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mmc: sdhci-iproc: Add ACPI support 

Add ACPI support to all IPROC SDHCI variants.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Srinath Mannam 2018-08-05 13:22:52 +05:30 committed by Ulf Hansson
parent 8199d312da
commit 7c7ba4334e
2 changed files with 41 additions and 19 deletions
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1
drivers/mmc/host/Kconfig
View File

@ -345,6 +345,7 @@ config MMC_SDHCI_IPROC
tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller"
depends on ARCH_BCM2835 || ARCH_BCM_IPROC || COMPILE_TEST
depends on MMC_SDHCI_PLTFM
depends on OF || ACPI
default ARCH_BCM_IPROC
select MMC_SDHCI_IO_ACCESSORS
help

59
drivers/mmc/host/sdhci-iproc.c
View File

@ -15,6 +15,7 @@
* iProc SDHCI platform driver
*/
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/mmc/host.h>
@ -162,9 +163,19 @@ static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg)
sdhci_iproc_writel(host, newval, reg & ~3);
}
static unsigned int sdhci_iproc_get_max_clock(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
if (pltfm_host->clk)
return sdhci_pltfm_clk_get_max_clock(host);
else
return pltfm_host->clock;
}
static const struct sdhci_ops sdhci_iproc_ops = {
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_max_clock = sdhci_iproc_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
@ -178,7 +189,7 @@ static const struct sdhci_ops sdhci_iproc_32only_ops = {
.write_w = sdhci_iproc_writew,
.write_b = sdhci_iproc_writeb,
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_max_clock = sdhci_iproc_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
@ -256,19 +267,25 @@ static const struct of_device_id sdhci_iproc_of_match[] = {
};
MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match);
static const struct acpi_device_id sdhci_iproc_acpi_ids[] = {
{ .id = "BRCM5871", .driver_data = (kernel_ulong_t)&iproc_cygnus_data },
{ .id = "BRCM5872", .driver_data = (kernel_ulong_t)&iproc_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(acpi, sdhci_iproc_acpi_ids);
static int sdhci_iproc_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct sdhci_iproc_data *iproc_data;
struct device *dev = &pdev->dev;
const struct sdhci_iproc_data *iproc_data = NULL;
struct sdhci_host *host;
struct sdhci_iproc_host *iproc_host;
struct sdhci_pltfm_host *pltfm_host;
int ret;
match = of_match_device(sdhci_iproc_of_match, &pdev->dev);
if (!match)
return -EINVAL;
iproc_data = match->data;
iproc_data = device_get_match_data(dev);
if (!iproc_data)
return -ENODEV;
host = sdhci_pltfm_init(pdev, iproc_data->pdata, sizeof(*iproc_host));
if (IS_ERR(host))
@ -280,19 +297,21 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
iproc_host->data = iproc_data;
mmc_of_parse(host->mmc);
sdhci_get_of_property(pdev);
sdhci_get_property(pdev);
host->mmc->caps |= iproc_host->data->mmc_caps;
pltfm_host->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(pltfm_host->clk)) {
ret = PTR_ERR(pltfm_host->clk);
goto err;
}
ret = clk_prepare_enable(pltfm_host->clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable host clk\n");
goto err;
if (dev->of_node) {
pltfm_host->clk = devm_clk_get(dev, NULL);
if (IS_ERR(pltfm_host->clk)) {
ret = PTR_ERR(pltfm_host->clk);
goto err;
}
ret = clk_prepare_enable(pltfm_host->clk);
if (ret) {
dev_err(dev, "failed to enable host clk\n");
goto err;
}
}
if (iproc_host->data->pdata->quirks & SDHCI_QUIRK_MISSING_CAPS) {
@ -307,7 +326,8 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
return 0;
err_clk:
clk_disable_unprepare(pltfm_host->clk);
if (dev->of_node)
clk_disable_unprepare(pltfm_host->clk);
err:
sdhci_pltfm_free(pdev);
return ret;
@ -317,6 +337,7 @@ static struct platform_driver sdhci_iproc_driver = {
.driver = {
.name = "sdhci-iproc",
.of_match_table = sdhci_iproc_of_match,
.acpi_match_table = ACPI_PTR(sdhci_iproc_acpi_ids),
.pm = &sdhci_pltfm_pmops,
},
.probe = sdhci_iproc_probe,