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path: root/drivers/video/s3c-fb.c
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Diffstat (limited to 'drivers/video/s3c-fb.c')
-rw-r--r--drivers/video/s3c-fb.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index adf9632c6b1f..53cb722c45a0 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -211,21 +211,23 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var,
/**
* s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock.
- * @id: window id.
* @sfb: The hardware state.
* @pixclock: The pixel clock wanted, in picoseconds.
*
* Given the specified pixel clock, work out the necessary divider to get
* close to the output frequency.
*/
-static int s3c_fb_calc_pixclk(unsigned char id, struct s3c_fb *sfb, unsigned int pixclk)
+static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk)
{
- struct s3c_fb_pd_win *win = sfb->pdata->win[id];
unsigned long clk = clk_get_rate(sfb->bus_clk);
+ unsigned long long tmp;
unsigned int result;
- pixclk *= win->win_mode.refresh;
- result = clk / pixclk;
+ tmp = (unsigned long long)clk;
+ tmp *= pixclk;
+
+ do_div(tmp, 1000000000UL);
+ result = (unsigned int)tmp / 1000;
dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n",
pixclk, clk, result, clk / result);
@@ -301,7 +303,7 @@ static int s3c_fb_set_par(struct fb_info *info)
/* use window 0 as the basis for the lcd output timings */
if (win_no == 0) {
- clkdiv = s3c_fb_calc_pixclk(win_no, sfb, var->pixclock);
+ clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock);
data = sfb->pdata->vidcon0;
data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);