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418 lines
12 KiB
418 lines
12 KiB
--- a/drivers/net/wireless/ath/ath9k/channel.c
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+++ b/drivers/net/wireless/ath/ath9k/channel.c
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@@ -15,6 +15,8 @@
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*/
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#include "ath9k.h"
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+#include <linux/ath9k_platform.h>
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+#include "hsr.h"
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/* Set/change channels. If the channel is really being changed, it's done
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* by reseting the chip. To accomplish this we must first cleanup any pending
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@@ -22,6 +24,7 @@
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*/
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static int ath_set_channel(struct ath_softc *sc)
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{
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+ struct ath9k_platform_data *pdata = sc->dev->platform_data;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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struct ieee80211_hw *hw = sc->hw;
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@@ -42,6 +45,11 @@ static int ath_set_channel(struct ath_so
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ath_dbg(common, CONFIG, "Set channel: %d MHz width: %d\n",
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chan->center_freq, chandef->width);
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+ if (pdata && pdata->ubnt_hsr) {
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+ ath9k_hsr_enable(ah, chandef->width, chan->center_freq);
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+ ath9k_hsr_status(ah);
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+ }
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+
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/* update survey stats for the old channel before switching */
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spin_lock_irqsave(&common->cc_lock, flags);
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ath_update_survey_stats(sc);
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--- /dev/null
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+++ b/drivers/net/wireless/ath/ath9k/hsr.c
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@@ -0,0 +1,247 @@
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+/*
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+ *
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2015 Kirill Berezin
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ *
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+ */
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+
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+#include <linux/io.h>
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+#include <linux/slab.h>
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+#include <linux/module.h>
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+#include <linux/time.h>
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+#include <linux/bitops.h>
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+#include <linux/etherdevice.h>
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+#include <linux/rtnetlink.h>
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+#include <asm/unaligned.h>
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+
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+#include "hw.h"
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+#include "ath9k.h"
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+
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+#define HSR_GPIO_CSN 8
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+#define HSR_GPIO_CLK 6
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+#define HSR_GPIO_DOUT 7
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+#define HSR_GPIO_DIN 5
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+
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+/* delays are in useconds */
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+#define HSR_DELAY_HALF_TICK 100
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+#define HSR_DELAY_PRE_WRITE 75
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+#define HSR_DELAY_FINAL 20000
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+#define HSR_DELAY_TRAILING 200
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+
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+void ath9k_hsr_init(struct ath_hw *ah)
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+{
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+ ath9k_hw_gpio_request_in(ah, HSR_GPIO_DIN, NULL);
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+ ath9k_hw_gpio_request_out(ah, HSR_GPIO_CSN, NULL,
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+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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+ ath9k_hw_gpio_request_out(ah, HSR_GPIO_CLK, NULL,
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+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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+ ath9k_hw_gpio_request_out(ah, HSR_GPIO_DOUT, NULL,
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+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CSN, 1);
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CLK, 0);
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_DOUT, 0);
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+
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+ udelay(HSR_DELAY_TRAILING);
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+}
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+
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+static u32 ath9k_hsr_write_byte(struct ath_hw *ah, int delay, u32 value)
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+{
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+ struct ath_common *common = ath9k_hw_common(ah);
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+ int i;
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+ u32 rval = 0;
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+
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+ udelay(delay);
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CLK, 0);
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+ udelay(HSR_DELAY_HALF_TICK);
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CSN, 0);
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+ udelay(HSR_DELAY_HALF_TICK);
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+
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+ for (i = 0; i < 8; ++i) {
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+ rval = rval << 1;
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+
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+ /* pattern is left to right, that is 7-th bit runs first */
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_DOUT, (value >> (7 - i)) & 0x1);
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+ udelay(HSR_DELAY_HALF_TICK);
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CLK, 1);
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+ udelay(HSR_DELAY_HALF_TICK);
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+
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+ rval |= ath9k_hw_gpio_get(ah, HSR_GPIO_DIN);
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CLK, 0);
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+ udelay(HSR_DELAY_HALF_TICK);
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+ }
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+
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+ ath9k_hw_set_gpio(ah, HSR_GPIO_CSN, 1);
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+ udelay(HSR_DELAY_HALF_TICK);
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+
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+ ath_dbg(common, CONFIG, "ath9k_hsr_write_byte: write byte %d return value is %d %c\n",
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+ value, rval, rval > 32 ? rval : '-');
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+
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+ return rval & 0xff;
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+}
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+
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+static int ath9k_hsr_write_a_chain(struct ath_hw *ah, char *chain, int items)
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+{
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+ int status = 0;
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+ int i = 0;
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+ int err;
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+
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+ /* a preamble */
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+ ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, 0);
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+ status = ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, 0);
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+
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+ /* clear HSR's reply buffer */
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+ if (status) {
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+ int loop = 0;
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+
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+ for (loop = 0; (loop < 42) && status; ++loop)
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+ status = ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE,
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+ 0);
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+
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+ if (loop >= 42) {
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+ ATH_DBG_WARN(1,
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+ "ath9k_hsr_write_a_chain: can't clear an output buffer after a 42 cycles.\n");
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+ return -1;
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+ }
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+ }
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+
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+ for (i = 0; (i < items) && (chain[i] != 0); ++i)
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+ ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, (u32)chain[i]);
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+
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+ ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, 0);
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+ mdelay(HSR_DELAY_FINAL / 1000);
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+
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+ /* reply */
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+ memset(chain, 0, items);
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+
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+ ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, 0);
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+ udelay(HSR_DELAY_TRAILING);
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+
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+ for (i = 0; i < (items - 1); ++i) {
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+ u32 ret;
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+
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+ ret = ath9k_hsr_write_byte(ah, HSR_DELAY_PRE_WRITE, 0);
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+ if (ret != 0)
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+ chain[i] = (char)ret;
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+ else
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+ break;
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+
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+ udelay(HSR_DELAY_TRAILING);
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+ }
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+
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+ if (i <= 1)
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+ return 0;
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+
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+ err = kstrtoint(chain + 1, 10, &i);
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+ if (err)
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+ return err;
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+
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+ return i;
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+}
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+
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+int ath9k_hsr_disable(struct ath_hw *ah)
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+{
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+ char cmd[10] = {'b', '4', '0', 0, 0, 0, 0, 0, 0, 0};
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+ int ret;
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+
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if ((ret > 0) && (*cmd == 'B'))
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+ return 0;
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+
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+ return -1;
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+}
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+
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+int ath9k_hsr_enable(struct ath_hw *ah, int bw, int fq)
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+{
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+ char cmd[10];
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+ int ret;
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+
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+ /* Bandwidth argument is 0 sometimes. Assume default 802.11bgn
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+ * 20MHz on invalid values
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+ */
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+ if ((bw != 5) && (bw != 10) && (bw != 20) && (bw != 40))
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+ bw = 20;
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+
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+ memset(cmd, 0, sizeof(cmd));
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+ *cmd = 'b';
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+ snprintf(cmd + 1, 3, "%02d", bw);
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+
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if ((*cmd != 'B') || (ret != bw)) {
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+ ATH_DBG_WARN(1,
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+ "ath9k_hsr_enable: failed changing bandwidth -> set (%d,%d) reply (%d, %d)\n",
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+ 'b', bw, *cmd, ret);
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+ return -1;
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+ }
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+
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+ memset(cmd, 0, sizeof(cmd));
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+ *cmd = 'x';
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if (*cmd != 'X') {
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+ ATH_DBG_WARN(1,
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+ "ath9k_hsr_enable: failed 'x' command -> reply (%d, %d)\n",
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+ *cmd, ret);
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+ return -1;
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+ }
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+
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+ memset(cmd, 0, sizeof(cmd));
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+ *cmd = 'm';
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if (*cmd != 'M') {
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+ ATH_DBG_WARN(1,
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+ "ath9k_hsr_enable: failed 'm' command -> reply (%d, %d)\n",
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+ *cmd, ret);
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+ return -1;
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+ }
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+
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+ memset(cmd, 0, sizeof(cmd));
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+ *cmd = 'f';
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+ snprintf(cmd + 1, 6, "%05d", fq);
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if ((*cmd != 'F') && (ret != fq)) {
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+ ATH_DBG_WARN(1,
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+ "ath9k_hsr_enable: failed set frequency -> reply (%d, %d)\n",
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+ *cmd, ret);
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+ return -1;
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+ }
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+
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+ return 0;
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+}
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+
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+int ath9k_hsr_status(struct ath_hw *ah)
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+{
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+ char cmd[10] = {'s', 0, 0, 0, 0, 0, 0, 0, 0, 0};
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+ int ret;
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+
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+ ret = ath9k_hsr_write_a_chain(ah, cmd, sizeof(cmd));
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+ if (*cmd != 'S') {
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+ ATH_DBG_WARN(1, "ath9k_hsr_status: returned %d,%d\n", *cmd,
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+ ret);
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+ return -1;
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+ }
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+
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+ return 0;
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+}
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--- /dev/null
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+++ b/drivers/net/wireless/ath/ath9k/hsr.h
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@@ -0,0 +1,48 @@
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+/*
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2015 Kirill Berezin
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ */
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+
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+#ifndef HSR_H
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+#define HSR_H
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+
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+#ifdef CPTCFG_ATH9K_UBNTHSR
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+
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+void ath9k_hsr_init(struct ath_hw *ah);
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+int ath9k_hsr_disable(struct ath_hw *ah);
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+int ath9k_hsr_enable(struct ath_hw *ah, int bw, int fq);
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+int ath9k_hsr_status(struct ath_hw *ah);
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+
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+#else
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+static inline void ath9k_hsr_init(struct ath_hw *ah) {}
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+
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+static inline int ath9k_hsr_enable(struct ath_hw *ah, int bw, int fq)
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+{
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+ return 0;
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+}
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+
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+static inline int ath9k_hsr_disable(struct ath_hw *ah) { return 0; }
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+static inline int ath9k_hsr_status(struct ath_hw *ah) { return 0; }
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+
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+#endif
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+
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+#endif /* HSR_H */
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -16,8 +16,10 @@
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#include <linux/nl80211.h>
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#include <linux/delay.h>
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+#include <linux/ath9k_platform.h>
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#include "ath9k.h"
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#include "btcoex.h"
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+#include "hsr.h"
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u8 ath9k_parse_mpdudensity(u8 mpdudensity)
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{
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@@ -649,6 +651,7 @@ void ath_reset_work(struct work_struct *
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static int ath9k_start(struct ieee80211_hw *hw)
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{
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struct ath_softc *sc = hw->priv;
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+ struct ath9k_platform_data *pdata = sc->dev->platform_data;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan;
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@@ -727,6 +730,11 @@ static int ath9k_start(struct ieee80211_
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AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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}
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+ if (pdata && pdata->ubnt_hsr) {
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+ ath9k_hsr_init(ah);
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+ ath9k_hsr_disable(ah);
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+ }
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+
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/*
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* Reset key cache to sane defaults (all entries cleared) instead of
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* semi-random values after suspend/resume.
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--- a/drivers/net/wireless/ath/ath9k/Makefile
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+++ b/drivers/net/wireless/ath/ath9k/Makefile
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@@ -16,6 +16,7 @@ ath9k-$(CPTCFG_ATH9K_DFS_CERTIFIED) += d
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ath9k-$(CPTCFG_ATH9K_TX99) += tx99.o
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ath9k-$(CPTCFG_ATH9K_WOW) += wow.o
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ath9k-$(CPTCFG_ATH9K_HWRNG) += rng.o
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+ath9k-$(CPTCFG_ATH9K_UBNTHSR) += hsr.o
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ath9k-$(CPTCFG_ATH9K_DEBUGFS) += debug.o
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--- a/include/linux/ath9k_platform.h
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+++ b/include/linux/ath9k_platform.h
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@@ -53,6 +53,8 @@ struct ath9k_platform_data {
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unsigned num_btns;
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const struct gpio_keys_button *btns;
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unsigned btn_poll_interval;
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+
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+ bool ubnt_hsr;
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};
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#endif /* _LINUX_ATH9K_PLATFORM_H */
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--- a/local-symbols
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+++ b/local-symbols
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@@ -114,6 +114,7 @@ ATH9K_WOW=
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ATH9K_RFKILL=
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ATH9K_CHANNEL_CONTEXT=
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ATH9K_PCOEM=
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+ATH9K_UBNTHSR=
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ATH9K_HTC=
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ATH9K_HTC_DEBUGFS=
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ATH9K_HWRNG=
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--- a/drivers/net/wireless/ath/ath9k/Kconfig
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+++ b/drivers/net/wireless/ath/ath9k/Kconfig
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@@ -59,6 +59,19 @@ config ATH9K_AHB
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Say Y, if you have a SoC with a compatible built-in
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wireless MAC. Say N if unsure.
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+config ATH9K_UBNTHSR
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+ bool "Ubiquiti UniFi Outdoor Plus HSR support"
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+ depends on ATH9K
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+ ---help---
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+ This options enables code to control the HSR RF
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+ filter in the receive path of the Ubiquiti UniFi
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+ Outdoor Plus access point.
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+
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+ Say Y if you want to use the access point. The
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+ code will only be used if the device is detected,
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+ so it does not harm other setup other than occupying
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+ a bit of memory.
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+
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config ATH9K_DEBUGFS
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bool "Atheros ath9k debugging"
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depends on ATH9K && DEBUG_FS
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|