[PATCH 4/4] pinctrl: rockchip: Add iomux-route switching support for rk3399

David Wu
2017-05-25T13:09:41Z

There are 2 IP blocks pin routes need to be switched, that are
uart2dbg, pcie_clkreq.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
drivers/pinctrl/pinctrl-rockchip.c | 140 +++++++++++++++++++++++++++++++++----
1 file changed, 126 insertions(+), 14 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 6eab4581..44c5aff3 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -248,6 +248,27 @@ struct rockchip_pin_bank {
}, \
}

+#define PIN_BANK_DRV_FLAGS_ROUTE(id, pins, label, route, type0, type1, \
+ type2, type3) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .route_mask = route, \
+ .iomux = { \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ }, \
+ .drv = { \
+ { .drv_type = type0, .offset = -1 }, \
+ { .drv_type = type1, .offset = -1 }, \
+ { .drv_type = type2, .offset = -1 }, \
+ { .drv_type = type3, .offset = -1 }, \
+ }, \
+ }
+
#define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1, \
drv2, drv3, pull0, pull1, \
pull2, pull3) \
@@ -273,6 +294,32 @@ struct rockchip_pin_bank {
.pull_type[3] = pull3, \
}

+#define PIN_BANK_DRV_FLAGS_PULL_FLAGS_ROUTE(id, pins, label, route, \
+ drv0, drv1, drv2, drv3, \
+ pull0, pull1, pull2, pull3) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .route_mask = route, \
+ .iomux = { \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ }, \
+ .drv = { \
+ { .drv_type = drv0, .offset = -1 }, \
+ { .drv_type = drv1, .offset = -1 }, \
+ { .drv_type = drv2, .offset = -1 }, \
+ { .drv_type = drv3, .offset = -1 }, \
+ }, \
+ .pull_type[0] = pull0, \
+ .pull_type[1] = pull1, \
+ .pull_type[2] = pull2, \
+ .pull_type[3] = pull3, \
+ }
+
#define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \
iom2, iom3, drv0, drv1, drv2, \
drv3, offset0, offset1, \
@@ -891,6 +938,68 @@ static bool rk3328_set_mux_route(u8 bank_num, int pin, int mux,
return true;
}

+static const struct rockchip_mux_route_data rk3399_mux_route_data[] = {
+ {
+ /* uart2dbga_rx */
+ .bank = 4,
+ .pin = 8,
+ .func = 2,
+ .route_offset = 0xe21c,
+ .route_val = BIT(16 + 10) | BIT(16 + 11),
+ }, {
+ /* uart2dbgb_rx */
+ .bank = 4,
+ .pin = 16,
+ .func = 2,
+ .route_offset = 0xe21c,
+ .route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(10),
+ }, {
+ /* uart2dbgc_rx */
+ .bank = 4,
+ .pin = 19,
+ .func = 1,
+ .route_offset = 0xe21c,
+ .route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(11),
+ }, {
+ /* pcie_clkreqn */
+ .bank = 2,
+ .pin = 26,
+ .func = 2,
+ .route_offset = 0xe21c,
+ .route_val = BIT(16 + 14),
+ }, {
+ /* pcie_clkreqnb */
+ .bank = 4,
+ .pin = 24,
+ .func = 1,
+ .route_offset = 0xe21c,
+ .route_val = BIT(16 + 14) | BIT(14),
+ },
+};
+
+static bool rk3399_set_mux_route(u8 bank_num, int pin, int mux,
+ u32 *reg, u32 *value)
+{
+ const struct rockchip_mux_route_data *data = NULL;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(rk3399_mux_route_data); i++)
+ if ((rk3399_mux_route_data[i].bank == bank_num) &&
+ (rk3399_mux_route_data[i].pin == pin) &&
+ (rk3399_mux_route_data[i].func == mux)) {
+ data = &rk3399_mux_route_data[i];
+ break;
+ }
+
+ if (!data)
+ return false;
+
+ *reg = data->route_offset;
+ *value = data->route_val;
+
+ return true;
+}
+
static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
{
struct rockchip_pinctrl *info = bank->drvdata;
@@ -3279,25 +3388,27 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
0x30,
0x38
),
- PIN_BANK_DRV_FLAGS_PULL_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_ONLY,
- DRV_TYPE_IO_1V8_ONLY,
- PULL_TYPE_IO_DEFAULT,
- PULL_TYPE_IO_DEFAULT,
- PULL_TYPE_IO_1V8_ONLY,
- PULL_TYPE_IO_1V8_ONLY
- ),
+ PIN_BANK_DRV_FLAGS_PULL_FLAGS_ROUTE(2, 32, "gpio2", 0x04000000,
+ DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_ONLY,
+ DRV_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_DEFAULT,
+ PULL_TYPE_IO_DEFAULT,
+ PULL_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_1V8_ONLY
+ ),
PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
DRV_TYPE_IO_3V3_ONLY,
DRV_TYPE_IO_3V3_ONLY,
DRV_TYPE_IO_1V8_OR_3V0
),
- PIN_BANK_DRV_FLAGS(4, 32, "gpio4", DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_3V0_AUTO,
- DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_OR_3V0
- ),
+ PIN_BANK_DRV_FLAGS_ROUTE(4, 32, "gpio4", 0x01090100,
+ DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_3V0_AUTO,
+ DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_OR_3V0
+ ),
};

static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
@@ -3311,6 +3422,7 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
.pmu_drv_offset = 0x80,
.pull_calc_reg = rk3399_calc_pull_reg_and_bit,
.drv_calc_reg = rk3399_calc_drv_reg_and_bit,
+ .iomux_route = rk3399_set_mux_route,
};

static const struct of_device_id rockchip_pinctrl_dt_match[] = {
--
1.9.1