+ },
+ [PM805_IRQ_VOLP_BTN_DET] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_VOLM_BTN_DET,
+ },
+ [PM805_IRQ_VOLM_BTN_DET] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_VOLP_BTN_DET,
+ },
+ [PM805_IRQ_SHRT_BTN_DET] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_RAW_PLL_FAULT,
+ },
+ [PM805_IRQ_MIC_DET] = {
+ .reg_offset = 1,
+ .mask = PM805_INT2_FINE_PLL_FAULT,
+ },
+};
+
+static int __devinit device_irq_init_805(struct pm80x_chip *chip)
+{
+ struct regmap *map = chip->regmap;
+ unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+ int data, mask, ret = -EINVAL;
+
+ if (!map || !chip->irq) {
+ dev_err(chip->dev, "incorrect parameters\n");
+ return -EINVAL;
+ }
+
+ /*
+ * irq_mode defines the way of clearing interrupt. it's read-clear by
+ * default.
+ */
+ mask =
+ PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT |
+ PM800_STATUS0_INT_MASK;
+
+ data = PM805_STATUS0_INT_CLEAR;
+ ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);
+ /*
+ * PM805_INT_STATUS is under 32K clock domain, so need to
+ * add proper delay before the next I2C register access.
+ */
+ msleep(1);
+
+ if (ret < 0)
+ goto out;
+
+ ret =
+ regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
+ chip->regmap_irq_chip, &chip->irq_data);
+
+out:
+ return ret;
+}
+
+static void device_irq_exit_805(struct pm80x_chip *chip)
+{
+ regmap_del_irq_chip(chip->irq, chip->irq_data);
+}
+
+static struct regmap_irq_chip pm805_irq_chip = {
+ .name = "88pm805",
+ .irqs = pm805_irqs,
+ .num_irqs = ARRAY_SIZE(pm805_irqs),
+
+ .num_regs = 2,
+ .status_base = PM805_INT_STATUS1,
+ .mask_base = PM805_INT_MASK1,
+ .ack_base = PM805_INT_STATUS1,
+};
+
+static int __devinit device_805_init(struct pm80x_chip *chip)
+{
+ int ret = 0;
+ unsigned int val;
+ struct regmap *map = chip->regmap;
+
+ if (!map) {
+ dev_err(chip->dev, "regmap is invalid\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_read(map, PM805_CHIP_ID, &val);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
+ goto out_irq_init;
+ }
+ chip->version = val;
+
+ chip->regmap_irq_chip = &pm805_irq_chip;
+
+ ret = device_irq_init_805(chip);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to init pm805 irq!\n");
+ goto out_irq_init;
+ }
+
+ ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
+ ARRAY_SIZE(codec_devs), &codec_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add codec subdev\n");
+ goto out_codec;
+ } else
+ dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);
+
+ return 0;
+
+out_codec:
+ device_irq_exit_805(chip);
+out_irq_init:
+ return ret;
+}
+
+static int __devinit pm805_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret = 0;
+ struct pm80x_chip *chip;
+ struct pm80x_platform_data *pdata = client->dev.platform_data;
+
+ ret = pm80x_init(client, id);
+ if (ret) {
+ dev_err(&client->dev, "pm805_init fail!\n");
+ goto out_init;
+ }
+
+ chip = i2c_get_clientdata(client);
+
+ ret = device_805_init(chip);
+ if (ret) {
+ dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id);
+ goto err_805_init;
+ }
+
+ if (pdata->plat_config)
+ pdata->plat_config(chip, pdata);
+
+err_805_init:
+ pm80x_deinit(client);
+out_init:
+ return ret;
+}
+
+static int __devexit pm805_remove(struct i2c_client *client)
+{
+ struct pm80x_chip *chip = i2c_get_clientdata(client);
+
+ mfd_remove_devices(chip->dev);
+ device_irq_exit_805(chip);
+
+ pm80x_deinit(client);
+
+ return 0;
+}
+
+static struct i2c_driver pm805_driver = {
+ .driver = {
+ .name = "88PM80X",
+ .owner = THIS_MODULE,
+ .pm = &pm80x_pm_ops,
+ },
+ .probe = pm805_probe,
+ .remove = __devexit_p(pm805_remove),
+ .id_table = pm80x_id_table,
+};
+
+static int __init pm805_i2c_init(void)
+{
+ return i2c_add_driver(&pm805_driver);
+}
+subsys_initcall(pm805_i2c_init);
+
+static void __exit pm805_i2c_exit(void)
+{
+ i2c_del_driver(&pm805_driver);
+}
+module_exit(pm805_i2c_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
+MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
+MODULE_LICENSE("GPL");
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-06 05:45:22 +0000