[PATCH 2/4] pinctrl: rockchip: Add iomux-route switching support for rk3228

David Wu
2017-05-25T13:10:30Z

There are 9 IP blocks pin routes need to be switched, that are
pwm-0, pwm-1, pwm-2, pwm-3, sdio, spi, emmc, uart2, uart1.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
drivers/pinctrl/pinctrl-rockchip.c | 176 ++++++++++++++++++++++++++++++++++++-
1 file changed, 172 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index f5dd1c3..be4c16e 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -187,6 +187,20 @@ struct rockchip_pin_bank {
}, \
}

+#define PIN_BANK_ROUTE(id, pins, label, route) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .route_mask = route, \
+ .iomux = { \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ }, \
+ }
+
#define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \
{ \
.bank_num = id, \
@@ -605,6 +619,159 @@ static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
*bit = data->bit;
}

+static const struct rockchip_mux_route_data rk3228_mux_route_data[] = {
+ {
+ /* pwm0-0 */
+ .bank = 0,
+ .pin = 26,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16),
+ }, {
+ /* pwm0-1 */
+ .bank = 3,
+ .pin = 21,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16) | BIT(0),
+ }, {
+ /* pwm1-0 */
+ .bank = 0,
+ .pin = 27,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 1),
+ }, {
+ /* pwm1-1 */
+ .bank = 0,
+ .pin = 30,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 1) | BIT(1),
+ }, {
+ /* pwm2-0 */
+ .bank = 0,
+ .pin = 28,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 2),
+ }, {
+ /* pwm2-1 */
+ .bank = 1,
+ .pin = 12,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 2) | BIT(2),
+ }, {
+ /* pwm3-0 */
+ .bank = 3,
+ .pin = 26,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 3),
+ }, {
+ /* pwm3-1 */
+ .bank = 1,
+ .pin = 11,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 3) | BIT(3),
+ }, {
+ /* sdio-0_d0 */
+ .bank = 1,
+ .pin = 1,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 4),
+ }, {
+ /* sdio-1_d0 */
+ .bank = 3,
+ .pin = 2,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 4) | BIT(4),
+ }, {
+ /* spi-0_rx */
+ .bank = 0,
+ .pin = 13,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 5),
+ }, {
+ /* spi-1_rx */
+ .bank = 2,
+ .pin = 0,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 5) | BIT(5),
+ }, {
+ /* emmc-0_cmd */
+ .bank = 1,
+ .pin = 22,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 7),
+ }, {
+ /* emmc-1_cmd */
+ .bank = 2,
+ .pin = 4,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 7) | BIT(7),
+ }, {
+ /* uart2-0_rx */
+ .bank = 1,
+ .pin = 19,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 8),
+ }, {
+ /* uart2-1_rx */
+ .bank = 1,
+ .pin = 10,
+ .func = 2,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 8) | BIT(8),
+ }, {
+ /* uart1-0_rx */
+ .bank = 1,
+ .pin = 10,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 11),
+ }, {
+ /* uart1-1_rx */
+ .bank = 3,
+ .pin = 13,
+ .func = 1,
+ .route_offset = 0x50,
+ .route_val = BIT(16 + 11) | BIT(11),
+ },
+};
+
+static bool rk3228_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(rk3228_mux_route_data); i++)
+ if ((rk3228_mux_route_data[i].bank == bank_num) &&
+ (rk3228_mux_route_data[i].pin == pin) &&
+ (rk3228_mux_route_data[i].func == mux)) {
+ data = &rk3228_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;
@@ -2852,10 +3019,10 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
};

static struct rockchip_pin_bank rk3228_pin_banks[] = {
- PIN_BANK(0, 32, "gpio0"),
- PIN_BANK(1, 32, "gpio1"),
- PIN_BANK(2, 32, "gpio2"),
- PIN_BANK(3, 32, "gpio3"),
+ PIN_BANK_ROUTE(0, 32, "gpio0", 0x5c002000),
+ PIN_BANK_ROUTE(1, 32, "gpio1", 0x00483c02),
+ PIN_BANK_ROUTE(2, 32, "gpio2", 0x00000011),
+ PIN_BANK_ROUTE(3, 32, "gpio3", 0x04202004),
};

static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
@@ -2866,6 +3033,7 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
.grf_mux_offset = 0x0,
.pull_calc_reg = rk3228_calc_pull_reg_and_bit,
.drv_calc_reg = rk3228_calc_drv_reg_and_bit,
+ .iomux_route = rk3228_set_mux_route,
};

static struct rockchip_pin_bank rk3288_pin_banks[] = {
--
1.9.1