static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
{
u64 div, parent_rate;
u32 remainder;
parent_rate = (unsigned long long)clk->parent->rate * 16;
div = parent_rate;
remainder = do_div(div, rate);
/* Round the divider value */
if (remainder > (rate / 2))
div++;
/* Round up divider if it gets us closer to desired pix clk */
if ((div & 0xC) == 0xC) {
div += 0x10;
div &= ~0xF;
}
if (div > 0x1000)
debug("Overflow, DI_BS_CLKGEN0 div:0x%x\n", (u32)div);
__raw_writel(div, DI_BS_CLKGEN0(clk->id));
/*
* Setup pixel clock timing
* Down time is half of period
*/
__raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id));
clk->rate = (u64)(clk->parent->rate * 16) / div;
return 0;
}
static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
{
u32 div = (clk->parent->rate * 16) / rate;
__raw_writel(div, DI_BS_CLKGEN0(clk->id));
/* Setup pixel clock timing */
__raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id));
clk->rate = (clk->parent->rate * 16) / div;
return 0;
}
static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
{
u32 div = (clk->parent->rate * 16) / rate;
__raw_writel(div, DI_BS_CLKGEN0(clk->id));
/* Setup pixel clock timing */
/* Shift the pixel clock a little bit (1/4 - 3/4) */
__raw_writel( ((div * 3 / 32) << 16) | (div / 32), DI_BS_CLKGEN1(clk->id) );
clk->rate = (clk->parent->rate * 16) / div;
return 0;
}
