wl12xx: FM WLAN coexistence

Add support to FM WLAN coexistence (STA only).  Some WiFi harmonics
may interfere with FM operation, to avoid this problem special
coexistence techniques are activated around some FM frequencies.

Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/acx.h b/drivers/net/wireless/wl12xx/acx.h
index 942908cd53a..2dde0346e95 100644
--- a/drivers/net/wireless/wl12xx/acx.h
+++ b/drivers/net/wireless/wl12xx/acx.h
@@ -1179,6 +1179,65 @@ struct wl1271_acx_inconnection_sta {
 	u8 padding1[2];
 } __packed;
 
+/*
+ * ACX_FM_COEX_CFG
+ * set the FM co-existence parameters.
+ */
+struct wl1271_acx_fm_coex {
+	struct acx_header header;
+	/* enable(1) / disable(0) the FM Coex feature */
+	u8 enable;
+	/*
+	 * Swallow period used in COEX PLL swallowing mechanism.
+	 * 0xFF = use FW default
+	 */
+	u8 swallow_period;
+	/*
+	 * The N divider used in COEX PLL swallowing mechanism for Fref of
+	 * 38.4/19.2 Mhz. 0xFF = use FW default
+	 */
+	u8 n_divider_fref_set_1;
+	/*
+	 * The N divider used in COEX PLL swallowing mechanism for Fref of
+	 * 26/52 Mhz. 0xFF = use FW default
+	 */
+	u8 n_divider_fref_set_2;
+	/*
+	 * The M divider used in COEX PLL swallowing mechanism for Fref of
+	 * 38.4/19.2 Mhz. 0xFFFF = use FW default
+	 */
+	__le16 m_divider_fref_set_1;
+	/*
+	 * The M divider used in COEX PLL swallowing mechanism for Fref of
+	 * 26/52 Mhz. 0xFFFF = use FW default
+	 */
+	__le16 m_divider_fref_set_2;
+	/*
+	 * The time duration in uSec required for COEX PLL to stabilize.
+	 * 0xFFFFFFFF = use FW default
+	 */
+	__le32 coex_pll_stabilization_time;
+	/*
+	 * The time duration in uSec required for LDO to stabilize.
+	 * 0xFFFFFFFF = use FW default
+	 */
+	__le16 ldo_stabilization_time;
+	/*
+	 * The disturbed frequency band margin around the disturbed frequency
+	 * center (single sided).
+	 * For example, if 2 is configured, the following channels will be
+	 * considered disturbed channel:
+	 *   80 +- 0.1 MHz, 91 +- 0.1 MHz, 98 +- 0.1 MHz, 102 +- 0.1 MH
+	 * 0xFF = use FW default
+	 */
+	u8 fm_disturbed_band_margin;
+	/*
+	 * The swallow clock difference of the swallowing mechanism.
+	 * 0xFF = use FW default
+	 */
+	u8 swallow_clk_diff;
+} __packed;
+
 enum {
 	ACX_WAKE_UP_CONDITIONS      = 0x0002,
 	ACX_MEM_CFG                 = 0x0003,
@@ -1208,6 +1267,7 @@ enum {
 	ACX_BCN_DTIM_OPTIONS        = 0x0031,
 	ACX_SG_ENABLE               = 0x0032,
 	ACX_SG_CFG                  = 0x0033,
+	ACX_FM_COEX_CFG             = 0x0034,
 	ACX_BEACON_FILTER_TABLE     = 0x0038,
 	ACX_ARP_IP_FILTER           = 0x0039,
 	ACX_ROAMING_STATISTICS_TBL  = 0x003B,
@@ -1318,5 +1378,6 @@ int wl1271_acx_ap_max_tx_retry(struct wl1271 *wl);
 int wl1271_acx_sta_max_tx_retry(struct wl1271 *wl);
 int wl1271_acx_config_ps(struct wl1271 *wl);
 int wl1271_acx_set_inconnection_sta(struct wl1271 *wl, u8 *addr);
+int wl1271_acx_fm_coex(struct wl1271 *wl);
 
 #endif /* __WL1271_ACX_H__ */