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drivers: st7789v: convert to new GPIO API

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Convert ST7789V display driver to new GPIO API.

Signed-off-by: Johann Fischer <j.fischer@phytec.de>
This commit is contained in:
Johann Fischer 2020-01-23 18:17:05 +01:00 • committed by Carles Cufí
commit c671b75e13
4 changed files with 23 additions and 12 deletions
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4
boards/shields/st7789v_generic/st7789v_tl019fqv01.overlay
View file

@ -13,8 +13,8 @@
label = "ST7789V";
spi-max-frequency = <20000000>;
reg = <0>;
cmd-data-gpios = <&arduino_header 15 0>; /* D9 */
reset-gpios = <&arduino_header 14 0>; /* D8 */
cmd-data-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>; /* D8 */
width = <320>;
height = <170>;
x-offset = <0>;

4
boards/shields/st7789v_generic/st7789v_waveshare_240x240.overlay
View file

@ -14,8 +14,8 @@
label = "ST7789V";
spi-max-frequency = <20000000>;
reg = <0>;
cmd-data-gpios = <&arduino_header 15 0>; /* D9 */
reset-gpios = <&arduino_header 14 0>; /* D8 */
cmd-data-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>; /* D8 */
width = <240>;
height = <240>;
x-offset = <0>;

17
drivers/display/display_st7789v.c
View file

@ -21,7 +21,9 @@ LOG_MODULE_REGISTER(display_st7789v);
#define ST7789V_CS_PIN DT_INST_0_SITRONIX_ST7789V_CS_GPIOS_PIN
#define ST7789V_CMD_DATA_PIN DT_INST_0_SITRONIX_ST7789V_CMD_DATA_GPIOS_PIN
#define ST7789V_CMD_DATA_FLAGS DT_INST_0_SITRONIX_ST7789V_CMD_DATA_GPIOS_FLAGS
#define ST7789V_RESET_PIN DT_INST_0_SITRONIX_ST7789V_RESET_GPIOS_PIN
#define ST7789V_RESET_FLAGS DT_INST_0_SITRONIX_ST7789V_RESET_GPIOS_FLAGS
static u8_t st7789v_porch_param[] = DT_INST_0_SITRONIX_ST7789V_PORCH_PARAM;
static u8_t st7789v_cmd2en_param[] = DT_INST_0_SITRONIX_ST7789V_CMD2EN_PARAM;
@ -64,7 +66,7 @@ static void st7789v_set_lcd_margins(struct st7789v_data *data,
static void st7789v_set_cmd(struct st7789v_data *data, int is_cmd)
{
gpio_pin_write(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN, !is_cmd);
gpio_pin_set(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN, is_cmd);
}
static void st7789v_transmit(struct st7789v_data *data, u8_t cmd,
@ -73,13 +75,13 @@ static void st7789v_transmit(struct st7789v_data *data, u8_t cmd,
struct spi_buf tx_buf = { .buf = &cmd, .len = 1 };
struct spi_buf_set tx_bufs = { .buffers = &tx_buf, .count = 1 };
st7789v_set_cmd(data, true);
st7789v_set_cmd(data, 1);
spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
if (tx_data != NULL) {
tx_buf.buf = tx_data;
tx_buf.len = tx_count;
st7789v_set_cmd(data, false);
st7789v_set_cmd(data, 0);
spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
}
}
@ -94,11 +96,10 @@ static void st7789v_reset_display(struct st7789v_data *data)
{
LOG_DBG("Resetting display");
#ifdef DT_INST_0_SITRONIX_ST7789V_RESET_GPIOS_CONTROLLER
gpio_pin_write(data->reset_gpio, ST7789V_RESET_PIN, 1);
k_sleep(K_MSEC(1));
gpio_pin_write(data->reset_gpio, ST7789V_RESET_PIN, 0);
gpio_pin_set(data->reset_gpio, ST7789V_RESET_PIN, 1);
k_sleep(K_MSEC(6));
gpio_pin_write(data->reset_gpio, ST7789V_RESET_PIN, 1);
gpio_pin_set(data->reset_gpio, ST7789V_RESET_PIN, 0);
k_sleep(K_MSEC(20));
#else
st7789v_transmit(p_st7789v, ST7789V_CMD_SW_RESET, NULL, 0);
@ -360,7 +361,7 @@ static int st7789v_init(struct device *dev)
}
if (gpio_pin_configure(data->reset_gpio, ST7789V_RESET_PIN,
GPIO_DIR_OUT)) {
GPIO_OUTPUT_INACTIVE | ST7789V_RESET_FLAGS)) {
LOG_ERR("Couldn't configure reset pin");
return -EIO;
}
@ -373,7 +374,7 @@ static int st7789v_init(struct device *dev)
return -EPERM;
}
if (gpio_pin_configure(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN,
GPIO_DIR_OUT)) {
GPIO_OUTPUT | ST7789V_CMD_DATA_FLAGS)) {
LOG_ERR("Couldn't configure cmd/DATA pin");
return -EIO;
}

10
dts/bindings/display/sitronix,st7789v.yaml
View file

@ -12,10 +12,20 @@ properties:
reset-gpios:
type: phandle-array
required: true
description: RESET pin.
The RESET pin of ST7789V is active low.
If connected directly the MCU pin should be configured
as active low.
cmd-data-gpios:
type: phandle-array
required: true
description: D/CX pin.
The D/CX pin of ST7789V is active low (transmission command byte).
If connected directly the MCU pin should be configured
as active low.
height:
type: int