From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../mac80211/patches/542-ath9k_debugfs_diag.patch  | 139 +++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch

(limited to 'package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch')

diff --git a/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch b/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
new file mode 100644
index 0000000..9758d5f
--- /dev/null
+++ b/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
@@ -0,0 +1,139 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -1449,6 +1449,50 @@ static const struct file_operations fops
+ #endif
+ 
+ 
++static ssize_t read_file_diag(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_hw *ah = sc->sc_ah;
++	char buf[32];
++	unsigned int len;
++
++	len = sprintf(buf, "0x%08lx\n", ah->diag);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_diag(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_hw *ah = sc->sc_ah;
++	unsigned long diag;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EFAULT;
++
++	buf[len] = '\0';
++	if (kstrtoul(buf, 0, &diag))
++		return -EINVAL;
++
++	ah->diag = diag;
++	ath9k_hw_update_diag(ah);
++
++	return count;
++}
++
++static const struct file_operations fops_diag = {
++	.read = read_file_diag,
++	.write = write_file_diag,
++	.open = simple_open,
++	.owner = THIS_MODULE,
++	.llseek = default_llseek,
++};
++
++
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+ 	struct ath_common *common = ath9k_hw_common(ah);
+@@ -1476,6 +1520,8 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 	debugfs_create_file("gpio_led", S_IWUSR,
+ 			   sc->debug.debugfs_phy, sc, &fops_gpio_led);
+ #endif
++	debugfs_create_file("diag", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
++			    sc, &fops_diag);
+ 	debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
+ 				    read_file_dma);
+ 	debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -519,6 +519,12 @@ enum {
+ 	ATH9K_RESET_COLD,
+ };
+ 
++enum {
++	ATH_DIAG_DISABLE_RX,
++	ATH_DIAG_DISABLE_TX,
++	ATH_DIAG_TRIGGER_ERROR,
++};
++
+ struct ath9k_hw_version {
+ 	u32 magic;
+ 	u16 devid;
+@@ -804,6 +810,8 @@ struct ath_hw {
+ 	u32 rfkill_polarity;
+ 	u32 ah_flags;
+ 
++	unsigned long diag;
++
+ 	bool reset_power_on;
+ 	bool htc_reset_init;
+ 
+@@ -1066,6 +1074,7 @@ void ath9k_hw_check_nav(struct ath_hw *a
+ bool ath9k_hw_check_alive(struct ath_hw *ah);
+ 
+ bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode);
++void ath9k_hw_update_diag(struct ath_hw *ah);
+ 
+ /* Generic hw timer primitives */
+ struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1809,6 +1809,20 @@ u32 ath9k_hw_get_tsf_offset(struct times
+ }
+ EXPORT_SYMBOL(ath9k_hw_get_tsf_offset);
+ 
++void ath9k_hw_update_diag(struct ath_hw *ah)
++{
++	if (test_bit(ATH_DIAG_DISABLE_RX, &ah->diag))
++		REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
++	else
++		REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
++
++	if (test_bit(ATH_DIAG_DISABLE_TX, &ah->diag))
++		REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
++	else
++		REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
++}
++EXPORT_SYMBOL(ath9k_hw_update_diag);
++
+ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
+ 		   struct ath9k_hw_cal_data *caldata, bool fastcc)
+ {
+@@ -2017,6 +2031,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+ 		ar9003_hw_disable_phy_restart(ah);
+ 
+ 	ath9k_hw_apply_gpio_override(ah);
++	ath9k_hw_update_diag(ah);
+ 
+ 	if (AR_SREV_9565(ah) && common->bt_ant_diversity)
+ 		REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -533,6 +533,11 @@ irqreturn_t ath_isr(int irq, void *dev)
+ 	if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
+ 		return IRQ_HANDLED;
+ 
++	if (test_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag)) {
++		status |= ATH9K_INT_FATAL;
++		clear_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag);
++	}
++
+ 	/*
+ 	 * If there are no status bits set, then this interrupt was not
+ 	 * for me (should have been caught above).
-- 
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