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pinctrl: sh-pfc: Add new non-GPIO helper macros

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Add new macros for describing pins without GPIO functionality:
  - NOGP_ALL() expands to a list of PIN_id values, to be used for
    generating symbolic enum values,
  - PINMUX_NOGP_ALL() expands to a list of sh_pfc_pin entries, to
    list all pins and their capabilities.
Both macros depend on an SoC-specific CPU_ALL_NOGP() macro, to be
provided by each individual SoC pin control driver.

The new macros offer two advantages over the existing SH_PFC_PIN_NAMED()
and SH_PFC_PIN_NAMED_CFG() macros:
  1. They do not rely on PIN_NUMBER() macros and physical pin numbering,
     hence do not suffer from pin numbering confusion among different
     SoC/SiP packages.
  2. They are similar in spirit to the existing scheme for handling pins
     with GPIO functionality.

Note that internal to the driver, non-GPIO pins use a sequential
numbering scheme which starts after the highest GPIO pin number in use.
This value is calculated automatically, using two new helper macros, for
systems with either 32-port bank (GP port style) or linear (PORT style)
pin space.  Sample expansion:

    GP_LAST = sizeof(union {
	char dummy[0] __attribute__((deprecated, deprecated));
	char GP_0_0[(0 * 32) + 0] __attribute__((deprecated, deprecated));
	char GP_0_1[(0 * 32) + 1] __attribute__((deprecated, deprecated));
	...
	char GP_7_3[(7 * 32) + 3] __attribute__((deprecated, deprecated));
    })

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
This commit is contained in:
Geert Uytterhoeven 2019-03-21 18:58:51 +01:00
parent dd1f760bff
commit 4818f44898
1 changed files with 56 additions and 0 deletions
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56
drivers/pinctrl/sh-pfc/sh_pfc.h
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@ -608,6 +608,24 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
#define _GP_DATA(bank, pin, name, sfx, cfg) PINMUX_DATA(name##_DATA, name##_FN)
#define PINMUX_DATA_GP_ALL() CPU_ALL_GP(_GP_DATA, unused)
/*
* GP_ASSIGN_LAST() - Expand to an enum definition for the last GP pin
*
* The largest GP pin index is obtained by taking the size of a union,
* containing one array per GP pin, sized by the corresponding pin index.
* As the fields in the CPU_ALL_GP() macro definition are separated by commas,
* while the members of a union must be terminated by semicolons, the commas
* are absorbed by wrapping them inside dummy attributes.
*/
#define _GP_ENTRY(bank, pin, name, sfx, cfg) \
deprecated)); char name[(bank * 32) + pin] __attribute__((deprecated
#define GP_ASSIGN_LAST() \
GP_LAST = sizeof(union { \
char dummy[0] __attribute__((deprecated, \
CPU_ALL_GP(_GP_ENTRY, unused), \
deprecated)); \
})
/*
* PORT style (linear pin space)
*/
@ -673,6 +691,24 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
PORT##pfx##_OUT, PORT##pfx##_IN)
#define PINMUX_DATA_ALL() CPU_ALL_PORT(_PORT_DATA, , unused)
/*
* PORT_ASSIGN_LAST() - Expand to an enum definition for the last PORT pin
*
* The largest PORT pin index is obtained by taking the size of a union,
* containing one array per PORT pin, sized by the corresponding pin index.
* As the fields in the CPU_ALL_PORT() macro definition are separated by
* commas, while the members of a union must be terminated by semicolons, the
* commas are absorbed by wrapping them inside dummy attributes.
*/
#define _PORT_ENTRY(pn, pfx, sfx) \
deprecated)); char pfx[pn] __attribute__((deprecated
#define PORT_ASSIGN_LAST() \
PORT_LAST = sizeof(union { \
char dummy[0] __attribute__((deprecated, \
CPU_ALL_PORT(_PORT_ENTRY, PORT, unused), \
deprecated)); \
})
/* GPIO_FN(name) - Expand to a sh_pfc_pin entry for a function GPIO */
#define PINMUX_GPIO_FN(gpio, base, data_or_mark) \
[gpio - (base)] = { \
@ -682,6 +718,26 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
#define GPIO_FN(str) \
PINMUX_GPIO_FN(GPIO_FN_##str, PINMUX_FN_BASE, str##_MARK)
/*
* Pins not associated with a GPIO port
*/
#define PIN_NOGP_CFG(pin, name, fn, cfg) fn(pin, name, cfg)
#define PIN_NOGP(pin, name, fn) fn(pin, name, 0)
/* NOGP_ALL - Expand to a list of PIN_id */
#define _NOGP_ALL(pin, name, cfg) PIN_##pin
#define NOGP_ALL() CPU_ALL_NOGP(_NOGP_ALL)
/* PINMUX_NOGP_ALL - Expand to a list of sh_pfc_pin entries */
#define _NOGP_PINMUX(_pin, _name, cfg) \
{ \
.pin = PIN_##_pin, \
.name = "PIN_" _name, \
.configs = SH_PFC_PIN_CFG_NO_GPIO | cfg, \
}
#define PINMUX_NOGP_ALL() CPU_ALL_NOGP(_NOGP_PINMUX)
/*
* PORTnCR helper macro for SH-Mobile/R-Mobile
*/