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path: root/drivers/gpio/pm8916_gpio.c
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Diffstat (limited to 'drivers/gpio/pm8916_gpio.c')
-rw-r--r--drivers/gpio/pm8916_gpio.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/drivers/gpio/pm8916_gpio.c b/drivers/gpio/pm8916_gpio.c
deleted file mode 100644
index 7ad95784a8..0000000000
--- a/drivers/gpio/pm8916_gpio.c
+++ /dev/null
@@ -1,303 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Qualcomm pm8916 pmic gpio driver - part of Qualcomm PM8916 PMIC
- *
- * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
- */
-
-#include <common.h>
-#include <dm.h>
-#include <log.h>
-#include <power/pmic.h>
-#include <spmi/spmi.h>
-#include <asm/io.h>
-#include <asm/gpio.h>
-#include <linux/bitops.h>
-
-/* Register offset for each gpio */
-#define REG_OFFSET(x) ((x) * 0x100)
-
-/* Register maps */
-
-/* Type and subtype are shared for all pm8916 peripherals */
-#define REG_TYPE 0x4
-#define REG_SUBTYPE 0x5
-
-#define REG_STATUS 0x08
-#define REG_STATUS_VAL_MASK 0x1
-
-/* MODE_CTL */
-#define REG_CTL 0x40
-#define REG_CTL_MODE_MASK 0x70
-#define REG_CTL_MODE_INPUT 0x00
-#define REG_CTL_MODE_INOUT 0x20
-#define REG_CTL_MODE_OUTPUT 0x10
-#define REG_CTL_OUTPUT_MASK 0x0F
-
-#define REG_DIG_VIN_CTL 0x41
-#define REG_DIG_VIN_VIN0 0
-
-#define REG_DIG_PULL_CTL 0x42
-#define REG_DIG_PULL_NO_PU 0x5
-
-#define REG_DIG_OUT_CTL 0x45
-#define REG_DIG_OUT_CTL_CMOS (0x0 << 4)
-#define REG_DIG_OUT_CTL_DRIVE_L 0x1
-
-#define REG_EN_CTL 0x46
-#define REG_EN_CTL_ENABLE (1 << 7)
-
-struct pm8916_gpio_bank {
- uint32_t pid; /* Peripheral ID on SPMI bus */
-};
-
-static int pm8916_gpio_set_direction(struct udevice *dev, unsigned offset,
- bool input, int value)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- uint32_t gpio_base = priv->pid + REG_OFFSET(offset);
- int ret;
-
- /* Disable the GPIO */
- ret = pmic_clrsetbits(dev->parent, gpio_base + REG_EN_CTL,
- REG_EN_CTL_ENABLE, 0);
- if (ret < 0)
- return ret;
-
- /* Select the mode */
- if (input)
- ret = pmic_reg_write(dev->parent, gpio_base + REG_CTL,
- REG_CTL_MODE_INPUT);
- else
- ret = pmic_reg_write(dev->parent, gpio_base + REG_CTL,
- REG_CTL_MODE_INOUT | (value ? 1 : 0));
- if (ret < 0)
- return ret;
-
- /* Set the right pull (no pull) */
- ret = pmic_reg_write(dev->parent, gpio_base + REG_DIG_PULL_CTL,
- REG_DIG_PULL_NO_PU);
- if (ret < 0)
- return ret;
-
- /* Configure output pin drivers if needed */
- if (!input) {
- /* Select the VIN - VIN0, pin is input so it doesn't matter */
- ret = pmic_reg_write(dev->parent, gpio_base + REG_DIG_VIN_CTL,
- REG_DIG_VIN_VIN0);
- if (ret < 0)
- return ret;
-
- /* Set the right dig out control */
- ret = pmic_reg_write(dev->parent, gpio_base + REG_DIG_OUT_CTL,
- REG_DIG_OUT_CTL_CMOS |
- REG_DIG_OUT_CTL_DRIVE_L);
- if (ret < 0)
- return ret;
- }
-
- /* Enable the GPIO */
- return pmic_clrsetbits(dev->parent, gpio_base + REG_EN_CTL, 0,
- REG_EN_CTL_ENABLE);
-}
-
-static int pm8916_gpio_direction_input(struct udevice *dev, unsigned offset)
-{
- return pm8916_gpio_set_direction(dev, offset, true, 0);
-}
-
-static int pm8916_gpio_direction_output(struct udevice *dev, unsigned offset,
- int value)
-{
- return pm8916_gpio_set_direction(dev, offset, false, value);
-}
-
-static int pm8916_gpio_get_function(struct udevice *dev, unsigned offset)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- uint32_t gpio_base = priv->pid + REG_OFFSET(offset);
- int reg;
-
- /* Set the output value of the gpio */
- reg = pmic_reg_read(dev->parent, gpio_base + REG_CTL);
- if (reg < 0)
- return reg;
-
- switch (reg & REG_CTL_MODE_MASK) {
- case REG_CTL_MODE_INPUT:
- return GPIOF_INPUT;
- case REG_CTL_MODE_INOUT: /* Fallthrough */
- case REG_CTL_MODE_OUTPUT:
- return GPIOF_OUTPUT;
- default:
- return GPIOF_UNKNOWN;
- }
-}
-
-static int pm8916_gpio_get_value(struct udevice *dev, unsigned offset)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- uint32_t gpio_base = priv->pid + REG_OFFSET(offset);
- int reg;
-
- reg = pmic_reg_read(dev->parent, gpio_base + REG_STATUS);
- if (reg < 0)
- return reg;
-
- return !!(reg & REG_STATUS_VAL_MASK);
-}
-
-static int pm8916_gpio_set_value(struct udevice *dev, unsigned offset,
- int value)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- uint32_t gpio_base = priv->pid + REG_OFFSET(offset);
-
- /* Set the output value of the gpio */
- return pmic_clrsetbits(dev->parent, gpio_base + REG_CTL,
- REG_CTL_OUTPUT_MASK, !!value);
-}
-
-static const struct dm_gpio_ops pm8916_gpio_ops = {
- .direction_input = pm8916_gpio_direction_input,
- .direction_output = pm8916_gpio_direction_output,
- .get_value = pm8916_gpio_get_value,
- .set_value = pm8916_gpio_set_value,
- .get_function = pm8916_gpio_get_function,
-};
-
-static int pm8916_gpio_probe(struct udevice *dev)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- int reg;
-
- priv->pid = dev_read_addr(dev);
- if (priv->pid == FDT_ADDR_T_NONE)
- return log_msg_ret("bad address", -EINVAL);
-
- /* Do a sanity check */
- reg = pmic_reg_read(dev->parent, priv->pid + REG_TYPE);
- if (reg != 0x10)
- return log_msg_ret("bad type", -ENXIO);
-
- reg = pmic_reg_read(dev->parent, priv->pid + REG_SUBTYPE);
- if (reg != 0x5 && reg != 0x1)
- return log_msg_ret("bad subtype", -ENXIO);
-
- return 0;
-}
-
-static int pm8916_gpio_of_to_plat(struct udevice *dev)
-{
- struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
-
- uc_priv->gpio_count = dev_read_u32_default(dev, "gpio-count", 0);
- uc_priv->bank_name = dev_read_string(dev, "gpio-bank-name");
- if (uc_priv->bank_name == NULL)
- uc_priv->bank_name = "pm8916";
-
- return 0;
-}
-
-static const struct udevice_id pm8916_gpio_ids[] = {
- { .compatible = "qcom,pm8916-gpio" },
- { .compatible = "qcom,pm8994-gpio" }, /* 22 GPIO's */
- { .compatible = "qcom,pm8998-gpio" },
- { }
-};
-
-U_BOOT_DRIVER(gpio_pm8916) = {
- .name = "gpio_pm8916",
- .id = UCLASS_GPIO,
- .of_match = pm8916_gpio_ids,
- .of_to_plat = pm8916_gpio_of_to_plat,
- .probe = pm8916_gpio_probe,
- .ops = &pm8916_gpio_ops,
- .priv_auto = sizeof(struct pm8916_gpio_bank),
-};
-
-
-/* Add pmic buttons as GPIO as well - there is no generic way for now */
-#define PON_INT_RT_STS 0x10
-#define KPDPWR_ON_INT_BIT 0
-#define RESIN_ON_INT_BIT 1
-
-static int pm8941_pwrkey_get_function(struct udevice *dev, unsigned offset)
-{
- return GPIOF_INPUT;
-}
-
-static int pm8941_pwrkey_get_value(struct udevice *dev, unsigned offset)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
-
- int reg = pmic_reg_read(dev->parent, priv->pid + PON_INT_RT_STS);
-
- if (reg < 0)
- return 0;
-
- switch (offset) {
- case 0: /* Power button */
- return (reg & BIT(KPDPWR_ON_INT_BIT)) != 0;
- break;
- case 1: /* Reset button */
- default:
- return (reg & BIT(RESIN_ON_INT_BIT)) != 0;
- break;
- }
-}
-
-static const struct dm_gpio_ops pm8941_pwrkey_ops = {
- .get_value = pm8941_pwrkey_get_value,
- .get_function = pm8941_pwrkey_get_function,
-};
-
-static int pm8941_pwrkey_probe(struct udevice *dev)
-{
- struct pm8916_gpio_bank *priv = dev_get_priv(dev);
- int reg;
-
- priv->pid = dev_read_addr(dev);
- if (priv->pid == FDT_ADDR_T_NONE)
- return log_msg_ret("bad address", -EINVAL);
-
- /* Do a sanity check */
- reg = pmic_reg_read(dev->parent, priv->pid + REG_TYPE);
- if (reg != 0x1)
- return log_msg_ret("bad type", -ENXIO);
-
- reg = pmic_reg_read(dev->parent, priv->pid + REG_SUBTYPE);
- if ((reg & 0x5) == 0)
- return log_msg_ret("bad subtype", -ENXIO);
-
- return 0;
-}
-
-static int pm8941_pwrkey_of_to_plat(struct udevice *dev)
-{
- struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
-
- uc_priv->gpio_count = 2;
- uc_priv->bank_name = dev_read_string(dev, "gpio-bank-name");
- if (uc_priv->bank_name == NULL)
- uc_priv->bank_name = "pm8916_key";
-
- return 0;
-}
-
-static const struct udevice_id pm8941_pwrkey_ids[] = {
- { .compatible = "qcom,pm8916-pwrkey" },
- { .compatible = "qcom,pm8994-pwrkey" },
- { .compatible = "qcom,pm8998-pwrkey" },
- { }
-};
-
-U_BOOT_DRIVER(pwrkey_pm89xx) = {
- .name = "pwrkey_pm89xx",
- .id = UCLASS_GPIO,
- .of_match = pm8941_pwrkey_ids,
- .of_to_plat = pm8941_pwrkey_of_to_plat,
- .probe = pm8941_pwrkey_probe,
- .ops = &pm8941_pwrkey_ops,
- .priv_auto = sizeof(struct pm8916_gpio_bank),
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 20:57:08 +0000