diff options
author | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-03-21 18:58:51 +0100 |
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committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-06-04 11:19:00 +0200 |
commit | 4818f448986dd8d0e28b648be5f99c3f29abe6bf (patch) | |
tree | ccd86123d208fd694667067b05feed67e110b955 /drivers/pinctrl/sh-pfc/sh_pfc.h | |
parent | dd1f760bffcee2c567509033461dbcb01117b359 (diff) |
pinctrl: sh-pfc: Add new non-GPIO helper macros
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>
Diffstat (limited to 'drivers/pinctrl/sh-pfc/sh_pfc.h')
-rw-r--r-- | drivers/pinctrl/sh-pfc/sh_pfc.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h index 305a8db70ca8..a379698c9741 100644 --- a/drivers/pinctrl/sh-pfc/sh_pfc.h +++ b/drivers/pinctrl/sh-pfc/sh_pfc.h @@ -609,6 +609,24 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info; #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)] = { \ @@ -683,6 +719,26 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info; 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 */ #define PORTCR(nr, reg) \ |