qualcomm GPIO 框架

PMI gpio chip

.

0

PMIC gpio chip

devtree(platform dev):pinctrl@1000000 {   compatible = \

TLMM gpio num

统一编址原则，除GPIO chip从0 开始编址外，其他的chip按注册时的先后顺序，从大到小注册。

IRQ_CHIP:

framework层统一编址(gpiolib)

GPIO_DESC

qcom具体平台相关数据（msm8953/msm8952..etc）

msm_function

\tconst char *name;\tconst char * const *groups;\tunsigned ngroups;

PMI_gpio_num

各chip独立编址

pinX

Namepctrl_dev

pin1

ARCH_NR_GPIOS - PMIC_gpio_num-PMI_gpio_num

pinctrl_select_state api所调用的最终接口

pinctrl_pin_desc

\tunsigned number;\tconst char *name;\tvoid *drv_data;

chip独立编址基本是连续的，因为这个编址决定了寄存器的offset

qcom平台相关数据

pinctrl_dev(core_dev与平台无关)

\tstruct list_head node;\tstruct pinctrl_desc *desc;\tstruct radix_tree_root pin_desc_tree;\tstruct list_head gpio_ranges;\tstruct device *dev;\tstruct module *owner;\tvoid *driver_data;\tstruct pinctrl *p;\tstruct pinctrl_state *hog_default;\tstruct pinctrl_state *hog_sleep;\tstruct mutex mutex;#ifdef CONFIG_DEBUG_FS\tstruct dentry *device_root;#endif

gpio_desc 0

struct gpio_chip\t*chip;\tunsigned long\t\tflags;\tconst char\t\t*label;

pinctrl_dev(另一个chip，如pmic)

msm_pinctrl_soc_data

\tconst struct pinctrl_pin_desc *pins;//all pin\tunsigned npins;\tconst struct msm_function *functions; //all func\tunsigned nfunctions;\tconst struct msm_pingroup *groups; //all gpio\tunsigned ngroups;\tunsigned ngpios;

msm_pinctrl

TLMM gpio chip

gpio_chip

pin0

ARCH_NR_GPIOS - PMIC_gpio_num

msm_pingroup

\tconst char *name;\tconst unsigned *pins;\tunsigned npins;\tunsigned *funcs;\tunsigned nfuncs;\tu32 ctl_reg;\tu32 io_reg;\tu32 intr_cfg_reg;\tu32 intr_status_reg;\tu32 intr_target_reg;\tunsigned mux_bit:5;\tunsigned pull_bit:5;\tunsigned drv_bit:5;\tunsigned oe_bit:5;\tunsigned in_bit:5;\tunsigned out_bit:5;\tunsigned intr_enable_bit:5;\tunsigned intr_status_bit:5;\tunsigned intr_ack_high:1;\tunsigned intr_target_bit:5;\tunsigned intr_target_kpss_val:5;\tunsigned intr_raw_status_bit:5;\tunsigned intr_polarity_bit:5;\tunsigned intr_detection_bit:5;\tunsigned intr_detection_width:5;

PMIC_gpio_num

pinctrl_desc

\tconst char *name;\tstruct pinctrl_pin_desc const *pins;\tunsigned int npins;\tconst struct pinctrl_ops *pctlops; //for gpio desc\tconst struct pinmux_ops *pmxops; // for gpio alternate\tconst struct pinconf_ops *confops; // fpr gpio config\tstruct module *owner;

ARCH_NR_GPIOS