drivers/mfd/db8500-prcmu.c

631  * @div:	The divider to be applied.
634  * @div should be in the range [1,63] to request a configuration, or 0 to
637 int prcmu_config_clkout(u8 clkout, u8 source, u8 div)
648 	BUG_ON(div > 63);
651 	if (!div && !requests[clkout])
658 			(div << PRCM_CLKOCR_CLKODIV0_SHIFT));
664 			(div << PRCM_CLKOCR_CLKODIV1_SHIFT));
672 		if (div) {
685 	requests[clkout] += (div ? 1 : -1);
871 		u32 div;
874 		div = (val & PRCM_CLK_MGT_CLKPLLDIV_MASK);
876 			if ((div <= 1) || (div > 15)) {
878 					div, __func__);
881 			div <<= 1;
883 			if (div <= 2)
885 			div >>= 1;
888 			(div & PRCM_CLK_MGT_CLKPLLDIV_MASK));
1401 	u32 div = 1;
1410 		div *= d;
1414 		div *= d;
1417 		div *= 2;
1424 		div *= 2;
1426 	(void)do_div(rate, div);
1504 	u32 div = 1;
1516 		div *= 2;
1519 		div *= 2;
1523 			PLL_RAW) / div;
1531 	u32 div;
1533 	div = readl(PRCM_DSITVCLK_DIV);
1534 	div = ((div & dsiescclk[n].div_mask) >> (dsiescclk[n].div_shift));
1535 	return clock_rate(PRCMU_TVCLK) / max((u32)1, div);
1583 	u32 div;
1585 	div = (src_rate / rate);
1586 	if (div == 0)
1588 	if (rate < (src_rate / div))
1589 		div++;
1590 	return div;
1596 	u32 div;
1603 	div = clock_divider(src_rate, rate);
1606 			if (div > 2)
1607 				div = 2;
1609 			div = 1;
1611 	} else if ((clock == PRCMU_SGACLK) && (div == 3)) {
1618 	rounded_rate = (src_rate / min(div, (u32)31));
1706 	u32 div;
1712 	div = clock_divider(src_rate, rate);
1713 	rounded_rate = (src_rate / ((div > 2) ? 4 : div));
1720 	u32 div;
1725 	div = clock_divider(src_rate, rate);
1726 	rounded_rate = (src_rate / min(div, (u32)255));
1750 	u32 div;
1763 	div = clock_divider(src_rate, rate);
1766 			if (div > 1)
1774 		if (div == 3) {
1780 				div = 0;
1783 		val |= min(div, (u32)31);
1786 		val |= min(div, (u32)31);
1876 	u32 div;
1878 	div = clock_divider(pll_rate(PRCM_PLLDSI_FREQ,
1881 	dsiclk[n].divsel = (div == 1) ? PRCM_DSI_PLLOUT_SEL_PHI :
1882 			   (div == 2) ? PRCM_DSI_PLLOUT_SEL_PHI_2 :
1894 	u32 div;
1896 	div = clock_divider(clock_rate(PRCMU_TVCLK), rate);
1899 	val |= (min(div, (u32)255) << dsiescclk[n].div_shift);