Commit e9f68065 authored by Dennis Menschel's avatar Dennis Menschel Committed by Greg Kroah-Hartman

staging: fbtft: add support for C-Berry28 display

This patch adds support for the C-Berry28, a small 2.8" color display
with a resolution of 320x240 pixels from admatec for the Raspberry Pi.
It uses the Sitronix ST7789V display controller along with a custom
init sequence and custom gamma curves.
Signed-off-by: default avatarDennis Menschel <menschel-d@posteo.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d4c402ff
...@@ -126,6 +126,59 @@ static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par, ...@@ -126,6 +126,59 @@ static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
"02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n" \ "02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n" \
"03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10" "03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10"
#define CBERRY28_GAMMA \
"D0 00 14 15 13 2C 42 43 4E 09 16 14 18 21\n" \
"D0 00 14 15 13 0B 43 55 53 0C 17 14 23 20"
static int cberry28_init_sequence[] = {
/* turn off sleep mode */
-1, 0x11,
-2, 120,
/* set pixel format to RGB-565 */
-1, 0x3A, 0x05,
-1, 0xB2, 0x0C, 0x0C, 0x00, 0x33, 0x33,
/*
* VGH = 13.26V
* VGL = -10.43V
*/
-1, 0xB7, 0x35,
/*
* VDV and VRH register values come from command write
* (instead of NVM)
*/
-1, 0xC2, 0x01, 0xFF,
/*
* VAP = 4.7V + (VCOM + VCOM offset + 0.5 * VDV)
* VAN = -4.7V + (VCOM + VCOM offset + 0.5 * VDV)
*/
-1, 0xC3, 0x17,
/* VDV = 0V */
-1, 0xC4, 0x20,
/* VCOM = 0.875V */
-1, 0xBB, 0x1F,
/* VCOM offset = 0V */
-1, 0xC5, 0x20,
/*
* AVDD = 6.6V
* AVCL = -4.8V
* VDS = 2.3V
*/
-1, 0xD0, 0xA4, 0x61,
-1, 0x29,
-3,
};
static int hy28b_init_sequence[] = { static int hy28b_init_sequence[] = {
-1, 0x00e7, 0x0010, -1, 0x0000, 0x0001, -1, 0x00e7, 0x0010, -1, 0x0000, 0x0001,
-1, 0x0001, 0x0100, -1, 0x0002, 0x0700, -1, 0x0001, 0x0100, -1, 0x0002, 0x0700,
...@@ -312,6 +365,27 @@ static struct fbtft_device_display displays[] = { ...@@ -312,6 +365,27 @@ static struct fbtft_device_display displays[] = {
}, },
} }
} }
}, {
.name = "admatec_c-berry28",
.spi = &(struct spi_board_info) {
.modalias = "fb_st7789v",
.max_speed_hz = 48000000,
.mode = SPI_MODE_0,
.platform_data = &(struct fbtft_platform_data) {
.display = {
.buswidth = 8,
.backlight = 1,
.init_sequence = cberry28_init_sequence,
},
.gpios = (const struct fbtft_gpio []) {
{ "reset", 25 },
{ "dc", 22 },
{ "led", 18 },
{},
},
.gamma = CBERRY28_GAMMA,
}
}
}, { }, {
.name = "agm1264k-fl", .name = "agm1264k-fl",
.pdev = &(struct platform_device) { .pdev = &(struct platform_device) {
......
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