diff options
Diffstat (limited to 'target/linux/omap/patches-3.13/904-wlcore-add-initial-device-tree-support-to-the-sdio-module.patch')
| -rw-r--r-- | target/linux/omap/patches-3.13/904-wlcore-add-initial-device-tree-support-to-the-sdio-module.patch | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/target/linux/omap/patches-3.13/904-wlcore-add-initial-device-tree-support-to-the-sdio-module.patch b/target/linux/omap/patches-3.13/904-wlcore-add-initial-device-tree-support-to-the-sdio-module.patch new file mode 100644 index 0000000000..b95295625e --- /dev/null +++ b/target/linux/omap/patches-3.13/904-wlcore-add-initial-device-tree-support-to-the-sdio-module.patch @@ -0,0 +1,122 @@ +If platform data is not available, try to get the required information +from the device tree. Register an OF match table and parse the +appropriate device tree nodes. + +Parse interrupt property only, for now. + +Signed-off-by: Luciano Coelho <coelho@ti.com> +Reviewed-by: Felipe Balbi <balbi@ti.com> + +--- + drivers/net/wireless/ti/wlcore/sdio.c | 69 ++++++++++++++++++++++++++++++++--- + 1 file changed, 63 insertions(+), 6 deletions(-) + +--- a/drivers/net/wireless/ti/wlcore/sdio.c ++++ b/drivers/net/wireless/ti/wlcore/sdio.c +@@ -30,7 +30,7 @@ + #include <linux/mmc/sdio_ids.h> + #include <linux/mmc/card.h> + #include <linux/mmc/host.h> +-#include <linux/gpio.h> ++#include <linux/of_irq.h> + #include <linux/wl12xx.h> + #include <linux/pm_runtime.h> + #include <linux/printk.h> +@@ -214,6 +214,43 @@ static struct wl1271_if_operations sdio_ + .set_block_size = wl1271_sdio_set_block_size, + }; + ++static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev) ++{ ++ struct wl12xx_platform_data *pdata; ++ struct device_node *np = dev->of_node; ++ ++ if (!np) { ++ np = of_find_matching_node(NULL, dev->driver->of_match_table); ++ if (!np) { ++ dev_notice(dev, "device tree node not available\n"); ++ pdata = ERR_PTR(-ENODEV); ++ goto out; ++ } ++ } ++ ++ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); ++ if (!pdata) { ++ dev_err(dev, "can't allocate platform data\n"); ++ pdata = ERR_PTR(-ENODEV); ++ goto out; ++ } ++ ++ pdata->irq = irq_of_parse_and_map(np, 0); ++ if (pdata->irq < 0) { ++ dev_err(dev, "can't get interrupt gpio from the device tree\n"); ++ goto out_free; ++ } ++ ++ goto out; ++ ++out_free: ++ kfree(pdata); ++ pdata = ERR_PTR(-ENODEV); ++ ++out: ++ return pdata; ++} ++ + static int wl1271_probe(struct sdio_func *func, + const struct sdio_device_id *id) + { +@@ -248,11 +285,22 @@ static int wl1271_probe(struct sdio_func + /* Use block mode for transferring over one block size of data */ + func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; + ++ /* The pdata allocated here is freed when the device is freed, ++ * so we don't need an additional out label to free it in case ++ * of error further on. ++ */ ++ ++ /* Try to get legacy platform data from the board file */ + pdev_data->pdata = wl12xx_get_platform_data(); + if (IS_ERR(pdev_data->pdata)) { +- ret = PTR_ERR(pdev_data->pdata); +- dev_err(glue->dev, "missing wlan platform data: %d\n", ret); +- goto out_free_glue; ++ dev_info(&func->dev, ++ "legacy platform data not found, trying device tree\n"); ++ ++ pdev_data->pdata = wlcore_get_pdata_from_of(&func->dev); ++ if (IS_ERR(pdev_data->pdata)) { ++ dev_err(&func->dev, "can't get platform data\n"); ++ goto out_free_glue; ++ } + } + + /* if sdio can keep power while host is suspended, enable wow */ +@@ -386,16 +434,25 @@ static const struct dev_pm_ops wl1271_sd + }; + #endif + ++static const struct of_device_id wlcore_sdio_of_match_table[] = { ++ { .compatible = "ti,wilink6" }, ++ { .compatible = "ti,wilink7" }, ++ { .compatible = "ti,wilink8" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, wlcore_sdio_of_match_table); ++ + static struct sdio_driver wl1271_sdio_driver = { + .name = "wl1271_sdio", + .id_table = wl1271_devices, + .probe = wl1271_probe, + .remove = wl1271_remove, +-#ifdef CONFIG_PM + .drv = { ++#ifdef CONFIG_PM + .pm = &wl1271_sdio_pm_ops, +- }, + #endif ++ .of_match_table = of_match_ptr(wlcore_sdio_of_match_table), ++ }, + }; + + static int __init wl1271_init(void) |