static int pm8901_init_regulator(struct pm8901_chip *chip,
struct pm8901_vreg *vreg)
{
int rc, i;
u8 bank;
if (vreg->type == REGULATOR_TYPE_LDO) {
for (i = 0; i < LDO_TEST_BANKS; i++) {
bank = REGULATOR_BANK_SEL(i);
rc = pm8901_write(chip, vreg->test_addr,
&bank, 1);
if (rc)
goto bail;
rc = pm8901_read(chip, vreg->test_addr,
&vreg->test_reg[i], 1);
if (rc)
goto bail;
}
}
rc = pm8901_read(chip, vreg->ctrl_addr, &vreg->ctrl_reg, 1);
if (rc)
goto bail;
rc = pm8901_read(chip, vreg->pmr_addr, &vreg->pmr_reg, 1);
bail:
if (rc)
pr_err("%s: pm8901_read failed\n", __func__);
return rc;
}
static int data_get(void *data, u64 *val)
{
struct pm8901_dbg_device *dbgdev = data;
int rc;
u8 reg;
mutex_lock(&dbgdev->dbg_mutex);
rc = check_addr(dbgdev->addr, __func__);
if (rc)
goto done;
rc = pm8901_read(dbgdev->pm_chip, dbgdev->addr, ®, 1);
if (rc) {
pr_err("%s: FAIL pm8901_read(0x%03X)=0x%02X: rc=%d\n",
__func__, dbgdev->addr, reg, rc);
goto done;
}
*val = reg;
done:
mutex_unlock(&dbgdev->dbg_mutex);
return rc;
}
int pm8901_reset_pwr_off(int reset)
{
int rc = 0, i;
uint8_t pmr;
uint8_t pmr_addr[4] = {
SSBI_REG_ADDR_S2_PMR,
SSBI_REG_ADDR_S3_PMR,
SSBI_REG_ADDR_S4_PMR,
SSBI_REG_ADDR_S1_PMR,
};
/* Turn off regulators S1, S2, S3, S4 when shutting down. */
if (!reset) {
for (i = 0; i < 4; i++) {
rc = pm8901_read(&pmr, 1, pmr_addr[i]);
if (rc) {
goto get_out;
}
pmr &= ~REGULATOR_PMR_STATE_MASK;
pmr |= REGULATOR_PMR_STATE_OFF;
rc = pm8901_write(&pmr, 1, pmr_addr[i]);
if (rc) {
goto get_out;
}
}
}
get_out:
return rc;
}
/*
* PMIC 8901 LDO vreg read.
*/
int pm8901_test_bank_read(uint8_t * buffer, uint8_t bank, uint16_t addr)
{
int ret = pm8901_write(&bank, 1, addr);
/* if the write does not work we can't read. */
if (ret) {
return ret;
}
return pm8901_read(buffer, 1, addr);
}
static inline int pm8901_tm_read_ctrl(struct pm8901_chip *chip, u8 *reg)
{
int rc;
rc = pm8901_read(chip, SSBI_REG_TEMP_ALRM_CTRL, reg, 1);
if (rc)
pr_err("%s: pm8901_read FAIL: rc=%d\n", __func__, rc);
return rc;
}
static int lcd_power_on()
{
uint8_t buffer = 0x0, mask = 0x0, prev_val = 0x0;
int ret = 0;
/* Configure LDO L2 TEST Bank 2, to Range Select 0 */
/* Not updating reference voltage */
buffer = (0x80); /* Write mode */
buffer |= (PM8901_LDO_TEST_BANK(2)); /* Test Bank 2 */
mask = buffer | LDO_TEST_RANGE_SELECT_MASK;
if ((ret = pm8901_test_bank_read(&prev_val,
PM8901_LDO_TEST_BANK(2),
PM8901_LDO_L2_TEST_BANK))) {
return ret;
}
if ((ret = pm8901_vreg_write(&buffer, mask, PM8901_LDO_L2_TEST_BANK,
prev_val))) {
return ret;
}
/* Enable LDO L2 at Max Voltage (should be around 3.3v) */
buffer = (0x0 << PM8901_LDO_CTL_ENABLE__S);
/* Disable Pull Down */
buffer |= (0x1 << PM8901_LDO_CTL_PULL_DOWN__S);
/* Put LDO into normal mode instead of low power mode */
buffer |= (0x0 << PM8901_LDO_CTL_MODE__S);
/* Set voltage programming to 3.3V or 2.85V(8660 fluid) */
if (board_machtype() == LINUX_MACHTYPE_8660_FLUID)
buffer |= (0xB);
else
buffer |= (0xF);
mask = buffer | LDO_CTL_ENABLE_MASK |
LDO_CTL_PULL_DOWN_MASK |
LDO_CTL_NORMAL_POWER_MODE_MASK | LDO_CTL_VOLTAGE_SET_MASK;
/* Do a normal read here, as to not destroy the value in LDO control */
if ((ret = pm8901_read(&prev_val, 1, PM8901_LDO_L2))) {
return ret;
}
/* Configure the LDO2 for 3.3V or 2.85V(8660 fluid) */
ret = pm8901_vreg_write(&buffer, mask, PM8901_LDO_L2, prev_val);
/* Configure LDO L2 TEST Bank 4, for High Range Mode */
buffer = (0x80); /* Write mode */
buffer |= (PM8901_LDO_TEST_BANK(4)); /* Test Bank 4 */
buffer |= (0x01); /* Put into High Range Mode */
mask = buffer | LDO_TEST_OUTPUT_RANGE_MASK;
if ((ret = pm8901_test_bank_read(&prev_val,
PM8901_LDO_TEST_BANK(4),
PM8901_LDO_L2_TEST_BANK))) {
return ret;
}
if ((ret = pm8901_vreg_write(&buffer, mask, PM8901_LDO_L2_TEST_BANK,
prev_val))) {
return ret;
}
/* Configure LDO L2 TEST Bank 2, to Range Select 0 */
buffer = (0x80); /* Write mode */
buffer |= (PM8901_LDO_TEST_BANK(2)); /* Test Bank 2 */
buffer |= (1<<1); /* For fine step 50 mV */
buffer |= (1<<3); /* to update reference voltage */
mask = buffer | LDO_TEST_RANGE_SELECT_MASK;
mask |= (1<<2); /* Setting mask to make ref voltage as 1.25 V */
if ((ret = pm8901_test_bank_read(&prev_val,
PM8901_LDO_TEST_BANK(2),
PM8901_LDO_L2_TEST_BANK))) {
return ret;
}
if ((ret = pm8901_vreg_write(&buffer, mask, PM8901_LDO_L2_TEST_BANK,
prev_val))) {
return ret;
}
/* Enable PMR for LDO L2 */
buffer = 0x7F;
mask = 0x7F;
if ((ret = pm8901_read(&prev_val, 1, PM8901_PMR_7))) {
return ret;
}
ret = pm8901_vreg_write(&buffer, mask, PM8901_PMR_7, prev_val);
return ret;
}
