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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * TLMM driver for Qualcomm APQ8016, APQ8096
- *
- * (C) Copyright 2018 Ramon Fried <ramon.fried@gmail.com>
- *
- */
- #include <common.h>
- #include <dm.h>
- #include <errno.h>
- #include <asm/io.h>
- #include <dm/pinctrl.h>
- #include <linux/bitops.h>
- #include "pinctrl-snapdragon.h"
- struct msm_pinctrl_priv {
- phys_addr_t base;
- struct msm_pinctrl_data *data;
- };
- #define GPIO_CONFIG_OFFSET(x) ((x) * 0x1000)
- #define TLMM_GPIO_PULL_MASK GENMASK(1, 0)
- #define TLMM_FUNC_SEL_MASK GENMASK(5, 2)
- #define TLMM_DRV_STRENGTH_MASK GENMASK(8, 6)
- #define TLMM_GPIO_DISABLE BIT(9)
- static const struct pinconf_param msm_conf_params[] = {
- { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 3 },
- { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
- };
- static int msm_get_functions_count(struct udevice *dev)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- return priv->data->functions_count;
- }
- static int msm_get_pins_count(struct udevice *dev)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- return priv->data->pin_count;
- }
- static const char *msm_get_function_name(struct udevice *dev,
- unsigned int selector)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- return priv->data->get_function_name(dev, selector);
- }
- static int msm_pinctrl_probe(struct udevice *dev)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- priv->base = devfdt_get_addr(dev);
- priv->data = (struct msm_pinctrl_data *)dev->driver_data;
- return priv->base == FDT_ADDR_T_NONE ? -EINVAL : 0;
- }
- static const char *msm_get_pin_name(struct udevice *dev, unsigned int selector)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- return priv->data->get_pin_name(dev, selector);
- }
- static int msm_pinmux_set(struct udevice *dev, unsigned int pin_selector,
- unsigned int func_selector)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
- TLMM_FUNC_SEL_MASK | TLMM_GPIO_DISABLE,
- priv->data->get_function_mux(func_selector) << 2);
- return 0;
- }
- static int msm_pinconf_set(struct udevice *dev, unsigned int pin_selector,
- unsigned int param, unsigned int argument)
- {
- struct msm_pinctrl_priv *priv = dev_get_priv(dev);
- switch (param) {
- case PIN_CONFIG_DRIVE_STRENGTH:
- clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
- TLMM_DRV_STRENGTH_MASK, argument << 6);
- break;
- case PIN_CONFIG_BIAS_DISABLE:
- clrbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
- TLMM_GPIO_PULL_MASK);
- break;
- default:
- return 0;
- }
- return 0;
- }
- static struct pinctrl_ops msm_pinctrl_ops = {
- .get_pins_count = msm_get_pins_count,
- .get_pin_name = msm_get_pin_name,
- .set_state = pinctrl_generic_set_state,
- .pinmux_set = msm_pinmux_set,
- .pinconf_num_params = ARRAY_SIZE(msm_conf_params),
- .pinconf_params = msm_conf_params,
- .pinconf_set = msm_pinconf_set,
- .get_functions_count = msm_get_functions_count,
- .get_function_name = msm_get_function_name,
- };
- static const struct udevice_id msm_pinctrl_ids[] = {
- { .compatible = "qcom,tlmm-apq8016", .data = (ulong)&apq8016_data },
- { .compatible = "qcom,tlmm-apq8096", .data = (ulong)&apq8096_data },
- { }
- };
- U_BOOT_DRIVER(pinctrl_snapdraon) = {
- .name = "pinctrl_msm",
- .id = UCLASS_PINCTRL,
- .of_match = msm_pinctrl_ids,
- .priv_auto_alloc_size = sizeof(struct msm_pinctrl_priv),
- .ops = &msm_pinctrl_ops,
- .probe = msm_pinctrl_probe,
- };
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