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