Extract the code to set the column and page ranges into a helper function.
Signed-off-by: Geert Uytterhoeven geert@linux-m68k.org --- drivers/video/fbdev/ssd1307fb.c | 61 +++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 25 deletions(-)
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 6d7bd025bca1a175..cfa27ea0feab4f01 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -152,6 +152,38 @@ static inline int ssd1307fb_write_cmd(struct i2c_client *client, u8 cmd) return ret; }
+static int ssd1307fb_set_address_range(struct ssd1307fb_par *par, u8 col_start, + u8 cols, u8 page_start, u8 pages) +{ + u8 col_end = col_start + cols - 1; + u8 page_end = page_start + pages - 1; + int ret; + + /* Set column range */ + ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COL_RANGE); + if (ret < 0) + return ret; + + ret = ssd1307fb_write_cmd(par->client, col_start); + if (ret < 0) + return ret; + + ret = ssd1307fb_write_cmd(par->client, col_end); + if (ret < 0) + return ret; + + /* Set page range */ + ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PAGE_RANGE); + if (ret < 0) + return ret; + + ret = ssd1307fb_write_cmd(par->client, page_start); + if (ret < 0) + return ret; + + return ssd1307fb_write_cmd(par->client, page_end); +} + static int ssd1307fb_update_display(struct ssd1307fb_par *par) { struct ssd1307fb_array *array; @@ -461,31 +493,10 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) if (ret < 0) return ret;
- /* Set column range */ - ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_COL_RANGE); - if (ret < 0) - return ret; - - ret = ssd1307fb_write_cmd(par->client, par->col_offset); - if (ret < 0) - return ret; - - ret = ssd1307fb_write_cmd(par->client, par->col_offset + par->width - 1); - if (ret < 0) - return ret; - - /* Set page range */ - ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_PAGE_RANGE); - if (ret < 0) - return ret; - - ret = ssd1307fb_write_cmd(par->client, par->page_offset); - if (ret < 0) - return ret; - - ret = ssd1307fb_write_cmd(par->client, - par->page_offset + - DIV_ROUND_UP(par->height, 8) - 1); + /* Set column and page range */ + ret = ssd1307fb_set_address_range(par, par->col_offset, par->width, + par->page_offset, + DIV_ROUND_UP(par->height, 8)); if (ret < 0) return ret;