target/linux/omap/patches-3.12/905-wlcore-sdio-add-wilink-clock-providers.patch

   1 Add refclock and tcxoclock as clock providers in WiLink.  These clocks
   2 are not accesible outside the WiLink module, but they are registered
   3 in the clock framework anyway.  Only the WiLink chip consumes these
   4 clocks.
   5
   6 In theory, the WiLink chip could be connected to external clocks
   7 instead of using these internal clocks, so make the clock consumer
   8 code generic enough.  If external clocks are used, then the internal
   9 clock device tree nodes are not necessary, but the external ones must
  10 be specified.
  11
  12 Signed-off-by: Luciano Coelho <coelho@ti.com>
  13 Reviewed-by: Felipe Balbi <balbi@ti.com>
  14
  15 ---
  16 drivers/net/wireless/ti/wlcore/sdio.c | 9 +++++++++
  17  1 file changed, 9 insertions(+)
  18
  19 --- a/drivers/net/wireless/ti/wlcore/sdio.c
  20 +++ b/drivers/net/wireless/ti/wlcore/sdio.c
  21 @@ -34,6 +34,7 @@
  22  #include <linux/wl12xx.h>
  23  #include <linux/pm_runtime.h>
  24  #include <linux/printk.h>
  25 +#include <linux/clk-provider.h>
  26
  27  #include "wlcore.h"
  28  #include "wl12xx_80211.h"
  29 @@ -214,10 +215,15 @@ static struct wl1271_if_operations sdio_
  30         .set_block_size = wl1271_sdio_set_block_size,
  31  };
  32
  33 +static const struct of_device_id wlcore_sdio_of_clk_match_table[] = {
  34 +       { .compatible = "ti,wilink-clock" },
  35 +};
  36 +
  37  static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
  38  {
  39         struct wl12xx_platform_data *pdata;
  40         struct device_node *np = dev->of_node;
  41 +       struct device_node *clock_node;
  42
  43         if (!np) {
  44                 np = of_find_matching_node(NULL, dev->driver->of_match_table);
  45 @@ -241,6 +247,9 @@ static struct wl12xx_platform_data *wlco
  46                 goto out_free;
  47         }
  48
  49 +       for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table)
  50 +               of_fixed_clk_setup(clock_node);
  51 +
  52         goto out;
  53
  54  out_free: