static inline void _sdhci_sprd_set_clock(struct sdhci_host *host,
unsigned int clk)
{
struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
u32 div, val, mask;
div = sdhci_sprd_calc_div(sprd_host->base_rate, clk);
clk |= ((div & 0x300) >> 2) | ((div & 0xFF) << 8);
sdhci_enable_clk(host, clk);
/* enable auto gate sdhc_enable_auto_gate */
val = sdhci_readl(host, SDHCI_SPRD_REG_32_BUSY_POSI);
mask = SDHCI_SPRD_BIT_OUTR_CLK_AUTO_EN |
SDHCI_SPRD_BIT_INNR_CLK_AUTO_EN;
if (mask != (val & mask)) {
val |= mask;
sdhci_writel(host, val, SDHCI_SPRD_REG_32_BUSY_POSI);
}
}
/**
* __sdhci_msm_set_clock - sdhci_msm clock control.
*
* Description:
* MSM controller does not use internal divider and
* instead directly control the GCC clock as per
* HW recommendation.
**/
void __sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
{
u16 clk;
/*
* Keep actual_clock as zero -
* - since there is no divider used so no need of having actual_clock.
* - MSM controller uses SDCLK for data timeout calculation. If
* actual_clock is zero, host->clock is taken for calculation.
*/
host->mmc->actual_clock = 0;
sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
if (clock == 0)
return;
/*
* MSM controller do not use clock divider.
* Thus read SDHCI_CLOCK_CONTROL and only enable
* clock with no divider value programmed.
*/
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
sdhci_enable_clk(host, clk);
}