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drivers: display: st7735r: added inversion-on property

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Add 'inversion-on' property to st7735r.
Issue INVON(21h) command on initializing if inversion-on was enabled.
As a result of this command, the display color is inverted.
Otherwise, INVOFF(20h) will be issued.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
This commit is contained in:
TOKITA Hiroshi 2022-04-13 09:42:50 +09:00 • committed by Marti Bolivar
commit 7e4cf8308d
2 changed files with 13 additions and 1 deletions
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8
drivers/display/display_st7735r.c
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@ -50,6 +50,7 @@ struct st7735r_config {
uint8_t frmctr3[6];
uint8_t gamctrp1[16];
uint8_t gamctrn1[16];
bool inversion_on;
};
struct st7735r_data {
@ -377,7 +378,11 @@ static int st7735r_lcd_init(const struct device *dev)
return ret;
}
ret = st7735r_transmit(dev, ST7735R_CMD_INV_OFF, NULL, 0);
if (config->inversion_on) {
ret = st7735r_transmit(dev, ST7735R_CMD_INV_ON, NULL, 0);
} else {
ret = st7735r_transmit(dev, ST7735R_CMD_INV_OFF, NULL, 0);
}
if (ret < 0) {
return ret;
}
@ -545,6 +550,7 @@ static const struct display_driver_api st7735r_api = {
.frmctr3 = DT_INST_PROP(inst, frmctr3), \
.gamctrp1 = DT_INST_PROP(inst, gamctrp1), \
.gamctrn1 = DT_INST_PROP(inst, gamctrn1), \
.inversion_on = DT_INST_PROP(inst, inversion_on), \
}; \
\
static struct st7735r_data st7735r_data_ ## inst = { \