From 51ff47aa4c933f17839cd31d7f349841df0a6f38 Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Sun, 11 Nov 2018 22:00:46 +0100 Subject: [PATCH] pinctrl: rockchip: allow specifying the regmap location for pin-routes Right now we expect the pin-rounting settings to be in the same area as the iomux setting itself. And while that seems to be true for all newer Rockchip socs, back in the wild west days of old this wasn't true. Nowadays pin settings in the GRF normally stay in the GRF and the same is true for pins configured from PMU registers. But old socs like the rk3188 really sprinkle pin settings somewhat randomly through both for its bank0. Therefore add the option to specify a location for the route setting, so that we can map older socs correctly. We'll keep "same" as the default, so that we only need to specify a location in the corner-cases described above. Signed-off-by: Heiko Stuebner Reviewed-by: David Wu Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-rockchip.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 95e4a06de019..246bf14c7f72 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -307,6 +307,12 @@ struct rockchip_mux_recalced_data { u8 mask; }; +enum rockchip_mux_route_location { + ROCKCHIP_ROUTE_SAME = 0, + ROCKCHIP_ROUTE_PMU, + ROCKCHIP_ROUTE_GRF, +}; + /** * struct rockchip_mux_recalced_data: represent a pin iomux data. * @bank_num: bank number. @@ -319,6 +325,7 @@ struct rockchip_mux_route_data { u8 bank_num; u8 pin; u8 func; + enum rockchip_mux_route_location route_location; u32 route_offset; u32 route_val; }; @@ -1091,7 +1098,7 @@ static struct rockchip_mux_route_data rk3399_mux_route_data[] = { }; static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin, - int mux, u32 *reg, u32 *value) + int mux, u32 *loc, u32 *reg, u32 *value) { struct rockchip_pinctrl *info = bank->drvdata; struct rockchip_pin_ctrl *ctrl = info->ctrl; @@ -1108,6 +1115,7 @@ static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin, if (i >= ctrl->niomux_routes) return false; + *loc = data->route_location; *reg = data->route_offset; *value = data->route_val; @@ -1210,7 +1218,7 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) struct regmap *regmap; int reg, ret, mask, mux_type; u8 bit; - u32 data, rmask, route_reg, route_val; + u32 data, rmask, route_location, route_reg, route_val; ret = rockchip_verify_mux(bank, pin, mux); if (ret < 0) @@ -1247,9 +1255,21 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) rockchip_get_recalced_mux(bank, pin, ®, &bit, &mask); if (bank->route_mask & BIT(pin)) { - if (rockchip_get_mux_route(bank, pin, mux, &route_reg, - &route_val)) { - ret = regmap_write(regmap, route_reg, route_val); + if (rockchip_get_mux_route(bank, pin, mux, &route_location, + &route_reg, &route_val)) { + struct regmap *route_regmap = regmap; + + /* handle special locations */ + switch (route_location) { + case ROCKCHIP_ROUTE_PMU: + route_regmap = info->regmap_pmu; + break; + case ROCKCHIP_ROUTE_GRF: + route_regmap = info->regmap_base; + break; + } + + ret = regmap_write(route_regmap, route_reg, route_val); if (ret) return ret; }