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pinctrl: intel: Make it possible to specify mode per pin in a group

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On some SoCs not all pins in a group use the same mode when a certain
function is muxed out of them. This makes it possible to specify mode per
pin as an array instead in addition to single integer.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Mika Westerberg 2017-06-06 16:18:18 +03:00 committed by Linus Walleij
parent 919eb4756e
commit 1f6b419b24
2 changed files with 26 additions and 8 deletions
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6
drivers/pinctrl/intel/pinctrl-intel.c
View File

@ -398,7 +398,11 @@ static int intel_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function,
value = readl(padcfg0);
value &= ~PADCFG0_PMODE_MASK;
value |= grp->mode << PADCFG0_PMODE_SHIFT;
if (grp->modes)
value |= grp->modes[i] << PADCFG0_PMODE_SHIFT;
else
value |= grp->mode << PADCFG0_PMODE_SHIFT;
writel(value, padcfg0);
}

28
drivers/pinctrl/intel/pinctrl-intel.h
View File

@ -22,13 +22,16 @@ struct device;
* @name: Name of the groups
* @pins: All pins in this group
* @npins: Number of pins in this groups
* @mode: Native mode in which the group is muxed out @pins
* @mode: Native mode in which the group is muxed out @pins. Used if @modes
* is %NULL.
* @modes: If not %NULL this will hold mode for each pin in @pins
*/
struct intel_pingroup {
const char *name;
const unsigned *pins;
size_t npins;
unsigned short mode;
const unsigned *modes;
};
/**
@ -112,12 +115,23 @@ struct intel_community {
#define PINCTRL_FEATURE_DEBOUNCE BIT(0)
#define PINCTRL_FEATURE_1K_PD BIT(1)
#define PIN_GROUP(n, p, m) \
{ \
.name = (n), \
.pins = (p), \
.npins = ARRAY_SIZE((p)), \
.mode = (m), \
/**
* PIN_GROUP - Declare a pin group
* @n: Name of the group
* @p: An array of pins this group consists
* @m: Mode which the pins are put when this group is active. Can be either
* a single integer or an array of integers in which case mode is per
* pin.
*/
#define PIN_GROUP(n, p, m) \
{ \
.name = (n), \
.pins = (p), \
.npins = ARRAY_SIZE((p)), \
.mode = __builtin_choose_expr( \
__builtin_constant_p((m)), (m), 0), \
.modes = __builtin_choose_expr( \
__builtin_constant_p((m)), NULL, (m)), \
}
#define FUNCTION(n, g) \