summaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 18:48:03 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 18:48:03 (GMT)
commit3dbde57ad941c55345fd7fac0ee3f70f204b02d8 (patch)
tree237c6de64d05da3f61b9ac1724e37a5c1f014b71 /drivers/i2c
parenta6e6d863cf68bba886acfe47dbdc8f245cce588f (diff)
parent2207a4e1ca6a1bb126360b6d0c236af6664532f2 (diff)
downloadlinux-3dbde57ad941c55345fd7fac0ee3f70f204b02d8.tar.xz
Merge tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control changes from Linus Walleij: - A large slew of improvements of the Genric pin configuration support, and deployment in four different platforms: Rockchip, Super-H PFC, ABx500 and TZ1090. Support BIAS_BUS_HOLD, get device tree parsing and debugfs support into shape. - We also have device tree support with generic naming conventions for the generic pin configuration. - Delete the unused and confusing direct pinconf API. Now state transitions is *the* way to control pins and multiplexing. - New drivers for Rockchip, TZ1090, and TZ1090 PDC. - Two pin control states related to power management are now handled in the device core: "sleep" and "idle", removing a lot of boilerplate code in drivers. We do not yet know if this is the final word for pin PM, but it already make things a lot easier to handle. - Handle sparse GPIO ranges passing a list of disparate pins, and utilize these in the new BayTrail (x86 Atom SoC) driver. - Make the sunxi (AllWinner) driver handle external interrupts. - Make it possible for pinctrl-single to handle the case where several pins are managed by a single register, and augment it to handle sleep modes. - Cleanups and improvements for the abx500 drivers. - Move Sirf pin control drivers to their own directory, support save/restore of context and add support for the SiRFatlas6 SoC. - PMU muxing for the Dove pinctrl driver. - Finalization and support for VF610 in the i.MX6 pinctrl driver. - Smoothen out various Exynos rough edges. - Generic cleanups of various kinds. * tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (82 commits) pinctrl: vt8500: wmt: remove redundant dev_err call in wmt_pinctrl_probe() pinctrl: remove bindings for pinconf options needing more thought pinctrl: remove slew-rate parameter from tz1090 pinctrl: set unit for debounce time pinconfig to usec pinctrl: more clarifications for generic pull configs pinctrl: rip out the direct pinconf API pinctrl-tz1090-pdc: add TZ1090 PDC pinctrl driver pinctrl-tz1090: add TZ1090 pinctrl driver pinctrl: samsung: Staticize drvdata_list pinctrl: rockchip: Add missing irq_gc_unlock() call before return error pinctrl: abx500: rework error path pinctrl: abx500: suppress hardcoded value pinctrl: abx500: factorize code pinctrl: abx500: fix abx500_gpio_get() pinctrl: abx500: fix abx500_pin_config_set() pinctrl: abx500: Add device tree support sh-pfc: Guard DT parsing with #ifdef CONFIG_OF pinctrl: add Intel BayTrail GPIO/pinctrl support pinctrl: fix pinconf_ops::pin_config_dbg_parse_modify kerneldoc pinctrl: Staticize local symbols ... Conflicts: drivers/net/ethernet/ti/davinci_mdio.c drivers/pinctrl/Makefile
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-nomadik.c90
1 files changed, 10 insertions, 80 deletions
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 650293f..c7e3b0c 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -148,10 +148,6 @@ struct i2c_nmk_client {
* @stop: stop condition.
* @xfer_complete: acknowledge completion for a I2C message.
* @result: controller propogated result.
- * @pinctrl: pinctrl handle.
- * @pins_default: default state for the pins.
- * @pins_idle: idle state for the pins.
- * @pins_sleep: sleep state for the pins.
* @busy: Busy doing transfer.
*/
struct nmk_i2c_dev {
@@ -165,11 +161,6 @@ struct nmk_i2c_dev {
int stop;
struct completion xfer_complete;
int result;
- /* Three pin states - default, idle & sleep */
- struct pinctrl *pinctrl;
- struct pinctrl_state *pins_default;
- struct pinctrl_state *pins_idle;
- struct pinctrl_state *pins_sleep;
bool busy;
};
@@ -645,13 +636,7 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap,
}
/* Optionaly enable pins to be muxed in and configured */
- if (!IS_ERR(dev->pins_default)) {
- status = pinctrl_select_state(dev->pinctrl,
- dev->pins_default);
- if (status)
- dev_err(&dev->adev->dev,
- "could not set default pins\n");
- }
+ pinctrl_pm_select_default_state(&dev->adev->dev);
status = init_hw(dev);
if (status)
@@ -681,13 +666,7 @@ out:
clk_disable_unprepare(dev->clk);
out_clk:
/* Optionally let pins go into idle state */
- if (!IS_ERR(dev->pins_idle)) {
- status = pinctrl_select_state(dev->pinctrl,
- dev->pins_idle);
- if (status)
- dev_err(&dev->adev->dev,
- "could not set pins to idle state\n");
- }
+ pinctrl_pm_select_idle_state(&dev->adev->dev);
pm_runtime_put_sync(&dev->adev->dev);
@@ -882,41 +861,22 @@ static int nmk_i2c_suspend(struct device *dev)
{
struct amba_device *adev = to_amba_device(dev);
struct nmk_i2c_dev *nmk_i2c = amba_get_drvdata(adev);
- int ret;
if (nmk_i2c->busy)
return -EBUSY;
- if (!IS_ERR(nmk_i2c->pins_sleep)) {
- ret = pinctrl_select_state(nmk_i2c->pinctrl,
- nmk_i2c->pins_sleep);
- if (ret)
- dev_err(dev, "could not set pins to sleep state\n");
- }
+ pinctrl_pm_select_sleep_state(dev);
return 0;
}
static int nmk_i2c_resume(struct device *dev)
{
- struct amba_device *adev = to_amba_device(dev);
- struct nmk_i2c_dev *nmk_i2c = amba_get_drvdata(adev);
- int ret;
-
/* First go to the default state */
- if (!IS_ERR(nmk_i2c->pins_default)) {
- ret = pinctrl_select_state(nmk_i2c->pinctrl,
- nmk_i2c->pins_default);
- if (ret)
- dev_err(dev, "could not set pins to default state\n");
- }
+ pinctrl_pm_select_default_state(dev);
/* Then let's idle the pins until the next transfer happens */
- if (!IS_ERR(nmk_i2c->pins_idle)) {
- ret = pinctrl_select_state(nmk_i2c->pinctrl,
- nmk_i2c->pins_idle);
- if (ret)
- dev_err(dev, "could not set pins to idle state\n");
- }
+ pinctrl_pm_select_idle_state(dev);
+
return 0;
}
#else
@@ -1004,39 +964,10 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
dev->adev = adev;
amba_set_drvdata(adev, dev);
- dev->pinctrl = devm_pinctrl_get(&adev->dev);
- if (IS_ERR(dev->pinctrl)) {
- ret = PTR_ERR(dev->pinctrl);
- goto err_pinctrl;
- }
-
- dev->pins_default = pinctrl_lookup_state(dev->pinctrl,
- PINCTRL_STATE_DEFAULT);
- if (IS_ERR(dev->pins_default)) {
- dev_err(&adev->dev, "could not get default pinstate\n");
- } else {
- ret = pinctrl_select_state(dev->pinctrl,
- dev->pins_default);
- if (ret)
- dev_dbg(&adev->dev, "could not set default pinstate\n");
- }
-
- dev->pins_idle = pinctrl_lookup_state(dev->pinctrl,
- PINCTRL_STATE_IDLE);
- if (IS_ERR(dev->pins_idle)) {
- dev_dbg(&adev->dev, "could not get idle pinstate\n");
- } else {
- /* If possible, let's go to idle until the first transfer */
- ret = pinctrl_select_state(dev->pinctrl,
- dev->pins_idle);
- if (ret)
- dev_dbg(&adev->dev, "could not set idle pinstate\n");
- }
-
- dev->pins_sleep = pinctrl_lookup_state(dev->pinctrl,
- PINCTRL_STATE_SLEEP);
- if (IS_ERR(dev->pins_sleep))
- dev_dbg(&adev->dev, "could not get sleep pinstate\n");
+ /* Select default pin state */
+ pinctrl_pm_select_default_state(&adev->dev);
+ /* If possible, let's go to idle until the first transfer */
+ pinctrl_pm_select_idle_state(&adev->dev);
dev->virtbase = ioremap(adev->res.start, resource_size(&adev->res));
if (!dev->virtbase) {
@@ -1106,7 +1037,6 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
iounmap(dev->virtbase);
err_no_ioremap:
kfree(dev);
- err_pinctrl:
err_no_mem:
return ret;