wl1271: add wl1271 driver files

This driver supports the wl1271 chipset from Texas Instruments based on the
WiLink(tm) 6.0 mobile platform.  Support for wl1273 should be relatively easy
to add.  This chipset is designed for embedded devices, with good powersaving
capabilities.  The wl1271 chipset is the successor of wl1251 and supports the
802.11b/g/n standards, but currently this driver supports only b/g.

More information about this chipset can be found here:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12762&contentId=29993

Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 397 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_init.c b/drivers/net/wireless/wl12xx/wl1271_init.c
new file mode 100644
index 000000000000..490df217605a
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_init.c
@@ -0,0 +1,397 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@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 <linux/kernel.h>
+#include <linux/module.h>
+
+#include "wl1271_init.h"
+#include "wl12xx_80211.h"
+#include "wl1271_acx.h"
+#include "wl1271_cmd.h"
+#include "wl1271_reg.h"
+
+static int wl1271_init_hwenc_config(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_feature_cfg(wl);
+	if (ret < 0) {
+		wl1271_warning("couldn't set feature config");
+		return ret;
+	}
+
+	ret = wl1271_cmd_set_default_wep_key(wl, wl->default_key);
+	if (ret < 0) {
+		wl1271_warning("couldn't set default key");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int wl1271_init_templates_config(struct wl1271 *wl)
+{
+	int ret;
+
+	/* send empty templates for fw memory reservation */
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,
+				      sizeof(struct wl12xx_probe_req_template));
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, NULL,
+				      sizeof(struct wl12xx_null_data_template));
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, NULL,
+				      sizeof(struct wl12xx_ps_poll_template));
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, NULL,
+				      sizeof
+				      (struct wl12xx_qos_null_data_template));
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE, NULL,
+				      sizeof
+				      (struct wl12xx_probe_resp_template));
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, NULL,
+				      sizeof
+				      (struct wl12xx_beacon_template));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_rx_config(struct wl1271 *wl, u32 config, u32 filter)
+{
+	int ret;
+
+	ret = wl1271_acx_rx_msdu_life_time(wl, RX_MSDU_LIFETIME_DEF);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_rx_config(wl, config, filter);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_phy_config(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_pd_threshold(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_slot(wl, DEFAULT_SLOT_TIME);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_group_address_tbl(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_service_period_timeout(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_rts_threshold(wl, RTS_THRESHOLD_DEF);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_beacon_filter(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_beacon_filter_opt(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_beacon_filter_table(wl);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_pta(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_sg_enable(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_acx_sg_cfg(wl);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_energy_detection(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_cca_threshold(wl);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_beacon_broadcast(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_bcn_dtim_options(wl);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wl1271_init_general_parms(struct wl1271 *wl)
+{
+	struct wl1271_general_parms *gen_parms;
+	int ret;
+
+	gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
+	if (!gen_parms)
+		return -ENOMEM;
+
+	gen_parms->id = TEST_CMD_INI_FILE_GENERAL_PARAM;
+
+	gen_parms->ref_clk = REF_CLK_38_4_E;
+	/* FIXME: magic numbers */
+	gen_parms->settling_time = 5;
+	gen_parms->clk_valid_on_wakeup = 0;
+	gen_parms->dc2dcmode = 0;
+	gen_parms->single_dual_band = 0;
+	gen_parms->tx_bip_fem_autodetect = 1;
+	gen_parms->tx_bip_fem_manufacturer = 1;
+	gen_parms->settings = 1;
+
+	ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
+	if (ret < 0) {
+		wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
+		return ret;
+	}
+
+	kfree(gen_parms);
+	return 0;
+}
+
+static int wl1271_init_radio_parms(struct wl1271 *wl)
+{
+	/*
+	 * FIXME: All these magic numbers should be moved to some place where
+	 * they can be configured (separate file?)
+	 */
+
+	struct wl1271_radio_parms *radio_parms;
+	int ret;
+	u8 compensation[] = { 0xec, 0xf6, 0x00, 0x0c, 0x18, 0xf8, 0xfc, 0x00,
+			      0x08, 0x10, 0xf0, 0xf8, 0x00, 0x0a, 0x14 };
+
+	u8 tx_rate_limits_normal[]   = { 0x1e, 0x1f, 0x22, 0x24, 0x28, 0x29 };
+	u8 tx_rate_limits_degraded[] = { 0x1b, 0x1c, 0x1e, 0x20, 0x24, 0x25 };
+
+	u8 tx_channel_limits_11b[] = { 0x22, 0x50, 0x50, 0x50,
+				       0x50, 0x50, 0x50, 0x50,
+				       0x50, 0x50, 0x22, 0x50,
+				       0x22, 0x50 };
+
+	u8 tx_channel_limits_ofdm[] = { 0x20, 0x50, 0x50, 0x50,
+					0x50, 0x50, 0x50, 0x50,
+					0x50, 0x50, 0x20, 0x50,
+					0x20, 0x50 };
+
+	u8 tx_pdv_rate_offsets[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+	u8 tx_ibias[] = { 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x27 };
+
+	radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
+	if (!radio_parms)
+		return -ENOMEM;
+
+	radio_parms->id = TEST_CMD_INI_FILE_RADIO_PARAM;
+
+	/* Static radio parameters */
+	radio_parms->rx_trace_loss = 10;
+	radio_parms->tx_trace_loss = 10;
+	memcpy(radio_parms->rx_rssi_and_proc_compens, compensation,
+	       sizeof(compensation));
+
+	/* We don't set the 5GHz -- N/A */
+
+	/* Dynamic radio parameters */
+	radio_parms->tx_ref_pd_voltage = cpu_to_le16(0x24e);
+	radio_parms->tx_ref_power = 0x78;
+	radio_parms->tx_offset_db = 0x0;
+
+	memcpy(radio_parms->tx_rate_limits_normal, tx_rate_limits_normal,
+	       sizeof(tx_rate_limits_normal));
+	memcpy(radio_parms->tx_rate_limits_degraded, tx_rate_limits_degraded,
+	       sizeof(tx_rate_limits_degraded));
+
+	memcpy(radio_parms->tx_channel_limits_11b, tx_channel_limits_11b,
+	       sizeof(tx_channel_limits_11b));
+	memcpy(radio_parms->tx_channel_limits_ofdm, tx_channel_limits_ofdm,
+	       sizeof(tx_channel_limits_ofdm));
+	memcpy(radio_parms->tx_pdv_rate_offsets, tx_pdv_rate_offsets,
+	       sizeof(tx_pdv_rate_offsets));
+	memcpy(radio_parms->tx_ibias, tx_ibias,
+	       sizeof(tx_ibias));
+
+	radio_parms->rx_fem_insertion_loss = 0x14;
+
+	ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
+	if (ret < 0)
+		wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
+
+	kfree(radio_parms);
+	return ret;
+}
+
+int wl1271_hw_init(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_init_general_parms(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_init_radio_parms(wl);
+	if (ret < 0)
+		return ret;
+
+	/* Template settings */
+	ret = wl1271_init_templates_config(wl);
+	if (ret < 0)
+		return ret;
+
+	/* Default memory configuration */
+	ret = wl1271_acx_init_mem_config(wl);
+	if (ret < 0)
+		return ret;
+
+	/* RX config */
+	ret = wl1271_init_rx_config(wl,
+				       RX_CFG_PROMISCUOUS | RX_CFG_TSF,
+				       RX_FILTER_OPTION_DEF);
+	/* RX_CONFIG_OPTION_ANY_DST_ANY_BSS,
+	   RX_FILTER_OPTION_FILTER_ALL); */
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* PHY layer config */
+	ret = wl1271_init_phy_config(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Beacon filtering */
+	ret = wl1271_init_beacon_filter(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Configure TX patch complete interrupt behavior */
+	ret = wl1271_acx_tx_config_options(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* RX complete interrupt pacing */
+	ret = wl1271_acx_init_rx_interrupt(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Bluetooth WLAN coexistence */
+	ret = wl1271_init_pta(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Energy detection */
+	ret = wl1271_init_energy_detection(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Beacons and boradcast settings */
+	ret = wl1271_init_beacon_broadcast(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Default fragmentation threshold */
+	ret = wl1271_acx_frag_threshold(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Default TID configuration */
+	ret = wl1271_acx_tid_cfg(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Default AC configuration */
+	ret = wl1271_acx_ac_cfg(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Configure TX rate classes */
+	ret = wl1271_acx_rate_policies(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Enable data path */
+	ret = wl1271_cmd_data_path(wl, wl->channel, 1);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Configure for ELP power saving */
+	ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	/* Configure HW encryption */
+	ret = wl1271_init_hwenc_config(wl);
+	if (ret < 0)
+		goto out_free_memmap;
+
+	return 0;
+
+ out_free_memmap:
+	kfree(wl->target_mem_map);
+
+	return ret;
+}