diff options
| author |   Oliver Graute <oliver.graute@kococonnector.com> | 2020-05-13 16:30:46 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-15 15:47:31 +0200 |
| commit | f03c9b7884720973d1673fbb64f808897ca88a12 (patch) | |
| tree | d5cbca6fee6dfa56fbe13c2695edade8758036a0 | |
| parent | staging: qlge: Remove unnecessary spaces in qlge_main.c (diff) | |
| download | linux-dev-f03c9b7884720973d1673fbb64f808897ca88a12.tar.xz linux-dev-f03c9b7884720973d1673fbb64f808897ca88a12.zip | |
staging: fbtft: fb_st7789v: Initialize the Display
Set Gamma Values and Register Values for the HSD20_IPS Panel
Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
Link: https://lore.kernel.org/r/1589380299-21871-1-git-send-email-oliver.graute@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/fbtft/fb_st7789v.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c index 3c3f387936e8..ebc17e05ecd0 100644 --- a/drivers/staging/fbtft/fb_st7789v.c +++ b/drivers/staging/fbtft/fb_st7789v.c @@ -20,6 +20,12 @@ "70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25\n" \ "70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25" +#define HSD20_IPS_GAMMA \ + "D0 05 0A 09 08 05 2E 44 45 0F 17 16 2B 33\n" \ + "D0 05 0A 09 08 05 2E 43 45 0F 16 16 2B 33" + +#define HSD20_IPS "true" + /** * enum st7789v_command - ST7789V display controller commands * @@ -82,14 +88,20 @@ static int init_display(struct fbtft_par *par) /* set pixel format to RGB-565 */ write_reg(par, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT); + if (HSD20_IPS) + write_reg(par, PORCTRL, 0x05, 0x05, 0x00, 0x33, 0x33); - write_reg(par, PORCTRL, 0x08, 0x08, 0x00, 0x22, 0x22); + else + write_reg(par, PORCTRL, 0x08, 0x08, 0x00, 0x22, 0x22); /* * VGH = 13.26V * VGL = -10.43V */ - write_reg(par, GCTRL, 0x35); + if (HSD20_IPS) + write_reg(par, GCTRL, 0x75); + else + write_reg(par, GCTRL, 0x35); /* * VDV and VRH register values come from command write @@ -101,13 +113,19 @@ static int init_display(struct fbtft_par *par) * VAP = 4.1V + (VCOM + VCOM offset + 0.5 * VDV) * VAN = -4.1V + (VCOM + VCOM offset + 0.5 * VDV) */ - write_reg(par, VRHS, 0x0B); + if (HSD20_IPS) + write_reg(par, VRHS, 0x13); + else + write_reg(par, VRHS, 0x0B); /* VDV = 0V */ write_reg(par, VDVS, 0x20); /* VCOM = 0.9V */ - write_reg(par, VCOMS, 0x20); + if (HSD20_IPS) + write_reg(par, VCOMS, 0x22); + else + write_reg(par, VCOMS, 0x20); /* VCOM offset = 0V */ write_reg(par, VCMOFSET, 0x20); @@ -120,6 +138,10 @@ static int init_display(struct fbtft_par *par) write_reg(par, PWCTRL1, 0xA4, 0xA1); write_reg(par, MIPI_DCS_SET_DISPLAY_ON); + + if (HSD20_IPS) + write_reg(par, MIPI_DCS_ENTER_INVERT_MODE); + return 0; } @@ -234,7 +256,7 @@ static struct fbtft_display display = { .height = 320, .gamma_num = 2, .gamma_len = 14, - .gamma = DEFAULT_GAMMA, + .gamma = HSD20_IPS_GAMMA, .fbtftops = { .init_display = init_display, .set_var = set_var, |