drivers: display_st7789v: obtain panel settings and parameters from DT
Obtain panel settings and parameters from DT. Signed-off-by: Johann Fischer <j.fischer@phytec.de>
This commit is contained in:
Johann Fischer
Anas Nashif
parent
885d80f2f2
commit
f6807df469
3 changed files with 159 additions and 14 deletions
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@ -2,6 +2,7 @@
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* Copyright (c) 2017 Jan Van Winkel <jan.van_winkel@dxplore.eu>
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* Copyright (c) 2019 Nordic Semiconductor ASA
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* Copyright (c) 2019 Marc Reilly
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* Copyright (c) 2019 PHYTEC Messtechnik GmbH
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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@ -22,6 +23,14 @@ LOG_MODULE_REGISTER(display_st7789v);
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#define ST7789V_CMD_DATA_PIN DT_INST_0_SITRONIX_ST7789V_CMD_DATA_GPIOS_PIN
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#define ST7789V_RESET_PIN DT_INST_0_SITRONIX_ST7789V_RESET_GPIOS_PIN
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static u8_t st7789v_porch_param[] = DT_INST_0_SITRONIX_ST7789V_PORCH_PARAM;
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static u8_t st7789v_cmd2en_param[] = DT_INST_0_SITRONIX_ST7789V_CMD2EN_PARAM;
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static u8_t st7789v_pwctrl1_param[] = DT_INST_0_SITRONIX_ST7789V_PWCTRL1_PARAM;
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static u8_t st7789v_pvgam_param[] = DT_INST_0_SITRONIX_ST7789V_PVGAM_PARAM;
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static u8_t st7789v_nvgam_param[] = DT_INST_0_SITRONIX_ST7789V_NVGAM_PARAM;
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static u8_t st7789v_ram_param[] = DT_INST_0_SITRONIX_ST7789V_RAM_PARAM;
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static u8_t st7789v_rgb_param[] = DT_INST_0_SITRONIX_ST7789V_RGB_PARAM;
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struct st7789v_data {
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struct device *spi_dev;
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struct spi_config spi_config;
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@ -46,7 +55,7 @@ struct st7789v_data {
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#define ST7789V_PIXEL_SIZE 3u
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#endif
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void st7789v_set_lcd_margins(struct st7789v_data *data,
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static void st7789v_set_lcd_margins(struct st7789v_data *data,
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u16_t x_offset, u16_t y_offset)
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{
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data->x_offset = x_offset;
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@ -58,7 +67,7 @@ static void st7789v_set_cmd(struct st7789v_data *data, int is_cmd)
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gpio_pin_write(data->cmd_data_gpio, ST7789V_CMD_DATA_PIN, !is_cmd);
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}
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void st7789v_transmit(struct st7789v_data *data, u8_t cmd,
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static void st7789v_transmit(struct st7789v_data *data, u8_t cmd,
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u8_t *tx_data, size_t tx_count)
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{
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struct spi_buf tx_buf = { .buf = &cmd, .len = 1 };
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@ -247,6 +256,76 @@ static int st7789v_set_orientation(const struct device *dev,
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return -ENOTSUP;
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}
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static void st7789v_lcd_init(struct st7789v_data *p_st7789v)
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{
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u8_t tmp;
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st7789v_set_lcd_margins(p_st7789v, 0, 0);
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st7789v_transmit(p_st7789v, ST7789V_CMD_PORCTRL, st7789v_porch_param,
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sizeof(st7789v_porch_param));
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st7789v_transmit(p_st7789v, ST7789V_CMD_CMD2EN, st7789v_cmd2en_param,
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sizeof(st7789v_cmd2en_param));
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/* Digital Gamma Enable, default disabled */
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tmp = 0x00;
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st7789v_transmit(p_st7789v, ST7789V_CMD_DGMEN, &tmp, 1);
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/* Frame Rate Control in Normal Mode, default value */
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tmp = 0x0f;
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st7789v_transmit(p_st7789v, ST7789V_CMD_FRCTRL2, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_GCTRL;
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st7789v_transmit(p_st7789v, ST7789V_CMD_GCTRL, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_VCOM;
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st7789v_transmit(p_st7789v, ST7789V_CMD_VCOMS, &tmp, 1);
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#if (defined(DT_INST_0_SITRONIX_ST7789V_VRHS) && \
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defined(DT_INST_0_SITRONIX_ST7789V_VDVS))
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tmp = 0x01;
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st7789v_transmit(p_st7789v, ST7789V_CMD_VDVVRHEN, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_VRHS;
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st7789v_transmit(p_st7789v, ST7789V_CMD_VRH, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_VDVS;
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st7789v_transmit(p_st7789v, ST7789V_CMD_VDS, &tmp, 1);
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#endif
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st7789v_transmit(p_st7789v, ST7789V_CMD_PWCTRL1, st7789v_pwctrl1_param,
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sizeof(st7789v_pwctrl1_param));
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/* Memory Data Access Control */
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tmp = DT_INST_0_SITRONIX_ST7789V_MDAC;
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st7789v_transmit(p_st7789v, ST7789V_CMD_MADCTL, &tmp, 1);
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/* Interface Pixel Format */
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tmp = DT_INST_0_SITRONIX_ST7789V_COLMOD;
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st7789v_transmit(p_st7789v, ST7789V_CMD_COLMOD, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_LCM;
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st7789v_transmit(p_st7789v, ST7789V_CMD_LCMCTRL, &tmp, 1);
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tmp = DT_INST_0_SITRONIX_ST7789V_GAMMA;
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st7789v_transmit(p_st7789v, ST7789V_CMD_GAMSET, &tmp, 1);
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st7789v_transmit(p_st7789v, ST7789V_CMD_INV_ON, NULL, 0);
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st7789v_transmit(p_st7789v, ST7789V_CMD_PVGAMCTRL, st7789v_pvgam_param,
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sizeof(st7789v_pvgam_param));
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st7789v_transmit(p_st7789v, ST7789V_CMD_NVGAMCTRL, st7789v_nvgam_param,
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sizeof(st7789v_nvgam_param));
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st7789v_transmit(p_st7789v, ST7789V_CMD_RAMCTRL, st7789v_ram_param,
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sizeof(st7789v_ram_param));
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st7789v_transmit(p_st7789v, ST7789V_CMD_RGBCTRL, st7789v_rgb_param,
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sizeof(st7789v_rgb_param));
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}
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static int st7789v_init(struct device *dev)
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{
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struct st7789v_data *data = (struct st7789v_data *)dev->driver_data;
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@ -67,14 +67,4 @@
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#define ST7789V_CMD_PVGAMCTRL 0xe0
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#define ST7789V_CMD_NVGAMCTRL 0xe1
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struct st7789v_data;
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void st7789v_set_lcd_margins(struct st7789v_data *data,
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u16_t x_offset, u16_t y_offset);
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void st7789v_lcd_init(struct st7789v_data *data);
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void st7789v_transmit(struct st7789v_data *data, u8_t cmd,
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u8_t *tx_data, size_t tx_count);
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#endif
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@ -1,4 +1,5 @@
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# Copyright (c) 2019, Marc Reilly <marc@cpdesign.com.au>
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# Copyright (c) 2019, PHYTEC Messtechnik GmbH
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# SPDX-License-Identifier: Apache-2.0
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description: ST7789V 320x240 display controller
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@ -28,10 +29,85 @@ properties:
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x-offset:
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type: int
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required: false
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required: true
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description: The column offset in pixels of the LCD to the controller memory
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y-offset:
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type: int
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required: false
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required: true
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description: The row offset in pixels of the LCD to the controller memory
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vcom:
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type: int
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required: true
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description: VCOM Setting
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gctrl:
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type: int
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required: true
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description: Gate Control
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vrhs:
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type: int
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required: false
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description: VRH Setting
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vdvs:
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type: int
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required: false
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description: VDV Setting
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mdac:
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type: int
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required: true
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description: Memory Data Access Control
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lcm:
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type: int
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required: true
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description: LCM Setting
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colmod:
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type: int
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required: true
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description: Interface Pixel Format
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gamma:
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type: int
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required: true
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description: Gamma Setting
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porch-param:
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type: uint8-array
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required: true
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description: Porch Setting
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cmd2en-param:
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type: uint8-array
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required: true
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description: Command 2 Enable Parameter
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pwctrl1-param:
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type: uint8-array
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required: true
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description: Power Control 1 Parameter
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pvgam-param:
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type: uint8-array
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required: true
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description: Positive Voltage Gamma Control Parameter
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nvgam-param:
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type: uint8-array
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required: true
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description: Negative Voltage Gamma Control Parameter
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ram-param:
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type: uint8-array
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required: true
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description: RAM Control Parameter
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rgb-param:
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type: uint8-array
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required: true
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description: RGB Interface Control Parameter
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