[PATCH 5.15 066/244] pinctrl: sunxi: Add I/O bias setting for H6 R-PIO

Greg Kroah-Hartman
2022-08-23T09:53:26Z

From: Samuel Holland <samuel@sholland.org>

commit fc153c8f283bf5925615195fc9d4056414d7b168 upstream.

H6 requires I/O bias configuration on both of its PIO devices.
Previously it was only done for the main PIO.

The setting for Port L is at bit 0, so the bank calculation needs to
account for the pin base. Otherwise the wrong bit is used.

Fixes: cc62383fcebe ("pinctrl: sunxi: Support I/O bias voltage setting on H6")
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20220713025233.27248-3-samuel@sholland.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c | 1 +
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 7 ++++---
2 files changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c
@@ -107,6 +107,7 @@ static const struct sunxi_pinctrl_desc s
.npins = ARRAY_SIZE(sun50i_h6_r_pins),
.pin_base = PL_BASE,
.irq_banks = 2,
+ .io_bias_cfg_variant = BIAS_VOLTAGE_PIO_POW_MODE_SEL,
};

static int sun50i_h6_r_pinctrl_probe(struct platform_device *pdev)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -624,7 +624,7 @@ static int sunxi_pinctrl_set_io_bias_cfg
unsigned pin,
struct regulator *supply)
{
- unsigned short bank = pin / PINS_PER_BANK;
+ unsigned short bank;
unsigned long flags;
u32 val, reg;
int uV;
@@ -640,6 +640,9 @@ static int sunxi_pinctrl_set_io_bias_cfg
if (uV == 0)
return 0;

+ pin -= pctl->desc->pin_base;
+ bank = pin / PINS_PER_BANK;
+
switch (pctl->desc->io_bias_cfg_variant) {
case BIAS_VOLTAGE_GRP_CONFIG:
/*
@@ -657,8 +660,6 @@ static int sunxi_pinctrl_set_io_bias_cfg
else
val = 0xD; /* 3.3V */

- pin -= pctl->desc->pin_base;
-
reg = readl(pctl->membase + sunxi_grp_config_reg(pin));
reg &= ~IO_BIAS_MASK;
writel(reg | val, pctl->membase + sunxi_grp_config_reg(pin));