From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-i2c@vger.kernel.org, Wolfram Sang <wsa@the-dreams.de>,
ben-linux@fluff.org, Jean Delvare <khali@linux-fr.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Christian Ruppert <christian.ruppert@abilis.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: [PATCH 4/7] i2c-designware: use dynamic adapter numbering on Lynxpoint
Date: Thu, 21 Mar 2013 14:09:57 +0200 [thread overview]
Message-ID: <1363867800-23861-4-git-send-email-mika.westerberg@linux.intel.com> (raw)
In-Reply-To: <1363867800-23861-1-git-send-email-mika.westerberg@linux.intel.com>
It is not good idea to mix static and dynamic I2C adapter numbering. In
this particular case on Lynxpoint we had graphics I2C adapter which took
the first numbers preventing the designware I2C driver from using the
adapter numbers it preferred.
Fix this by switching to use dynamic adapter numbering on Intel Lynxpoint.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/i2c/busses/i2c-designware-platdrv.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index c19c4ce..a22a852 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -56,20 +56,11 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
static int dw_i2c_acpi_configure(struct platform_device *pdev)
{
struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
- struct acpi_device *adev;
- int busno, ret;
if (!ACPI_HANDLE(&pdev->dev))
return -ENODEV;
- ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
- if (ret)
- return -ENODEV;
-
dev->adapter.nr = -1;
- if (adev->pnp.unique_id && !kstrtoint(adev->pnp.unique_id, 0, &busno))
- dev->adapter.nr = busno;
-
dev->tx_fifo_depth = 32;
dev->rx_fifo_depth = 32;
return 0;
--
1.7.10.4
next prev parent reply other threads:[~2013-03-21 12:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-21 12:09 [PATCH 1/7] i2c-designware: move to managed functions (devm_*) Mika Westerberg
2013-03-21 12:09 ` [PATCH 3/7] i2c-designware-pci: use managed functions pcim_* and devm_* Mika Westerberg
[not found] ` <1363867800-23861-3-git-send-email-mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2013-04-09 9:03 ` [3/7] " Wolfram Sang
2013-03-21 12:09 ` Mika Westerberg [this message]
[not found] ` <1363867800-23861-4-git-send-email-mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2013-04-09 9:06 ` [4/7] i2c-designware: use dynamic adapter numbering on Lynxpoint Wolfram Sang
2013-04-09 9:23 ` Mika Westerberg
2013-04-09 9:29 ` Wolfram Sang
[not found] ` <20130409092923.GF3624-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
2013-04-09 9:37 ` Mika Westerberg
2013-03-21 12:09 ` [PATCH 5/7] i2c-designware: enable/disable the controller properly Mika Westerberg
2013-04-09 9:09 ` [5/7] " Wolfram Sang
2013-04-09 9:28 ` Mika Westerberg
2013-04-09 9:28 ` Wolfram Sang
[not found] ` <20130409092857.GE3624-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
2013-04-09 9:39 ` Mika Westerberg
2013-03-21 12:09 ` [PATCH 6/7] i2c-designware: use usleep_range() in the busy-loop Mika Westerberg
2013-03-21 12:10 ` [PATCH 7/7] i2c-designware: switch to use runtime PM autosuspend Mika Westerberg
[not found] ` <1363867800-23861-1-git-send-email-mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2013-03-21 12:09 ` [PATCH 2/7] i2c-designware-pci: use dev_err() instead of printk() Mika Westerberg
2013-04-08 11:04 ` [PATCH 1/7] i2c-designware: move to managed functions (devm_*) Mika Westerberg
2013-04-09 9:00 ` [1/7] " Wolfram Sang
2013-04-09 9:22 ` Mika Westerberg
2013-04-09 9:20 ` Wolfram Sang
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