wl1271: make ref_clock configurable by board

The wl1271 device is using a reference clock that may change
between board to board.

Make the ref_clock parameter configurable by board settings
instead of having a hard coded value in the sources.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index faa5925..4134f44 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -330,6 +330,7 @@ struct wl1271 {
 
        void (*set_power)(bool enable);
        int irq;
+       int ref_clock;
 
        spinlock_t wl_lock;
 

diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c
index f36430b..fc21db8 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.c
@@ -457,17 +457,20 @@ int wl1271_boot(struct wl1271 *wl)
 {
        int ret = 0;
        u32 tmp, clk, pause;
+       int ref_clock = wl->ref_clock;
 
        wl1271_boot_hw_version(wl);
 
-       if (REF_CLOCK == 0 || REF_CLOCK == 2 || REF_CLOCK == 4)
+       if (ref_clock == 0 || ref_clock == 2 || ref_clock == 4)
                /* ref clk: 19.2/38.4/38.4-XTAL */
                clk = 0x3;
-       else if (REF_CLOCK == 1 || REF_CLOCK == 3)
+       else if (ref_clock == 1 || ref_clock == 3)
                /* ref clk: 26/52 */
                clk = 0x5;
+       else
+               return -EINVAL;
 
-       if (REF_CLOCK != 0) {
+       if (ref_clock != 0) {
                u16 val;
                /* Set clock type (open drain) */
                val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE);
@@ -516,7 +519,7 @@ int wl1271_boot(struct wl1271 *wl)
        wl1271_debug(DEBUG_BOOT, "clk2 0x%x", clk);
 
        /* 2 */
-       clk |= (REF_CLOCK << 1) << 4;
+       clk |= (ref_clock << 1) << 4;
        wl1271_write32(wl, DRPW_SCRATCH_START, clk);
 
        wl1271_set_partition(wl, &part_table[PART_WORK]);

diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.h b/drivers/net/wireless/wl12xx/wl1271_boot.h
index f829699..f73b0b1 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_boot.h
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.h
@@ -46,7 +46,6 @@ struct wl1271_static_data {
 /* delay between retries */
 #define INIT_LOOP_DELAY 50
 
-#define REF_CLOCK            2
 #define WU_COUNTER_PAUSE_VAL 0x3FF
 #define WELP_ARM_COMMAND_VAL 0x4
 

diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index 987ecdc..f2f0466 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -234,6 +234,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
        }
 
        wl->irq = wlan_data->irq;
+       wl->ref_clock = wlan_data->board_ref_clock;
 
        ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
        if (ret < 0) {

diff --git a/drivers/net/wireless/wl12xx/wl1271_spi.c b/drivers/net/wireless/wl12xx/wl1271_spi.c
index de56d8d..ced0a9e 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_spi.c
+++ b/drivers/net/wireless/wl12xx/wl1271_spi.c
@@ -372,6 +372,8 @@ static int __devinit wl1271_probe(struct spi_device *spi)
                goto out_free;
        }
 
+       wl->ref_clock = pdata->board_ref_clock;
+
        wl->irq = spi->irq;
        if (wl->irq < 0) {
                wl1271_error("irq missing in platform data");

diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index bd70563..95deae3 100644 (file)
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -29,6 +29,7 @@ struct wl12xx_platform_data {
        /* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
        int irq;
        bool use_eeprom;
+       int board_ref_clock;
 };
 
 int wl12xx_set_platform_data(const struct wl12xx_platform_data *data);