wl18xx: implement hw op for setting blocks in hw_tx_desc

Add the 18xx variant to the HW Tx descriptor union and set the 18xx
specific values during Tx.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wl18xx/main.c

@@ -26,6 +26,7 @@
 #include "../wlcore/debug.h"
 #include "../wlcore/io.h"
 #include "../wlcore/acx.h"
+#include "../wlcore/tx.h"
 #include "../wlcore/boot.h"
 
 #include "reg.h"
@@ -312,12 +313,21 @@ static u32 wl18xx_calc_tx_blocks(struct wl1271 *wl, u32 len, u32 spare_blks)
 	return (len + blk_size - 1) / blk_size + spare_blks;
 }
 
+static void
+wl18xx_set_tx_desc_blocks(struct wl1271 *wl, struct wl1271_tx_hw_descr *desc,
+			  u32 blks, u32 spare_blks)
+{
+	desc->wl18xx_mem.total_mem_blocks = blks;
+	desc->wl18xx_mem.reserved = 0;
+}
+
 static struct wlcore_ops wl18xx_ops = {
 	.identify_chip	= wl18xx_identify_chip,
 	.boot		= wl18xx_boot,
 	.trigger_cmd	= wl18xx_trigger_cmd,
 	.ack_event	= wl18xx_ack_event,
 	.calc_tx_blocks = wl18xx_calc_tx_blocks,
+	.set_tx_desc_blocks = wl18xx_set_tx_desc_blocks,
 };
 
 int __devinit wl18xx_probe(struct platform_device *pdev)

drivers/net/wireless/ti/wlcore/tx.h

@@ -85,6 +85,19 @@ struct wl128x_tx_mem {
 	u8 extra_bytes;
 } __packed;
 
+struct wl18xx_tx_mem {
+	/*
+	 * Total number of memory blocks allocated by the host for
+	 * this packet.
+	 */
+	u8 total_mem_blocks;
+
+	/*
+	 * always zero
+	 */
+	u8 reserved;
+} __packed;
+
 /*
  * On wl128x based devices, when TX packets are aggregated, each packet
  * size must be aligned to the SDIO block size. The maximum block size
@@ -100,6 +113,7 @@ struct wl1271_tx_hw_descr {
 	union {
 		struct wl127x_tx_mem wl127x_mem;
 		struct wl128x_tx_mem wl128x_mem;
+		struct wl18xx_tx_mem wl18xx_mem;
 	} __packed;
 	/* Device time (in us) when the packet arrived to the driver */
 	__le32 start_time;