Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / wireless / rt2x00 / rt2x00firmware.c

diff --git a/kernel/drivers/net/wireless/rt2x00/rt2x00firmware.c b/kernel/drivers/net/wireless/rt2x00/rt2x00firmware.c
new file mode 100644 (file)
index 0000000..5813300
--- /dev/null
+++ b/kernel/drivers/net/wireless/rt2x00/rt2x00firmware.c
@@ -0,0 +1,129 @@
+/*
+       Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+       Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
+       <http://rt2x00.serialmonkey.com>
+
+       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; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+       Module: rt2x00lib
+       Abstract: rt2x00 firmware loading routines.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
+{
+       struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
+       const struct firmware *fw;
+       char *fw_name;
+       int retval;
+
+       /*
+        * Read correct firmware from harddisk.
+        */
+       fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
+       if (!fw_name) {
+               rt2x00_err(rt2x00dev,
+                          "Invalid firmware filename\n"
+                          "Please file bug report to %s\n", DRV_PROJECT);
+               return -EINVAL;
+       }
+
+       rt2x00_info(rt2x00dev, "Loading firmware file '%s'\n", fw_name);
+
+       retval = request_firmware(&fw, fw_name, device);
+       if (retval) {
+               rt2x00_err(rt2x00dev, "Failed to request Firmware\n");
+               return retval;
+       }
+
+       if (!fw || !fw->size || !fw->data) {
+               rt2x00_err(rt2x00dev, "Failed to read Firmware\n");
+               release_firmware(fw);
+               return -ENOENT;
+       }
+
+       rt2x00_info(rt2x00dev, "Firmware detected - version: %d.%d\n",
+                   fw->data[fw->size - 4], fw->data[fw->size - 3]);
+       snprintf(rt2x00dev->hw->wiphy->fw_version,
+                       sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d",
+                       fw->data[fw->size - 4], fw->data[fw->size - 3]);
+
+       retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
+       switch (retval) {
+       case FW_OK:
+               break;
+       case FW_BAD_CRC:
+               rt2x00_err(rt2x00dev, "Firmware checksum error\n");
+               goto exit;
+       case FW_BAD_LENGTH:
+               rt2x00_err(rt2x00dev, "Invalid firmware file length (len=%zu)\n",
+                          fw->size);
+               goto exit;
+       case FW_BAD_VERSION:
+               rt2x00_err(rt2x00dev, "Current firmware does not support detected chipset\n");
+               goto exit;
+       }
+
+       rt2x00dev->fw = fw;
+
+       return 0;
+
+exit:
+       release_firmware(fw);
+
+       return -ENOENT;
+}
+
+int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
+{
+       int retval;
+
+       if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_FIRMWARE))
+               return 0;
+
+       if (!rt2x00dev->fw) {
+               retval = rt2x00lib_request_firmware(rt2x00dev);
+               if (retval)
+                       return retval;
+       }
+
+       /*
+        * Send firmware to the device.
+        */
+       retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
+                                                   rt2x00dev->fw->data,
+                                                   rt2x00dev->fw->size);
+
+       /*
+        * When the firmware is uploaded to the hardware the LED
+        * association status might have been triggered, for correct
+        * LED handling it should now be reset.
+        */
+       rt2x00leds_led_assoc(rt2x00dev, false);
+
+       return retval;
+}
+
+void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
+{
+       release_firmware(rt2x00dev->fw);
+       rt2x00dev->fw = NULL;
+}