Split wireless power/radio control out of switch.c

Chipset control of wireless power uses the new API instead of overriding
the wireless power itself.

Refactor board-specific support for it to just a few config #defines
instead of board-specific functions.  This makes some assumptions
about the polarity of the enable signals.  Not making those
assumptions would require defining an array of structs or some other
heavier-weight board-specific info.  Since the assumptions hold for
all current boards, let's make them now because this is a step in the
right direction, and reserve doing something more general until we
actually have a use case for it (so we build in just the flexibility
we need).

BUG=chrome-os-partner:18343
BRANCH=none
TEST=build all platforms; see that link wifi turns on at boot and off at
     shutdown (verify via 'gpioget' from EC console)

Change-Id: Ic036e76158198d2d5e3dd244c3c7b9b1e8d62982
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/61608
Reviewed-by: Bill Richardson <wfrichar@chromium.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/common/wireless.c b/common/wireless.c
new file mode 100644
index 0000000000..2344f08cd5
--- /dev/null
+++ b/common/wireless.c
@@ -0,0 +1,46 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Wireless power management */
+
+#include "common.h"
+#include "gpio.h"
+#include "host_command.h"
+
+void wireless_enable(int flags)
+{
+#ifdef WIRELESS_GPIO_WLAN
+	gpio_set_level(WIRELESS_GPIO_WLAN,
+		       flags & EC_WIRELESS_SWITCH_WLAN);
+#endif
+
+#ifdef WIRELESS_GPIO_WWAN
+	gpio_set_level(WIRELESS_GPIO_WWAN,
+		       flags & EC_WIRELESS_SWITCH_WWAN);
+#endif
+
+#ifdef WIRELESS_GPIO_BLUETOOTH
+	gpio_set_level(WIRELESS_GPIO_BLUETOOTH,
+		       flags & EC_WIRELESS_SWITCH_BLUETOOTH);
+#endif
+
+#ifdef WIRELESS_GPIO_WLAN_POWER
+	gpio_set_level(WIRELESS_GPIO_WLAN_POWER,
+		       flags & EC_WIRELESS_SWITCH_WLAN_POWER);
+#endif
+
+}
+
+static int wireless_enable_cmd(struct host_cmd_handler_args *args)
+{
+	const struct ec_params_switch_enable_wireless *p = args->params;
+
+	wireless_enable(p->enabled);
+
+	return EC_RES_SUCCESS;
+}
+DECLARE_HOST_COMMAND(EC_CMD_SWITCH_ENABLE_WIRELESS,
+		     wireless_enable_cmd,
+		     EC_VER_MASK(0));