A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge "soc: pinctrl-lpi: Enable gpio for swr tx data3 for lito v2"

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qctecmdr 2019-10-03 20:07:55 -07:00 • committed by Gerrit - the friendly Code Review server
commit 4b5cc9dcbe
1 changed files with 25 additions and 0 deletions
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25
soc/pinctrl-lpi.c
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@ -86,6 +86,7 @@ enum lpi_gpio_func_index {
* @base: stores one of gpio_base or slew_base at a given time.
* @gpio_base: Address base of LPI GPIO PAD.
* @slew_base: Address base of LPI SLEW PAD.
* @lpi_slew_reg: Address for lpi slew reg.
* @pullup: Constant current which flow through GPIO output buffer.
* @strength: No, Low, Medium, High
* @function: See lpi_gpio_functions[]
@ -99,6 +100,7 @@ struct lpi_gpio_pad {
char __iomem *base;
char __iomem *gpio_base;
char __iomem *slew_base;
char __iomem *lpi_slew_reg;
unsigned int pullup;
unsigned int strength;
unsigned int function;
@ -126,6 +128,7 @@ static const char *const lpi_gpio_groups[] = {
#define LPI_TLMM_MAX_PINS 100
static u32 lpi_offset[LPI_TLMM_MAX_PINS];
static u32 lpi_slew_offset[LPI_TLMM_MAX_PINS];
static u32 lpi_slew_base[LPI_TLMM_MAX_PINS];
static const char *const lpi_gpio_functions[] = {
[LPI_GPIO_FUNC_INDEX_GPIO] = LPI_GPIO_FUNC_GPIO,
@ -366,6 +369,12 @@ static int lpi_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
pad->base = pad->slew_base;
pad->offset = 0;
mutex_lock(&state->slew_access_lock);
if (pad->lpi_slew_reg != NULL) {
pad->base = pad->lpi_slew_reg;
lpi_gpio_write(pad, LPI_SLEW_REG_VAL_CTL, arg);
pad->base = pad->slew_base;
goto slew_exit;
}
val = lpi_gpio_read(pad, LPI_SLEW_REG_VAL_CTL);
pad->offset = pad->slew_offset;
for (i = 0; i < LPI_SLEW_BITS_SIZE; i++) {
@ -378,6 +387,7 @@ static int lpi_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
}
pad->offset = 0;
lpi_gpio_write(pad, LPI_SLEW_REG_VAL_CTL, val);
slew_exit:
mutex_unlock(&state->slew_access_lock);
break;
default:
@ -646,6 +656,16 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
__func__, ret);
}
ret = of_property_read_u32_array(dev->of_node,
"qcom,lpi-slew-base-tbl",
lpi_slew_base, npins);
if (ret < 0) {
for (i = 0; i < npins; i++)
lpi_slew_base[i] = LPI_SLEW_OFFSET_INVALID;
dev_dbg(dev, "%s: error in reading lpi slew table: %d\n",
__func__, ret);
}
state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
if (!state)
return -ENOMEM;
@ -712,6 +732,11 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
pad->gpio_offset = lpi_offset[i];
pad->slew_offset = lpi_slew_offset[i];
pad->offset = pad->gpio_offset;
pad->lpi_slew_reg = NULL;
if ((lpi_slew_base[i] != LPI_SLEW_OFFSET_INVALID) &&
lpi_slew_base[i])
pad->lpi_slew_reg = devm_ioremap(dev,
lpi_slew_base[i], 0x4);
}
state->chip = lpi_gpio_template;