diff options
Diffstat (limited to 'drivers/gpu/drm/solomon/ssd130x.c')
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x.c | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c index 5a80b228d18c..3b4dde09538a 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -272,8 +272,8 @@ static int ssd130x_pwm_enable(struct ssd130x_device *ssd130x) /* Enable the PWM */ pwm_enable(ssd130x->pwm); - dev_dbg(dev, "Using PWM%d with a %lluns period.\n", - ssd130x->pwm->pwm, pwm_get_period(ssd130x->pwm)); + dev_dbg(dev, "Using PWM %s with a %lluns period.\n", + ssd130x->pwm->label, pwm_get_period(ssd130x->pwm)); return 0; } @@ -553,14 +553,45 @@ static int ssd130x_update_rect(struct ssd130x_device *ssd130x, static void ssd130x_clear_screen(struct ssd130x_device *ssd130x, struct ssd130x_plane_state *ssd130x_state) { - struct drm_rect fullscreen = { - .x1 = 0, - .x2 = ssd130x->width, - .y1 = 0, - .y2 = ssd130x->height, - }; - - ssd130x_update_rect(ssd130x, ssd130x_state, &fullscreen); + unsigned int page_height = ssd130x->device_info->page_height; + unsigned int pages = DIV_ROUND_UP(ssd130x->height, page_height); + u8 *data_array = ssd130x_state->data_array; + unsigned int width = ssd130x->width; + int ret, i; + + if (!ssd130x->page_address_mode) { + memset(data_array, 0, width * pages); + + /* Set address range for horizontal addressing mode */ + ret = ssd130x_set_col_range(ssd130x, ssd130x->col_offset, width); + if (ret < 0) + return; + + ret = ssd130x_set_page_range(ssd130x, ssd130x->page_offset, pages); + if (ret < 0) + return; + + /* Write out update in one go if we aren't using page addressing mode */ + ssd130x_write_data(ssd130x, data_array, width * pages); + } else { + /* + * In page addressing mode, the start address needs to be reset, + * and each page then needs to be written out separately. + */ + memset(data_array, 0, width); + + for (i = 0; i < pages; i++) { + ret = ssd130x_set_page_pos(ssd130x, + ssd130x->page_offset + i, + ssd130x->col_offset); + if (ret < 0) + return; + + ret = ssd130x_write_data(ssd130x, data_array, width); + if (ret < 0) + return; + } + } } static int ssd130x_fb_blit_rect(struct drm_plane_state *state, |