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mmc: sdhci-of-esdhc: Don't walk device-tree on every interrupt 

Commit b214fe592a ("mmc: sdhci-of-esdhc: add erratum eSDHC7 support")
added code to check for a specific compatible string in the device-tree
on every esdhc interrupat. Instead of doing this record the quirk in
struct sdhci_esdhc and lookup the struct in esdhc_irq.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200903012029.25673-1-chris.packham@alliedtelesis.co.nz
Fixes: b214fe592a ("mmc: sdhci-of-esdhc: add erratum eSDHC7 support")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
zero-sugar-mainline-defconfig
Chris Packham 2020-09-03 13:20:29 +12:00 committed by Ulf Hansson
parent a395acf0f6
commit 060522d897
1 changed files with 7 additions and 3 deletions
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10
drivers/mmc/host/sdhci-of-esdhc.c
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@ -81,6 +81,7 @@ struct sdhci_esdhc {
bool quirk_tuning_erratum_type2;
bool quirk_ignore_data_inhibit;
bool quirk_delay_before_data_reset;
bool quirk_trans_complete_erratum;
bool in_sw_tuning;
unsigned int peripheral_clock;
const struct esdhc_clk_fixup *clk_fixup;
@ -1177,10 +1178,11 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host,
static u32 esdhc_irq(struct sdhci_host *host, u32 intmask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
u32 command;
if (of_find_compatible_node(NULL, NULL,
"fsl,p2020-esdhc")) {
if (esdhc->quirk_trans_complete_erratum) {
command = SDHCI_GET_CMD(sdhci_readw(host,
SDHCI_COMMAND));
if (command == MMC_WRITE_MULTIPLE_BLOCK &&
@ -1334,8 +1336,10 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
esdhc->clk_fixup = match->data;
np = pdev->dev.of_node;
if (of_device_is_compatible(np, "fsl,p2020-esdhc"))
if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
esdhc->quirk_delay_before_data_reset = true;
esdhc->quirk_trans_complete_erratum = true;
}
clk = of_clk_get(np, 0);
if (!IS_ERR(clk)) {