diff options
| -rw-r--r-- | drivers/staging/fbtft/fb_ssd1306.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c index 80fc570..bede2d5a 100644 --- a/drivers/staging/fbtft/fb_ssd1306.c +++ b/drivers/staging/fbtft/fb_ssd1306.c @@ -62,6 +62,8 @@ static int init_display(struct fbtft_par *par) write_reg(par, 0xA8); if (par->info->var.yres == 64) write_reg(par, 0x3F); + else if (par->info->var.yres == 48) + write_reg(par, 0x2F); else write_reg(par, 0x1F); @@ -95,6 +97,9 @@ static int init_display(struct fbtft_par *par) if (par->info->var.yres == 64) /* A[4]=1b, Alternative COM pin configuration */ write_reg(par, 0x12); + else if (par->info->var.yres == 48) + /* A[4]=1b, Alternative COM pin configuration */ + write_reg(par, 0x12); else /* A[4]=0b, Sequential COM pin configuration */ write_reg(par, 0x02); @@ -124,6 +129,19 @@ static int init_display(struct fbtft_par *par) return 0; } +static void set_addr_win_64x48(struct fbtft_par *par) +{ + /* Set Column Address */ + write_reg(par, 0x21); + write_reg(par, 0x20); + write_reg(par, 0x5F); + + /* Set Page Address */ + write_reg(par, 0x22); + write_reg(par, 0x0); + write_reg(par, 0x5); +} + static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) { /* Set Lower Column Start Address for Page Addressing Mode */ @@ -132,6 +150,9 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) write_reg(par, 0x10 | 0x0); /* Set Display Start Line */ write_reg(par, 0x40 | 0x0); + + if (par->info->var.xres == 64 && par->info->var.yres == 48) + set_addr_win_64x48(par); } static int blank(struct fbtft_par *par, bool on) |
