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mmc: sdhci-of-esdhc: convert to use esdhc_tuning_window_ptr() 

Convert to use a new function esdhc_tuning_window_ptr() to
get tuning window start point and end point.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20191212075219.48625-1-yangbo.lu@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Yangbo Lu 2019-12-12 15:52:18 +08:00 committed by Ulf Hansson
parent 738987a1d6
commit f3c2082508
1 changed files with 21 additions and 13 deletions
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34
drivers/mmc/host/sdhci-of-esdhc.c
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@ -888,20 +888,11 @@ static void esdhc_tuning_block_enable(struct sdhci_host *host, bool enable)
esdhc_clock_enable(host, true);
}
static void esdhc_prepare_sw_tuning(struct sdhci_host *host, u8 *window_start,
static void esdhc_tuning_window_ptr(struct sdhci_host *host, u8 *window_start,
u8 *window_end)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
u8 tbstat_15_8, tbstat_7_0;
u32 val;
if (esdhc->quirk_tuning_erratum_type1) {
*window_start = 5 * esdhc->div_ratio;
*window_end = 3 * esdhc->div_ratio;
return;
}
/* Write TBCTL[11:8]=4'h8 */
val = sdhci_readl(host, ESDHC_TBCTL);
val &= ~(0xf << 8);
@ -920,6 +911,25 @@ static void esdhc_prepare_sw_tuning(struct sdhci_host *host, u8 *window_start,
val = sdhci_readl(host, ESDHC_TBSTAT);
val = sdhci_readl(host, ESDHC_TBSTAT);
*window_end = val & 0xff;
*window_start = (val >> 8) & 0xff;
}
static void esdhc_prepare_sw_tuning(struct sdhci_host *host, u8 *window_start,
u8 *window_end)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
u8 start_ptr, end_ptr;
if (esdhc->quirk_tuning_erratum_type1) {
*window_start = 5 * esdhc->div_ratio;
*window_end = 3 * esdhc->div_ratio;
return;
}
esdhc_tuning_window_ptr(host, &start_ptr, &end_ptr);
/* Reset data lines by setting ESDHCCTL[RSTD] */
sdhci_reset(host, SDHCI_RESET_DATA);
/* Write 32'hFFFF_FFFF to IRQSTAT register */
@ -930,10 +940,8 @@ static void esdhc_prepare_sw_tuning(struct sdhci_host *host, u8 *window_start,
* then program TBPTR[TB_WNDW_END_PTR] = 4 * div_ratio
* and program TBPTR[TB_WNDW_START_PTR] = 8 * div_ratio.
*/
tbstat_7_0 = val & 0xff;
tbstat_15_8 = (val >> 8) & 0xff;
if (abs(tbstat_15_8 - tbstat_7_0) > (4 * esdhc->div_ratio)) {
if (abs(start_ptr - end_ptr) > (4 * esdhc->div_ratio)) {
*window_start = 8 * esdhc->div_ratio;
*window_end = 4 * esdhc->div_ratio;
} else {