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pinctrl: rockchip: Add rk3328 pinctrl support 

Note, the iomux of following pins are special, need to
be recalculated specially.
 - gpio2_b4
 - gpio2_b7
 - gpio2_c7

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
david.wu 2017-02-10 18:23:49 +08:00 committed by Linus Walleij
parent ea262ad6e4
commit 3818e4a767
2 changed files with 72 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
View File

@ -22,8 +22,8 @@ Required properties for iomux controller:
- compatible: one of "rockchip,rk1108-pinctrl", "rockchip,rk2928-pinctrl"
"rockchip,rk3066a-pinctrl", "rockchip,rk3066b-pinctrl"
"rockchip,rk3188-pinctrl", "rockchip,rk3228-pinctrl"
"rockchip,rk3288-pinctrl", "rockchip,rk3368-pinctrl"
"rockchip,rk3399-pinctrl"
"rockchip,rk3288-pinctrl", "rockchip,rk3328-pinctrl"
"rockchip,rk3368-pinctrl", "rockchip,rk3399-pinctrl"
- rockchip,grf: phandle referencing a syscon providing the
"general register files"

70
drivers/pinctrl/pinctrl-rockchip.c
View File

@ -534,6 +534,49 @@ static const struct pinctrl_ops rockchip_pctrl_ops = {
* Hardware access
*/
static const struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
{
.num = 2,
.pin = 12,
.reg = 0x24,
.bit = 8,
.mask = 0x3
}, {
.num = 2,
.pin = 15,
.reg = 0x28,
.bit = 0,
.mask = 0x7
}, {
.num = 2,
.pin = 23,
.reg = 0x30,
.bit = 14,
.mask = 0x3
},
};
static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
u8 *bit, int *mask)
{
const struct rockchip_mux_recalced_data *data = NULL;
int i;
for (i = 0; i < ARRAY_SIZE(rk3328_mux_recalced_data); i++)
if (rk3328_mux_recalced_data[i].num == bank_num &&
rk3328_mux_recalced_data[i].pin == pin) {
data = &rk3328_mux_recalced_data[i];
break;
}
if (!data)
return;
*reg = data->reg;
*mask = data->mask;
*bit = data->bit;
}
static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
{
struct rockchip_pinctrl *info = bank->drvdata;
@ -2722,6 +2765,31 @@ static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
.drv_calc_reg = rk3288_calc_drv_reg_and_bit,
};
static struct rockchip_pin_bank rk3328_pin_banks[] = {
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
0),
PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",
IOMUX_WIDTH_3BIT,
IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
0,
0),
};
static struct rockchip_pin_ctrl rk3328_pin_ctrl = {
.pin_banks = rk3328_pin_banks,
.nr_banks = ARRAY_SIZE(rk3328_pin_banks),
.label = "RK3328-GPIO",
.type = RK3288,
.grf_mux_offset = 0x0,
.pull_calc_reg = rk3228_calc_pull_reg_and_bit,
.drv_calc_reg = rk3228_calc_drv_reg_and_bit,
.iomux_recalc = rk3328_recalc_mux,
};
static struct rockchip_pin_bank rk3368_pin_banks[] = {
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
@ -2827,6 +2895,8 @@ static const struct of_device_id rockchip_pinctrl_dt_match[] = {
.data = (void *)&rk3228_pin_ctrl },
{ .compatible = "rockchip,rk3288-pinctrl",
.data = (void *)&rk3288_pin_ctrl },
{ .compatible = "rockchip,rk3328-pinctrl",
.data = (void *)&rk3328_pin_ctrl },
{ .compatible = "rockchip,rk3368-pinctrl",
.data = (void *)&rk3368_pin_ctrl },
{ .compatible = "rockchip,rk3399-pinctrl",