Merge commit 'AU_LINUX_ANDROID_ICS.04.00.04.00.126' into msm-3.4
AU_LINUX_ANDROID_ICS.04.00.04.00.126 from msm-3.0.
First parent is from google/android-3.4.
* commit 'AU_LINUX_ANDROID_ICS.04.00.04.00.126': (8712 commits)
PRNG: Device tree entry for qrng device.
vidc:1080p: Set video core timeout value for Thumbnail mode
msm: sps: improve the debugging support in SPS driver
board-8064 msm: Overlap secure and non secure video firmware heaps.
msm: clock: Add handoff ops for 7x30 and copper XO clocks
msm_fb: display: Wait for external vsync before DTV IOMMU unmap
msm: Fix ciruclar dependency in debug UART settings
msm: gdsc: Add GDSC regulator driver for msm-copper
defconfig: Enable Mobicore Driver.
mobicore: Add mobicore driver.
mobicore: rename variable to lower case.
mobicore: rename folder.
mobicore: add makefiles
mobicore: initial import of kernel driver
ASoC: msm: Add SLIMBUS_2_RX CPU DAI
board-8064-gpio: Update FUNC for EPM SPI CS
msm_fb: display: Remove chicken bit config during video playback
mmc: msm_sdcc: enable the sanitize capability
msm-fb: display: lm2 writeback support on mpq platfroms
msm_fb: display: Disable LVDS phy & pll during panel off
...
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
diff --git a/drivers/mfd/pm8xxx-misc.c b/drivers/mfd/pm8xxx-misc.c
new file mode 100644
index 0000000..0af013e
--- /dev/null
+++ b/drivers/mfd/pm8xxx-misc.c
@@ -0,0 +1,1256 @@
+/*
+ * Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/mfd/pm8xxx/core.h>
+#include <linux/mfd/pm8xxx/misc.h>
+
+/* PON CTRL 1 register */
+#define REG_PM8XXX_PON_CTRL_1 0x01C
+
+#define PON_CTRL_1_PULL_UP_MASK 0xE0
+#define PON_CTRL_1_USB_PWR_EN 0x10
+
+#define PON_CTRL_1_WD_EN_MASK 0x08
+#define PON_CTRL_1_WD_EN_RESET 0x08
+#define PON_CTRL_1_WD_EN_PWR_OFF 0x00
+
+/* PON CNTL registers */
+#define REG_PM8058_PON_CNTL_4 0x098
+#define REG_PM8901_PON_CNTL_4 0x099
+#define REG_PM8018_PON_CNTL_4 0x01E
+#define REG_PM8921_PON_CNTL_4 0x01E
+#define REG_PM8058_PON_CNTL_5 0x07B
+#define REG_PM8901_PON_CNTL_5 0x09A
+#define REG_PM8018_PON_CNTL_5 0x01F
+#define REG_PM8921_PON_CNTL_5 0x01F
+
+#define PON_CTRL_4_RESET_EN_MASK 0x01
+#define PON_CTRL_4_SHUTDOWN_ON_RESET 0x0
+#define PON_CTRL_4_RESTART_ON_RESET 0x1
+#define PON_CTRL_5_HARD_RESET_EN_MASK 0x08
+#define PON_CTRL_5_HARD_RESET_EN 0x08
+#define PON_CTRL_5_HARD_RESET_DIS 0x00
+
+/* Regulator master enable addresses */
+#define REG_PM8058_VREG_EN_MSM 0x018
+#define REG_PM8058_VREG_EN_GRP_5_4 0x1C8
+
+/* Regulator control registers for shutdown/reset */
+#define REG_PM8058_S0_CTRL 0x004
+#define REG_PM8058_S1_CTRL 0x005
+#define REG_PM8058_S3_CTRL 0x111
+#define REG_PM8058_L21_CTRL 0x120
+#define REG_PM8058_L22_CTRL 0x121
+
+#define PM8058_REGULATOR_ENABLE_MASK 0x80
+#define PM8058_REGULATOR_ENABLE 0x80
+#define PM8058_REGULATOR_DISABLE 0x00
+#define PM8058_REGULATOR_PULL_DOWN_MASK 0x40
+#define PM8058_REGULATOR_PULL_DOWN_EN 0x40
+
+/* Buck CTRL register */
+#define PM8058_SMPS_LEGACY_VREF_SEL 0x20
+#define PM8058_SMPS_LEGACY_VPROG_MASK 0x1F
+#define PM8058_SMPS_ADVANCED_BAND_MASK 0xC0
+#define PM8058_SMPS_ADVANCED_BAND_SHIFT 6
+#define PM8058_SMPS_ADVANCED_VPROG_MASK 0x3F
+
+/* Buck TEST2 registers for shutdown/reset */
+#define REG_PM8058_S0_TEST2 0x084
+#define REG_PM8058_S1_TEST2 0x085
+#define REG_PM8058_S3_TEST2 0x11A
+
+#define PM8058_REGULATOR_BANK_WRITE 0x80
+#define PM8058_REGULATOR_BANK_MASK 0x70
+#define PM8058_REGULATOR_BANK_SHIFT 4
+#define PM8058_REGULATOR_BANK_SEL(n) ((n) << PM8058_REGULATOR_BANK_SHIFT)
+
+/* Buck TEST2 register bank 1 */
+#define PM8058_SMPS_LEGACY_VLOW_SEL 0x01
+
+/* Buck TEST2 register bank 7 */
+#define PM8058_SMPS_ADVANCED_MODE_MASK 0x02
+#define PM8058_SMPS_ADVANCED_MODE 0x02
+#define PM8058_SMPS_LEGACY_MODE 0x00
+
+/* SLEEP CTRL register */
+#define REG_PM8058_SLEEP_CTRL 0x02B
+#define REG_PM8921_SLEEP_CTRL 0x10A
+#define REG_PM8018_SLEEP_CTRL 0x10A
+
+#define SLEEP_CTRL_SMPL_EN_MASK 0x04
+#define SLEEP_CTRL_SMPL_EN_RESET 0x04
+#define SLEEP_CTRL_SMPL_EN_PWR_OFF 0x00
+
+#define SLEEP_CTRL_SMPL_SEL_MASK 0x03
+#define SLEEP_CTRL_SMPL_SEL_MIN 0
+#define SLEEP_CTRL_SMPL_SEL_MAX 3
+
+/* FTS regulator PMR registers */
+#define REG_PM8901_REGULATOR_S1_PMR 0xA7
+#define REG_PM8901_REGULATOR_S2_PMR 0xA8
+#define REG_PM8901_REGULATOR_S3_PMR 0xA9
+#define REG_PM8901_REGULATOR_S4_PMR 0xAA
+
+#define PM8901_REGULATOR_PMR_STATE_MASK 0x60
+#define PM8901_REGULATOR_PMR_STATE_OFF 0x20
+
+/* COINCELL CHG registers */
+#define REG_PM8058_COIN_CHG 0x02F
+#define REG_PM8921_COIN_CHG 0x09C
+#define REG_PM8018_COIN_CHG 0x09C
+
+#define COINCELL_RESISTOR_SHIFT 0x2
+
+/* GP TEST register */
+#define REG_PM8XXX_GP_TEST_1 0x07A
+
+/* Stay on configuration */
+#define PM8XXX_STAY_ON_CFG 0x92
+
+/* GPIO UART MUX CTRL registers */
+#define REG_PM8XXX_GPIO_MUX_CTRL 0x1CC
+
+#define UART_PATH_SEL_MASK 0x60
+#define UART_PATH_SEL_SHIFT 0x5
+
+#define USB_ID_PU_EN_MASK 0x10 /* PM8921 family only */
+#define USB_ID_PU_EN_SHIFT 4
+
+/* Shutdown/restart delays to allow for LDO 7/dVdd regulator load settling. */
+#define PM8901_DELAY_AFTER_REG_DISABLE_MS 4
+#define PM8901_DELAY_BEFORE_SHUTDOWN_MS 8
+
+#define REG_PM8XXX_XO_CNTRL_2 0x114
+#define MP3_1_MASK 0xE0
+#define MP3_2_MASK 0x1C
+#define MP3_1_SHIFT 5
+#define MP3_2_SHIFT 2
+
+#define REG_HSED_BIAS0_CNTL2 0xA1
+#define REG_HSED_BIAS1_CNTL2 0x135
+#define REG_HSED_BIAS2_CNTL2 0x138
+#define HSED_EN_MASK 0xC0
+
+struct pm8xxx_misc_chip {
+ struct list_head link;
+ struct pm8xxx_misc_platform_data pdata;
+ struct device *dev;
+ enum pm8xxx_version version;
+ u64 osc_halt_count;
+};
+
+static LIST_HEAD(pm8xxx_misc_chips);
+static DEFINE_SPINLOCK(pm8xxx_misc_chips_lock);
+
+static int pm8xxx_misc_masked_write(struct pm8xxx_misc_chip *chip, u16 addr,
+ u8 mask, u8 val)
+{
+ int rc;
+ u8 reg;
+
+ rc = pm8xxx_readb(chip->dev->parent, addr, ®);
+ if (rc) {
+ pr_err("pm8xxx_readb(0x%03X) failed, rc=%d\n", addr, rc);
+ return rc;
+ }
+ reg &= ~mask;
+ reg |= val & mask;
+ rc = pm8xxx_writeb(chip->dev->parent, addr, reg);
+ if (rc)
+ pr_err("pm8xxx_writeb(0x%03X)=0x%02X failed, rc=%d\n", addr,
+ reg, rc);
+ return rc;
+}
+
+/*
+ * Set an SMPS regulator to be disabled in its CTRL register, but enabled
+ * in the master enable register. Also set it's pull down enable bit.
+ * Take care to make sure that the output voltage doesn't change if switching
+ * from advanced mode to legacy mode.
+ */
+static int
+__pm8058_disable_smps_locally_set_pull_down(struct pm8xxx_misc_chip *chip,
+ u16 ctrl_addr, u16 test2_addr, u16 master_enable_addr,
+ u8 master_enable_bit)
+{
+ int rc = 0;
+ u8 vref_sel, vlow_sel, band, vprog, bank, reg;
+
+ bank = PM8058_REGULATOR_BANK_SEL(7);
+ rc = pm8xxx_writeb(chip->dev->parent, test2_addr, bank);
+ if (rc) {
+ pr_err("%s: pm8xxx_writeb(0x%03X) failed: rc=%d\n", __func__,
+ test2_addr, rc);
+ goto done;
+ }
+
+ rc = pm8xxx_readb(chip->dev->parent, test2_addr, ®);
+ if (rc) {
+ pr_err("%s: FAIL pm8xxx_readb(0x%03X): rc=%d\n",
+ __func__, test2_addr, rc);
+ goto done;
+ }
+
+ /* Check if in advanced mode. */
+ if ((reg & PM8058_SMPS_ADVANCED_MODE_MASK) ==
+ PM8058_SMPS_ADVANCED_MODE) {
+ /* Determine current output voltage. */
+ rc = pm8xxx_readb(chip->dev->parent, ctrl_addr, ®);
+ if (rc) {
+ pr_err("%s: FAIL pm8xxx_readb(0x%03X): rc=%d\n",
+ __func__, ctrl_addr, rc);
+ goto done;
+ }
+
+ band = (reg & PM8058_SMPS_ADVANCED_BAND_MASK)
+ >> PM8058_SMPS_ADVANCED_BAND_SHIFT;
+ switch (band) {
+ case 3:
+ vref_sel = 0;
+ vlow_sel = 0;
+ break;
+ case 2:
+ vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
+ vlow_sel = 0;
+ break;
+ case 1:
+ vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
+ vlow_sel = PM8058_SMPS_LEGACY_VLOW_SEL;
+ break;
+ default:
+ pr_err("%s: regulator already disabled\n", __func__);
+ return -EPERM;
+ }
+ vprog = (reg & PM8058_SMPS_ADVANCED_VPROG_MASK);
+ /* Round up if fine step is in use. */
+ vprog = (vprog + 1) >> 1;
+ if (vprog > PM8058_SMPS_LEGACY_VPROG_MASK)
+ vprog = PM8058_SMPS_LEGACY_VPROG_MASK;
+
+ /* Set VLOW_SEL bit. */
+ bank = PM8058_REGULATOR_BANK_SEL(1);
+ rc = pm8xxx_writeb(chip->dev->parent, test2_addr, bank);
+ if (rc) {
+ pr_err("%s: FAIL pm8xxx_writeb(0x%03X): rc=%d\n",
+ __func__, test2_addr, rc);
+ goto done;
+ }
+
+ rc = pm8xxx_misc_masked_write(chip, test2_addr,
+ PM8058_REGULATOR_BANK_WRITE | PM8058_REGULATOR_BANK_MASK
+ | PM8058_SMPS_LEGACY_VLOW_SEL,
+ PM8058_REGULATOR_BANK_WRITE |
+ PM8058_REGULATOR_BANK_SEL(1) | vlow_sel);
+ if (rc)
+ goto done;
+
+ /* Switch to legacy mode */
+ bank = PM8058_REGULATOR_BANK_SEL(7);
+ rc = pm8xxx_writeb(chip->dev->parent, test2_addr, bank);
+ if (rc) {
+ pr_err("%s: FAIL pm8xxx_writeb(0x%03X): rc=%d\n",
+ __func__, test2_addr, rc);
+ goto done;
+ }
+ rc = pm8xxx_misc_masked_write(chip, test2_addr,
+ PM8058_REGULATOR_BANK_WRITE |
+ PM8058_REGULATOR_BANK_MASK |
+ PM8058_SMPS_ADVANCED_MODE_MASK,
+ PM8058_REGULATOR_BANK_WRITE |
+ PM8058_REGULATOR_BANK_SEL(7) |
+ PM8058_SMPS_LEGACY_MODE);
+ if (rc)
+ goto done;
+
+ /* Enable locally, enable pull down, keep voltage the same. */
+ rc = pm8xxx_misc_masked_write(chip, ctrl_addr,
+ PM8058_REGULATOR_ENABLE_MASK |
+ PM8058_REGULATOR_PULL_DOWN_MASK |
+ PM8058_SMPS_LEGACY_VREF_SEL |
+ PM8058_SMPS_LEGACY_VPROG_MASK,
+ PM8058_REGULATOR_ENABLE | PM8058_REGULATOR_PULL_DOWN_EN
+ | vref_sel | vprog);
+ if (rc)
+ goto done;
+ }
+
+ /* Enable in master control register. */
+ rc = pm8xxx_misc_masked_write(chip, master_enable_addr,
+ master_enable_bit, master_enable_bit);
+ if (rc)
+ goto done;
+
+ /* Disable locally and enable pull down. */
+ rc = pm8xxx_misc_masked_write(chip, ctrl_addr,
+ PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
+ PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
+
+done:
+ return rc;
+}
+
+static int
+__pm8058_disable_ldo_locally_set_pull_down(struct pm8xxx_misc_chip *chip,
+ u16 ctrl_addr, u16 master_enable_addr, u8 master_enable_bit)
+{
+ int rc;
+
+ /* Enable LDO in master control register. */
+ rc = pm8xxx_misc_masked_write(chip, master_enable_addr,
+ master_enable_bit, master_enable_bit);
+ if (rc)
+ goto done;
+
+ /* Disable LDO in CTRL register and set pull down */
+ rc = pm8xxx_misc_masked_write(chip, ctrl_addr,
+ PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
+ PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
+
+done:
+ return rc;
+}
+
+static int __pm8018_reset_pwr_off(struct pm8xxx_misc_chip *chip, int reset)
+{
+ int rc;
+
+ /* Enable SMPL if resetting is desired. */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8018_SLEEP_CTRL,
+ SLEEP_CTRL_SMPL_EN_MASK,
+ (reset ? SLEEP_CTRL_SMPL_EN_RESET : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ return rc;
+ }
+
+ /*
+ * Select action to perform (reset or shutdown) when PS_HOLD goes low.
+ * Also ensure that KPD, CBL0, and CBL1 pull ups are enabled and that
+ * USB charging is enabled.
+ */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8XXX_PON_CTRL_1,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | PON_CTRL_1_WD_EN_MASK,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | (reset ? PON_CTRL_1_WD_EN_RESET : PON_CTRL_1_WD_EN_PWR_OFF));
+ if (rc)
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+
+ return rc;
+}
+
+static int __pm8058_reset_pwr_off(struct pm8xxx_misc_chip *chip, int reset)
+{
+ int rc;
+
+ /* When shutting down, enable active pulldowns on important rails. */
+ if (!reset) {
+ /* Disable SMPS's 0,1,3 locally and set pulldown enable bits. */
+ __pm8058_disable_smps_locally_set_pull_down(chip,
+ REG_PM8058_S0_CTRL, REG_PM8058_S0_TEST2,
+ REG_PM8058_VREG_EN_MSM, BIT(7));
+ __pm8058_disable_smps_locally_set_pull_down(chip,
+ REG_PM8058_S1_CTRL, REG_PM8058_S1_TEST2,
+ REG_PM8058_VREG_EN_MSM, BIT(6));
+ __pm8058_disable_smps_locally_set_pull_down(chip,
+ REG_PM8058_S3_CTRL, REG_PM8058_S3_TEST2,
+ REG_PM8058_VREG_EN_GRP_5_4, BIT(7) | BIT(4));
+ /* Disable LDO 21 locally and set pulldown enable bit. */
+ __pm8058_disable_ldo_locally_set_pull_down(chip,
+ REG_PM8058_L21_CTRL, REG_PM8058_VREG_EN_GRP_5_4,
+ BIT(1));
+ }
+
+ /*
+ * Fix-up: Set regulator LDO22 to 1.225 V in high power mode. Leave its
+ * pull-down state intact. This ensures a safe shutdown.
+ */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8058_L22_CTRL, 0xBF, 0x93);
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ goto read_write_err;
+ }
+
+ /* Enable SMPL if resetting is desired. */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8058_SLEEP_CTRL,
+ SLEEP_CTRL_SMPL_EN_MASK,
+ (reset ? SLEEP_CTRL_SMPL_EN_RESET : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ goto read_write_err;
+ }
+
+ /*
+ * Select action to perform (reset or shutdown) when PS_HOLD goes low.
+ * Also ensure that KPD, CBL0, and CBL1 pull ups are enabled and that
+ * USB charging is enabled.
+ */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8XXX_PON_CTRL_1,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | PON_CTRL_1_WD_EN_MASK,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | (reset ? PON_CTRL_1_WD_EN_RESET : PON_CTRL_1_WD_EN_PWR_OFF));
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ goto read_write_err;
+ }
+
+read_write_err:
+ return rc;
+}
+
+static int __pm8901_reset_pwr_off(struct pm8xxx_misc_chip *chip, int reset)
+{
+ int rc = 0, i;
+ u8 pmr_addr[4] = {
+ REG_PM8901_REGULATOR_S2_PMR,
+ REG_PM8901_REGULATOR_S3_PMR,
+ REG_PM8901_REGULATOR_S4_PMR,
+ REG_PM8901_REGULATOR_S1_PMR,
+ };
+
+ /* Fix-up: Turn off regulators S1, S2, S3, S4 when shutting down. */
+ if (!reset) {
+ for (i = 0; i < 4; i++) {
+ rc = pm8xxx_misc_masked_write(chip, pmr_addr[i],
+ PM8901_REGULATOR_PMR_STATE_MASK,
+ PM8901_REGULATOR_PMR_STATE_OFF);
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, "
+ "rc=%d\n", rc);
+ goto read_write_err;
+ }
+ mdelay(PM8901_DELAY_AFTER_REG_DISABLE_MS);
+ }
+ }
+
+read_write_err:
+ mdelay(PM8901_DELAY_BEFORE_SHUTDOWN_MS);
+ return rc;
+}
+
+static int __pm8921_reset_pwr_off(struct pm8xxx_misc_chip *chip, int reset)
+{
+ int rc;
+
+ /* Enable SMPL if resetting is desired. */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8921_SLEEP_CTRL,
+ SLEEP_CTRL_SMPL_EN_MASK,
+ (reset ? SLEEP_CTRL_SMPL_EN_RESET : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ goto read_write_err;
+ }
+
+ /*
+ * Select action to perform (reset or shutdown) when PS_HOLD goes low.
+ * Also ensure that KPD, CBL0, and CBL1 pull ups are enabled and that
+ * USB charging is enabled.
+ */
+ rc = pm8xxx_misc_masked_write(chip, REG_PM8XXX_PON_CTRL_1,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | PON_CTRL_1_WD_EN_MASK,
+ PON_CTRL_1_PULL_UP_MASK | PON_CTRL_1_USB_PWR_EN
+ | (reset ? PON_CTRL_1_WD_EN_RESET : PON_CTRL_1_WD_EN_PWR_OFF));
+ if (rc) {
+ pr_err("pm8xxx_misc_masked_write failed, rc=%d\n", rc);
+ goto read_write_err;
+ }
+
+read_write_err:
+ return rc;
+}
+
+/**
+ * pm8xxx_reset_pwr_off - switch all PM8XXX PMIC chips attached to the system to
+ * either reset or shutdown when they are turned off
+ * @reset: 0 = shudown the PMICs, 1 = shutdown and then restart the PMICs
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_reset_pwr_off(int reset)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ rc = __pm8018_reset_pwr_off(chip, reset);
+ break;
+ case PM8XXX_VERSION_8058:
+ rc = __pm8058_reset_pwr_off(chip, reset);
+ break;
+ case PM8XXX_VERSION_8901:
+ rc = __pm8901_reset_pwr_off(chip, reset);
+ break;
+ case PM8XXX_VERSION_8038:
+ case PM8XXX_VERSION_8917:
+ case PM8XXX_VERSION_8921:
+ rc = __pm8921_reset_pwr_off(chip, reset);
+ break;
+ default:
+ /* PMIC doesn't have reset_pwr_off; do nothing. */
+ break;
+ }
+ if (rc) {
+ pr_err("reset_pwr_off failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(pm8xxx_reset_pwr_off);
+
+/**
+ * pm8xxx_smpl_control - enables/disables SMPL detection
+ * @enable: 0 = shutdown PMIC on power loss, 1 = reset PMIC on power loss
+ *
+ * This function enables or disables the Sudden Momentary Power Loss detection
+ * module. If SMPL detection is enabled, then when a sufficiently long power
+ * loss event occurs, the PMIC will automatically reset itself. If SMPL
+ * detection is disabled, then the PMIC will shutdown when power loss occurs.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_smpl_control(int enable)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8018_SLEEP_CTRL, SLEEP_CTRL_SMPL_EN_MASK,
+ (enable ? SLEEP_CTRL_SMPL_EN_RESET
+ : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ break;
+ case PM8XXX_VERSION_8058:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8058_SLEEP_CTRL, SLEEP_CTRL_SMPL_EN_MASK,
+ (enable ? SLEEP_CTRL_SMPL_EN_RESET
+ : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ break;
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8921_SLEEP_CTRL, SLEEP_CTRL_SMPL_EN_MASK,
+ (enable ? SLEEP_CTRL_SMPL_EN_RESET
+ : SLEEP_CTRL_SMPL_EN_PWR_OFF));
+ break;
+ default:
+ /* PMIC doesn't have reset_pwr_off; do nothing. */
+ break;
+ }
+ if (rc) {
+ pr_err("setting smpl control failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_smpl_control);
+
+
+/**
+ * pm8xxx_smpl_set_delay - sets the SMPL detection time delay
+ * @delay: enum value corresponding to delay time
+ *
+ * This function sets the time delay of the SMPL detection module. If power
+ * is reapplied within this interval, then the PMIC reset automatically. The
+ * SMPL detection module must be enabled for this delay time to take effect.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_smpl_set_delay(enum pm8xxx_smpl_delay delay)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ if (delay < SLEEP_CTRL_SMPL_SEL_MIN
+ || delay > SLEEP_CTRL_SMPL_SEL_MAX) {
+ pr_err("%s: invalid delay specified: %d\n", __func__, delay);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8018_SLEEP_CTRL, SLEEP_CTRL_SMPL_SEL_MASK,
+ delay);
+ break;
+ case PM8XXX_VERSION_8058:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8058_SLEEP_CTRL, SLEEP_CTRL_SMPL_SEL_MASK,
+ delay);
+ break;
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8921_SLEEP_CTRL, SLEEP_CTRL_SMPL_SEL_MASK,
+ delay);
+ break;
+ default:
+ /* PMIC doesn't have reset_pwr_off; do nothing. */
+ break;
+ }
+ if (rc) {
+ pr_err("setting smpl delay failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_smpl_set_delay);
+
+/**
+ * pm8xxx_coincell_chg_config - Disables or enables the coincell charger, and
+ * configures its voltage and resistor settings.
+ * @chg_config: Holds both voltage and resistor values, and a
+ * switch to change the state of charger.
+ * If state is to disable the charger then
+ * both voltage and resistor are disregarded.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_coincell_chg_config(struct pm8xxx_coincell_chg *chg_config)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ u8 reg = 0, voltage, resistor;
+ int rc = 0;
+
+ if (chg_config == NULL) {
+ pr_err("chg_config is NULL\n");
+ return -EINVAL;
+ }
+
+ voltage = chg_config->voltage;
+ resistor = chg_config->resistor;
+
+ if (resistor < PM8XXX_COINCELL_RESISTOR_2100_OHMS ||
+ resistor > PM8XXX_COINCELL_RESISTOR_800_OHMS) {
+ pr_err("Invalid resistor value provided\n");
+ return -EINVAL;
+ }
+
+ if (voltage < PM8XXX_COINCELL_VOLTAGE_3p2V ||
+ (voltage > PM8XXX_COINCELL_VOLTAGE_3p0V &&
+ voltage != PM8XXX_COINCELL_VOLTAGE_2p5V)) {
+ pr_err("Invalid voltage value provided\n");
+ return -EINVAL;
+ }
+
+ if (chg_config->state == PM8XXX_COINCELL_CHG_DISABLE) {
+ reg = 0;
+ } else {
+ reg |= voltage;
+ reg |= (resistor << COINCELL_RESISTOR_SHIFT);
+ }
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ rc = pm8xxx_writeb(chip->dev->parent,
+ REG_PM8018_COIN_CHG, reg);
+ break;
+ case PM8XXX_VERSION_8058:
+ rc = pm8xxx_writeb(chip->dev->parent,
+ REG_PM8058_COIN_CHG, reg);
+ break;
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_writeb(chip->dev->parent,
+ REG_PM8921_COIN_CHG, reg);
+ break;
+ default:
+ /* PMIC doesn't have reset_pwr_off; do nothing. */
+ break;
+ }
+ if (rc) {
+ pr_err("coincell chg. config failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_coincell_chg_config);
+
+/**
+ * pm8xxx_watchdog_reset_control - enables/disables watchdog reset detection
+ * @enable: 0 = shutdown when PS_HOLD goes low, 1 = reset when PS_HOLD goes low
+ *
+ * This function enables or disables the PMIC watchdog reset detection feature.
+ * If watchdog reset detection is enabled, then the PMIC will reset itself
+ * when PS_HOLD goes low. If it is not enabled, then the PMIC will shutdown
+ * when PS_HOLD goes low.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_watchdog_reset_control(int enable)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ case PM8XXX_VERSION_8058:
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8XXX_PON_CTRL_1, PON_CTRL_1_WD_EN_MASK,
+ (enable ? PON_CTRL_1_WD_EN_RESET
+ : PON_CTRL_1_WD_EN_PWR_OFF));
+ break;
+ default:
+ /* WD reset control not supported */
+ break;
+ }
+ if (rc) {
+ pr_err("setting WD reset control failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_watchdog_reset_control);
+
+/**
+ * pm8xxx_stay_on - enables stay_on feature
+ *
+ * PMIC stay-on feature allows PMIC to ignore MSM PS_HOLD=low
+ * signal so that some special functions like debugging could be
+ * performed.
+ *
+ * This feature should not be used in any product release.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_stay_on(void)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ case PM8XXX_VERSION_8058:
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_writeb(chip->dev->parent,
+ REG_PM8XXX_GP_TEST_1, PM8XXX_STAY_ON_CFG);
+ break;
+ default:
+ /* stay on not supported */
+ break;
+ }
+ if (rc) {
+ pr_err("stay_on failed failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_stay_on);
+
+static int
+__pm8xxx_hard_reset_config(struct pm8xxx_misc_chip *chip,
+ enum pm8xxx_pon_config config, u16 pon4_addr, u16 pon5_addr)
+{
+ int rc = 0;
+
+ switch (config) {
+ case PM8XXX_DISABLE_HARD_RESET:
+ rc = pm8xxx_misc_masked_write(chip, pon5_addr,
+ PON_CTRL_5_HARD_RESET_EN_MASK,
+ PON_CTRL_5_HARD_RESET_DIS);
+ break;
+ case PM8XXX_SHUTDOWN_ON_HARD_RESET:
+ rc = pm8xxx_misc_masked_write(chip, pon5_addr,
+ PON_CTRL_5_HARD_RESET_EN_MASK,
+ PON_CTRL_5_HARD_RESET_EN);
+ if (!rc) {
+ rc = pm8xxx_misc_masked_write(chip, pon4_addr,
+ PON_CTRL_4_RESET_EN_MASK,
+ PON_CTRL_4_SHUTDOWN_ON_RESET);
+ }
+ break;
+ case PM8XXX_RESTART_ON_HARD_RESET:
+ rc = pm8xxx_misc_masked_write(chip, pon5_addr,
+ PON_CTRL_5_HARD_RESET_EN_MASK,
+ PON_CTRL_5_HARD_RESET_EN);
+ if (!rc) {
+ rc = pm8xxx_misc_masked_write(chip, pon4_addr,
+ PON_CTRL_4_RESET_EN_MASK,
+ PON_CTRL_4_RESTART_ON_RESET);
+ }
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+ return rc;
+}
+
+/**
+ * pm8xxx_hard_reset_config - Allows different reset configurations
+ *
+ * config = PM8XXX_DISABLE_HARD_RESET to disable hard reset
+ * = PM8XXX_SHUTDOWN_ON_HARD_RESET to turn off the system on hard reset
+ * = PM8XXX_RESTART_ON_HARD_RESET to restart the system on hard reset
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_hard_reset_config(enum pm8xxx_pon_config config)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ __pm8xxx_hard_reset_config(chip, config,
+ REG_PM8018_PON_CNTL_4, REG_PM8018_PON_CNTL_5);
+ break;
+ case PM8XXX_VERSION_8058:
+ __pm8xxx_hard_reset_config(chip, config,
+ REG_PM8058_PON_CNTL_4, REG_PM8058_PON_CNTL_5);
+ break;
+ case PM8XXX_VERSION_8901:
+ __pm8xxx_hard_reset_config(chip, config,
+ REG_PM8901_PON_CNTL_4, REG_PM8901_PON_CNTL_5);
+ break;
+ case PM8XXX_VERSION_8921:
+ __pm8xxx_hard_reset_config(chip, config,
+ REG_PM8921_PON_CNTL_4, REG_PM8921_PON_CNTL_5);
+ break;
+ default:
+ /* hard reset config. no supported */
+ break;
+ }
+ if (rc) {
+ pr_err("hard reset config. failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_hard_reset_config);
+
+/* Handle the OSC_HALT interrupt: 32 kHz XTAL oscillator has stopped. */
+static irqreturn_t pm8xxx_osc_halt_isr(int irq, void *data)
+{
+ struct pm8xxx_misc_chip *chip = data;
+ u64 count = 0;
+
+ if (chip) {
+ chip->osc_halt_count++;
+ count = chip->osc_halt_count;
+ }
+
+ pr_crit("%s: OSC_HALT interrupt has triggered, 32 kHz XTAL oscillator"
+ " has halted (%llu)!\n", __func__, count);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * pm8xxx_uart_gpio_mux_ctrl - Mux configuration to select the UART
+ *
+ * @uart_path_sel: Input argument to select either UART1/2/3
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_uart_gpio_mux_ctrl(enum pm8xxx_uart_path_sel uart_path_sel)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8018:
+ case PM8XXX_VERSION_8058:
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8XXX_GPIO_MUX_CTRL, UART_PATH_SEL_MASK,
+ uart_path_sel << UART_PATH_SEL_SHIFT);
+ break;
+ default:
+ /* Functionality not supported */
+ break;
+ }
+ if (rc) {
+ pr_err("uart_gpio_mux_ctrl failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_uart_gpio_mux_ctrl);
+
+/**
+ * pm8xxx_usb_id_pullup - Control a pullup for USB ID
+ *
+ * @enable: enable (1) or disable (0) the pullup
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_usb_id_pullup(int enable)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = -ENXIO;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8921:
+ case PM8XXX_VERSION_8922:
+ case PM8XXX_VERSION_8917:
+ case PM8XXX_VERSION_8038:
+ rc = pm8xxx_misc_masked_write(chip,
+ REG_PM8XXX_GPIO_MUX_CTRL, USB_ID_PU_EN_MASK,
+ enable << USB_ID_PU_EN_SHIFT);
+
+ if (rc)
+ pr_err("Fail: reg=%x, rc=%d\n",
+ REG_PM8XXX_GPIO_MUX_CTRL, rc);
+ break;
+ default:
+ /* Functionality not supported */
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_usb_id_pullup);
+
+static int __pm8901_preload_dVdd(struct pm8xxx_misc_chip *chip)
+{
+ int rc;
+
+ /* dVdd preloading is not needed for PMIC PM8901 rev 2.3 and beyond. */
+ if (pm8xxx_get_revision(chip->dev->parent) >= PM8XXX_REVISION_8901_2p3)
+ return 0;
+
+ rc = pm8xxx_writeb(chip->dev->parent, 0x0BD, 0x0F);
+ if (rc)
+ pr_err("pm8xxx_writeb failed for 0x0BD, rc=%d\n", rc);
+
+ rc = pm8xxx_writeb(chip->dev->parent, 0x001, 0xB4);
+ if (rc)
+ pr_err("pm8xxx_writeb failed for 0x001, rc=%d\n", rc);
+
+ pr_info("dVdd preloaded\n");
+
+ return rc;
+}
+
+/**
+ * pm8xxx_preload_dVdd - preload the dVdd regulator during off state.
+ *
+ * This can help to reduce fluctuations in the dVdd voltage during startup
+ * at the cost of additional off state current draw.
+ *
+ * This API should only be called if dVdd startup issues are suspected.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_preload_dVdd(void)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8901:
+ rc = __pm8901_preload_dVdd(chip);
+ break;
+ default:
+ /* PMIC doesn't have preload_dVdd; do nothing. */
+ break;
+ }
+ if (rc) {
+ pr_err("preload_dVdd failed, rc=%d\n", rc);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(pm8xxx_preload_dVdd);
+
+int pm8xxx_aux_clk_control(enum pm8xxx_aux_clk_id clk_id,
+ enum pm8xxx_aux_clk_div divider, bool enable)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ u8 clk_mask = 0, value = 0;
+
+ if (clk_id == CLK_MP3_1) {
+ clk_mask = MP3_1_MASK;
+ value = divider << MP3_1_SHIFT;
+ } else if (clk_id == CLK_MP3_2) {
+ clk_mask = MP3_2_MASK;
+ value = divider << MP3_2_SHIFT;
+ } else {
+ pr_err("Invalid clock id of %d\n", clk_id);
+ return -EINVAL;
+ }
+ if (!enable)
+ value = 0;
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8038:
+ case PM8XXX_VERSION_8921:
+ pm8xxx_misc_masked_write(chip,
+ REG_PM8XXX_XO_CNTRL_2, clk_mask, value);
+ break;
+ default:
+ /* Functionality not supported */
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pm8xxx_aux_clk_control);
+
+int pm8xxx_hsed_bias_control(enum pm8xxx_hsed_bias bias, bool enable)
+{
+ struct pm8xxx_misc_chip *chip;
+ unsigned long flags;
+ int rc = 0;
+ u16 addr;
+
+ switch (bias) {
+ case PM8XXX_HSED_BIAS0:
+ addr = REG_HSED_BIAS0_CNTL2;
+ break;
+ case PM8XXX_HSED_BIAS1:
+ addr = REG_HSED_BIAS1_CNTL2;
+ break;
+ case PM8XXX_HSED_BIAS2:
+ addr = REG_HSED_BIAS2_CNTL2;
+ break;
+ default:
+ pr_err("Invalid BIAS line\n");
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+
+ /* Loop over all attached PMICs and call specific functions for them. */
+ list_for_each_entry(chip, &pm8xxx_misc_chips, link) {
+ switch (chip->version) {
+ case PM8XXX_VERSION_8058:
+ case PM8XXX_VERSION_8921:
+ rc = pm8xxx_misc_masked_write(chip, addr,
+ HSED_EN_MASK, enable ? HSED_EN_MASK : 0);
+ if (rc < 0)
+ pr_err("Enable HSED BIAS failed rc=%d\n", rc);
+ break;
+ default:
+ /* Functionality not supported */
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ return rc;
+}
+EXPORT_SYMBOL(pm8xxx_hsed_bias_control);
+
+static int __devinit pm8xxx_misc_probe(struct platform_device *pdev)
+{
+ const struct pm8xxx_misc_platform_data *pdata = pdev->dev.platform_data;
+ struct pm8xxx_misc_chip *chip;
+ struct pm8xxx_misc_chip *sibling;
+ struct list_head *prev;
+ unsigned long flags;
+ int rc = 0, irq;
+
+ if (!pdata) {
+ pr_err("missing platform data\n");
+ return -EINVAL;
+ }
+
+ chip = kzalloc(sizeof(struct pm8xxx_misc_chip), GFP_KERNEL);
+ if (!chip) {
+ pr_err("Cannot allocate %d bytes\n",
+ sizeof(struct pm8xxx_misc_chip));
+ return -ENOMEM;
+ }
+
+ chip->dev = &pdev->dev;
+ chip->version = pm8xxx_get_version(chip->dev->parent);
+ memcpy(&(chip->pdata), pdata, sizeof(struct pm8xxx_misc_platform_data));
+
+ irq = platform_get_irq_byname(pdev, "pm8xxx_osc_halt_irq");
+ if (irq > 0) {
+ rc = request_any_context_irq(irq, pm8xxx_osc_halt_isr,
+ IRQF_TRIGGER_RISING | IRQF_DISABLED,
+ "pm8xxx_osc_halt_irq", chip);
+ if (rc < 0) {
+ pr_err("%s: request_any_context_irq(%d) FAIL: %d\n",
+ __func__, irq, rc);
+ goto fail_irq;
+ }
+ }
+
+ /* Insert PMICs in priority order (lowest value first). */
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+ prev = &pm8xxx_misc_chips;
+ list_for_each_entry(sibling, &pm8xxx_misc_chips, link) {
+ if (chip->pdata.priority < sibling->pdata.priority)
+ break;
+ else
+ prev = &sibling->link;
+ }
+ list_add(&chip->link, prev);
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ platform_set_drvdata(pdev, chip);
+
+ return rc;
+
+fail_irq:
+ platform_set_drvdata(pdev, NULL);
+ kfree(chip);
+ return rc;
+}
+
+static int __devexit pm8xxx_misc_remove(struct platform_device *pdev)
+{
+ struct pm8xxx_misc_chip *chip = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int irq = platform_get_irq_byname(pdev, "pm8xxx_osc_halt_irq");
+ if (irq > 0)
+ free_irq(irq, chip);
+
+ spin_lock_irqsave(&pm8xxx_misc_chips_lock, flags);
+ list_del(&chip->link);
+ spin_unlock_irqrestore(&pm8xxx_misc_chips_lock, flags);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(chip);
+
+ return 0;
+}
+
+static struct platform_driver pm8xxx_misc_driver = {
+ .probe = pm8xxx_misc_probe,
+ .remove = __devexit_p(pm8xxx_misc_remove),
+ .driver = {
+ .name = PM8XXX_MISC_DEV_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init pm8xxx_misc_init(void)
+{
+ return platform_driver_register(&pm8xxx_misc_driver);
+}
+postcore_initcall(pm8xxx_misc_init);
+
+static void __exit pm8xxx_misc_exit(void)
+{
+ platform_driver_unregister(&pm8xxx_misc_driver);
+}
+module_exit(pm8xxx_misc_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("PMIC 8XXX misc driver");
+MODULE_VERSION("1.0");
+MODULE_ALIAS("platform:" PM8XXX_MISC_DEV_NAME);