b43: Add LP-PHY template

This adds template code for the LP-PHY.
No actual functionality is implemented.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/Kconfig

@@ -80,6 +80,18 @@ config B43_NPHY
 
 	  SAY N.
 
+config B43_PHY_LP
+	bool "IEEE 802.11g LP-PHY support (BROKEN)"
+	depends on B43 && EXPERIMENTAL && BROKEN
+	---help---
+	  Support for the LP-PHY.
+	  The LP-PHY is an IEEE 802.11g based PHY built into some notebooks
+	  and embedded devices.
+
+	  THIS IS BROKEN AND DOES NOT WORK YET.
+
+	  SAY N.
+
 # This config option automatically enables b43 LEDS support,
 # if it's possible.
 config B43_LEDS

drivers/net/wireless/b43/Makefile

@@ -5,6 +5,7 @@ b43-y				+= phy_common.o
 b43-y				+= phy_g.o
 b43-y				+= phy_a.o
 b43-$(CONFIG_B43_NPHY)		+= phy_n.o
+b43-$(CONFIG_B43_PHY_LP)	+= phy_lp.o
 b43-y				+= sysfs.o
 b43-y				+= xmit.o
 b43-y				+= lo.o

drivers/net/wireless/b43/phy_common.c

@@ -30,6 +30,7 @@
 #include "phy_g.h"
 #include "phy_a.h"
 #include "phy_n.h"
+#include "phy_lp.h"
 #include "b43.h"
 #include "main.h"
 
@@ -54,7 +55,9 @@ int b43_phy_operations_setup(struct b43_wldev *dev)
 #endif
 		break;
 	case B43_PHYTYPE_LP:
-		/* FIXME: Not yet */
+#ifdef CONFIG_B43_PHY_LP
+		phy->ops = &b43_phyops_lp;
+#endif
 		break;
 	}
 	if (B43_WARN_ON(!phy->ops))

drivers/net/wireless/b43/phy_common.h

@@ -165,6 +165,7 @@ struct b43_phy_operations {
 struct b43_phy_a;
 struct b43_phy_g;
 struct b43_phy_n;
+struct b43_phy_lp;
 
 struct b43_phy {
 	/* Hardware operation callbacks. */
@@ -185,6 +186,8 @@ struct b43_phy {
 		struct b43_phy_g *g;
 		/* N-PHY specific information */
 		struct b43_phy_n *n;
+		/* LP-PHY specific information */
+		struct b43_phy_lp *lp;
 	};
 
 	/* Band support flags. */

drivers/net/wireless/b43/phy_lp.c

+/*
+
+  Broadcom B43 wireless driver
+  IEEE 802.11g LP-PHY driver
+
+  Copyright (c) 2008 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "phy_lp.h"
+#include "phy_common.h"
+
+
+static int b43_lpphy_op_allocate(struct b43_wldev *dev)
+{
+	struct b43_phy_lp *lpphy;
+
+	lpphy = kzalloc(sizeof(*lpphy), GFP_KERNEL);
+	if (!lpphy)
+		return -ENOMEM;
+	dev->phy.lp = lpphy;
+
+	//TODO
+
+	return 0;
+}
+
+static int b43_lpphy_op_init(struct b43_wldev *dev)
+{
+	struct b43_phy_lp *lpphy = dev->phy.lp;
+
+	//TODO
+	lpphy->initialised = 1;
+
+	return 0;
+}
+
+static void b43_lpphy_op_exit(struct b43_wldev *dev)
+{
+	struct b43_phy_lp *lpphy = dev->phy.lp;
+
+	if (lpphy->initialised) {
+		//TODO
+		lpphy->initialised = 0;
+	}
+
+	kfree(lpphy);
+	dev->phy.lp = NULL;
+}
+
+static u16 b43_lpphy_op_read(struct b43_wldev *dev, u16 reg)
+{
+	//TODO
+	return 0;
+}
+
+static void b43_lpphy_op_write(struct b43_wldev *dev, u16 reg, u16 value)
+{
+	//TODO
+}
+
+static u16 b43_lpphy_op_radio_read(struct b43_wldev *dev, u16 reg)
+{
+	//TODO
+	return 0;
+}
+
+static void b43_lpphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value)
+{
+	/* Register 1 is a 32-bit register. */
+	B43_WARN_ON(reg == 1);
+
+	//TODO
+}
+
+static void b43_lpphy_op_software_rfkill(struct b43_wldev *dev,
+					 enum rfkill_state state)
+{
+	//TODO
+}
+
+static int b43_lpphy_op_switch_channel(struct b43_wldev *dev,
+				       unsigned int new_channel)
+{
+	//TODO
+	return 0;
+}
+
+static unsigned int b43_lpphy_op_get_default_chan(struct b43_wldev *dev)
+{
+	return 1; /* Default to channel 1 */
+}
+
+static void b43_lpphy_op_set_rx_antenna(struct b43_wldev *dev, int antenna)
+{
+	//TODO
+}
+
+static void b43_lpphy_op_adjust_txpower(struct b43_wldev *dev)
+{
+	//TODO
+}
+
+static enum b43_txpwr_result b43_lpphy_op_recalc_txpower(struct b43_wldev *dev,
+							 bool ignore_tssi)
+{
+	//TODO
+	return B43_TXPWR_RES_DONE;
+}
+
+
+const struct b43_phy_operations b43_phyops_lp = {
+	.allocate		= b43_lpphy_op_allocate,
+	.init			= b43_lpphy_op_init,
+	.exit			= b43_lpphy_op_exit,
+	.phy_read		= b43_lpphy_op_read,
+	.phy_write		= b43_lpphy_op_write,
+	.radio_read		= b43_lpphy_op_radio_read,
+	.radio_write		= b43_lpphy_op_radio_write,
+	.software_rfkill	= b43_lpphy_op_software_rfkill,
+	.switch_channel		= b43_lpphy_op_switch_channel,
+	.get_default_chan	= b43_lpphy_op_get_default_chan,
+	.set_rx_antenna		= b43_lpphy_op_set_rx_antenna,
+	.recalc_txpower		= b43_lpphy_op_recalc_txpower,
+	.adjust_txpower		= b43_lpphy_op_adjust_txpower,
+};

drivers/net/wireless/b43/phy_lp.h

+#ifndef LINUX_B43_PHY_LP_H_
+#define LINUX_B43_PHY_LP_H_
+
+/* Definitions for the LP-PHY */
+
+struct b43_phy_lp {
+	bool initialised;
+};
+
+
+struct b43_phy_operations;
+extern const struct b43_phy_operations b43_phyops_lp;
+
+#endif /* LINUX_B43_PHY_LP_H_ */