diff options
Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-msm.h')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.h b/drivers/pinctrl/qcom/pinctrl-msm.h new file mode 100644 index 000000000..dd0d949f7 --- /dev/null +++ b/drivers/pinctrl/qcom/pinctrl-msm.h @@ -0,0 +1,157 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2013, Sony Mobile Communications AB. + */ +#ifndef __PINCTRL_MSM_H__ +#define __PINCTRL_MSM_H__ + +struct pinctrl_pin_desc; + +/** + * struct msm_function - a pinmux function + * @name: Name of the pinmux function. + * @groups: List of pingroups for this function. + * @ngroups: Number of entries in @groups. + */ +struct msm_function { + const char *name; + const char * const *groups; + unsigned ngroups; +}; + +/** + * struct msm_pingroup - Qualcomm pingroup definition + * @name: Name of the pingroup. + * @pins: A list of pins assigned to this pingroup. + * @npins: Number of entries in @pins. + * @funcs: A list of pinmux functions that can be selected for + * this group. The index of the selected function is used + * for programming the function selector. + * Entries should be indices into the groups list of the + * struct msm_pinctrl_soc_data. + * @ctl_reg: Offset of the register holding control bits for this group. + * @io_reg: Offset of the register holding input/output bits for this group. + * @intr_cfg_reg: Offset of the register holding interrupt configuration bits. + * @intr_status_reg: Offset of the register holding the status bits for this group. + * @intr_target_reg: Offset of the register specifying routing of the interrupts + * from this group. + * @mux_bit: Offset in @ctl_reg for the pinmux function selection. + * @pull_bit: Offset in @ctl_reg for the bias configuration. + * @drv_bit: Offset in @ctl_reg for the drive strength configuration. + * @od_bit: Offset in @ctl_reg for controlling open drain. + * @oe_bit: Offset in @ctl_reg for controlling output enable. + * @in_bit: Offset in @io_reg for the input bit value. + * @out_bit: Offset in @io_reg for the output bit value. + * @intr_enable_bit: Offset in @intr_cfg_reg for enabling the interrupt for this group. + * @intr_status_bit: Offset in @intr_status_reg for reading and acking the interrupt + * status. + * @intr_target_bit: Offset in @intr_target_reg for configuring the interrupt routing. + * @intr_target_kpss_val: Value in @intr_target_bit for specifying that the interrupt from + * this gpio should get routed to the KPSS processor. + * @intr_raw_status_bit: Offset in @intr_cfg_reg for the raw status bit. + * @intr_polarity_bit: Offset in @intr_cfg_reg for specifying polarity of the interrupt. + * @intr_detection_bit: Offset in @intr_cfg_reg for specifying interrupt type. + * @intr_detection_width: Number of bits used for specifying interrupt type, + * Should be 2 for SoCs that can detect both edges in hardware, + * otherwise 1. + */ +struct msm_pingroup { + const char *name; + const unsigned *pins; + unsigned npins; + + unsigned *funcs; + unsigned nfuncs; + + u32 ctl_reg; + u32 io_reg; + u32 intr_cfg_reg; + u32 intr_status_reg; + u32 intr_target_reg; + + unsigned int tile:2; + + unsigned mux_bit:5; + + unsigned pull_bit:5; + unsigned drv_bit:5; + + unsigned od_bit:5; + unsigned egpio_enable:5; + unsigned egpio_present:5; + unsigned oe_bit:5; + unsigned in_bit:5; + unsigned out_bit:5; + + unsigned intr_enable_bit:5; + unsigned intr_status_bit:5; + unsigned intr_ack_high:1; + + unsigned intr_target_bit:5; + unsigned intr_target_kpss_val:5; + unsigned intr_raw_status_bit:5; + unsigned intr_polarity_bit:5; + unsigned intr_detection_bit:5; + unsigned intr_detection_width:5; +}; + +/** + * struct msm_gpio_wakeirq_map - Map of GPIOs and their wakeup pins + * @gpio: The GPIOs that are wakeup capable + * @wakeirq: The interrupt at the always-on interrupt controller + */ +struct msm_gpio_wakeirq_map { + unsigned int gpio; + unsigned int wakeirq; +}; + +/** + * struct msm_pinctrl_soc_data - Qualcomm pin controller driver configuration + * @pins: An array describing all pins the pin controller affects. + * @npins: The number of entries in @pins. + * @functions: An array describing all mux functions the SoC supports. + * @nfunctions: The number of entries in @functions. + * @groups: An array describing all pin groups the pin SoC supports. + * @ngroups: The numbmer of entries in @groups. + * @ngpio: The number of pingroups the driver should expose as GPIOs. + * @pull_no_keeper: The SoC does not support keeper bias. + * @wakeirq_map: The map of wakeup capable GPIOs and the pin at PDC/MPM + * @nwakeirq_map: The number of entries in @wakeirq_map + * @wakeirq_dual_edge_errata: If true then GPIOs using the wakeirq_map need + * to be aware that their parent can't handle dual + * edge interrupts. + * @gpio_func: Which function number is GPIO (usually 0). + * @egpio_func: If non-zero then this SoC supports eGPIO. Even though in + * hardware this is a mux 1-level above the TLMM, we'll treat + * it as if this is just another mux state of the TLMM. Since + * it doesn't really map to hardware, we'll allocate a virtual + * function number for eGPIO and any time we see that function + * number used we'll treat it as a request to mux away from + * our TLMM towards another owner. + */ +struct msm_pinctrl_soc_data { + const struct pinctrl_pin_desc *pins; + unsigned npins; + const struct msm_function *functions; + unsigned nfunctions; + const struct msm_pingroup *groups; + unsigned ngroups; + unsigned ngpios; + bool pull_no_keeper; + const char *const *tiles; + unsigned int ntiles; + const int *reserved_gpios; + const struct msm_gpio_wakeirq_map *wakeirq_map; + unsigned int nwakeirq_map; + bool wakeirq_dual_edge_errata; + unsigned int gpio_func; + unsigned int egpio_func; +}; + +extern const struct dev_pm_ops msm_pinctrl_dev_pm_ops; + +int msm_pinctrl_probe(struct platform_device *pdev, + const struct msm_pinctrl_soc_data *soc_data); +int msm_pinctrl_remove(struct platform_device *pdev); + +#endif |