--- /dev/null
+/*
+ * This file is part of stlc45xx
+ *
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Contact: Kalle Valo <kalle.valo@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include "stlc45xx.h"
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/spi/spi.h>
+#include <linux/etherdevice.h>
+#include <linux/gpio.h>
+#include <linux/moduleparam.h>
+
+#include "stlc45xx_lmac.h"
+
+/*
+ * gpios should be handled in board files and provided via platform data,
+ * but because it's currently impossible for stlc45xx to have a header file
+ * in include/linux, let's use module paramaters for now
+ */
+static int stlc45xx_gpio_power = 97;
+module_param(stlc45xx_gpio_power, int, 0444);
+MODULE_PARM_DESC(stlc45xx_gpio_power, "stlc45xx gpio number for power line");
+
+static int stlc45xx_gpio_irq = 87;
+module_param(stlc45xx_gpio_irq, int, 0444);
+MODULE_PARM_DESC(stlc45xx_gpio_irq, "stlc45xx gpio number for irq line");
+
+static const u8 default_cal_channels[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6c, 0x09,
+ 0x00, 0x00, 0xc9, 0xff, 0xd8, 0xff, 0x00, 0x00, 0x00, 0x01, 0x10,
+ 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0xe0, 0x00, 0xe0, 0x00,
+ 0xe0, 0x00, 0xe0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0,
+ 0x00, 0x54, 0x01, 0xab, 0xf6, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42,
+ 0xc0, 0x42, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00,
+ 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x22, 0x01, 0x37, 0xa9,
+ 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0x00, 0xbc, 0x00,
+ 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc,
+ 0x00, 0xbc, 0xfb, 0x00, 0xca, 0x79, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0,
+ 0x2b, 0xc0, 0x2b, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4,
+ 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0xd0, 0x00, 0x5d,
+ 0x54, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0x00, 0xaa,
+ 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00,
+ 0xaa, 0x00, 0xaa, 0xa7, 0x00, 0xa9, 0x3d, 0xc0, 0x17, 0xc0, 0x17,
+ 0xc0, 0x17, 0xc0, 0x17, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00,
+ 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x7a, 0x00,
+ 0x06, 0x2c, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0x00,
+ 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96,
+ 0x00, 0x96, 0x00, 0x96, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x06, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x71, 0x09, 0x00, 0x00, 0xc9, 0xff, 0xd8,
+ 0xff, 0x00, 0x00, 0x00, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01,
+ 0x10, 0x01, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xd0,
+ 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0x54, 0x01, 0xab, 0xf6,
+ 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0x00, 0xcb, 0x00,
+ 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb,
+ 0x00, 0xcb, 0x22, 0x01, 0x37, 0xa9, 0xc0, 0x33, 0xc0, 0x33, 0xc0,
+ 0x33, 0xc0, 0x33, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc,
+ 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0xfb, 0x00, 0xca,
+ 0x79, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0x00, 0xb4,
+ 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00,
+ 0xb4, 0x00, 0xb4, 0xd0, 0x00, 0x5d, 0x54, 0xc0, 0x21, 0xc0, 0x21,
+ 0xc0, 0x21, 0xc0, 0x21, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00,
+ 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0xa7, 0x00,
+ 0xa9, 0x3d, 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17, 0x00,
+ 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0,
+ 0x00, 0xa0, 0x00, 0xa0, 0x7a, 0x00, 0x06, 0x2c, 0xc0, 0x0d, 0xc0,
+ 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96,
+ 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x80, 0x80,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76,
+ 0x09, 0x00, 0x00, 0xc9, 0xff, 0xd8, 0xff, 0x00, 0x00, 0x00, 0x01,
+ 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0xf0, 0x00, 0xf0,
+ 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00,
+ 0xd0, 0x00, 0x54, 0x01, 0xab, 0xf6, 0xc0, 0x42, 0xc0, 0x42, 0xc0,
+ 0x42, 0xc0, 0x42, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb,
+ 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x22, 0x01, 0x37,
+ 0xa9, 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0x00, 0xbc,
+ 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00,
+ 0xbc, 0x00, 0xbc, 0xfb, 0x00, 0xca, 0x79, 0xc0, 0x2b, 0xc0, 0x2b,
+ 0xc0, 0x2b, 0xc0, 0x2b, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00,
+ 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0xd0, 0x00,
+ 0x5d, 0x54, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0x00,
+ 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa,
+ 0x00, 0xaa, 0x00, 0xaa, 0xa7, 0x00, 0xa9, 0x3d, 0xc0, 0x17, 0xc0,
+ 0x17, 0xc0, 0x17, 0xc0, 0x17, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0,
+ 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x7a,
+ 0x00, 0x06, 0x2c, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d,
+ 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00,
+ 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x06, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x7b, 0x09, 0x00, 0x00, 0xc9, 0xff,
+ 0xd8, 0xff, 0x00, 0x00, 0x00, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10,
+ 0x01, 0x10, 0x01, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00,
+ 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0x54, 0x01, 0xab,
+ 0xf6, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0x00, 0xcb,
+ 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00,
+ 0xcb, 0x00, 0xcb, 0x22, 0x01, 0x37, 0xa9, 0xc0, 0x33, 0xc0, 0x33,
+ 0xc0, 0x33, 0xc0, 0x33, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00,
+ 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0xfb, 0x00,
+ 0xca, 0x79, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0x00,
+ 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4,
+ 0x00, 0xb4, 0x00, 0xb4, 0xd0, 0x00, 0x5d, 0x54, 0xc0, 0x21, 0xc0,
+ 0x21, 0xc0, 0x21, 0xc0, 0x21, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa,
+ 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0xa7,
+ 0x00, 0xa9, 0x3d, 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17,
+ 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00,
+ 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x7a, 0x00, 0x06, 0x2c, 0xc0, 0x0d,
+ 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0x00, 0x96, 0x00, 0x96, 0x00,
+ 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x80,
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x80, 0x09, 0x00, 0x00, 0xc9, 0xff, 0xd8, 0xff, 0x00, 0x00, 0x00,
+ 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0xf0, 0x00,
+ 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0,
+ 0x00, 0xd0, 0x00, 0x54, 0x01, 0xab, 0xf6, 0xc0, 0x42, 0xc0, 0x42,
+ 0xc0, 0x42, 0xc0, 0x42, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00,
+ 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x22, 0x01,
+ 0x37, 0xa9, 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0xc0, 0x33, 0x00,
+ 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc,
+ 0x00, 0xbc, 0x00, 0xbc, 0xfb, 0x00, 0xca, 0x79, 0xc0, 0x2b, 0xc0,
+ 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4,
+ 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0xd0,
+ 0x00, 0x5d, 0x54, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21,
+ 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00,
+ 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0xa7, 0x00, 0xa9, 0x3d, 0xc0, 0x17,
+ 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17, 0x00, 0xa0, 0x00, 0xa0, 0x00,
+ 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0,
+ 0x7a, 0x00, 0x06, 0x2c, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0,
+ 0x0d, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96,
+ 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x06, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x09, 0x00, 0x00, 0xc9,
+ 0xff, 0xd8, 0xff, 0x00, 0x00, 0x00, 0x01, 0x10, 0x01, 0x10, 0x01,
+ 0x10, 0x01, 0x10, 0x01, 0xf0, 0x00, 0xf0, 0x00, 0xf0, 0x00, 0xf0,
+ 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0xd0, 0x00, 0x54, 0x01,
+ 0xab, 0xf6, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0xc0, 0x42, 0x00,
+ 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb, 0x00, 0xcb,
+ 0x00, 0xcb, 0x00, 0xcb, 0x22, 0x01, 0x37, 0xa9, 0xc0, 0x33, 0xc0,
+ 0x33, 0xc0, 0x33, 0xc0, 0x33, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc,
+ 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0x00, 0xbc, 0xfb,
+ 0x00, 0xca, 0x79, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b, 0xc0, 0x2b,
+ 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0x00,
+ 0xb4, 0x00, 0xb4, 0x00, 0xb4, 0xd0, 0x00, 0x5d, 0x54, 0xc0, 0x21,
+ 0xc0, 0x21, 0xc0, 0x21, 0xc0, 0x21, 0x00, 0xaa, 0x00, 0xaa, 0x00,
+ 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa,
+ 0xa7, 0x00, 0xa9, 0x3d, 0xc0, 0x17, 0xc0, 0x17, 0xc0, 0x17, 0xc0,
+ 0x17, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0,
+ 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x7a, 0x00, 0x06, 0x2c, 0xc0,
+ 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0xc0, 0x0d, 0x00, 0x96, 0x00, 0x96,
+ 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00, 0x96, 0x00,
+ 0x96, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06,
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+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00 };
+
+static const u8 default_cal_rssi[] = {
+ 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72,
+ 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00,
+ 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a,
+ 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe,
+ 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00,
+ 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01,
+ 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a,
+ 0x00, 0x00, 0x00, 0x0a, 0x01, 0x72, 0xfe, 0x1a, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+static void stlc45xx_tx_edcf(struct stlc45xx *stlc);
+static void stlc45xx_tx_setup(struct stlc45xx *stlc);
+static void stlc45xx_tx_scan(struct stlc45xx *stlc);
+static void stlc45xx_tx_psm(struct stlc45xx *stlc, bool enable);
+static int stlc45xx_tx_nullfunc(struct stlc45xx *stlc, bool powersave);
+static int stlc45xx_tx_pspoll(struct stlc45xx *stlc, bool powersave);
+
+static ssize_t stlc45xx_sysfs_show_cal_rssi(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(dev);
+ ssize_t len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ len = PAGE_SIZE;
+
+ mutex_lock(&stlc->mutex);
+
+ if (stlc->cal_rssi)
+ hex_dump_to_buffer(stlc->cal_rssi, RSSI_CAL_ARRAY_LEN, 16,
+ 2, buf, len, 0);
+ mutex_unlock(&stlc->mutex);
+
+ len = strlen(buf);
+
+ return len;
+}
+
+static ssize_t stlc45xx_sysfs_store_cal_rssi(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(dev);
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ if (count != RSSI_CAL_ARRAY_LEN) {
+ stlc45xx_error("invalid cal_rssi length: %d", count);
+ count = 0;
+ goto out_unlock;
+ }
+
+ kfree(stlc->cal_rssi);
+
+ stlc->cal_rssi = kmemdup(buf, RSSI_CAL_ARRAY_LEN, GFP_KERNEL);
+
+ if (!stlc->cal_rssi) {
+ stlc45xx_error("failed to allocate memory for cal_rssi");
+ count = 0;
+ goto out_unlock;
+ }
+
+ out_unlock:
+ mutex_unlock(&stlc->mutex);
+
+ return count;
+}
+
+static ssize_t stlc45xx_sysfs_show_cal_channels(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(dev);
+ ssize_t len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ len = PAGE_SIZE;
+
+ mutex_lock(&stlc->mutex);
+
+ if (stlc->cal_channels)
+ hex_dump_to_buffer(stlc->cal_channels, CHANNEL_CAL_ARRAY_LEN,
+ 16, 2, buf, len, 0);
+
+ mutex_unlock(&stlc->mutex);
+
+ len = strlen(buf);
+
+ return len;
+}
+
+static ssize_t stlc45xx_sysfs_store_cal_channels(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(dev);
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ if (count != CHANNEL_CAL_ARRAY_LEN) {
+ stlc45xx_error("invalid cal_channels size: %d ", count);
+ count = 0;
+ goto out_unlock;
+ }
+
+ kfree(stlc->cal_channels);
+
+ stlc->cal_channels = kmemdup(buf, count, GFP_KERNEL);
+
+ if (!stlc->cal_channels) {
+ stlc45xx_error("failed to allocate memory for cal_channels");
+ count = 0;
+ goto out_unlock;
+ }
+
+out_unlock:
+ mutex_unlock(&stlc->mutex);
+
+ return count;
+}
+
+static ssize_t stlc45xx_sysfs_show_tx_buf(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(dev);
+ struct txbuffer *entry;
+ ssize_t len = 0;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s()", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ list_for_each_entry(entry, &stlc->tx_sent, tx_list) {
+ len += sprintf(buf + len, "0x%x: 0x%x-0x%x\n",
+ entry->handle, entry->start,
+ entry->end);
+ }
+
+ mutex_unlock(&stlc->mutex);
+
+ return len;
+}
+
+static DEVICE_ATTR(cal_rssi, S_IRUGO | S_IWUSR,
+ stlc45xx_sysfs_show_cal_rssi,
+ stlc45xx_sysfs_store_cal_rssi);
+static DEVICE_ATTR(cal_channels, S_IRUGO | S_IWUSR,
+ stlc45xx_sysfs_show_cal_channels,
+ stlc45xx_sysfs_store_cal_channels);
+static DEVICE_ATTR(tx_buf, S_IRUGO, stlc45xx_sysfs_show_tx_buf, NULL);
+
+static void stlc45xx_spi_read(struct stlc45xx *stlc, unsigned long addr,
+ void *buf, size_t len)
+{
+ struct spi_transfer t[2];
+ struct spi_message m;
+
+ /* We first push the address */
+ addr = (addr << 8) | ADDR_READ_BIT_15;
+
+ spi_message_init(&m);
+ memset(t, 0, sizeof(t));
+
+ t[0].tx_buf = &addr;
+ t[0].len = 2;
+ spi_message_add_tail(&t[0], &m);
+
+ t[1].rx_buf = buf;
+ t[1].len = len;
+ spi_message_add_tail(&t[1], &m);
+
+ spi_sync(stlc->spi, &m);
+}
+
+
+static void stlc45xx_spi_write(struct stlc45xx *stlc, unsigned long addr,
+ void *buf, size_t len)
+{
+ struct spi_transfer t[3];
+ struct spi_message m;
+ u16 last_word;
+
+ /* We first push the address */
+ addr = addr << 8;
+
+ spi_message_init(&m);
+ memset(t, 0, sizeof(t));
+
+ t[0].tx_buf = &addr;
+ t[0].len = 2;
+ spi_message_add_tail(&t[0], &m);
+
+ t[1].tx_buf = buf;
+ t[1].len = len;
+ spi_message_add_tail(&t[1], &m);
+
+ if (len % 2) {
+ last_word = ((u8 *)buf)[len - 1];
+
+ t[2].tx_buf = &last_word;
+ t[2].len = 2;
+ spi_message_add_tail(&t[2], &m);
+ }
+
+ spi_sync(stlc->spi, &m);
+}
+
+static u16 stlc45xx_read16(struct stlc45xx *stlc, unsigned long addr)
+{
+ u16 val;
+
+ stlc45xx_spi_read(stlc, addr, &val, sizeof(val));
+
+ return val;
+}
+
+static u32 stlc45xx_read32(struct stlc45xx *stlc, unsigned long addr)
+{
+ u32 val;
+
+ stlc45xx_spi_read(stlc, addr, &val, sizeof(val));
+
+ return val;
+}
+
+static void stlc45xx_write16(struct stlc45xx *stlc, unsigned long addr, u16 val)
+{
+ stlc45xx_spi_write(stlc, addr, &val, sizeof(val));
+}
+
+static void stlc45xx_write32(struct stlc45xx *stlc, unsigned long addr, u32 val)
+{
+ stlc45xx_spi_write(stlc, addr, &val, sizeof(val));
+}
+
+struct stlc45xx_spi_reg {
+ u16 address;
+ u16 length;
+ char *name;
+};
+
+/* caller must hold tx_lock */
+static void stlc45xx_txbuffer_dump(struct stlc45xx *stlc)
+{
+ struct txbuffer *txbuffer;
+ char *buf, *pos;
+ int buf_len, l, count;
+
+ if (!(DEBUG_LEVEL & DEBUG_TXBUFFER))
+ return;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s()", __func__);
+
+ buf_len = 500;
+ buf = kmalloc(buf_len, GFP_ATOMIC);
+ if (!buf)
+ return;
+
+ pos = buf;
+ count = 0;
+
+ list_for_each_entry(txbuffer, &stlc->txbuffer, buffer_list) {
+ l = snprintf(pos, buf_len, "0x%x-0x%x,",
+ txbuffer->start, txbuffer->end);
+ /* drop the null byte */
+ pos += l;
+ buf_len -= l;
+ count++;
+ }
+
+ if (count == 0)
+ *pos = '\0';
+ else
+ *--pos = '\0';
+
+ stlc45xx_debug(DEBUG_TXBUFFER, "txbuffer: in buffer %d regions: %s",
+ count, buf);
+
+ kfree(buf);
+}
+
+/* caller must hold tx_lock */
+static int stlc45xx_txbuffer_find(struct stlc45xx *stlc, size_t len)
+{
+ struct txbuffer *txbuffer;
+ int pos;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s()", __func__);
+
+ pos = FIRMWARE_TXBUFFER_START;
+
+ if (list_empty(&stlc->txbuffer))
+ goto out;
+
+ /*
+ * the entries in txbuffer must be in the same order as they are in
+ * the real buffer
+ */
+ list_for_each_entry(txbuffer, &stlc->txbuffer, buffer_list) {
+ if (pos + len < txbuffer->start)
+ break;
+ pos = ALIGN(txbuffer->end + 1, 4);
+ }
+
+ if (pos + len > FIRMWARE_TXBUFFER_END)
+ /* not enough room */
+ pos = -1;
+
+ stlc45xx_debug(DEBUG_TXBUFFER, "txbuffer: find %d B: 0x%x", len, pos);
+
+out:
+ return pos;
+}
+
+static int stlc45xx_txbuffer_add(struct stlc45xx *stlc,
+ struct txbuffer *txbuffer)
+{
+ struct txbuffer *r, *prev = NULL;
+
+ if (list_empty(&stlc->txbuffer)) {
+ list_add(&txbuffer->buffer_list, &stlc->txbuffer);
+ return 0;
+ }
+
+ r = list_first_entry(&stlc->txbuffer, struct txbuffer, buffer_list);
+
+ if (txbuffer->start < r->start) {
+ /* add to the beginning of the list */
+ list_add(&txbuffer->buffer_list, &stlc->txbuffer);
+ return 0;
+ }
+
+ prev = NULL;
+ list_for_each_entry(r, &stlc->txbuffer, buffer_list) {
+ /* skip first entry, we checked for that above */
+ if (!prev) {
+ prev = r;
+ continue;
+ }
+
+ /* double-check overlaps */
+ WARN_ON_ONCE(txbuffer->start >= r->start &&
+ txbuffer->start <= r->end);
+ WARN_ON_ONCE(txbuffer->end >= r->start &&
+ txbuffer->end <= r->end);
+
+ if (prev->end < txbuffer->start &&
+ txbuffer->end < r->start) {
+ /* insert at this spot */
+ list_add_tail(&txbuffer->buffer_list, &r->buffer_list);
+ return 0;
+ }
+
+ prev = r;
+ }
+
+ /* not found */
+ list_add_tail(&txbuffer->buffer_list, &stlc->txbuffer);
+
+ return 0;
+
+}
+
+/* caller must hold tx_lock */
+static struct txbuffer *stlc45xx_txbuffer_alloc(struct stlc45xx *stlc,
+ size_t frame_len)
+{
+ struct txbuffer *entry = NULL;
+ size_t len;
+ int pos;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s()", __func__);
+
+ len = FIRMWARE_TXBUFFER_HEADER + frame_len + FIRMWARE_TXBUFFER_TRAILER;
+ pos = stlc45xx_txbuffer_find(stlc, len);
+
+ if (pos < 0)
+ return NULL;
+
+ WARN_ON_ONCE(pos + len > FIRMWARE_TXBUFFER_END);
+ WARN_ON_ONCE(pos < FIRMWARE_TXBUFFER_START);
+
+ entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
+ entry->start = pos;
+ entry->frame_start = pos + FIRMWARE_TXBUFFER_HEADER;
+ entry->end = entry->start + len - 1;
+
+ stlc45xx_debug(DEBUG_TXBUFFER, "txbuffer: allocated 0x%x-0x%x",
+ entry->start, entry->end);
+
+ stlc45xx_txbuffer_add(stlc, entry);
+
+ stlc45xx_txbuffer_dump(stlc);
+
+ return entry;
+}
+
+/* caller must hold tx_lock */
+static void stlc45xx_txbuffer_free(struct stlc45xx *stlc,
+ struct txbuffer *txbuffer)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s()", __func__);
+
+ stlc45xx_debug(DEBUG_TXBUFFER, "txbuffer: freed 0x%x-0x%x",
+ txbuffer->start, txbuffer->end);
+
+ list_del(&txbuffer->buffer_list);
+ kfree(txbuffer);
+}
+
+
+static int stlc45xx_wait_bit(struct stlc45xx *stlc, u16 reg, u32 mask,
+ u32 expected)
+{
+ int i;
+ char buffer[4];
+
+ for (i = 0; i < 2000; i++) {
+ stlc45xx_spi_read(stlc, reg, buffer, sizeof(buffer));
+ if (((*(u32 *)buffer) & mask) == expected)
+ return 1;
+ msleep(1);
+ }
+
+ return 0;
+}
+
+static int stlc45xx_request_firmware(struct stlc45xx *stlc)
+{
+ const struct firmware *fw;
+ int ret;
+
+ /* FIXME: should driver use it's own struct device? */
+ ret = request_firmware(&fw, "3826.arm", &stlc->spi->dev);
+
+ if (ret < 0) {
+ stlc45xx_error("request_firmware() failed: %d", ret);
+ return ret;
+ }
+
+ if (fw->size % 4) {
+ stlc45xx_error("firmware size is not multiple of 32bit: %d",
+ fw->size);
+ return -EILSEQ; /* Illegal byte sequence */;
+ }
+
+ if (fw->size < 1000) {
+ stlc45xx_error("firmware is too small: %d", fw->size);
+ return -EILSEQ;
+ }
+
+ stlc->fw = kmemdup(fw->data, fw->size, GFP_KERNEL);
+ if (!stlc->fw) {
+ stlc45xx_error("could not allocate memory for firmware");
+ return -ENOMEM;
+ }
+
+ stlc->fw_len = fw->size;
+
+ release_firmware(fw);
+
+ return 0;
+}
+
+static int stlc45xx_upload_firmware(struct stlc45xx *stlc)
+{
+ struct s_dma_regs dma_regs;
+ unsigned long fw_len, fw_addr;
+ long _fw_len;
+ int ret;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ if (!stlc->fw) {
+ ret = stlc45xx_request_firmware(stlc);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* stop the device */
+ stlc45xx_write16(stlc, SPI_ADRS_DEV_CTRL_STAT,
+ SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_HOST_RESET
+ | SPI_CTRL_STAT_START_HALTED);
+
+ msleep(TARGET_BOOT_SLEEP);
+
+ stlc45xx_write16(stlc, SPI_ADRS_DEV_CTRL_STAT,
+ SPI_CTRL_STAT_HOST_OVERRIDE
+ | SPI_CTRL_STAT_START_HALTED);
+
+ msleep(TARGET_BOOT_SLEEP);
+
+ fw_addr = FIRMWARE_ADDRESS;
+ fw_len = stlc->fw_len;
+
+ while (fw_len > 0) {
+ _fw_len = (fw_len > SPI_MAX_PACKET_SIZE)
+ ? SPI_MAX_PACKET_SIZE : fw_len;
+ dma_regs.cmd = SPI_DMA_WRITE_CTRL_ENABLE;
+ dma_regs.len = cpu_to_le16(_fw_len);
+ dma_regs.addr = cpu_to_le32(fw_addr);
+
+ fw_len -= _fw_len;
+ fw_addr += _fw_len;
+
+ stlc45xx_write16(stlc, SPI_ADRS_DMA_WRITE_CTRL, dma_regs.cmd);
+
+ if (stlc45xx_wait_bit(stlc, SPI_ADRS_DMA_WRITE_CTRL,
+ HOST_ALLOWED, HOST_ALLOWED) == 0) {
+ stlc45xx_error("fw_upload not allowed to DMA write");
+ return -EAGAIN;
+ }
+
+ stlc45xx_write16(stlc, SPI_ADRS_DMA_WRITE_LEN, dma_regs.len);
+ stlc45xx_write32(stlc, SPI_ADRS_DMA_WRITE_BASE, dma_regs.addr);
+
+ stlc45xx_spi_write(stlc, SPI_ADRS_DMA_DATA, stlc->fw, _fw_len);
+
+ /* FIXME: I think this doesn't work if firmware is large,
+ * this loop goes to second round. fw->data is not
+ * increased at all! */
+ }
+
+ BUG_ON(fw_len != 0);
+
+ /* enable host interrupts */
+ stlc45xx_write32(stlc, SPI_ADRS_HOST_INT_EN, SPI_HOST_INTS_DEFAULT);
+
+ /* boot the device */
+ stlc45xx_write16(stlc, SPI_ADRS_DEV_CTRL_STAT,
+ SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_HOST_RESET
+ | SPI_CTRL_STAT_RAM_BOOT);
+
+ msleep(TARGET_BOOT_SLEEP);
+
+ stlc45xx_write16(stlc, SPI_ADRS_DEV_CTRL_STAT,
+ SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_RAM_BOOT);
+ msleep(TARGET_BOOT_SLEEP);
+
+ return 0;
+}
+
+/* caller must hold tx_lock */
+static void stlc45xx_check_txsent(struct stlc45xx *stlc)
+{
+ struct txbuffer *entry, *n;
+
+ list_for_each_entry_safe(entry, n, &stlc->tx_sent, tx_list) {
+ if (time_after(jiffies, entry->lifetime)) {
+ if (net_ratelimit())
+ stlc45xx_warning("frame 0x%x lifetime exceeded",
+ entry->start);
+ list_del(&entry->tx_list);
+ skb_pull(entry->skb, entry->header_len);
+ ieee80211_tx_status(stlc->hw, entry->skb);
+ stlc45xx_txbuffer_free(stlc, entry);
+ }
+ }
+}
+
+static void stlc45xx_power_off(struct stlc45xx *stlc)
+{
+ disable_irq(gpio_to_irq(stlc45xx_gpio_irq));
+ gpio_set_value(stlc45xx_gpio_power, 0);
+}
+
+static void stlc45xx_power_on(struct stlc45xx *stlc)
+{
+ gpio_set_value(stlc45xx_gpio_power, 1);
+ enable_irq(gpio_to_irq(stlc45xx_gpio_irq));
+
+ /*
+ * need to wait a while before device can be accessed, the length
+ * is just a guess
+ */
+ msleep(10);
+}
+
+/* caller must hold tx_lock */
+static void stlc45xx_flush_queues(struct stlc45xx *stlc)
+{
+ struct txbuffer *entry;
+
+ while (!list_empty(&stlc->tx_sent)) {
+ entry = list_first_entry(&stlc->tx_sent,
+ struct txbuffer, tx_list);
+ list_del(&entry->tx_list);
+ dev_kfree_skb(entry->skb);
+ stlc45xx_txbuffer_free(stlc, entry);
+ }
+
+ WARN_ON(!list_empty(&stlc->tx_sent));
+
+ while (!list_empty(&stlc->tx_pending)) {
+ entry = list_first_entry(&stlc->tx_pending,
+ struct txbuffer, tx_list);
+ list_del(&entry->tx_list);
+ dev_kfree_skb(entry->skb);
+ stlc45xx_txbuffer_free(stlc, entry);
+ }
+
+ WARN_ON(!list_empty(&stlc->tx_pending));
+ WARN_ON(!list_empty(&stlc->txbuffer));
+}
+
+static void stlc45xx_work_reset(struct work_struct *work)
+{
+ struct stlc45xx *stlc = container_of(work, struct stlc45xx,
+ work_reset);
+
+ mutex_lock(&stlc->mutex);
+
+ if (stlc->fw_state != FW_STATE_RESET)
+ goto out;
+
+ stlc45xx_power_off(stlc);
+
+ mutex_unlock(&stlc->mutex);
+
+ /* wait that all work_structs have finished, we can't hold
+ * stlc->mutex to avoid deadlock */
+ cancel_work_sync(&stlc->work);
+
+ /* FIXME: find out good value to wait for chip power down */
+ msleep(100);
+
+ mutex_lock(&stlc->mutex);
+
+ /* FIXME: we should gracefully handle if the state has changed
+ * after re-acquiring mutex */
+ WARN_ON(stlc->fw_state != FW_STATE_RESET);
+
+ spin_lock_bh(&stlc->tx_lock);
+ stlc45xx_flush_queues(stlc);
+ spin_unlock_bh(&stlc->tx_lock);
+
+ stlc->fw_state = FW_STATE_RESETTING;
+
+ stlc45xx_power_on(stlc);
+ stlc45xx_upload_firmware(stlc);
+
+out:
+ mutex_unlock(&stlc->mutex);
+}
+
+/* caller must hold mutex */
+static void stlc45xx_reset(struct stlc45xx *stlc)
+{
+ stlc45xx_warning("resetting firmware");
+ stlc->fw_state = FW_STATE_RESET;
+ ieee80211_stop_queues(stlc->hw);
+ queue_work(stlc->hw->workqueue, &stlc->work_reset);
+}
+
+static void stlc45xx_work_tx_timeout(struct work_struct *work)
+{
+ struct stlc45xx *stlc = container_of(work, struct stlc45xx,
+ work_tx_timeout.work);
+
+ stlc45xx_warning("tx timeout");
+
+ mutex_lock(&stlc->mutex);
+
+ if (stlc->fw_state != FW_STATE_READY)
+ goto out;
+
+ stlc45xx_reset(stlc);
+
+out:
+ mutex_unlock(&stlc->mutex);
+}
+
+static void stlc45xx_int_ack(struct stlc45xx *stlc, u32 val)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ stlc45xx_write32(stlc, SPI_ADRS_HOST_INT_ACK, val);
+}
+
+static void stlc45xx_wakeup(struct stlc45xx *stlc)
+{
+ unsigned long timeout;
+ u32 ints;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ /* wake the chip */
+ stlc45xx_write32(stlc, SPI_ADRS_ARM_INTERRUPTS, SPI_TARGET_INT_WAKEUP);
+
+ /* And wait for the READY interrupt */
+ timeout = jiffies + HZ;
+
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ while (!(ints & SPI_HOST_INT_READY)) {
+ if (time_after(jiffies, timeout))
+ goto out;
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ }
+
+ stlc45xx_int_ack(stlc, SPI_HOST_INT_READY);
+
+out:
+ return;
+}
+
+static void stlc45xx_sleep(struct stlc45xx *stlc)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ stlc45xx_write32(stlc, SPI_ADRS_ARM_INTERRUPTS, SPI_TARGET_INT_SLEEP);
+}
+
+static void stlc45xx_int_ready(struct stlc45xx *stlc)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ stlc45xx_write32(stlc, SPI_ADRS_HOST_INT_EN,
+ SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE);
+
+ switch (stlc->fw_state) {
+ case FW_STATE_BOOTING:
+ stlc->fw_state = FW_STATE_READY;
+ complete(&stlc->fw_comp);
+ break;
+ case FW_STATE_RESETTING:
+ stlc->fw_state = FW_STATE_READY;
+
+ stlc45xx_tx_scan(stlc);
+ stlc45xx_tx_setup(stlc);
+ stlc45xx_tx_edcf(stlc);
+
+ ieee80211_wake_queues(stlc->hw);
+ break;
+ default:
+ break;
+ }
+}
+
+static int stlc45xx_rx_txack(struct stlc45xx *stlc, struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info;
+ struct s_lm_control *control;
+ struct s_lmo_tx *tx;
+ struct txbuffer *entry;
+ int found = 0;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ control = (struct s_lm_control *) skb->data;
+ tx = (struct s_lmo_tx *) (control + 1);
+
+ if (list_empty(&stlc->tx_sent)) {
+ if (net_ratelimit())
+ stlc45xx_warning("no frames waiting for "
+ "acknowledgement");
+ return -1;
+ }
+
+ list_for_each_entry(entry, &stlc->tx_sent, tx_list) {
+ if (control->handle == entry->handle) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ if (net_ratelimit())
+ stlc45xx_warning("couldn't find frame for tx ack 0x%x",
+ control->handle);
+ return -1;
+ }
+
+ stlc45xx_debug(DEBUG_TX, "TX ACK 0x%x", entry->handle);
+
+ if (entry->status_needed) {
+ info = IEEE80211_SKB_CB(entry->skb);
+
+ if (!(tx->flags & LM_TX_FAILED)) {
+ /* frame was acked */
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ info->status.ack_signal = tx->rcpi / 2 - 110;
+ }
+
+ skb_pull(entry->skb, entry->header_len);
+
+ ieee80211_tx_status(stlc->hw, entry->skb);
+ }
+
+ list_del(&entry->tx_list);
+
+ stlc45xx_check_txsent(stlc);
+ if (list_empty(&stlc->tx_sent))
+ /* there are no pending frames, we can stop the tx timeout
+ * timer */
+ cancel_delayed_work(&stlc->work_tx_timeout);
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ stlc45xx_txbuffer_free(stlc, entry);
+
+ if (stlc->tx_queue_stopped &&
+ stlc45xx_txbuffer_find(stlc, MAX_FRAME_LEN) != -1) {
+ stlc45xx_debug(DEBUG_QUEUE, "room in tx buffer, waking queues");
+ ieee80211_wake_queues(stlc->hw);
+ stlc->tx_queue_stopped = 0;
+ }
+
+ spin_unlock_bh(&stlc->tx_lock);
+
+ return 0;
+}
+
+static int stlc45xx_rx_control(struct stlc45xx *stlc, struct sk_buff *skb)
+{
+ struct s_lm_control *control;
+ int ret = 0;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ control = (struct s_lm_control *) skb->data;
+
+ switch (control->oid) {
+ case LM_OID_TX:
+ ret = stlc45xx_rx_txack(stlc, skb);
+ break;
+ case LM_OID_SETUP:
+ case LM_OID_SCAN:
+ case LM_OID_TRAP:
+ case LM_OID_EDCF:
+ case LM_OID_KEYCACHE:
+ case LM_OID_PSM:
+ case LM_OID_STATS:
+ case LM_OID_LED:
+ default:
+ stlc45xx_warning("unhandled rx control oid %d\n",
+ control->oid);
+ break;
+ }
+
+ dev_kfree_skb(skb);
+
+ return ret;
+}
+
+/* copied from mac80211 */
+static void stlc45xx_parse_elems(u8 *start, size_t len,
+ struct stlc45xx_ie_tim **tim,
+ size_t *tim_len)
+{
+ size_t left = len;
+ u8 *pos = start;
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left)
+ return;
+
+ switch (id) {
+ case WLAN_EID_TIM:
+ *tim = (struct stlc45xx_ie_tim *) pos;
+ *tim_len = elen;
+ break;
+ default:
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+}
+
+/*
+ * mac80211 doesn't have support for asking frames with PS-Poll, so let's
+ * implement in the driver for now. We have to add support to mac80211
+ * later.
+ */
+static int stlc45xx_check_more_data(struct stlc45xx *stlc, struct sk_buff *skb)
+{
+ struct s_lm_data_in *data = (struct s_lm_data_in *) skb->data;
+ struct ieee80211_hdr *hdr;
+ size_t len;
+ u16 fc;
+
+ hdr = (void *) skb->data + sizeof(*data);
+ len = skb->len - sizeof(*data);
+
+ /* minimum frame length is the null frame length 24 bytes */
+ if (len < 24) {
+ stlc45xx_warning("invalid frame length when checking for "
+ "more data");
+ return -EINVAL;
+ }
+
+ fc = le16_to_cpu(hdr->frame_control);
+ if (!(fc & IEEE80211_FCTL_FROMDS))
+ /* this is not from DS */
+ return 0;
+
+ if (compare_ether_addr(hdr->addr1, stlc->mac_addr) != 0)
+ /* the frame was not for us */
+ return 0;
+
+ if (!(fc & IEEE80211_FCTL_MOREDATA)) {
+ /* AP has no more frames buffered for us */
+ stlc45xx_debug(DEBUG_PSM, "all buffered frames retrieved");
+ stlc->pspolling = false;
+ return 0;
+ }
+
+ /* MOREDATA bit is set, let's ask for a new frame from the AP */
+ stlc45xx_tx_pspoll(stlc, stlc->psm);
+
+ return 0;
+}
+
+/*
+ * mac80211 cannot read TIM from beacons, so let's add a hack to the
+ * driver. We have to add support to mac80211 later.
+ */
+static int stlc45xx_rx_data_beacon(struct stlc45xx *stlc, struct sk_buff *skb)
+{
+ struct s_lm_data_in *data = (struct s_lm_data_in *) skb->data;
+ size_t len = skb->len, tim_len = 0, baselen, pvbmap_len;
+ struct ieee80211_mgmt *mgmt;
+ struct stlc45xx_ie_tim *tim = NULL;
+ int bmap_offset, index, aid_bit;
+
+ mgmt = (void *) skb->data + sizeof(*data);
+
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len) {
+ stlc45xx_warning("invalid baselen in beacon");
+ return -EINVAL;
+ }
+
+ stlc45xx_parse_elems(mgmt->u.beacon.variable, len - baselen, &tim,
+ &tim_len);
+
+ if (!tim) {
+ stlc45xx_warning("didn't find tim from a beacon");
+ return -EINVAL;
+ }
+
+ bmap_offset = tim->bmap_control & 0xfe;
+ index = stlc->aid / 8 - bmap_offset;
+
+ pvbmap_len = tim_len - 3;
+ if (index > pvbmap_len)
+ return -EINVAL;
+
+ aid_bit = !!(tim->pvbmap[index] & (1 << stlc->aid % 8));
+
+ stlc45xx_debug(DEBUG_PSM, "fc 0x%x duration %d seq %d dtim %u "
+ "bmap_control 0x%x aid_bit %d",
+ mgmt->frame_control, mgmt->duration, mgmt->seq_ctrl >> 4,
+ tim->dtim_count, tim->bmap_control, aid_bit);
+
+ if (!aid_bit)
+ return 0;
+
+ stlc->pspolling = true;
+ stlc45xx_tx_pspoll(stlc, stlc->psm);
+
+ return 0;
+}
+
+static int stlc45xx_rx_data(struct stlc45xx *stlc, struct sk_buff *skb)
+{
+ struct ieee80211_rx_status status;
+ struct s_lm_data_in *data = (struct s_lm_data_in *) skb->data;
+ int align = 0;
+ u8 *p, align_len;
+ u16 len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ if (stlc->psm) {
+ if (data->flags & LM_IN_BEACON)
+ stlc45xx_rx_data_beacon(stlc, skb);
+ else if (stlc->pspolling && (data->flags & LM_IN_DATA))
+ stlc45xx_check_more_data(stlc, skb);
+ }
+
+ memset(&status, 0, sizeof(status));
+
+ status.freq = data->frequency;
+ status.signal = data->rcpi / 2 - 110;
+
+ /* let's assume that maximum rcpi value is 140 (= 35 dBm) */
+ status.qual = data->rcpi * 100 / 140;
+
+ status.band = IEEE80211_BAND_2GHZ;
+
+ /*
+ * FIXME: this gives warning from __ieee80211_rx()
+ *
+ * status.rate_idx = data->rate;
+ */
+
+ len = data->length;
+
+ if (data->flags & LM_FLAG_ALIGN)
+ align = 1;
+
+ skb_pull(skb, sizeof(*data));
+
+ if (align) {
+ p = skb->data;
+ align_len = *p;
+ skb_pull(skb, align_len);
+ }
+
+ skb_trim(skb, len);
+
+ stlc45xx_debug(DEBUG_RX, "rx data 0x%p %d B", skb->data, skb->len);
+ stlc45xx_dump(DEBUG_RX_CONTENT, skb->data, skb->len);
+
+ ieee80211_rx(stlc->hw, skb, &status);
+
+ return 0;
+}
+
+
+
+static int stlc45xx_rx(struct stlc45xx *stlc)
+{
+ struct s_lm_control *control;
+ struct sk_buff *skb;
+ int ret;
+ u16 len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ stlc45xx_wakeup(stlc);
+
+ /* dummy read to flush SPI DMA controller bug */
+ stlc45xx_read16(stlc, SPI_ADRS_GEN_PURP_1);
+
+ len = stlc45xx_read16(stlc, SPI_ADRS_DMA_DATA);
+
+ if (len == 0) {
+ stlc45xx_warning("rx request of zero bytes");
+ return 0;
+ }
+
+ skb = dev_alloc_skb(len);
+ if (!skb) {
+ stlc45xx_warning("could not alloc skb");
+ return 0;
+ }
+
+ stlc45xx_spi_read(stlc, SPI_ADRS_DMA_DATA, skb_put(skb, len), len);
+
+ stlc45xx_sleep(stlc);
+
+ stlc45xx_debug(DEBUG_RX, "rx frame 0x%p %d B", skb->data, skb->len);
+ stlc45xx_dump(DEBUG_RX_CONTENT, skb->data, skb->len);
+
+ control = (struct s_lm_control *) skb->data;
+
+ if (control->flags & LM_FLAG_CONTROL)
+ ret = stlc45xx_rx_control(stlc, skb);
+ else
+ ret = stlc45xx_rx_data(stlc, skb);
+
+ return ret;
+}
+
+
+static irqreturn_t stlc45xx_interrupt(int irq, void *config)
+{
+ struct spi_device *spi = config;
+ struct stlc45xx *stlc = dev_get_drvdata(&spi->dev);
+
+ stlc45xx_debug(DEBUG_IRQ, "IRQ");
+
+ queue_work(stlc->hw->workqueue, &stlc->work);
+
+ return IRQ_HANDLED;
+}
+
+static int stlc45xx_tx_frame(struct stlc45xx *stlc, u32 address,
+ void *buf, size_t len)
+{
+ struct s_dma_regs dma_regs;
+ unsigned long timeout;
+ int ret = 0;
+ u32 ints;
+
+ stlc->tx_frames++;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ stlc45xx_debug(DEBUG_TX, "tx frame 0x%p %d B", buf, len);
+ stlc45xx_dump(DEBUG_TX_CONTENT, buf, len);
+
+ stlc45xx_wakeup(stlc);
+
+ dma_regs.cmd = SPI_DMA_WRITE_CTRL_ENABLE;
+ dma_regs.len = cpu_to_le16(len);
+ dma_regs.addr = cpu_to_le32(address);
+
+ stlc45xx_spi_write(stlc, SPI_ADRS_DMA_WRITE_CTRL, &dma_regs,
+ sizeof(dma_regs));
+
+ stlc45xx_spi_write(stlc, SPI_ADRS_DMA_DATA, buf, len);
+
+ timeout = jiffies + 2 * HZ;
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ while (!(ints & SPI_HOST_INT_WR_READY)) {
+ if (time_after(jiffies, timeout)) {
+ stlc45xx_warning("WR_READY timeout");
+ ret = -1;
+ goto out;
+ }
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ }
+
+ stlc45xx_int_ack(stlc, SPI_HOST_INT_WR_READY);
+
+ stlc45xx_sleep(stlc);
+
+out:
+ return ret;
+}
+
+static int stlc45xx_wq_tx(struct stlc45xx *stlc)
+{
+ struct txbuffer *entry;
+ int ret = 0;
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ while (!list_empty(&stlc->tx_pending)) {
+ entry = list_entry(stlc->tx_pending.next,
+ struct txbuffer, tx_list);
+
+ list_del_init(&entry->tx_list);
+
+ spin_unlock_bh(&stlc->tx_lock);
+
+ ret = stlc45xx_tx_frame(stlc, entry->frame_start,
+ entry->skb->data, entry->skb->len);
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ if (ret < 0) {
+ /* frame transfer to firmware buffer failed */
+ /* FIXME: report this to mac80211 */
+ dev_kfree_skb(entry->skb);
+ stlc45xx_txbuffer_free(stlc, entry);
+ goto out;
+ }
+
+ list_add(&entry->tx_list, &stlc->tx_sent);
+ queue_delayed_work(stlc->hw->workqueue,
+ &stlc->work_tx_timeout,
+ msecs_to_jiffies(TX_TIMEOUT));
+ }
+
+out:
+ spin_unlock_bh(&stlc->tx_lock);
+ return ret;
+}
+
+static void stlc45xx_work(struct work_struct *work)
+{
+ struct stlc45xx *stlc = container_of(work, struct stlc45xx, work);
+ u32 ints;
+ int ret;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ if (stlc->fw_state == FW_STATE_OFF &&
+ stlc->fw_state == FW_STATE_RESET)
+ goto out;
+
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ stlc45xx_debug(DEBUG_BH, "begin host_ints 0x%08x", ints);
+
+ if (ints & SPI_HOST_INT_READY) {
+ stlc45xx_int_ready(stlc);
+ stlc45xx_int_ack(stlc, SPI_HOST_INT_READY);
+ }
+
+ if (stlc->fw_state != FW_STATE_READY)
+ goto out;
+
+ if (ints & SPI_HOST_INT_UPDATE) {
+ stlc45xx_int_ack(stlc, SPI_HOST_INT_UPDATE);
+ ret = stlc45xx_rx(stlc);
+ if (ret < 0) {
+ stlc45xx_reset(stlc);
+ goto out;
+ }
+ }
+ if (ints & SPI_HOST_INT_SW_UPDATE) {
+ stlc45xx_int_ack(stlc, SPI_HOST_INT_SW_UPDATE);
+ ret = stlc45xx_rx(stlc);
+ if (ret < 0) {
+ stlc45xx_reset(stlc);
+ goto out;
+ }
+ }
+
+ ret = stlc45xx_wq_tx(stlc);
+ if (ret < 0) {
+ stlc45xx_reset(stlc);
+ goto out;
+ }
+
+ ints = stlc45xx_read32(stlc, SPI_ADRS_HOST_INTERRUPTS);
+ stlc45xx_debug(DEBUG_BH, "end host_ints 0x%08x", ints);
+
+out:
+ mutex_unlock(&stlc->mutex);
+}
+
+static void stlc45xx_tx_edcf(struct stlc45xx *stlc)
+{
+ struct s_lm_control *control;
+ struct s_lmo_edcf *edcf;
+ size_t len, edcf_len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ edcf_len = sizeof(*edcf);
+ len = sizeof(*control) + edcf_len;
+ control = kzalloc(len, GFP_KERNEL);
+ edcf = (struct s_lmo_edcf *) (control + 1);
+
+ control->flags = LM_FLAG_CONTROL | LM_CTRL_OPSET;
+ control->length = edcf_len;
+ control->oid = LM_OID_EDCF;
+
+ edcf->slottime = 0x14;
+ edcf->sifs = 10;
+ edcf->eofpad = 6;
+ edcf->maxburst = 1500;
+
+ edcf->queues[0].aifs = 2;
+ edcf->queues[0].pad0 = 1;
+ edcf->queues[0].cwmin = 3;
+ edcf->queues[0].cwmax = 7;
+ edcf->queues[0].txop = 47;
+ edcf->queues[1].aifs = 2;
+ edcf->queues[1].pad0 = 0;
+ edcf->queues[1].cwmin = 7;
+ edcf->queues[1].cwmax = 15;
+ edcf->queues[1].txop = 94;
+ edcf->queues[2].aifs = 3;
+ edcf->queues[2].pad0 = 0;
+ edcf->queues[2].cwmin = 15;
+ edcf->queues[2].cwmax = 1023;
+ edcf->queues[2].txop = 0;
+ edcf->queues[3].aifs = 7;
+ edcf->queues[3].pad0 = 0;
+ edcf->queues[3].cwmin = 15;
+ edcf->queues[3].cwmax = 1023;
+ edcf->queues[3].txop = 0;
+ edcf->queues[4].aifs = 13;
+ edcf->queues[4].pad0 = 99;
+ edcf->queues[4].cwmin = 3437;
+ edcf->queues[4].cwmax = 512;
+ edcf->queues[4].txop = 12;
+ edcf->queues[5].aifs = 142;
+ edcf->queues[5].pad0 = 109;
+ edcf->queues[5].cwmin = 8756;
+ edcf->queues[5].cwmax = 6;
+ edcf->queues[5].txop = 0;
+ edcf->queues[6].aifs = 4;
+ edcf->queues[6].pad0 = 0;
+ edcf->queues[6].cwmin = 0;
+ edcf->queues[6].cwmax = 58705;
+ edcf->queues[6].txop = 25716;
+ edcf->queues[7].aifs = 0;
+ edcf->queues[7].pad0 = 0;
+ edcf->queues[7].cwmin = 0;
+ edcf->queues[7].cwmax = 0;
+ edcf->queues[7].txop = 0;
+
+ stlc45xx_tx_frame(stlc, FIRMWARE_CONFIG_START, control, len);
+
+ kfree(control);
+}
+
+static void stlc45xx_tx_setup(struct stlc45xx *stlc)
+{
+ struct s_lm_control *control;
+ struct s_lmo_setup *setup;
+ size_t len, setup_len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ setup_len = sizeof(*setup);
+ len = sizeof(*control) + setup_len;
+ control = kzalloc(len, GFP_KERNEL);
+ setup = (struct s_lmo_setup *) (control + 1);
+
+ control->flags = LM_FLAG_CONTROL | LM_CTRL_OPSET;
+ control->length = setup_len;
+ control->oid = LM_OID_SETUP;
+
+ setup->flags = LM_SETUP_INFRA;
+ setup->antenna = 2;
+ setup->rx_align = 0;
+ setup->rx_buffer = FIRMWARE_RXBUFFER_START;
+ setup->rx_mtu = FIRMWARE_MTU;
+ setup->frontend = 5;
+ setup->timeout = 0;
+ setup->truncate = 48896;
+ setup->bratemask = 0xffffffff;
+ setup->ref_clock = 644245094;
+ setup->lpf_bandwidth = 65535;
+ setup->osc_start_delay = 65535;
+
+ memcpy(setup->macaddr, stlc->mac_addr, ETH_ALEN);
+ memcpy(setup->bssid, stlc->bssid, ETH_ALEN);
+
+ stlc45xx_tx_frame(stlc, FIRMWARE_CONFIG_START, control, len);
+
+ kfree(control);
+}
+
+static void stlc45xx_tx_scan(struct stlc45xx *stlc)
+{
+ struct s_lm_control *control;
+ struct s_lmo_scan *scan;
+ size_t len, scan_len;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ scan_len = sizeof(*scan);
+ len = sizeof(*control) + scan_len;
+ control = kzalloc(len, GFP_KERNEL);
+ scan = (struct s_lmo_scan *) (control + 1);
+
+ control->flags = LM_FLAG_CONTROL | LM_CTRL_OPSET;
+ control->length = scan_len;
+ control->oid = LM_OID_SCAN;
+
+ scan->flags = LM_SCAN_EXIT;
+ scan->bratemask = 0x15f;
+ scan->aloft[0] = 3;
+ scan->aloft[1] = 3;
+ scan->aloft[2] = 1;
+ scan->aloft[3] = 0;
+ scan->aloft[4] = 0;
+ scan->aloft[5] = 0;
+ scan->aloft[6] = 0;
+ scan->aloft[7] = 0;
+
+ memcpy(&scan->rssical, &stlc->cal_rssi[(stlc->channel - 1) *
+ RSSI_CAL_LEN],
+ RSSI_CAL_LEN);
+ memcpy(&scan->channel, &stlc->cal_channels[(stlc->channel - 1) *
+ CHANNEL_CAL_LEN],
+ CHANNEL_CAL_LEN);
+
+ stlc45xx_tx_frame(stlc, FIRMWARE_CONFIG_START, control, len);
+
+ kfree(control);
+}
+
+/*
+ * caller must hold mutex
+ */
+static int stlc45xx_tx_pspoll(struct stlc45xx *stlc, bool powersave)
+{
+ struct ieee80211_hdr *pspoll;
+ int payload_len, padding, i;
+ struct s_lm_data_out *data;
+ struct txbuffer *entry;
+ DECLARE_MAC_BUF(mac);
+ struct sk_buff *skb;
+ char *payload;
+ u16 fc;
+
+ skb = dev_alloc_skb(stlc->hw->extra_tx_headroom + 16);
+ if (!skb) {
+ stlc45xx_warning("failed to allocate pspoll frame");
+ return -ENOMEM;
+ }
+ skb_reserve(skb, stlc->hw->extra_tx_headroom);
+
+ pspoll = (struct ieee80211_hdr *) skb_put(skb, 16);
+ memset(pspoll, 0, 16);
+ fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL;
+ if (powersave)
+ fc |= IEEE80211_FCTL_PM;
+ pspoll->frame_control = cpu_to_le16(fc);
+ pspoll->duration_id = cpu_to_le16(stlc->aid);
+
+ /* aid in PS-Poll has its two MSBs each set to 1 */
+ pspoll->duration_id |= cpu_to_le16(1 << 15) | cpu_to_le16(1 << 14);
+
+ memcpy(pspoll->addr1, stlc->bssid, ETH_ALEN);
+ memcpy(pspoll->addr2, stlc->mac_addr, ETH_ALEN);
+
+ stlc45xx_debug(DEBUG_PSM, "sending PS-Poll frame to %s (powersave %d, "
+ "fc 0x%x, aid %d)", print_mac(mac, pspoll->addr1),
+ powersave, fc, stlc->aid);
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ entry = stlc45xx_txbuffer_alloc(stlc, skb->len);
+
+ spin_unlock_bh(&stlc->tx_lock);
+
+ if (!entry) {
+ /*
+ * The queue should be stopped before the firmware buffer
+ * is full, so firmware buffer should always have enough
+ * space.
+ *
+ * But I'm too lazy and omit it for now.
+ */
+ if (net_ratelimit())
+ stlc45xx_warning("firmware tx buffer full is full "
+ "for null frame");
+ return -ENOSPC;
+ }
+
+ payload = skb->data;
+ payload_len = skb->len;
+ padding = (int) (skb->data - sizeof(*data)) & 3;
+ entry->header_len = sizeof(*data) + padding;
+
+ entry->skb = skb;
+ entry->status_needed = false;
+ entry->handle = (u32) skb;
+ entry->lifetime = jiffies + msecs_to_jiffies(TX_FRAME_LIFETIME);
+
+ stlc45xx_debug(DEBUG_TX, "tx data 0x%x (0x%p payload %d B "
+ "padding %d header_len %d)",
+ entry->handle, payload, payload_len, padding,
+ entry->header_len);
+ stlc45xx_dump(DEBUG_TX_CONTENT, payload, payload_len);
+
+ data = (struct s_lm_data_out *) skb_push(skb, entry->header_len);
+
+ memset(data, 0, entry->header_len);
+
+ if (padding)
+ data->flags = LM_FLAG_ALIGN;
+
+ data->flags = LM_OUT_BURST;
+ data->length = payload_len;
+ data->handle = entry->handle;
+ data->aid = 1;
+ data->rts_retries = 7;
+ data->retries = 7;
+ data->aloft_ctrl = 0;
+ data->crypt_offset = 58;
+ data->keytype = 0;
+ data->keylen = 0;
+ data->queue = LM_QUEUE_DATA3;
+ data->backlog = 32;
+ data->antenna = 2;
+ data->cts = 3;
+ data->power = 127;
+
+ for (i = 0; i < 8; i++)
+ data->aloft[i] = 0;
+
+ /*
+ * check if there's enough space in tx buffer
+ *
+ * FIXME: ignored for now
+ */
+
+ stlc45xx_tx_frame(stlc, entry->start, skb->data, skb->len);
+
+ list_add(&entry->tx_list, &stlc->tx_sent);
+
+ return 0;
+}
+
+/*
+ * caller must hold mutex
+ *
+ * shamelessly stolen from mac80211/ieee80211_send_nullfunc
+ */
+static int stlc45xx_tx_nullfunc(struct stlc45xx *stlc, bool powersave)
+{
+ struct ieee80211_hdr *nullfunc;
+ int payload_len, padding, i;
+ struct s_lm_data_out *data;
+ struct txbuffer *entry;
+ DECLARE_MAC_BUF(mac);
+ struct sk_buff *skb;
+ char *payload;
+ u16 fc;
+
+ skb = dev_alloc_skb(stlc->hw->extra_tx_headroom + 24);
+ if (!skb) {
+ stlc45xx_warning("failed to allocate buffer for null frame\n");
+ return -ENOMEM;
+ }
+ skb_reserve(skb, stlc->hw->extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(nullfunc, 0, 24);
+ fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS;
+
+ if (powersave)
+ fc |= IEEE80211_FCTL_PM;
+
+ nullfunc->frame_control = cpu_to_le16(fc);
+ memcpy(nullfunc->addr1, stlc->bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, stlc->mac_addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, stlc->bssid, ETH_ALEN);
+
+ stlc45xx_debug(DEBUG_PSM, "sending Null frame to %s (powersave %d, "
+ "fc 0x%x)",
+ print_mac(mac, nullfunc->addr1), powersave, fc);
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ entry = stlc45xx_txbuffer_alloc(stlc, skb->len);
+
+ spin_unlock_bh(&stlc->tx_lock);
+
+ if (!entry) {
+ /*
+ * The queue should be stopped before the firmware buffer
+ * is full, so firmware buffer should always have enough
+ * space.
+ *
+ * But I'm too lazy and omit it for now.
+ */
+ if (net_ratelimit())
+ stlc45xx_warning("firmware tx buffer full is full "
+ "for null frame");
+ return -ENOSPC;
+ }
+
+ payload = skb->data;
+ payload_len = skb->len;
+ padding = (int) (skb->data - sizeof(*data)) & 3;
+ entry->header_len = sizeof(*data) + padding;
+
+ entry->skb = skb;
+ entry->status_needed = false;
+ entry->handle = (u32) skb;
+ entry->lifetime = jiffies + msecs_to_jiffies(TX_FRAME_LIFETIME);
+
+ stlc45xx_debug(DEBUG_TX, "tx data 0x%x (0x%p payload %d B "
+ "padding %d header_len %d)",
+ entry->handle, payload, payload_len, padding,
+ entry->header_len);
+ stlc45xx_dump(DEBUG_TX_CONTENT, payload, payload_len);
+
+ data = (struct s_lm_data_out *) skb_push(skb, entry->header_len);
+
+ memset(data, 0, entry->header_len);
+
+ if (padding)
+ data->flags = LM_FLAG_ALIGN;
+
+ data->flags = LM_OUT_BURST;
+ data->length = payload_len;
+ data->handle = entry->handle;
+ data->aid = 1;
+ data->rts_retries = 7;
+ data->retries = 7;
+ data->aloft_ctrl = 0;
+ data->crypt_offset = 58;
+ data->keytype = 0;
+ data->keylen = 0;
+ data->queue = LM_QUEUE_DATA3;
+ data->backlog = 32;
+ data->antenna = 2;
+ data->cts = 3;
+ data->power = 127;
+
+ for (i = 0; i < 8; i++)
+ data->aloft[i] = 0;
+
+ /*
+ * check if there's enough space in tx buffer
+ *
+ * FIXME: ignored for now
+ */
+
+ stlc45xx_tx_frame(stlc, entry->start, skb->data, skb->len);
+
+ list_add(&entry->tx_list, &stlc->tx_sent);
+
+ return 0;
+}
+
+/* caller must hold mutex */
+static void stlc45xx_tx_psm(struct stlc45xx *stlc, bool enable)
+{
+ struct s_lm_control *control;
+ struct s_lmo_psm *psm;
+ size_t len, psm_len;
+
+ WARN_ON(!stlc->associated);
+ WARN_ON(stlc->aid < 1);
+ WARN_ON(stlc->aid > 2007);
+
+ psm_len = sizeof(*psm);
+ len = sizeof(*control) + psm_len;
+ control = kzalloc(len, GFP_KERNEL);
+ psm = (struct s_lmo_psm *) (control + 1);
+
+ control->flags = LM_FLAG_CONTROL | LM_CTRL_OPSET;
+ control->length = psm_len;
+ control->oid = LM_OID_PSM;
+
+ if (enable)
+ psm->flags |= LM_PSM;
+
+ psm->aid = stlc->aid;
+
+ psm->beacon_rcpi_skip_max = 60;
+
+ psm->intervals[0].interval = 1;
+ psm->intervals[0].periods = 1;
+ psm->intervals[1].interval = 1;
+ psm->intervals[1].periods = 1;
+ psm->intervals[2].interval = 1;
+ psm->intervals[2].periods = 1;
+ psm->intervals[3].interval = 1;
+ psm->intervals[3].periods = 1;
+
+ psm->nr = 0;
+ psm->exclude[0] = 0;
+
+ stlc45xx_debug(DEBUG_PSM, "sending LM_OID_PSM (aid %d, interval %d)",
+ psm->aid, psm->intervals[0].interval);
+
+ stlc45xx_tx_frame(stlc, FIRMWARE_CONFIG_START, control, len);
+
+ kfree(control);
+}
+
+static int stlc45xx_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct stlc45xx *stlc = hw->priv;
+ struct ieee80211_tx_info *info;
+ struct ieee80211_rate *rate;
+ int payload_len, padding, i;
+ struct s_lm_data_out *data;
+ struct txbuffer *entry;
+ char *payload;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ spin_lock_bh(&stlc->tx_lock);
+
+ entry = stlc45xx_txbuffer_alloc(stlc, skb->len);
+ if (!entry) {
+ /* the queue should be stopped before the firmware buffer
+ * is full, so firmware buffer should always have enough
+ * space */
+ if (net_ratelimit())
+ stlc45xx_warning("firmware buffer full");
+ spin_unlock_bh(&stlc->tx_lock);
+ return NETDEV_TX_BUSY;
+ }
+
+ info = IEEE80211_SKB_CB(skb);
+
+ payload = skb->data;
+ payload_len = skb->len;
+ padding = (int) (skb->data - sizeof(*data)) & 3;
+ entry->header_len = sizeof(*data) + padding;
+
+ entry->skb = skb;
+ entry->status_needed = true;
+ entry->handle = (u32) skb;
+ entry->lifetime = jiffies + msecs_to_jiffies(TX_FRAME_LIFETIME);
+
+ stlc45xx_debug(DEBUG_TX, "tx data 0x%x (0x%p payload %d B "
+ "padding %d header_len %d)",
+ entry->handle, payload, payload_len, padding,
+ entry->header_len);
+ stlc45xx_dump(DEBUG_TX_CONTENT, payload, payload_len);
+
+ data = (struct s_lm_data_out *) skb_push(skb, entry->header_len);
+
+ memset(data, 0, entry->header_len);
+
+ if (padding)
+ data->flags = LM_FLAG_ALIGN;
+
+ data->flags = LM_OUT_BURST;
+ data->length = payload_len;
+ data->handle = entry->handle;
+ data->aid = 1;
+ data->rts_retries = 7;
+ data->retries = 7;
+ data->aloft_ctrl = 0;
+ data->crypt_offset = 58;
+ data->keytype = 0;
+ data->keylen = 0;
+ data->queue = 2;
+ data->backlog = 32;
+ data->antenna = 2;
+ data->cts = 3;
+ data->power = 127;
+
+ for (i = 0; i < 8; i++) {
+ rate = ieee80211_get_tx_rate(stlc->hw, info);
+ data->aloft[i] = rate->hw_value;
+ }
+
+ list_add_tail(&entry->tx_list, &stlc->tx_pending);
+
+ /* check if there's enough space in tx buffer */
+ if (stlc45xx_txbuffer_find(stlc, MAX_FRAME_LEN) == -1) {
+ stlc45xx_debug(DEBUG_QUEUE, "tx buffer full, stopping queues");
+ stlc->tx_queue_stopped = 1;
+ ieee80211_stop_queues(stlc->hw);
+ }
+
+ queue_work(stlc->hw->workqueue, &stlc->work);
+
+ spin_unlock_bh(&stlc->tx_lock);
+
+ return NETDEV_TX_OK;
+}
+
+static int stlc45xx_op_start(struct ieee80211_hw *hw)
+{
+ struct stlc45xx *stlc = hw->priv;
+ unsigned long timeout;
+ int ret = 0;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ stlc->fw_state = FW_STATE_BOOTING;
+ stlc->channel = 1;
+
+ stlc45xx_power_on(stlc);
+
+ ret = stlc45xx_upload_firmware(stlc);
+ if (ret < 0) {
+ stlc45xx_power_off(stlc);
+ goto out_unlock;
+ }
+
+ stlc->tx_queue_stopped = 0;
+
+ mutex_unlock(&stlc->mutex);
+
+ timeout = msecs_to_jiffies(2000);
+ timeout = wait_for_completion_interruptible_timeout(&stlc->fw_comp,
+ timeout);
+ if (!timeout) {
+ stlc45xx_error("firmware boot failed");
+ stlc45xx_power_off(stlc);
+ ret = -1;
+ goto out;
+ }
+
+ stlc45xx_debug(DEBUG_BOOT, "firmware booted");
+
+ /* FIXME: should we take mutex just after wait_for_completion()? */
+ mutex_lock(&stlc->mutex);
+
+ WARN_ON(stlc->fw_state != FW_STATE_READY);
+
+out_unlock:
+ mutex_unlock(&stlc->mutex);
+
+out:
+ return ret;
+}
+
+static void stlc45xx_op_stop(struct ieee80211_hw *hw)
+{
+ struct stlc45xx *stlc = hw->priv;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ WARN_ON(stlc->fw_state != FW_STATE_READY);
+
+ stlc45xx_power_off(stlc);
+
+ /* FIXME: make sure that all work_structs have completed */
+
+ spin_lock_bh(&stlc->tx_lock);
+ stlc45xx_flush_queues(stlc);
+ spin_unlock_bh(&stlc->tx_lock);
+
+ stlc->fw_state = FW_STATE_OFF;
+
+ mutex_unlock(&stlc->mutex);
+}
+
+static int stlc45xx_op_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct stlc45xx *stlc = hw->priv;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ switch (conf->type) {
+ case NL80211_IFTYPE_STATION:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ memcpy(stlc->mac_addr, conf->mac_addr, ETH_ALEN);
+
+ return 0;
+}
+
+static void stlc45xx_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+}
+
+static int stlc45xx_op_config_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_if_conf *conf)
+{
+ struct stlc45xx *stlc = hw->priv;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ memcpy(stlc->bssid, conf->bssid, ETH_ALEN);
+ stlc45xx_tx_setup(stlc);
+
+ mutex_unlock(&stlc->mutex);
+
+ return 0;
+}
+
+static int stlc45xx_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct stlc45xx *stlc = hw->priv;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ mutex_lock(&stlc->mutex);
+
+ stlc->channel = hw->conf.channel->hw_value;
+ stlc45xx_tx_scan(stlc);
+ stlc45xx_tx_setup(stlc);
+ stlc45xx_tx_edcf(stlc);
+
+ if ((hw->conf.flags & IEEE80211_CONF_PS) != stlc->psm) {
+ stlc->psm = hw->conf.flags & IEEE80211_CONF_PS;
+ if (stlc->associated) {
+ stlc45xx_tx_psm(stlc, stlc->psm);
+ stlc45xx_tx_nullfunc(stlc, stlc->psm);
+ }
+ }
+
+ mutex_unlock(&stlc->mutex);
+
+ return 0;
+}
+
+static void stlc45xx_op_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ int mc_count,
+ struct dev_addr_list *mc_list)
+{
+ *total_flags = 0;
+}
+
+static void stlc45xx_op_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info,
+ u32 changed)
+{
+ struct stlc45xx *stlc = hw->priv;
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ stlc->associated = info->assoc;
+ if (info->assoc)
+ stlc->aid = info->aid;
+ else
+ stlc->aid = -1;
+
+ if (stlc->psm) {
+ stlc45xx_tx_psm(stlc, stlc->psm);
+ stlc45xx_tx_nullfunc(stlc, stlc->psm);
+ }
+ }
+}
+
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_rate stlc45xx_rates[] = {
+ { .bitrate = 10, .hw_value = 0, .hw_value_short = 0, },
+ { .bitrate = 20, .hw_value = 1, .hw_value_short = 1, },
+ { .bitrate = 55, .hw_value = 2, .hw_value_short = 2, },
+ { .bitrate = 110, .hw_value = 3, .hw_value_short = 3, },
+ { .bitrate = 60, .hw_value = 4, .hw_value_short = 4, },
+ { .bitrate = 90, .hw_value = 5, .hw_value_short = 5, },
+ { .bitrate = 120, .hw_value = 6, .hw_value_short = 6, },
+ { .bitrate = 180, .hw_value = 7, .hw_value_short = 7, },
+ { .bitrate = 240, .hw_value = 8, .hw_value_short = 8, },
+ { .bitrate = 360, .hw_value = 9, .hw_value_short = 9, },
+ { .bitrate = 480, .hw_value = 10, .hw_value_short = 10, },
+ { .bitrate = 540, .hw_value = 11, .hw_value_short = 11, },
+};
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_channel stlc45xx_channels[] = {
+ { .hw_value = 1, .center_freq = 2412},
+ { .hw_value = 2, .center_freq = 2417},
+ { .hw_value = 3, .center_freq = 2422},
+ { .hw_value = 4, .center_freq = 2427},
+ { .hw_value = 5, .center_freq = 2432},
+ { .hw_value = 6, .center_freq = 2437},
+ { .hw_value = 7, .center_freq = 2442},
+ { .hw_value = 8, .center_freq = 2447},
+ { .hw_value = 9, .center_freq = 2452},
+ { .hw_value = 10, .center_freq = 2457},
+ { .hw_value = 11, .center_freq = 2462},
+ { .hw_value = 12, .center_freq = 2467},
+ { .hw_value = 13, .center_freq = 2472},
+};
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_supported_band stlc45xx_band_2ghz = {
+ .channels = stlc45xx_channels,
+ .n_channels = ARRAY_SIZE(stlc45xx_channels),
+ .bitrates = stlc45xx_rates,
+ .n_bitrates = ARRAY_SIZE(stlc45xx_rates),
+};
+
+static const struct ieee80211_ops stlc45xx_ops = {
+ .start = stlc45xx_op_start,
+ .stop = stlc45xx_op_stop,
+ .add_interface = stlc45xx_op_add_interface,
+ .remove_interface = stlc45xx_op_remove_interface,
+ .config = stlc45xx_op_config,
+ .config_interface = stlc45xx_op_config_interface,
+ .configure_filter = stlc45xx_op_configure_filter,
+ .tx = stlc45xx_op_tx,
+ .bss_info_changed = stlc45xx_op_bss_info_changed,
+};
+
+static int stlc45xx_register_mac80211(struct stlc45xx *stlc)
+{
+ /* FIXME: SET_IEEE80211_PERM_ADDR() requires default_mac_addr
+ to be non-const for some strange reason */
+ static u8 default_mac_addr[ETH_ALEN] = {
+ 0x00, 0x02, 0xee, 0xc0, 0xff, 0xee
+ };
+ int ret;
+
+ SET_IEEE80211_PERM_ADDR(stlc->hw, default_mac_addr);
+
+ ret = ieee80211_register_hw(stlc->hw);
+ if (ret) {
+ stlc45xx_error("unable to register mac80211 hw: %d", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void stlc45xx_device_release(struct device *dev)
+{
+
+}
+
+static struct platform_device stlc45xx_device = {
+ .name = "stlc45xx",
+ .id = -1,
+
+ /* device model insists to have a release function */
+ .dev = {
+ .release = stlc45xx_device_release,
+ },
+};
+
+static int __devinit stlc45xx_probe(struct spi_device *spi)
+{
+ struct stlc45xx *stlc;
+ struct ieee80211_hw *hw;
+ int ret;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ /* mac80211 alloc */
+ hw = ieee80211_alloc_hw(sizeof(*stlc), &stlc45xx_ops);
+ if (!hw) {
+ stlc45xx_error("could not alloc ieee80211_hw");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* mac80211 clears hw->priv */
+ stlc = hw->priv;
+
+ stlc->hw = hw;
+ dev_set_drvdata(&spi->dev, stlc);
+ stlc->spi = spi;
+
+ spi->bits_per_word = 16;
+ spi->max_speed_hz = 24000000;
+
+ ret = spi_setup(spi);
+ if (ret < 0)
+ stlc45xx_error("spi_setup failed");
+
+ ret = gpio_request(stlc45xx_gpio_power, "stlc45xx power");
+ if (ret < 0) {
+ stlc45xx_error("power GPIO request failed: %d", ret);
+ return ret;
+ }
+
+ ret = gpio_request(stlc45xx_gpio_irq, "stlc45xx irq");
+ if (ret < 0) {
+ stlc45xx_error("irq GPIO request failed: %d", ret);
+ goto out;
+ }
+
+ gpio_direction_output(stlc45xx_gpio_power, 0);
+ gpio_direction_input(stlc45xx_gpio_irq);
+
+ ret = request_irq(gpio_to_irq(stlc45xx_gpio_irq),
+ stlc45xx_interrupt, IRQF_DISABLED, "stlc45xx",
+ stlc->spi);
+ if (ret < 0)
+ /* FIXME: handle the error */
+ stlc45xx_error("request_irq() failed");
+
+ set_irq_type(gpio_to_irq(stlc45xx_gpio_irq),
+ IRQ_TYPE_EDGE_RISING);
+
+ disable_irq(gpio_to_irq(stlc45xx_gpio_irq));
+
+ ret = platform_device_register(&stlc45xx_device);
+ if (ret) {
+ stlc45xx_error("Couldn't register wlan_omap device.");
+ return ret;
+ }
+ dev_set_drvdata(&stlc45xx_device.dev, stlc);
+
+ INIT_WORK(&stlc->work, stlc45xx_work);
+ INIT_WORK(&stlc->work_reset, stlc45xx_work_reset);
+ INIT_DELAYED_WORK(&stlc->work_tx_timeout, stlc45xx_work_tx_timeout);
+ mutex_init(&stlc->mutex);
+ init_completion(&stlc->fw_comp);
+ spin_lock_init(&stlc->tx_lock);
+ INIT_LIST_HEAD(&stlc->txbuffer);
+ INIT_LIST_HEAD(&stlc->tx_pending);
+ INIT_LIST_HEAD(&stlc->tx_sent);
+
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+ IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_NOISE_DBM;
+ /* four bytes for padding */
+ hw->extra_tx_headroom = sizeof(struct s_lm_data_out) + 4;
+
+ /* unit us */
+ hw->channel_change_time = 1000;
+
+ hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &stlc45xx_band_2ghz;
+
+ SET_IEEE80211_DEV(hw, &spi->dev);
+
+ BUILD_BUG_ON(sizeof(default_cal_rssi) != RSSI_CAL_ARRAY_LEN);
+ BUILD_BUG_ON(sizeof(default_cal_channels) != CHANNEL_CAL_ARRAY_LEN);
+
+ stlc->cal_rssi = kmemdup(default_cal_rssi, RSSI_CAL_ARRAY_LEN,
+ GFP_KERNEL);
+ stlc->cal_channels = kmemdup(default_cal_channels,
+ CHANNEL_CAL_ARRAY_LEN,
+ GFP_KERNEL);
+
+ ret = device_create_file(&stlc45xx_device.dev, &dev_attr_cal_rssi);
+ if (ret < 0) {
+ stlc45xx_error("failed to create sysfs file cal_rssi");
+ goto out;
+ }
+
+ ret = device_create_file(&stlc45xx_device.dev, &dev_attr_cal_channels);
+ if (ret < 0) {
+ stlc45xx_error("failed to create sysfs file cal_channels");
+ goto out;
+ }
+
+ ret = device_create_file(&stlc45xx_device.dev, &dev_attr_tx_buf);
+ if (ret < 0) {
+ stlc45xx_error("failed to create sysfs file tx_buf");
+ goto out;
+ }
+
+ ret = stlc45xx_register_mac80211(stlc);
+ if (ret < 0)
+ goto out;
+
+ stlc45xx_info("v" DRIVER_VERSION " loaded");
+
+ stlc45xx_info("config buffer 0x%x-0x%x",
+ FIRMWARE_CONFIG_START, FIRMWARE_CONFIG_END);
+ stlc45xx_info("tx 0x%x-0x%x, rx 0x%x-0x%x",
+ FIRMWARE_TXBUFFER_START, FIRMWARE_TXBUFFER_END,
+ FIRMWARE_RXBUFFER_START, FIRMWARE_RXBUFFER_END);
+
+out:
+ return ret;
+}
+
+static int __devexit stlc45xx_remove(struct spi_device *spi)
+{
+ struct stlc45xx *stlc = dev_get_drvdata(&spi->dev);
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ platform_device_unregister(&stlc45xx_device);
+
+ ieee80211_unregister_hw(stlc->hw);
+
+ free_irq(gpio_to_irq(stlc45xx_gpio_irq), spi);
+
+ gpio_free(stlc45xx_gpio_power);
+ gpio_free(stlc45xx_gpio_irq);
+
+ /* FIXME: free cal_channels and cal_rssi? */
+
+ kfree(stlc->fw);
+
+ mutex_destroy(&stlc->mutex);
+
+ /* frees also stlc */
+ ieee80211_free_hw(stlc->hw);
+ stlc = NULL;
+
+ return 0;
+}
+
+
+static struct spi_driver stlc45xx_spi_driver = {
+ .driver = {
+ /* use cx3110x name because board-n800.c uses that for the
+ * SPI port */
+ .name = "cx3110x",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = stlc45xx_probe,
+ .remove = __devexit_p(stlc45xx_remove),
+};
+
+static int __init stlc45xx_init(void)
+{
+ int ret;
+
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ ret = spi_register_driver(&stlc45xx_spi_driver);
+ if (ret < 0) {
+ stlc45xx_error("failed to register SPI driver: %d", ret);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit stlc45xx_exit(void)
+{
+ stlc45xx_debug(DEBUG_FUNC, "%s", __func__);
+
+ spi_unregister_driver(&stlc45xx_spi_driver);
+
+ stlc45xx_info("unloaded");
+}
+
+module_init(stlc45xx_init);
+module_exit(stlc45xx_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff