drivers: misc: grove_lcd_rgb: cleanup driver
- Cleanup list of includes - Remove unused structs/definitions - Make init function static (is called by system init) - Make config/data naming and access consistent - Remove redundant zero initialization of data Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas
Marti Bolivar
parent
825655f0dc
commit
0bc64307d4
2 changed files with 93 additions and 127 deletions
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@ -7,40 +7,27 @@
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#define DT_DRV_COMPAT seeed_grove_lcd_rgb
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#include <errno.h>
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#include <kernel.h>
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#include <init.h>
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#include <stdbool.h>
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#include <device.h>
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#include <drivers/i2c.h>
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#include <drivers/misc/grove_lcd/grove_lcd.h>
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#include <kernel.h>
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#include <sys/util.h>
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#define LOG_LEVEL CONFIG_DISPLAY_LOG_LEVEL
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#include <logging/log.h>
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LOG_MODULE_REGISTER(grove_lcd);
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LOG_MODULE_REGISTER(grove_lcd, CONFIG_DISPLAY_LOG_LEVEL);
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#define GROVE_RGB_BACKLIGHT_ADDR (0x62)
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struct command {
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uint8_t control;
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uint8_t data;
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};
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struct glcd_data {
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uint8_t input_set;
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uint8_t display_switch;
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uint8_t function;
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};
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struct glcd_driver {
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struct glcd_config {
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struct i2c_dt_spec bus;
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};
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#define ON 0x1
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#define OFF 0x0
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/********************************************
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* LCD FUNCTIONS
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*******************************************/
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@ -67,7 +54,6 @@ struct glcd_driver {
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* RGB FUNCTIONS
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*******************************************/
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#define REGISTER_POWER 0x08
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#define REGISTER_R 0x04
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#define REGISTER_G 0x03
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#define REGISTER_B 0x02
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@ -93,24 +79,22 @@ static void rgb_reg_set(const struct device *i2c, uint8_t addr, uint8_t dta)
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/********************************************
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* PUBLIC FUNCTIONS
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*******************************************/
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void glcd_print(const struct device *port, char *data, uint32_t size)
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void glcd_print(const struct device *dev, char *data, uint32_t size)
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{
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const struct glcd_driver * const rom = (const struct glcd_driver *)
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port->config;
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const struct glcd_config *config = dev->config;
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uint8_t buf[] = { GLCD_CMD_SET_CGRAM_ADDR, 0 };
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int i;
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for (i = 0; i < size; i++) {
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buf[1] = data[i];
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i2c_write_dt(&rom->bus, buf, sizeof(buf));
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i2c_write_dt(&config->bus, buf, sizeof(buf));
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}
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}
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void glcd_cursor_pos_set(const struct device *port, uint8_t col, uint8_t row)
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void glcd_cursor_pos_set(const struct device *dev, uint8_t col, uint8_t row)
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{
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const struct glcd_driver * const rom = (const struct glcd_driver *)
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port->config;
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const struct glcd_config *config = dev->config;
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unsigned char data[2];
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@ -123,129 +107,121 @@ void glcd_cursor_pos_set(const struct device *port, uint8_t col, uint8_t row)
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data[0] = GLCD_CMD_SET_DDRAM_ADDR;
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data[1] = col;
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i2c_write_dt(&rom->bus, data, 2);
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i2c_write_dt(&config->bus, data, 2);
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}
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void glcd_clear(const struct device *port)
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void glcd_clear(const struct device *dev)
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{
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const struct glcd_driver * const rom = (const struct glcd_driver *)
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port->config;
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const struct glcd_config *config = dev->config;
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uint8_t clear[] = { 0, GLCD_CMD_SCREEN_CLEAR };
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i2c_write_dt(&rom->bus, clear, sizeof(clear));
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i2c_write_dt(&config->bus, clear, sizeof(clear));
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LOG_DBG("clear, delay 20 ms");
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k_sleep(K_MSEC(20));
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}
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void glcd_display_state_set(const struct device *port, uint8_t opt)
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void glcd_display_state_set(const struct device *dev, uint8_t opt)
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{
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const struct glcd_driver * const rom = (const struct glcd_driver *)
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port->config;
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struct glcd_data *dev = port->data;
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uint8_t data[] = { 0, 0 };
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const struct glcd_config *config = dev->config;
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struct glcd_data *data = dev->data;
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uint8_t buf[] = { 0, 0 };
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dev->display_switch = opt;
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data[1] = (opt | GLCD_CMD_DISPLAY_SWITCH);
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data->display_switch = opt;
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buf[1] = (opt | GLCD_CMD_DISPLAY_SWITCH);
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i2c_write_dt(&rom->bus, data, sizeof(data));
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i2c_write_dt(&config->bus, buf, sizeof(buf));
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LOG_DBG("set display_state options, delay 5 ms");
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k_sleep(K_MSEC(5));
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}
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uint8_t glcd_display_state_get(const struct device *port)
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uint8_t glcd_display_state_get(const struct device *dev)
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{
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struct glcd_data *dev = port->data;
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struct glcd_data *data = dev->data;
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return dev->display_switch;
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return data->display_switch;
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}
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void glcd_input_state_set(const struct device *port, uint8_t opt)
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void glcd_input_state_set(const struct device *dev, uint8_t opt)
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{
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const struct glcd_driver * const rom = port->config;
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struct glcd_data *dev = port->data;
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uint8_t data[] = { 0, 0 };
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const struct glcd_config *config = dev->config;
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struct glcd_data *data = dev->data;
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uint8_t buf[] = { 0, 0 };
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dev->input_set = opt;
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data[1] = (opt | GLCD_CMD_INPUT_SET);
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data->input_set = opt;
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buf[1] = (opt | GLCD_CMD_INPUT_SET);
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i2c_write_dt(&rom->bus, &dev->input_set, sizeof(dev->input_set));
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i2c_write_dt(&config->bus, buf, sizeof(buf));
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LOG_DBG("set the input_set, no delay");
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}
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uint8_t glcd_input_state_get(const struct device *port)
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uint8_t glcd_input_state_get(const struct device *dev)
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{
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struct glcd_data *dev = port->data;
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struct glcd_data *data = dev->data;
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return dev->input_set;
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return data->input_set;
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}
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void glcd_color_select(const struct device *port, uint8_t color)
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void glcd_color_select(const struct device *dev, uint8_t color)
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{
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if (color > 3) {
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LOG_WRN("selected color is too high a value");
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return;
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}
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glcd_color_set(port, color_define[color][0],
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color_define[color][1],
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color_define[color][2]);
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glcd_color_set(dev, color_define[color][0], color_define[color][1],
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color_define[color][2]);
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}
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void glcd_color_set(const struct device *port, uint8_t r, uint8_t g,
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void glcd_color_set(const struct device *dev, uint8_t r, uint8_t g,
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uint8_t b)
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{
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const struct glcd_driver * const rom = port->config;
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const struct glcd_config *config = dev->config;
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rgb_reg_set(rom->bus.bus, REGISTER_R, r);
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rgb_reg_set(rom->bus.bus, REGISTER_G, g);
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rgb_reg_set(rom->bus.bus, REGISTER_B, b);
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rgb_reg_set(config->bus.bus, REGISTER_R, r);
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rgb_reg_set(config->bus.bus, REGISTER_G, g);
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rgb_reg_set(config->bus.bus, REGISTER_B, b);
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}
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void glcd_function_set(const struct device *port, uint8_t opt)
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void glcd_function_set(const struct device *dev, uint8_t opt)
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{
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const struct glcd_driver * const rom = port->config;
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struct glcd_data *dev = port->data;
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uint8_t data[] = { 0, 0 };
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const struct glcd_config *config = dev->config;
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struct glcd_data *data = dev->data;
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uint8_t buf[] = { 0, 0 };
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dev->function = opt;
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data[1] = (opt | GLCD_CMD_FUNCTION_SET);
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data->function = opt;
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buf[1] = (opt | GLCD_CMD_FUNCTION_SET);
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i2c_write_dt(&rom->bus, data, sizeof(data));
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i2c_write_dt(&config->bus, buf, sizeof(buf));
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LOG_DBG("set function options, delay 5 ms");
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k_sleep(K_MSEC(5));
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}
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uint8_t glcd_function_get(const struct device *port)
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uint8_t glcd_function_get(const struct device *dev)
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{
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struct glcd_data *dev = port->data;
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struct glcd_data *data = dev->data;
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return dev->function;
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return data->function;
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}
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int glcd_initialize(const struct device *port)
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static int glcd_initialize(const struct device *dev)
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{
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const struct glcd_driver * const rom = port->config;
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struct glcd_data *dev = port->data;
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const struct glcd_config *config = dev->config;
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uint8_t cmd;
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LOG_DBG("initialize called");
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dev->input_set = 0U;
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dev->display_switch = 0U;
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dev->function = 0U;
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if (!device_is_ready(rom->bus.bus)) {
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if (!device_is_ready(config->bus.bus)) {
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return -ENODEV;
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}
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@ -273,46 +249,42 @@ int glcd_initialize(const struct device *port)
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/* Configure everything for the display function first */
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cmd = GLCD_CMD_FUNCTION_SET | GLCD_FS_ROWS_2;
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glcd_function_set(port, cmd);
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glcd_function_set(dev, cmd);
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/* turn the display on - by default no cursor and no blinking */
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cmd = GLCD_DS_DISPLAY_ON | GLCD_DS_CURSOR_OFF | GLCD_DS_BLINK_OFF;
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glcd_display_state_set(port, cmd);
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glcd_display_state_set(dev, cmd);
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/* Clear the screen */
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glcd_clear(port);
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glcd_clear(dev);
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/* Initialize to the default text direction for romance languages */
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cmd = GLCD_IS_ENTRY_LEFT | GLCD_IS_SHIFT_DECREMENT;
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glcd_input_state_set(port, cmd);
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glcd_input_state_set(dev, cmd);
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/* Now power on the background RGB control */
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LOG_INF("configuring the RGB background");
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rgb_reg_set(rom->bus.bus, 0x00, 0x00);
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rgb_reg_set(rom->bus.bus, 0x01, 0x05);
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rgb_reg_set(rom->bus.bus, 0x08, 0xAA);
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rgb_reg_set(config->bus.bus, 0x00, 0x00);
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rgb_reg_set(config->bus.bus, 0x01, 0x05);
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rgb_reg_set(config->bus.bus, 0x08, 0xAA);
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/* Now set the background color to white */
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LOG_DBG("background set to white");
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rgb_reg_set(rom->bus.bus, REGISTER_R, color_define[GROVE_RGB_WHITE][0]);
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rgb_reg_set(rom->bus.bus, REGISTER_G, color_define[GROVE_RGB_WHITE][1]);
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rgb_reg_set(rom->bus.bus, REGISTER_B, color_define[GROVE_RGB_WHITE][2]);
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rgb_reg_set(config->bus.bus, REGISTER_R, color_define[GROVE_RGB_WHITE][0]);
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rgb_reg_set(config->bus.bus, REGISTER_G, color_define[GROVE_RGB_WHITE][1]);
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rgb_reg_set(config->bus.bus, REGISTER_B, color_define[GROVE_RGB_WHITE][2]);
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return 0;
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}
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static const struct glcd_driver grove_lcd_config = {
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static const struct glcd_config grove_lcd_config = {
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.bus = I2C_DT_SPEC_INST_GET(0),
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};
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static struct glcd_data grove_lcd_driver = {
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.input_set = 0,
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.display_switch = 0,
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.function = 0,
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};
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static struct glcd_data grove_lcd_data;
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DEVICE_DT_INST_DEFINE(0, glcd_initialize, NULL, &grove_lcd_driver,
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DEVICE_DT_INST_DEFINE(0, glcd_initialize, NULL, &grove_lcd_data,
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&grove_lcd_config, POST_KERNEL,
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CONFIG_KERNEL_INIT_PRIORITY_DEVICE, NULL);
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