Commit b214fe592ab7 ("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@xxxxxxxxxxxxxxxxxxx>
---
I found this in passing while trying to track down another issue using ftrace.
I found it odd that I was seeing a lot of calls to __of_device_is_compatible()
coming from esdhc_irq() (the fact that this interrupt is going off on my board
is also odd, but that's a different story).
Changes in v2:
- add quirk_trans_complete_erratum to struct sdhci_esdhc so all the dt handling
is taken care of in esdhc_init.
drivers/mmc/host/sdhci-of-esdhc.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 7c73d243dc6c..45881b309956 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -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)) {
--
2.28.0
