mmc: sdhci-pci: add platform data
Add a means of getting platform data for the SDHCI PCI
devices. The data is stored against the slot not the
device in order to support multi-slot devices.
The data allows platform-specific setup (such as getting
GPIO numbers from firmware or setting up wl12xx for SDIO)
to be done in platform support files instead of the
sdhci-pci driver.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index b4b83f3..745f8fc 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -9,6 +9,7 @@
obj-$(CONFIG_MMC_MXS) += mxs-mmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
+obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI)) += sdhci-pci-data.o
obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o
obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o
obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
diff --git a/drivers/mmc/host/sdhci-pci-data.c b/drivers/mmc/host/sdhci-pci-data.c
new file mode 100644
index 0000000..a611217
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pci-data.c
@@ -0,0 +1,5 @@
+#include <linux/module.h>
+#include <linux/mmc/sdhci-pci-data.h>
+
+struct sdhci_pci_data *(*sdhci_pci_get_data)(struct pci_dev *pdev, int slotno);
+EXPORT_SYMBOL_GPL(sdhci_pci_get_data);
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index d2e77fb..4e8f324 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -25,6 +25,7 @@
#include <linux/gpio.h>
#include <linux/sfi.h>
#include <linux/pm_runtime.h>
+#include <linux/mmc/sdhci-pci-data.h>
#include "sdhci.h"
@@ -61,6 +62,7 @@
struct sdhci_pci_slot {
struct sdhci_pci_chip *chip;
struct sdhci_host *host;
+ struct sdhci_pci_data *data;
int pci_bar;
int rst_n_gpio;
@@ -1188,11 +1190,12 @@
\*****************************************************************************/
static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
- struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
+ struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
+ int slotno)
{
struct sdhci_pci_slot *slot;
struct sdhci_host *host;
- int ret;
+ int ret, bar = first_bar + slotno;
if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
@@ -1227,6 +1230,20 @@
slot->pci_bar = bar;
slot->rst_n_gpio = -EINVAL;
+ /* Retrieve platform data if there is any */
+ if (*sdhci_pci_get_data)
+ slot->data = sdhci_pci_get_data(pdev, slotno);
+
+ if (slot->data) {
+ if (slot->data->setup) {
+ ret = slot->data->setup(slot->data);
+ if (ret) {
+ dev_err(&pdev->dev, "platform setup failed\n");
+ goto free;
+ }
+ }
+ }
+
host->hw_name = "PCI";
host->ops = &sdhci_pci_ops;
host->quirks = chip->quirks;
@@ -1236,7 +1253,7 @@
ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
if (ret) {
dev_err(&pdev->dev, "cannot request region\n");
- goto free;
+ goto cleanup;
}
host->ioaddr = pci_ioremap_bar(pdev, bar);
@@ -1270,6 +1287,10 @@
release:
pci_release_region(pdev, bar);
+cleanup:
+ if (slot->data && slot->data->cleanup)
+ slot->data->cleanup(slot->data);
+
free:
sdhci_free_host(host);
@@ -1291,6 +1312,9 @@
if (slot->chip->fixes && slot->chip->fixes->remove_slot)
slot->chip->fixes->remove_slot(slot, dead);
+ if (slot->data && slot->data->cleanup)
+ slot->data->cleanup(slot->data);
+
pci_release_region(slot->chip->pdev, slot->pci_bar);
sdhci_free_host(slot->host);
@@ -1377,7 +1401,7 @@
slots = chip->num_slots; /* Quirk may have changed this */
for (i = 0; i < slots; i++) {
- slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
+ slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
if (IS_ERR(slot)) {
for (i--; i >= 0; i--)
sdhci_pci_remove_slot(chip->slots[i]);