Commit 7c7ba433 authored by Srinath Mannam's avatar Srinath Mannam Committed by Ulf Hansson

mmc: sdhci-iproc: Add ACPI support

Add ACPI support to all IPROC SDHCI variants.
Signed-off-by: default avatarSrinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: default avatarRay Jui <ray.jui@broadcom.com>
Reviewed-by: default avatarScott Branden <scott.branden@broadcom.com>
Reviewed-by: default avatarVladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 8199d312
...@@ -345,6 +345,7 @@ config MMC_SDHCI_IPROC ...@@ -345,6 +345,7 @@ config MMC_SDHCI_IPROC
tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller" tristate "SDHCI support for the BCM2835 & iProc SD/MMC Controller"
depends on ARCH_BCM2835 || ARCH_BCM_IPROC || COMPILE_TEST depends on ARCH_BCM2835 || ARCH_BCM_IPROC || COMPILE_TEST
depends on MMC_SDHCI_PLTFM depends on MMC_SDHCI_PLTFM
depends on OF || ACPI
default ARCH_BCM_IPROC default ARCH_BCM_IPROC
select MMC_SDHCI_IO_ACCESSORS select MMC_SDHCI_IO_ACCESSORS
help help
......
...@@ -15,6 +15,7 @@ ...@@ -15,6 +15,7 @@
* iProc SDHCI platform driver * iProc SDHCI platform driver
*/ */
#include <linux/acpi.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/mmc/host.h> #include <linux/mmc/host.h>
...@@ -162,9 +163,19 @@ static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg) ...@@ -162,9 +163,19 @@ static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg)
sdhci_iproc_writel(host, newval, reg & ~3); 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 = { static const struct sdhci_ops sdhci_iproc_ops = {
.set_clock = sdhci_set_clock, .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, .set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset, .reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling, .set_uhs_signaling = sdhci_set_uhs_signaling,
...@@ -178,7 +189,7 @@ static const struct sdhci_ops sdhci_iproc_32only_ops = { ...@@ -178,7 +189,7 @@ static const struct sdhci_ops sdhci_iproc_32only_ops = {
.write_w = sdhci_iproc_writew, .write_w = sdhci_iproc_writew,
.write_b = sdhci_iproc_writeb, .write_b = sdhci_iproc_writeb,
.set_clock = sdhci_set_clock, .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, .set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset, .reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling, .set_uhs_signaling = sdhci_set_uhs_signaling,
...@@ -256,19 +267,25 @@ static const struct of_device_id sdhci_iproc_of_match[] = { ...@@ -256,19 +267,25 @@ static const struct of_device_id sdhci_iproc_of_match[] = {
}; };
MODULE_DEVICE_TABLE(of, 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) static int sdhci_iproc_probe(struct platform_device *pdev)
{ {
const struct of_device_id *match; struct device *dev = &pdev->dev;
const struct sdhci_iproc_data *iproc_data; const struct sdhci_iproc_data *iproc_data = NULL;
struct sdhci_host *host; struct sdhci_host *host;
struct sdhci_iproc_host *iproc_host; struct sdhci_iproc_host *iproc_host;
struct sdhci_pltfm_host *pltfm_host; struct sdhci_pltfm_host *pltfm_host;
int ret; int ret;
match = of_match_device(sdhci_iproc_of_match, &pdev->dev); iproc_data = device_get_match_data(dev);
if (!match) if (!iproc_data)
return -EINVAL; return -ENODEV;
iproc_data = match->data;
host = sdhci_pltfm_init(pdev, iproc_data->pdata, sizeof(*iproc_host)); host = sdhci_pltfm_init(pdev, iproc_data->pdata, sizeof(*iproc_host));
if (IS_ERR(host)) if (IS_ERR(host))
...@@ -280,19 +297,21 @@ static int sdhci_iproc_probe(struct platform_device *pdev) ...@@ -280,19 +297,21 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
iproc_host->data = iproc_data; iproc_host->data = iproc_data;
mmc_of_parse(host->mmc); mmc_of_parse(host->mmc);
sdhci_get_of_property(pdev); sdhci_get_property(pdev);
host->mmc->caps |= iproc_host->data->mmc_caps; host->mmc->caps |= iproc_host->data->mmc_caps;
pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); if (dev->of_node) {
if (IS_ERR(pltfm_host->clk)) { pltfm_host->clk = devm_clk_get(dev, NULL);
ret = PTR_ERR(pltfm_host->clk); if (IS_ERR(pltfm_host->clk)) {
goto err; ret = PTR_ERR(pltfm_host->clk);
} goto err;
ret = clk_prepare_enable(pltfm_host->clk); }
if (ret) { ret = clk_prepare_enable(pltfm_host->clk);
dev_err(&pdev->dev, "failed to enable host clk\n"); if (ret) {
goto err; dev_err(dev, "failed to enable host clk\n");
goto err;
}
} }
if (iproc_host->data->pdata->quirks & SDHCI_QUIRK_MISSING_CAPS) { if (iproc_host->data->pdata->quirks & SDHCI_QUIRK_MISSING_CAPS) {
...@@ -307,7 +326,8 @@ static int sdhci_iproc_probe(struct platform_device *pdev) ...@@ -307,7 +326,8 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
return 0; return 0;
err_clk: err_clk:
clk_disable_unprepare(pltfm_host->clk); if (dev->of_node)
clk_disable_unprepare(pltfm_host->clk);
err: err:
sdhci_pltfm_free(pdev); sdhci_pltfm_free(pdev);
return ret; return ret;
...@@ -317,6 +337,7 @@ static struct platform_driver sdhci_iproc_driver = { ...@@ -317,6 +337,7 @@ static struct platform_driver sdhci_iproc_driver = {
.driver = { .driver = {
.name = "sdhci-iproc", .name = "sdhci-iproc",
.of_match_table = sdhci_iproc_of_match, .of_match_table = sdhci_iproc_of_match,
.acpi_match_table = ACPI_PTR(sdhci_iproc_acpi_ids),
.pm = &sdhci_pltfm_pmops, .pm = &sdhci_pltfm_pmops,
}, },
.probe = sdhci_iproc_probe, .probe = sdhci_iproc_probe,
......
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