diff options
Diffstat (limited to 'drivers/staging/fbtft/fb_ssd1351.c')
| -rw-r--r-- | drivers/staging/fbtft/fb_ssd1351.c | 67 |
1 files changed, 25 insertions, 42 deletions
diff --git a/drivers/staging/fbtft/fb_ssd1351.c b/drivers/staging/fbtft/fb_ssd1351.c index 9bcd7a0ae..cef33e439 100644 --- a/drivers/staging/fbtft/fb_ssd1351.c +++ b/drivers/staging/fbtft/fb_ssd1351.c @@ -25,8 +25,6 @@ static void register_onboard_backlight(struct fbtft_par *par); static int init_display(struct fbtft_par *par) { - fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); - if (par->pdata && par->pdata->display.backlight == FBTFT_ONBOARD_BACKLIGHT) { /* module uses onboard GPIO for panel power */ @@ -61,9 +59,6 @@ static int init_display(struct fbtft_par *par) static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) { - fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, - "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); - write_reg(par, 0x15, xs, xe); write_reg(par, 0x75, ys, ye); write_reg(par, 0x5c); @@ -73,8 +68,6 @@ static int set_var(struct fbtft_par *par) { unsigned remap; - fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); - if (par->fbtftops.init_display != init_display) { /* don't risk messing up register A0h */ fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, @@ -104,34 +97,31 @@ static int set_var(struct fbtft_par *par) } /* - Grayscale Lookup Table - GS1 - GS63 - The driver Gamma curve contains the relative values between the entries - in the Lookup table. - - From datasheet: - 8.8 Gray Scale Decoder - - there are total 180 Gamma Settings (Setting 0 to Setting 180) - available for the Gray Scale table. - - The gray scale is defined in incremental way, with reference - to the length of previous table entry: - Setting of GS1 has to be >= 0 - Setting of GS2 has to be > Setting of GS1 +1 - Setting of GS3 has to be > Setting of GS2 +1 - : - Setting of GS63 has to be > Setting of GS62 +1 - - -*/ + * Grayscale Lookup Table + * GS1 - GS63 + * The driver Gamma curve contains the relative values between the entries + * in the Lookup table. + * + * From datasheet: + * 8.8 Gray Scale Decoder + * + * there are total 180 Gamma Settings (Setting 0 to Setting 180) + * available for the Gray Scale table. + * + * The gray scale is defined in incremental way, with reference + * to the length of previous table entry: + * Setting of GS1 has to be >= 0 + * Setting of GS2 has to be > Setting of GS1 +1 + * Setting of GS3 has to be > Setting of GS2 +1 + * : + * Setting of GS63 has to be > Setting of GS62 +1 + * + */ static int set_gamma(struct fbtft_par *par, unsigned long *curves) { unsigned long tmp[GAMMA_NUM * GAMMA_LEN]; int i, acc = 0; - fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); - for (i = 0; i < 63; i++) { if (i > 0 && curves[i] < 2) { dev_err(par->info->device, @@ -173,7 +163,6 @@ static int blank(struct fbtft_par *par, bool on) return 0; } - static struct fbtft_display display = { .regwidth = 8, .width = WIDTH, @@ -208,25 +197,20 @@ static int update_onboard_backlight(struct backlight_device *bd) return 0; } +static const struct backlight_ops bl_ops = { + .update_status = update_onboard_backlight, +}; + static void register_onboard_backlight(struct fbtft_par *par) { struct backlight_device *bd; struct backlight_properties bl_props = { 0, }; - struct backlight_ops *bl_ops; - fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__); - - bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops), - GFP_KERNEL); - if (!bl_ops) - return; - - bl_ops->update_status = update_onboard_backlight; bl_props.type = BACKLIGHT_RAW; bl_props.power = FB_BLANK_POWERDOWN; bd = backlight_device_register(dev_driver_string(par->info->device), - par->info->device, par, bl_ops, &bl_props); + par->info->device, par, &bl_ops, &bl_props); if (IS_ERR(bd)) { dev_err(par->info->device, "cannot register backlight device (%ld)\n", @@ -242,7 +226,6 @@ static void register_onboard_backlight(struct fbtft_par *par) static void register_onboard_backlight(struct fbtft_par *par) { }; #endif - FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1351", &display); MODULE_ALIAS("spi:" DRVNAME); |