michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: display: st7789v: use gpio_dt_spec

Browse source 
Simplify driver implementation by using gpio_dt_spec.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas 2022-01-31 12:31:49 +01:00 • committed by Anas Nashif
commit 069bf6be44
1 changed files with 19 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

49
drivers/display/display_st7789v.c
View file

@ -23,11 +23,6 @@
#include <logging/log.h>
LOG_MODULE_REGISTER(display_st7789v);
#define ST7789V_CMD_DATA_PIN DT_INST_GPIO_PIN(0, cmd_data_gpios)
#define ST7789V_CMD_DATA_FLAGS DT_INST_GPIO_FLAGS(0, cmd_data_gpios)
#define ST7789V_RESET_PIN DT_INST_GPIO_PIN(0, reset_gpios)
#define ST7789V_RESET_FLAGS DT_INST_GPIO_FLAGS(0, reset_gpios)
static uint8_t st7789v_porch_param[] = DT_INST_PROP(0, porch_param);
static uint8_t st7789v_cmd2en_param[] = DT_INST_PROP(0, cmd2en_param);
static uint8_t st7789v_pwctrl1_param[] = DT_INST_PROP(0, pwctrl1_param);
@ -38,14 +33,13 @@ static uint8_t st7789v_rgb_param[] = DT_INST_PROP(0, rgb_param);
struct st7789v_config {
struct spi_dt_spec bus;
struct gpio_dt_spec cmd_data_gpio;
#if DT_INST_NODE_HAS_PROP(0, reset_gpios)
struct gpio_dt_spec reset_gpio;
#endif
};
struct st7789v_data {
#if DT_INST_NODE_HAS_PROP(0, reset_gpios)
const struct device *reset_gpio;
#endif
const struct device *cmd_data_gpio;
uint16_t height;
uint16_t width;
uint16_t x_offset;
@ -69,9 +63,9 @@ static void st7789v_set_lcd_margins(const struct device *dev,
static void st7789v_set_cmd(const struct device *dev, int is_cmd)
{
struct st7789v_data *data = dev->data;
const struct st7789v_config *config = dev->config;
gpio_pin_set(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN, is_cmd);
gpio_pin_set_dt(&config->cmd_data_gpio, is_cmd);
}
static void st7789v_transmit(const struct device *dev, uint8_t cmd,
@ -102,13 +96,14 @@ static void st7789v_exit_sleep(const struct device *dev)
static void st7789v_reset_display(const struct device *dev)
{
LOG_DBG("Resetting display");
#if DT_INST_NODE_HAS_PROP(0, reset_gpios)
struct st7789v_data *data = dev->data;
const struct st7789v_config *config = dev->config;
k_sleep(K_MSEC(1));
gpio_pin_set(data->reset_gpio, ST7789V_RESET_PIN, 1);
gpio_pin_set_dt(&config->reset_gpio, 1);
k_sleep(K_MSEC(6));
gpio_pin_set(data->reset_gpio, ST7789V_RESET_PIN, 0);
gpio_pin_set_dt(&config->reset_gpio, 0);
k_sleep(K_MSEC(20));
#else
st7789v_transmit(dev, ST7789V_CMD_SW_RESET, NULL, 0);
@ -338,7 +333,6 @@ static void st7789v_lcd_init(const struct device *dev)
static int st7789v_init(const struct device *dev)
{
const struct st7789v_config *config = dev->config;
struct st7789v_data *data = dev->data;
if (!spi_is_ready(&config->bus)) {
LOG_ERR("SPI device not ready");
@ -346,28 +340,23 @@ static int st7789v_init(const struct device *dev)
}
#if DT_INST_NODE_HAS_PROP(0, reset_gpios)
data->reset_gpio = device_get_binding(
DT_INST_GPIO_LABEL(0, reset_gpios));
if (data->reset_gpio == NULL) {
LOG_ERR("Could not get GPIO port for display reset");
return -EPERM;
if (!device_is_ready(config->reset_gpio.port)) {
LOG_ERR("Reset GPIO device not ready");
return -ENODEV;
}
if (gpio_pin_configure(data->reset_gpio, ST7789V_RESET_PIN,
GPIO_OUTPUT_INACTIVE | ST7789V_RESET_FLAGS)) {
if (gpio_pin_configure_dt(&config->reset_gpio, GPIO_OUTPUT_INACTIVE)) {
LOG_ERR("Couldn't configure reset pin");
return -EIO;
}
#endif
data->cmd_data_gpio = device_get_binding(
DT_INST_GPIO_LABEL(0, cmd_data_gpios));
if (data->cmd_data_gpio == NULL) {
LOG_ERR("Could not get GPIO port for cmd/DATA port");
return -EPERM;
if (!device_is_ready(config->cmd_data_gpio.port)) {
LOG_ERR("Reset GPIO device not ready");
return -ENODEV;
}
if (gpio_pin_configure(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN,
GPIO_OUTPUT | ST7789V_CMD_DATA_FLAGS)) {
if (gpio_pin_configure_dt(&config->cmd_data_gpio, GPIO_OUTPUT)) {
LOG_ERR("Couldn't configure cmd/DATA pin");
return -EIO;
}