From: <miaoqing@qti.qualcomm.com>
To: <linville@tuxdriver.com>
Cc: <linux-wireless@vger.kernel.org>, <ath9k-devel@qca.qualcomm.com>,
Miaoqing Pan <miaoqing@qti.qualcomm.com>
Subject: [PATCH] ath9k: add extra GPIO led support
Date: Wed, 1 Apr 2015 10:19:57 +0800 [thread overview]
Message-ID: <1427854797-30332-1-git-send-email-miaoqing@qca.qualcomm.com> (raw)
From: Miaoqing Pan <miaoqing@qca.qualcomm.com>
ar9550 or later chips, the AR_GPIO_IN_OUT register only can
control GPIO[0:3]. For the extra GPIO, use standard GPIO calls
instead of WMAC internal registers.
Signed-off-by: Miaoqing Pan <miaoqing@qca.qualcomm.com>
---
drivers/net/wireless/ath/ath9k/gpio.c | 8 +++++++-
drivers/net/wireless/ath/ath9k/hw.c | 17 +++++++++++++++--
drivers/net/wireless/ath/ath9k/hw.h | 1 +
drivers/net/wireless/ath/ath9k/reg.h | 4 ++++
4 files changed, 27 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c
index 86d46c1..2847067 100644
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -69,9 +69,15 @@ void ath_fill_led_pin(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
- if (AR_SREV_9100(ah) || (ah->led_pin >= 0))
+ if (AR_SREV_9100(ah))
return;
+ if (ah->led_pin >= 0) {
+ if (!((1 << ah->led_pin) & AR_GPIO_OE_OUT_MASK))
+ ath9k_hw_request_gpio(ah, ah->led_pin, "ath9k-led");
+ return;
+ }
+
if (AR_SREV_9287(ah))
ah->led_pin = ATH_LED_PIN_9287;
else if (AR_SREV_9485(sc->sc_ah))
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index a8c87df..fd9ca2b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -20,6 +20,7 @@
#include <linux/time.h>
#include <linux/bitops.h>
#include <linux/etherdevice.h>
+#include <linux/gpio.h>
#include <asm/unaligned.h>
#include "hw.h"
@@ -2677,11 +2678,23 @@ void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
if (AR_SREV_9271(ah))
val = ~val;
- REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
- AR_GPIO_BIT(gpio));
+ if ((1 << gpio) & AR_GPIO_OE_OUT_MASK)
+ REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
+ AR_GPIO_BIT(gpio));
+ else
+ gpio_set_value(gpio, val & 1);
}
EXPORT_SYMBOL(ath9k_hw_set_gpio);
+void ath9k_hw_request_gpio(struct ath_hw *ah, u32 gpio, const char *label)
+{
+ if (gpio >= ah->caps.num_gpio_pins)
+ return;
+
+ gpio_request_one(gpio, GPIOF_DIR_OUT | GPIOF_INIT_LOW, label);
+}
+EXPORT_SYMBOL(ath9k_hw_request_gpio);
+
void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
{
REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index aaec945..bcbf117 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -1010,6 +1010,7 @@ u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio);
void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
u32 ah_signal_type);
void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val);
+void ath9k_hw_request_gpio(struct ath_hw *ah, u32 gpio, const char *label);
void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna);
/* General Operation */
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 1234399..caba54d 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -958,6 +958,8 @@
#define AR_SREV_9550(_ah) \
(((_ah)->hw_version.macVersion == AR_SREV_VERSION_9550))
+#define AR_SREV_9550_OR_LATER(_ah) \
+ (((_ah)->hw_version.macVersion >= AR_SREV_VERSION_9550))
#define AR_SREV_9580(_ah) \
(((_ah)->hw_version.macVersion == AR_SREV_VERSION_9580) && \
@@ -1128,6 +1130,8 @@ enum {
#define AR_GPIO_OE_OUT (AR_SREV_9340(ah) ? 0x4030 : \
(AR_SREV_9300_20_OR_LATER(ah) ? 0x4050 : 0x404c))
+#define AR_GPIO_OE_OUT_MASK (AR_SREV_9550_OR_LATER(ah) ? \
+ 0x0000000F : 0xFFFFFFFF)
#define AR_GPIO_OE_OUT_DRV 0x3
#define AR_GPIO_OE_OUT_DRV_NO 0x0
#define AR_GPIO_OE_OUT_DRV_LOW 0x1
--
1.9.1
next reply other threads:[~2015-04-01 2:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-01 2:19 miaoqing [this message]
2015-04-07 17:15 ` ath9k: add extra GPIO led support Kalle Valo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1427854797-30332-1-git-send-email-miaoqing@qca.qualcomm.com \
--to=miaoqing@qti.qualcomm.com \
--cc=ath9k-devel@qca.qualcomm.com \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).