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From: "Alex G." <mr.nuke.me@gmail.com>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Jernej Skrabec <jernej.skrabec@siol.net>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Neil Armstrong <narmstrong@baylibre.com>,
	David Airlie <airlied@linux.ie>, Mark Brown <broonie@kernel.org>,
	Jonas Karlman <jonas@kwiboo.se>,
	open list <linux-kernel@vger.kernel.org>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Rob Herring <robh+dt@kernel.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Subject: Re: [PATCH v2 1/2] drm/bridge: sii902x: Enable I/O and core VCC supplies if present
Date: Tue, 20 Oct 2020 09:01:27 -0500	[thread overview]
Message-ID: <5c21a4a4-717c-9f8a-9764-6e3fb9554e46@gmail.com> (raw)
In-Reply-To: <20201020071628.GA1737816@ravnborg.org>



On 10/20/20 2:16 AM, Sam Ravnborg wrote:
> Hi Alex.

[snip]

>>
>>
>>> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
>>> index 33fd33f953ec..d15e9f2c0d8a 100644
>>> --- a/drivers/gpu/drm/bridge/sii902x.c
>>> +++ b/drivers/gpu/drm/bridge/sii902x.c
>>> @@ -17,6 +17,7 @@
>>>    #include <linux/i2c.h>
>>>    #include <linux/module.h>
>>>    #include <linux/regmap.h>
>>> +#include <linux/regulator/consumer.h>
>>>    #include <linux/clk.h>
>>>    #include <drm/drm_atomic_helper.h>
>>> @@ -168,6 +169,8 @@ struct sii902x {
>>>    	struct drm_connector connector;
>>>    	struct gpio_desc *reset_gpio;
>>>    	struct i2c_mux_core *i2cmux;
>>> +	struct regulator *iovcc;
>>> +	struct regulator *cvcc12;
>>>    	/*
>>>    	 * Mutex protects audio and video functions from interfering
>>>    	 * each other, by keeping their i2c command sequences atomic.
>>> @@ -954,13 +957,13 @@ static const struct drm_bridge_timings default_sii902x_timings = {
>>>    		 | DRM_BUS_FLAG_DE_HIGH,
>>>    };
>>> +static int sii902x_init(struct sii902x *sii902x);
> Please re-arrange the code so this prototype is not needed.

I'd be happy to re-arrange things. It will make the diff look a lot 
bigger than what it is. Is that okay?

Alex

>>> +
>>>    static int sii902x_probe(struct i2c_client *client,
>>>    			 const struct i2c_device_id *id)
>>>    {
>>>    	struct device *dev = &client->dev;
>>> -	unsigned int status = 0;
>>>    	struct sii902x *sii902x;
>>> -	u8 chipid[4];
>>>    	int ret;
>>>    	ret = i2c_check_functionality(client->adapter,
>>> @@ -989,6 +992,43 @@ static int sii902x_probe(struct i2c_client *client,
>>>    	mutex_init(&sii902x->mutex);
>>> +	sii902x->iovcc = devm_regulator_get(dev, "iovcc");
>>> +	if (IS_ERR(sii902x->iovcc))
>>> +		return PTR_ERR(sii902x->iovcc);
>>> +
>>> +	sii902x->cvcc12 = devm_regulator_get(dev, "cvcc12");
>>> +	if (IS_ERR(sii902x->cvcc12))
>>> +		return PTR_ERR(sii902x->cvcc12);
>>> +
>>> +	ret = regulator_enable(sii902x->iovcc);
>>> +	if (ret < 0) {
>>> +		dev_err_probe(dev, ret, "Failed to enable iovcc supply");
>>> +		return ret;
>>> +	}
>>> +
>>> +	ret = regulator_enable(sii902x->cvcc12);
>>> +	if (ret < 0) {
>>> +		dev_err_probe(dev, ret, "Failed to enable cvcc12 supply");
>>> +		regulator_disable(sii902x->iovcc);
>>> +		return ret;
>>> +	}
>>> +
>>> +	ret = sii902x_init(sii902x);
>>> +	if (ret < 0) {
>>> +		regulator_disable(sii902x->cvcc12);
>>> +		regulator_disable(sii902x->iovcc);
>>> +	}
>>> +
>>> +	return ret;
>>> +}
>>> +
>>> +static int sii902x_init(struct sii902x *sii902x)
>>> +{
>>> +	struct device *dev = &sii902x->i2c->dev;
>>> +	unsigned int status = 0;
>>> +	u8 chipid[4];
>>> +	int ret;
>>> +
>>>    	sii902x_reset(sii902x);
>>>    	ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0);
>>> @@ -1012,11 +1052,11 @@ static int sii902x_probe(struct i2c_client *client,
>>>    	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);
>>>    	regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);
>>> -	if (client->irq > 0) {
>>> +	if (sii902x->i2c->irq > 0) {
>>>    		regmap_write(sii902x->regmap, SII902X_INT_ENABLE,
>>>    			     SII902X_HOTPLUG_EVENT);
>>> -		ret = devm_request_threaded_irq(dev, client->irq, NULL,
>>> +		ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL,
>>>    						sii902x_interrupt,
>>>    						IRQF_ONESHOT, dev_name(dev),
>>>    						sii902x);
>>> @@ -1031,9 +1071,9 @@ static int sii902x_probe(struct i2c_client *client,
>>>    	sii902x_audio_codec_init(sii902x, dev);
>>> -	i2c_set_clientdata(client, sii902x);
>>> +	i2c_set_clientdata(sii902x->i2c, sii902x);
>>> -	sii902x->i2cmux = i2c_mux_alloc(client->adapter, dev,
>>> +	sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev,
>>>    					1, 0, I2C_MUX_GATE,
>>>    					sii902x_i2c_bypass_select,
>>>    					sii902x_i2c_bypass_deselect);
>>> @@ -1051,6 +1091,8 @@ static int sii902x_remove(struct i2c_client *client)
>>>    	i2c_mux_del_adapters(sii902x->i2cmux);
>>>    	drm_bridge_remove(&sii902x->bridge);
>>> +	regulator_disable(sii902x->cvcc12);
>>> +	regulator_disable(sii902x->iovcc);
>>>    	return 0;
>>>    }
>>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel

  reply	other threads:[~2020-10-20 14:01 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-24 20:05 [PATCH " Alexandru Gagniuc
2020-09-24 20:05 ` [PATCH 2/2] dt-bindings: display: sii902x: Add supply bindings Alexandru Gagniuc
2020-09-26 18:42   ` Sam Ravnborg
2020-09-24 20:22 ` [PATCH 1/2] drm/bridge: sii902x: Enable I/O and core VCC supplies if present Fabio Estevam
2020-09-24 20:34   ` Alex G.
2020-09-26 18:49 ` Sam Ravnborg
2020-09-28 17:35   ` Alex G.
2020-09-28 19:03     ` Sam Ravnborg
2020-09-28 17:30 ` [PATCH v2 " Alexandru Gagniuc
2020-09-28 17:30   ` [PATCH v2 2/2] dt-bindings: display: sii902x: Add supply bindings Alexandru Gagniuc
2020-09-29 20:17     ` Rob Herring
2020-10-20  1:24   ` [PATCH v2 1/2] drm/bridge: sii902x: Enable I/O and core VCC supplies if present Alex G.
2020-10-20  7:16     ` Sam Ravnborg
2020-10-20 14:01       ` Alex G. [this message]
2020-10-20 15:08         ` Sam Ravnborg
2020-10-20 22:14   ` [PATCH v3 1/3] drm/bridge: sii902x: Refactor init code into separate function Alexandru Gagniuc
2020-10-20 22:14   ` [PATCH v3 2/3] drm/bridge: sii902x: Enable I/O and core VCC supplies if present Alexandru Gagniuc
2020-11-08 10:55     ` Sam Ravnborg
2020-10-20 22:14   ` [PATCH v3 3/3] dt-bindings: display: sii902x: Add supply bindings Alexandru Gagniuc

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