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94 lines
3.1 KiB
94 lines
3.1 KiB
Read the clock nodes from the device tree and use them to set the
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frequency for the refclock and the tcxo clock.
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Also, call sdio_set_drvdata() earlier, so the glue is already set in
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the driver data when we call wlcore_get_pdata_from_of() and we don't
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need to pass it as a parameter.
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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 | 36 +++++++++++++++++++++++++++++++++--
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1 file changed, 34 insertions(+), 2 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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@@ -53,6 +53,7 @@ static bool dump = false;
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struct wl12xx_sdio_glue {
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struct device *dev;
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struct platform_device *core;
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+ struct clk *refclock, *tcxoclock;
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};
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static const struct sdio_device_id wl1271_devices[] = {
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@@ -224,6 +225,7 @@ static struct wl12xx_platform_data *wlco
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struct wl12xx_platform_data *pdata;
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struct device_node *np = dev->of_node;
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struct device_node *clock_node;
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+ struct wl12xx_sdio_glue *glue = sdio_get_drvdata(dev_to_sdio_func(dev));
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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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@@ -250,6 +252,26 @@ static struct wl12xx_platform_data *wlco
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for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table)
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of_fixed_clk_setup(clock_node);
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+ /* TODO: make sure we have this when needed (ie. for WL6 and WL7) */
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+ glue->refclock = of_clk_get_by_name(np, "refclock");
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+ if (IS_ERR(glue->refclock)) {
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+ dev_err(dev, "couldn't find refclock on the device tree\n");
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+ glue->refclock = NULL;
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+ } else {
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+ clk_prepare_enable(glue->refclock);
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+ pdata->ref_clock_freq = clk_get_rate(glue->refclock);
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+ }
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+
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+ /* TODO: make sure we have this when needed (ie. for WL7) */
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+ glue->tcxoclock = of_clk_get_by_name(np, "tcxoclock");
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+ if (IS_ERR(glue->tcxoclock)) {
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+ dev_err(dev, "couldn't find tcxoclock on the device tree\n");
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+ glue->tcxoclock = NULL;
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+ } else {
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+ clk_prepare_enable(glue->tcxoclock);
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+ pdata->ref_clock_freq = clk_get_rate(glue->tcxoclock);
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+ }
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+
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goto out;
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out_free:
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@@ -294,6 +316,8 @@ 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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+ sdio_set_drvdata(func, glue);
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+
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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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@@ -319,8 +343,6 @@ static int wl1271_probe(struct sdio_func
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if (mmcflags & MMC_PM_KEEP_POWER)
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pdev_data->pwr_in_suspend = true;
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- sdio_set_drvdata(func, glue);
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-
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/* Tell PM core that we don't need the card to be powered now */
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pm_runtime_put_noidle(&func->dev);
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@@ -387,6 +409,16 @@ static void wl1271_remove(struct sdio_fu
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{
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struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
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+ if (glue->refclock) {
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+ clk_disable_unprepare(glue->refclock);
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+ clk_put(glue->refclock);
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+ }
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+
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+ if (glue->tcxoclock) {
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+ clk_disable_unprepare(glue->tcxoclock);
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+ clk_put(glue->tcxoclock);
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+ }
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+
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/* Undo decrement done above in wl1271_probe */
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pm_runtime_get_noresume(&func->dev);
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