From: Antti Palosaari <crope@iki.fi>
To: Matthias Schwarzott <zzam@gentoo.org>,
linux-media@vger.kernel.org, mchehab@osg.samsung.com
Subject: Re: [PATCH 12/12] cx231xx: scan all four existing i2c busses instead of the 3 masters
Date: Thu, 25 Sep 2014 18:30:45 +0300 [thread overview]
Message-ID: <54243525.1030704@iki.fi> (raw)
In-Reply-To: <1411621684-8295-12-git-send-email-zzam@gentoo.org>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Here is example naming those muxed adapters differently (as I mentioned
earlier patch), would make clear people who reads that code which
adapters are real and which are muxed. Now you do i2c scan for adapter
0, 1, 2, 3, without knowing 1 and 3 are actually mux segments on
physical adapter 1.
regards
Antti
On 09/25/2014 08:08 AM, Matthias Schwarzott wrote:
> Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
> ---
> drivers/media/usb/cx231xx/cx231xx-core.c | 6 ++++++
> drivers/media/usb/cx231xx/cx231xx-i2c.c | 8 ++++----
> 2 files changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c
> index c49022f..f6b6d26 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-core.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-core.c
> @@ -1303,6 +1303,12 @@ int cx231xx_dev_init(struct cx231xx *dev)
> cx231xx_i2c_mux_register(dev, 0);
> cx231xx_i2c_mux_register(dev, 1);
>
> + /* scan the real bus segments */
> + cx231xx_do_i2c_scan(dev, I2C_0);
> + cx231xx_do_i2c_scan(dev, I2C_1);
> + cx231xx_do_i2c_scan(dev, I2C_2);
> + cx231xx_do_i2c_scan(dev, I2C_3);
> +
> /* init hardware */
> /* Note : with out calling set power mode function,
> afe can not be set up correctly */
> diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c b/drivers/media/usb/cx231xx/cx231xx-i2c.c
> index 848aec2..13c476c 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-i2c.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-i2c.c
> @@ -492,6 +492,9 @@ void cx231xx_do_i2c_scan(struct cx231xx *dev, int i2c_port)
> int i, rc;
> struct i2c_client client;
>
> + if (!i2c_scan)
> + return;
> +
> memset(&client, 0, sizeof(client));
> client.adapter = cx231xx_get_i2c_adap(dev, i2c_port);
>
> @@ -533,10 +536,7 @@ int cx231xx_i2c_register(struct cx231xx_i2c *bus)
> i2c_set_adapdata(&bus->i2c_adap, &dev->v4l2_dev);
> i2c_add_adapter(&bus->i2c_adap);
>
> - if (0 == bus->i2c_rc) {
> - if (i2c_scan)
> - cx231xx_do_i2c_scan(dev, bus->nr);
> - } else
> + if (0 != bus->i2c_rc)
> cx231xx_warn("%s: i2c bus %d register FAILED\n",
> dev->name, bus->nr);
>
>
--
http://palosaari.fi/
next prev parent reply other threads:[~2014-09-25 15:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 5:07 [PATCH 01/12] cx231xx: let i2c bus scanning use its own i2c_client Matthias Schwarzott
2014-09-25 5:07 ` [PATCH 02/12] cx231xx: use own i2c_client for eeprom access Matthias Schwarzott
2014-09-25 14:58 ` Antti Palosaari
2014-09-26 4:30 ` Matthias Schwarzott
2014-09-26 12:31 ` Antti Palosaari
2014-09-26 13:00 ` Antti Palosaari
2014-09-25 5:07 ` [PATCH 03/12] cx231xx: delete i2c_client per bus Matthias Schwarzott
2014-09-25 15:00 ` Antti Palosaari
2014-09-25 5:07 ` [PATCH 04/12] cx231xx: give each master i2c bus a seperate name Matthias Schwarzott
2014-09-25 15:04 ` Antti Palosaari
2014-09-26 4:34 ` Matthias Schwarzott
2014-09-26 12:32 ` Antti Palosaari
2014-09-25 5:07 ` [PATCH 05/12] cx231xx: Use symbolic constants for i2c ports Matthias Schwarzott
2014-09-25 15:06 ` Antti Palosaari
2014-09-25 5:07 ` [PATCH 06/12] cx231xx: add wrapper to get the i2c_adapter pointer Matthias Schwarzott
2014-09-25 15:13 ` Antti Palosaari
2014-09-25 5:07 ` [PATCH 07/12] cx231xx: remember status of port_3 switch Matthias Schwarzott
2014-09-25 5:08 ` [PATCH 08/12] cx231xx: let is_tuner check the real i2c port and not the i2c master number Matthias Schwarzott
2014-09-25 5:08 ` [PATCH 09/12] cx231xx: change usage of I2C_1 to the real i2c port Matthias Schwarzott
2014-09-25 5:08 ` [PATCH 10/12] cx231xx: register i2c mux adapters for master1 and use as I2C_1 and I2C_3 Matthias Schwarzott
2014-09-25 15:25 ` Antti Palosaari
2014-09-25 5:08 ` [PATCH 11/12] cx231xx: drop unconditional port3 switching Matthias Schwarzott
2014-09-25 15:26 ` Antti Palosaari
2014-09-25 5:08 ` [PATCH 12/12] cx231xx: scan all four existing i2c busses instead of the 3 masters Matthias Schwarzott
2014-09-25 15:30 ` Antti Palosaari [this message]
2014-09-25 14:50 ` [PATCH 01/12] cx231xx: let i2c bus scanning use its own i2c_client Antti Palosaari
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