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mmc: sdhci-pxav2: add initial support for PXA168 V1 controller 

Add a new compatible string for the version 1 controller used in the
PXA168, along with necessary quirks. Use a separate ops struct in
preparation for a silicon bug workaround only necessary on V1.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20230116194401.20372-2-doug@schmorgal.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Doug Brown 2023-01-16 11:43:54 -08:00 committed by Ulf Hansson
parent 05f0430f92
commit dfe9746aed
1 changed files with 32 additions and 8 deletions
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40
drivers/mmc/host/sdhci-pxav2.c
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@ -101,6 +101,24 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width)
writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
}
struct sdhci_pxa_variant {
const struct sdhci_ops *ops;
unsigned int extra_quirks;
};
static const struct sdhci_ops pxav1_sdhci_ops = {
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = pxav2_mmc_set_bus_width,
.reset = pxav2_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pxa_variant __maybe_unused pxav1_variant = {
.ops = &pxav1_sdhci_ops,
.extra_quirks = SDHCI_QUIRK_NO_BUSY_IRQ | SDHCI_QUIRK_32BIT_DMA_SIZE,
};
static const struct sdhci_ops pxav2_sdhci_ops = {
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
@ -109,11 +127,14 @@ static const struct sdhci_ops pxav2_sdhci_ops = {
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pxa_variant pxav2_variant = {
.ops = &pxav2_sdhci_ops,
};
#ifdef CONFIG_OF
static const struct of_device_id sdhci_pxav2_of_match[] = {
{
.compatible = "mrvl,pxav2-mmc",
},
{ .compatible = "mrvl,pxav1-mmc", .data = &pxav1_variant, },
{ .compatible = "mrvl,pxav2-mmc", .data = &pxav2_variant, },
{},
};
MODULE_DEVICE_TABLE(of, sdhci_pxav2_of_match);
@ -157,7 +178,7 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
struct sdhci_host *host = NULL;
const struct of_device_id *match;
const struct sdhci_pxa_variant *variant;
int ret;
struct clk *clk;
@ -185,10 +206,12 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
| SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
match = of_match_device(of_match_ptr(sdhci_pxav2_of_match), &pdev->dev);
if (match) {
variant = of_device_get_match_data(dev);
if (variant)
pdata = pxav2_get_mmc_pdata(dev);
}
else
variant = &pxav2_variant;
if (pdata) {
if (pdata->flags & PXA_FLAG_CARD_PERMANENT) {
/* on-chip device */
@ -208,7 +231,8 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
host->mmc->pm_caps |= pdata->pm_caps;
}
host->ops = &pxav2_sdhci_ops;
host->quirks |= variant->extra_quirks;
host->ops = variant->ops;
ret = sdhci_add_host(host);
if (ret)