AcoSail/kernel_optimize_test
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Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c fixes from Wolfram Sang:
 "Two I2C driver bugfixes.

  The 'VLLS mode support' patch should have been entitled 'reconfigure
  pinctrl after suspend' to make the bugfix more clear. Sorry, I missed
  that, yet didn't want to rebase"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx-lpi2c: add VLLS mode support
  i2c: i2c-cadence: Initialize configuration before probing devices
This commit is contained in:
Linus Torvalds 2017-01-28 15:09:23 -08:00
commit 53cd1ad1a6
2 changed files with 24 additions and 4 deletions
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8
drivers/i2c/busses/i2c-cadence.c
View File

@ -962,10 +962,6 @@ static int cdns_i2c_probe(struct platform_device *pdev)
goto err_clk_dis;
}
ret = i2c_add_adapter(&id->adap);
if (ret < 0)
goto err_clk_dis;
/*
* Cadence I2C controller has a bug wherein it generates
* invalid read transaction after HW timeout in master receiver mode.
@ -975,6 +971,10 @@ static int cdns_i2c_probe(struct platform_device *pdev)
*/
cdns_i2c_writereg(CDNS_I2C_TIMEOUT_MAX, CDNS_I2C_TIME_OUT_OFFSET);
ret = i2c_add_adapter(&id->adap);
if (ret < 0)
goto err_clk_dis;
dev_info(&pdev->dev, "%u kHz mmio %08lx irq %d\n",
id->i2c_clk / 1000, (unsigned long)r_mem->start, id->irq);

20
drivers/i2c/busses/i2c-imx-lpi2c.c
View File

@ -28,6 +28,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/slab.h>
@ -636,12 +637,31 @@ static int lpi2c_imx_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int lpi2c_imx_suspend(struct device *dev)
{
pinctrl_pm_select_sleep_state(dev);
return 0;
}
static int lpi2c_imx_resume(struct device *dev)
{
pinctrl_pm_select_default_state(dev);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(imx_lpi2c_pm, lpi2c_imx_suspend, lpi2c_imx_resume);
static struct platform_driver lpi2c_imx_driver = {
.probe = lpi2c_imx_probe,
.remove = lpi2c_imx_remove,
.driver = {
.name = DRIVER_NAME,
.of_match_table = lpi2c_imx_of_match,
.pm = &imx_lpi2c_pm,
},
};