wl12xx: use frequency instead of enumerations for pdata clocks

Instead of defining an enumeration with the FW specific values for the
different clock rates, use the actual frequency instead.  Also add a
boolean to specify whether the clock is XTAL or not.

Change all board files to reflect this.

Signed-off-by: Luciano Coelho <luca@coelho.fi>
[Eliad - small fixes, update board file changes]
Signed-off-by: Eliad Peller <eliad@wizery.com>
Tested-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

5 files changed, 103 insertions, 44 deletions

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 916589ca8d44..853b941b710e 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1386,7 +1386,8 @@ static const short da850_wl12xx_pins[] __initconst = {
 static struct wl12xx_platform_data da850_wl12xx_wlan_data __initdata = {
         .irq                    = -1,
         .irq_trigger            = IRQ_TYPE_EDGE_RISING,
-        .board_ref_clock        = WL12XX_REFCLOCK_38,
+        .ref_clock_freq         = 38400000,
+        .ref_clock_xtal         = false,
 };
 
 static __init int da850_wl12xx_init(void)
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index e86fb0d55c59..cebdf8d0dc08 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -39,14 +39,14 @@ static struct twl4030_gpio_platform_data twl_gpio_auxdata;
 
 static struct wl12xx_platform_data wl12xx __initdata;
 
-static void __init __used legacy_init_wl12xx(unsigned ref_clock,
-                                             unsigned tcxo_clock,
+static void __init __used legacy_init_wl12xx(u32 ref_clock_freq,
+                                             u32 tcxo_clock_freq,
                                              int gpio)
 {
         int res;
 
-        wl12xx.board_ref_clock = ref_clock;
-        wl12xx.board_tcxo_clock = tcxo_clock;
+        wl12xx.ref_clock_freq = ref_clock_freq;
+        wl12xx.tcxo_clock_freq = tcxo_clock_freq;
         wl12xx.irq = gpio_to_irq(gpio);
         wl12xx.irq_trigger = IRQ_TYPE_LEVEL_HIGH;
 
@@ -57,8 +57,8 @@ static void __init __used legacy_init_wl12xx(unsigned ref_clock,
         }
 }
 #else
-static inline void legacy_init_wl12xx(unsigned ref_clock,
-                                      unsigned tcxo_clock,
+static inline void legacy_init_wl12xx(u32 ref_clock_freq,
+                                      u32 tcxo_clock_freq,
                                       int gpio)
 {
 }
@@ -130,7 +130,7 @@ static void __init omap3_sbc_t3730_twl_init(void)
 static void __init omap3_sbc_t3730_legacy_init(void)
 {
         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
+        legacy_init_wl12xx(38400000, 0, 136);
 }
 
 static void __init omap3_sbc_t3530_legacy_init(void)
@@ -175,12 +175,12 @@ static void __init omap3_igep0030_rev_g_legacy_init(void)
 static void __init omap3_evm_legacy_init(void)
 {
         hsmmc2_internal_input_clk();
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
+        legacy_init_wl12xx(38400000, 0, 149);
 }
 
 static void __init omap3_zoom_legacy_init(void)
 {
-        legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
+        legacy_init_wl12xx(26000000, 0, 162);
 }
 
 static void am35xx_enable_emac_int(void)
@@ -247,7 +247,7 @@ static void __init omap3_sbc_t3517_legacy_init(void)
         am35xx_emac_reset();
         hsmmc2_internal_input_clk();
         omap3_sbc_t3517_wifi_init();
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145);
+        legacy_init_wl12xx(38400000, 0, 145);
 }
 
 static void __init am3517_evm_legacy_init(void)
@@ -292,18 +292,17 @@ static void __init omap3_tao3530_legacy_init(void)
 #ifdef CONFIG_ARCH_OMAP4
 static void __init omap4_sdp_legacy_init(void)
 {
-        legacy_init_wl12xx(WL12XX_REFCLOCK_26,
-                           WL12XX_TCXOCLOCK_26, 53);
+        legacy_init_wl12xx(26000000, 26000000, 53);
 }
 
 static void __init omap4_panda_legacy_init(void)
 {
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
+        legacy_init_wl12xx(38400000, 0, 53);
 }
 
 static void __init var_som_om44_legacy_init(void)
 {
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 41);
+        legacy_init_wl12xx(38400000, 0, 41);
 }
 #endif
 
@@ -318,7 +317,7 @@ static struct iommu_platform_data omap4_iommu_pdata = {
 #ifdef CONFIG_SOC_AM33XX
 static void __init am335x_evmsk_legacy_init(void)
 {
-        legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
+        legacy_init_wl12xx(38400000, 0, 31);
 }
 #endif
 
diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 144d1f8ba473..b3f751f1e08f 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -1770,6 +1770,40 @@ wl12xx_iface_combinations[] = {
         },
 };
 
+static const struct wl12xx_clock wl12xx_refclock_table[] = {
+        { 19200000,     false,  WL12XX_REFCLOCK_19      },
+        { 26000000,     false,  WL12XX_REFCLOCK_26      },
+        { 26000000,     true,   WL12XX_REFCLOCK_26_XTAL },
+        { 38400000,     false,  WL12XX_REFCLOCK_38      },
+        { 38400000,     true,   WL12XX_REFCLOCK_38_XTAL },
+        { 52000000,     false,  WL12XX_REFCLOCK_52      },
+        { 0,            false,  0 }
+};
+
+static const struct wl12xx_clock wl12xx_tcxoclock_table[] = {
+        { 16368000,     true,   WL12XX_TCXOCLOCK_16_368 },
+        { 16800000,     true,   WL12XX_TCXOCLOCK_16_8   },
+        { 19200000,     true,   WL12XX_TCXOCLOCK_19_2   },
+        { 26000000,     true,   WL12XX_TCXOCLOCK_26     },
+        { 32736000,     true,   WL12XX_TCXOCLOCK_32_736 },
+        { 33600000,     true,   WL12XX_TCXOCLOCK_33_6   },
+        { 38400000,     true,   WL12XX_TCXOCLOCK_38_4   },
+        { 52000000,     true,   WL12XX_TCXOCLOCK_52     },
+        { 0,            false,  0 }
+};
+
+static int wl12xx_get_clock_idx(const struct wl12xx_clock *table,
+                                u32 freq, bool xtal)
+{
+        int i;
+
+        for (i = 0; table[i].freq != 0; i++)
+                if ((table[i].freq == freq) && (table[i].xtal == xtal))
+                        return table[i].hw_idx;
+
+        return -EINVAL;
+}
+
 static int wl12xx_setup(struct wl1271 *wl)
 {
         struct wl12xx_priv *priv = wl->priv;
@@ -1799,7 +1833,17 @@ static int wl12xx_setup(struct wl1271 *wl)
         wl12xx_conf_init(wl);
 
         if (!fref_param) {
-                priv->ref_clock = pdata->board_ref_clock;
+                priv->ref_clock = wl12xx_get_clock_idx(wl12xx_refclock_table,
+                                                       pdata->ref_clock_freq,
+                                                       pdata->ref_clock_xtal);
+                if (priv->ref_clock < 0) {
+                        wl1271_error("Invalid ref_clock frequency (%d Hz, %s)",
+                                     pdata->ref_clock_freq,
+                                     pdata->ref_clock_xtal ?
+                                     "XTAL" : "not XTAL");
+
+                        return priv->ref_clock;
+                }
         } else {
                 if (!strcmp(fref_param, "19.2"))
                         priv->ref_clock = WL12XX_REFCLOCK_19;
@@ -1817,9 +1861,17 @@ static int wl12xx_setup(struct wl1271 *wl)
                         wl1271_error("Invalid fref parameter %s", fref_param);
         }
 
-        if (!tcxo_param) {
-                priv->tcxo_clock = pdata->board_tcxo_clock;
-        } else {
+        if (!tcxo_param && pdata->tcxo_clock_freq) {
+                priv->tcxo_clock = wl12xx_get_clock_idx(wl12xx_tcxoclock_table,
+                                                        pdata->tcxo_clock_freq,
+                                                        true);
+                if (priv->tcxo_clock < 0) {
+                        wl1271_error("Invalid tcxo_clock frequency (%d Hz)",
+                                     pdata->tcxo_clock_freq);
+
+                        return priv->tcxo_clock;
+                }
+        } else if (tcxo_param) {
                 if (!strcmp(tcxo_param, "19.2"))
                         priv->tcxo_clock = WL12XX_TCXOCLOCK_19_2;
                 else if (!strcmp(tcxo_param, "26"))
diff --git a/drivers/net/wireless/ti/wl12xx/wl12xx.h b/drivers/net/wireless/ti/wl12xx/wl12xx.h
index 75c92658bfea..5952e99ace1b 100644
--- a/drivers/net/wireless/ti/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h
@@ -82,6 +82,34 @@ struct wl12xx_priv {
         struct wl127x_rx_mem_pool_addr *rx_mem_addr;
 };
 
+/* Reference clock values */
+enum {
+        WL12XX_REFCLOCK_19      = 0, /* 19.2 MHz */
+        WL12XX_REFCLOCK_26      = 1, /* 26 MHz */
+        WL12XX_REFCLOCK_38      = 2, /* 38.4 MHz */
+        WL12XX_REFCLOCK_52      = 3, /* 52 MHz */
+        WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
+        WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
+};
+
+/* TCXO clock values */
+enum {
+        WL12XX_TCXOCLOCK_19_2   = 0, /* 19.2MHz */
+        WL12XX_TCXOCLOCK_26     = 1, /* 26 MHz */
+        WL12XX_TCXOCLOCK_38_4   = 2, /* 38.4MHz */
+        WL12XX_TCXOCLOCK_52     = 3, /* 52 MHz */
+        WL12XX_TCXOCLOCK_16_368 = 4, /* 16.368 MHz */
+        WL12XX_TCXOCLOCK_32_736 = 5, /* 32.736 MHz */
+        WL12XX_TCXOCLOCK_16_8   = 6, /* 16.8 MHz */
+        WL12XX_TCXOCLOCK_33_6   = 7, /* 33.6 MHz */
+};
+
+struct wl12xx_clock {
+        u32     freq;
+        bool    xtal;
+        u8      hw_idx;
+};
+
 struct wl12xx_fw_packet_counters {
         /* Cumulative counter of released packets per AC */
         u8 tx_released_pkts[NUM_TX_QUEUES];
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index 3876b67dbcbc..eea1e6dac4be 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -26,28 +26,6 @@
 
 #include <linux/err.h>
 
-/* Reference clock values */
-enum {
-        WL12XX_REFCLOCK_19      = 0, /* 19.2 MHz */
-        WL12XX_REFCLOCK_26      = 1, /* 26 MHz */
-        WL12XX_REFCLOCK_38      = 2, /* 38.4 MHz */
-        WL12XX_REFCLOCK_52      = 3, /* 52 MHz */
-        WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
-        WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
-};
-
-/* TCXO clock values */
-enum {
-        WL12XX_TCXOCLOCK_19_2   = 0, /* 19.2MHz */
-        WL12XX_TCXOCLOCK_26     = 1, /* 26 MHz */
-        WL12XX_TCXOCLOCK_38_4   = 2, /* 38.4MHz */
-        WL12XX_TCXOCLOCK_52     = 3, /* 52 MHz */
-        WL12XX_TCXOCLOCK_16_368 = 4, /* 16.368 MHz */
-        WL12XX_TCXOCLOCK_32_736 = 5, /* 32.736 MHz */
-        WL12XX_TCXOCLOCK_16_8   = 6, /* 16.8 MHz */
-        WL12XX_TCXOCLOCK_33_6   = 7, /* 33.6 MHz */
-};
-
 struct wl1251_platform_data {
         int power_gpio;
         /* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
@@ -58,8 +36,9 @@ struct wl1251_platform_data {
 struct wl12xx_platform_data {
         int irq;
         u32 irq_trigger;
-        int board_ref_clock;
-        int board_tcxo_clock;
+        bool ref_clock_xtal;    /* specify whether the clock is XTAL or not */
+        u32 ref_clock_freq;     /* in Hertz */
+        u32 tcxo_clock_freq;    /* in Hertz, tcxo is always XTAL */
         bool pwr_in_suspend;
 };