| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAK8P3a0w3gFzZoBzyRsi1Ta4prESf8Fp0=quAPSKMnaXvbXNTQ@mail.gmail.com>
Date: Mon, 2 May 2022 09:07:52 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Robert Jarzmik <robert.jarzmik@...e.fr>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
Arnd Bergmann <arnd@...db.de>, Daniel Mack <daniel@...que.org>,
Haojian Zhuang <haojian.zhuang@...il.com>,
Marek Vasut <marek.vasut@...il.com>,
Philipp Zabel <philipp.zabel@...il.com>,
Lubomir Rintel <lkundrak@...sk>,
Paul Parsons <lost.distance@...oo.com>,
Tomas Cech <sleep_walker@...e.com>,
Sergey Lapin <slapin@...fans.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Dominik Brodowski <linux@...inikbrodowski.net>,
Helge Deller <deller@....de>, Mark Brown <broonie@...nel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
IDE-ML <linux-ide@...r.kernel.org>,
linux-clk <linux-clk@...r.kernel.org>,
Linux PM list <linux-pm@...r.kernel.org>,
"open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
patches@...nsource.cirrus.com, linux-leds@...r.kernel.org,
linux-mmc <linux-mmc@...r.kernel.org>,
linux-mtd <linux-mtd@...ts.infradead.org>,
linux-rtc@...r.kernel.org, USB list <linux-usb@...r.kernel.org>,
Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
dri-devel <dri-devel@...ts.freedesktop.org>,
ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: [PATCH 18/48] ARM: pxa: hx4700: use gpio descriptors for audio
On Sun, May 1, 2022 at 11:41 PM Linus Walleij <linus.walleij@...aro.org> wrote:
>
> (...)
> > +static struct gpiod_lookup_table hx4700_audio_gpio_table = {
> > + .dev_id = "hx4700-audio",
> > + .table = {
> > + GPIO_LOOKUP("gpio-pxa", GPIO75_HX4700_EARPHONE_nDET,
> > + "earphone-ndet", GPIO_ACTIVE_HIGH),
>
> This looks wrong. The n in nDET in the end of the name of the GPIO line
> means active low does it not?
>
> What I usually do when I see this is to properly set it to
> GPIO_ACTIVE_LOW in the descriptor table, then invert the logic
> where it's getting used.
>
> Also rename to earphone-det instead of -ndet
Thanks for taking a look! I changed it now, but I don't know if
I got the correct number of inversions in the end. How does this look?
Arnd
commit 9d452c9cbee59fc58c940b5f7ae5a40579aab0d2
Author: Arnd Bergmann <arnd@...db.de>
Date: Wed Sep 11 14:27:13 2019 +0200
ARM: pxa: hx4700: use gpio descriptors for audio
The audio driver should not use a hardwired gpio number
from the header. Change it to use a lookup table.
Cc: Philipp Zabel <philipp.zabel@...il.com>
Cc: Paul Parsons <lost.distance@...oo.com>
Acked-by: Mark Brown <broonie@...nel.org>
Acked-by: Robert Jarzmik <robert.jarzmik@...e.fr>
Cc: alsa-devel@...a-project.org
Signed-off-by: Arnd Bergmann <arnd@...db.de>
diff --git a/arch/arm/mach-pxa/hx4700-pcmcia.c
b/arch/arm/mach-pxa/hx4700-pcmcia.c
index e8acbfc9ef6c..e2331dfe427d 100644
--- a/arch/arm/mach-pxa/hx4700-pcmcia.c
+++ b/arch/arm/mach-pxa/hx4700-pcmcia.c
@@ -10,7 +10,7 @@
#include <linux/irq.h>
#include <asm/mach-types.h>
-#include <mach/hx4700.h>
+#include "hx4700.h"
#include <pcmcia/soc_common.h>
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index 140a44cb2989..2ae06edf413c 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -41,7 +41,7 @@
#include "pxa27x.h"
#include "addr-map.h"
-#include <mach/hx4700.h>
+#include "hx4700.h"
#include <linux/platform_data/irda-pxaficp.h>
#include <sound/ak4641.h>
@@ -834,6 +834,19 @@ static struct i2c_board_info i2c_board_info[]
__initdata = {
},
};
+static struct gpiod_lookup_table hx4700_audio_gpio_table = {
+ .dev_id = "hx4700-audio",
+ .table = {
+ GPIO_LOOKUP("gpio-pxa", GPIO75_HX4700_EARPHONE_nDET,
+ "earphone-det", GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("gpio-pxa", GPIO92_HX4700_HP_DRIVER,
+ "hp-driver", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("gpio-pxa", GPIO107_HX4700_SPK_nSD,
+ "spk-sd", GPIO_ACTIVE_LOW),
+ { },
+ },
+};
+
static struct platform_device audio = {
.name = "hx4700-audio",
.id = -1,
@@ -895,6 +908,7 @@ static void __init hx4700_init(void)
gpiod_add_lookup_table(&bq24022_gpiod_table);
gpiod_add_lookup_table(&gpio_vbus_gpiod_table);
+ gpiod_add_lookup_table(&hx4700_audio_gpio_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
pwm_add_table(hx4700_pwm_lookup, ARRAY_SIZE(hx4700_pwm_lookup));
diff --git a/arch/arm/mach-pxa/include/mach/hx4700.h
b/arch/arm/mach-pxa/hx4700.h
similarity index 99%
rename from arch/arm/mach-pxa/include/mach/hx4700.h
rename to arch/arm/mach-pxa/hx4700.h
index 0c30e6d9c660..ce2db33989e1 100644
--- a/arch/arm/mach-pxa/include/mach/hx4700.h
+++ b/arch/arm/mach-pxa/hx4700.h
@@ -10,7 +10,7 @@
#include <linux/gpio.h>
#include <linux/mfd/asic3.h>
-#include "irqs.h" /* PXA_NR_BUILTIN_GPIO */
+#include <mach/irqs.h> /* PXA_NR_BUILTIN_GPIO */
#define HX4700_ASIC3_GPIO_BASE PXA_NR_BUILTIN_GPIO
#define HX4700_EGPIO_BASE (HX4700_ASIC3_GPIO_BASE + ASIC3_NUM_GPIOS)
diff --git a/sound/soc/pxa/hx4700.c b/sound/soc/pxa/hx4700.c
index 7334fac758de..a0734b742322 100644
--- a/sound/soc/pxa/hx4700.c
+++ b/sound/soc/pxa/hx4700.c
@@ -10,7 +10,7 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <sound/core.h>
#include <sound/jack.h>
@@ -18,10 +18,10 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include <mach/hx4700.h>
#include <asm/mach-types.h>
#include "pxa2xx-i2s.h"
+static struct gpio_desc *gpiod_hp_driver, *gpiod_spk_sd;
static struct snd_soc_jack hs_jack;
/* Headphones jack detection DAPM pin */
@@ -40,9 +40,7 @@ static struct snd_soc_jack_pin hs_jack_pin[] = {
/* Headphones jack detection GPIO */
static struct snd_soc_jack_gpio hs_jack_gpio = {
- .gpio = GPIO75_HX4700_EARPHONE_nDET,
- .invert = true,
- .name = "hp-gpio",
+ .name = "earphone-det",
.report = SND_JACK_HEADPHONE,
.debounce_time = 200,
};
@@ -81,14 +79,14 @@ static const struct snd_soc_ops hx4700_ops = {
static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
- gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
+ gpiod_set_value(gpiod_spk_sd, !!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
- gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
+ gpiod_set_value(gpiod_hp_driver, !!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
@@ -162,11 +160,6 @@ static struct snd_soc_card snd_soc_card_hx4700 = {
.fully_routed = true,
};
-static struct gpio hx4700_audio_gpios[] = {
- { GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
- { GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
-};
-
static int hx4700_audio_probe(struct platform_device *pdev)
{
int ret;
@@ -174,26 +167,26 @@ static int hx4700_audio_probe(struct
platform_device *pdev)
if (!machine_is_h4700())
return -ENODEV;
- ret = gpio_request_array(hx4700_audio_gpios,
- ARRAY_SIZE(hx4700_audio_gpios));
+ gpiod_hp_driver = devm_gpiod_get(&pdev->dev, "hp-driver",
GPIOD_OUT_HIGH);
+ ret = PTR_ERR_OR_ZERO(gpiod_hp_driver);
+ if (ret)
+ return ret;
+ gpiod_spk_sd = devm_gpiod_get(&pdev->dev, "spk-sd", GPIOD_OUT_LOW);
+ ret = PTR_ERR_OR_ZERO(gpiod_spk_sd);
if (ret)
return ret;
+ hs_jack_gpio.gpiod_dev = &pdev->dev;
snd_soc_card_hx4700.dev = &pdev->dev;
ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_hx4700);
- if (ret)
- gpio_free_array(hx4700_audio_gpios,
- ARRAY_SIZE(hx4700_audio_gpios));
return ret;
}
static int hx4700_audio_remove(struct platform_device *pdev)
{
- gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
- gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
-
- gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
+ gpiod_set_value(gpiod_hp_driver, 0);
+ gpiod_set_value(gpiod_spk_sd, 0);
return 0;
}
Powered by blists - more mailing lists