diff options
Diffstat (limited to 'drivers/staging/fbtft/fb_tls8204.c')
| -rw-r--r-- | drivers/staging/fbtft/fb_tls8204.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/staging/fbtft/fb_tls8204.c b/drivers/staging/fbtft/fb_tls8204.c index fcd38bf2ed79..3253a25e9184 100644 --- a/drivers/staging/fbtft/fb_tls8204.c +++ b/drivers/staging/fbtft/fb_tls8204.c @@ -35,7 +35,9 @@ #define WIDTH 84 #define HEIGHT 48 #define TXBUFLEN WIDTH -#define DEFAULT_GAMMA "40" /* gamma is used to control contrast in this driver */ + +/* gamma is used to control contrast in this driver */ +#define DEFAULT_GAMMA "40" static unsigned bs = 4; module_param(bs, uint, 0); @@ -51,7 +53,8 @@ static int init_display(struct fbtft_par *par) write_reg(par, 0x21); /* 5:1 1 2:0 PD - Powerdown control: chip is active 1:0 V - Entry mode: horizontal addressing - 0:1 H - Extended instruction set control: extended + 0:1 H - Extended instruction set control: + extended */ /* H=1 Bias system */ @@ -83,7 +86,9 @@ 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); + fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, + "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", + __func__, xs, ys, xe, ye); /* H=0 Set X address of RAM */ write_reg(par, 0x80); /* 7:1 1 @@ -115,6 +120,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len) for (x = 0; x < WIDTH; x++) { u8 ch = 0; + for (i = 0; i < 8*WIDTH; i += WIDTH) { ch >>= 1; if (vmem16[(y*8*WIDTH)+i+x]) |