diff options
Diffstat (limited to 'drivers/pinctrl/freescale/pinctrl-imx.h')
| -rw-r--r-- | drivers/pinctrl/freescale/pinctrl-imx.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h new file mode 100644 index 000000000..fd8c4b6b3 --- /dev/null +++ b/drivers/pinctrl/freescale/pinctrl-imx.h @@ -0,0 +1,159 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * IMX pinmux core definitions + * + * Copyright (C) 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Linaro Ltd. + * + * Author: Dong Aisheng <dong.aisheng@linaro.org> + */ + +#ifndef __DRIVERS_PINCTRL_IMX_H +#define __DRIVERS_PINCTRL_IMX_H + +#include <linux/pinctrl/pinconf-generic.h> +#include <linux/pinctrl/pinmux.h> + +struct platform_device; + +extern struct pinmux_ops imx_pmx_ops; +extern const struct dev_pm_ops imx_pinctrl_pm_ops; + +/** + * struct imx_pin_mmio - MMIO pin configurations + * @mux_mode: the mux mode for this pin. + * @input_reg: the select input register offset for this pin if any + * 0 if no select input setting needed. + * @input_val: the select input value for this pin. + * @configs: the config for this pin. + */ +struct imx_pin_mmio { + unsigned int mux_mode; + u16 input_reg; + unsigned int input_val; + unsigned long config; +}; + +/** + * struct imx_pin_scu - SCU pin configurations + * @mux: the mux mode for this pin. + * @configs: the config for this pin. + */ +struct imx_pin_scu { + unsigned int mux_mode; + unsigned long config; +}; + +/** + * struct imx_pin - describes a single i.MX pin + * @pin: the pin_id of this pin + * @conf: config type of this pin, either mmio or scu + */ +struct imx_pin { + unsigned int pin; + union { + struct imx_pin_mmio mmio; + struct imx_pin_scu scu; + } conf; +}; + +/** + * struct imx_pin_reg - describe a pin reg map + * @mux_reg: mux register offset + * @conf_reg: config register offset + */ +struct imx_pin_reg { + s16 mux_reg; + s16 conf_reg; +}; + +/* decode a generic config into raw register value */ +struct imx_cfg_params_decode { + enum pin_config_param param; + u32 mask; + u8 shift; + bool invert; +}; + +/** + * @dev: a pointer back to containing device + * @base: the offset to the controller in virtual memory + */ +struct imx_pinctrl { + struct device *dev; + struct pinctrl_dev *pctl; + void __iomem *base; + void __iomem *input_sel_base; + const struct imx_pinctrl_soc_info *info; + struct imx_pin_reg *pin_regs; + unsigned int group_index; + struct mutex mutex; +}; + +struct imx_pinctrl_soc_info { + const struct pinctrl_pin_desc *pins; + unsigned int npins; + unsigned int flags; + const char *gpr_compatible; + + /* MUX_MODE shift and mask in case SHARE_MUX_CONF_REG */ + unsigned int mux_mask; + u8 mux_shift; + + /* generic pinconf */ + bool generic_pinconf; + const struct pinconf_generic_params *custom_params; + unsigned int num_custom_params; + const struct imx_cfg_params_decode *decodes; + unsigned int num_decodes; + void (*fixup)(unsigned long *configs, unsigned int num_configs, + u32 *raw_config); + + int (*gpio_set_direction)(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset, + bool input); + int (*imx_pinconf_get)(struct pinctrl_dev *pctldev, unsigned int pin_id, + unsigned long *config); + int (*imx_pinconf_set)(struct pinctrl_dev *pctldev, unsigned int pin_id, + unsigned long *configs, unsigned int num_configs); + void (*imx_pinctrl_parse_pin)(struct imx_pinctrl *ipctl, + unsigned int *pin_id, struct imx_pin *pin, + const __be32 **list_p); +}; + +#define IMX_CFG_PARAMS_DECODE(p, m, o) \ + { .param = p, .mask = m, .shift = o, .invert = false, } + +#define IMX_CFG_PARAMS_DECODE_INVERT(p, m, o) \ + { .param = p, .mask = m, .shift = o, .invert = true, } + +#define SHARE_MUX_CONF_REG BIT(0) +#define ZERO_OFFSET_VALID BIT(1) +#define IMX_USE_SCU BIT(2) + +#define NO_MUX 0x0 +#define NO_PAD 0x0 + +#define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin) + +#define PAD_CTL_MASK(len) ((1 << len) - 1) +#define IMX_MUX_MASK 0x7 +#define IOMUXC_CONFIG_SION (0x1 << 4) + +int imx_pinctrl_probe(struct platform_device *pdev, + const struct imx_pinctrl_soc_info *info); + +#define BM_PAD_CTL_GP_ENABLE BIT(30) +#define BM_PAD_CTL_IFMUX_ENABLE BIT(31) +#define BP_PAD_CTL_IFMUX 27 + +int imx_pinctrl_sc_ipc_init(struct platform_device *pdev); +int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, unsigned pin_id, + unsigned long *config); +int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id, + unsigned long *configs, unsigned num_configs); +void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, + unsigned int *pin_id, struct imx_pin *pin, + const __be32 **list_p); +#endif /* __DRIVERS_PINCTRL_IMX_H */ |