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pinctrl: renesas: rzg2l: Add support for enabling/disabling open-drain outputs

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Add support for enabling and disabling open-drain outputs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/20241004123658.764557-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Lad Prabhakar 2024-10-04 13:36:57 +01:00 committed by Geert Uytterhoeven
parent f07e2b681e
commit 9d75b70061
1 changed files with 23 additions and 0 deletions
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23
drivers/pinctrl/renesas/pinctrl-rzg2l.c
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@ -139,6 +139,7 @@
#define IEN(off) (0x1800 + (off) * 8)
#define PUPD(off) (0x1C00 + (off) * 8)
#define ISEL(off) (0x2C00 + (off) * 8)
#define NOD(off) (0x3000 + (off) * 8)
#define SD_CH(off, ch) ((off) + (ch) * 4)
#define ETH_POC(off, ch) ((off) + (ch) * 4)
#define QSPI (0x3008)
@ -160,6 +161,7 @@
#define IOLH_MASK 0x03
#define SR_MASK 0x01
#define PUPD_MASK 0x03
#define NOD_MASK 0x01
#define PM_INPUT 0x1
#define PM_OUTPUT 0x2
@ -1338,6 +1340,18 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
break;
}
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
case PIN_CONFIG_DRIVE_PUSH_PULL:
if (!(cfg & PIN_CFG_NOD))
return -EINVAL;
arg = rzg2l_read_pin_config(pctrl, NOD(off), bit, NOD_MASK);
if (!arg && param != PIN_CONFIG_DRIVE_PUSH_PULL)
return -EINVAL;
if (arg && param != PIN_CONFIG_DRIVE_OPEN_DRAIN)
return -EINVAL;
break;
case RENESAS_RZV2H_PIN_CONFIG_OUTPUT_IMPEDANCE:
if (!(cfg & PIN_CFG_IOLH_RZV2H))
return -EINVAL;
@ -1467,6 +1481,15 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
break;
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
case PIN_CONFIG_DRIVE_PUSH_PULL:
if (!(cfg & PIN_CFG_NOD))
return -EINVAL;
rzg2l_rmw_pin_config(pctrl, NOD(off), bit, NOD_MASK,
param == PIN_CONFIG_DRIVE_OPEN_DRAIN ? 1 : 0);
break;
case RENESAS_RZV2H_PIN_CONFIG_OUTPUT_IMPEDANCE:
if (!(cfg & PIN_CFG_IOLH_RZV2H))
return -EINVAL;