linux.git/drivers/pinctrl/mediatek, branch v5.13.1

pinctrl: mediatek: use spin lock in mtk_rmw

2021-04-21T23:53:29+00:00

Commit 42a46434e9b1 ("pinctrl: add lock in mtk_rmw function.") uses
mutex lock in mtk_rmw.  However the function is possible called from
atomic context.

For example call trace:
  mutex_lock+0x28/0x64
  mtk_rmw+0x38/0x80
  [snip]
  max98357a_daiops_trigger+0x8c/0x9c
  soc_pcm_trigger+0x5c/0x10c

The max98357a_daiops_trigger() could run in either atomic or non-atomic
context.  As a result, dmesg shows some similar messages: "BUG: sleeping
function called from invalid context at kernel/locking/mutex.c:254".

Uses spin lock in mtk_rmw instead.

Fixes: 42a46434e9b1 ("pinctrl: add lock in mtk_rmw function.")
Signed-off-by: Tzung-Bi Shih 
Link: https://lore.kernel.org/r/20210419093449.3125704-1-tzungbi@google.com
Signed-off-by: Linus Walleij

pinctrl: add drive for I2C related pins on MT8195

2021-04-21T23:53:02+00:00

This patch provides the advanced drive raw data setting version
for I2C used pins on MT8195.

Signed-off-by: Zhiyong Tao 
Acked-by: Sean Wang 
Link: https://lore.kernel.org/r/20210413055702.27535-4-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij

pinctrl: add pinctrl driver on mt8195

2021-04-21T23:53:02+00:00

This commit includes pinctrl driver for mt8195.

Signed-off-by: Zhiyong Tao 
Acked-by: Sean Wang 
Link: https://lore.kernel.org/r/20210413055702.27535-3-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij

pinctrl: add lock in mtk_rmw function.

2021-03-25T09:14:50+00:00

When multiple threads operate on the same register resource
which include multiple pin, It will make the register resource
wrong to control. So we add lock to avoid the case.

Signed-off-by: Zhiyong Tao 
Link: https://lore.kernel.org/r/20210321033150.15380-2-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij

Merge tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2021-02-23T02:39:11+00:00

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v5.12 kernel.

  This time a calm set with no core changes.

  New drivers/subdrivers:

   - Renesas R8A7790A0 pin controller.

   - Allwinner H616 and H616-R pin controllers.

   - Qualcomm SM8350 and SC8180x pin controllers.

  Improvements:

   - Redo the DT bindings for Ralink RT2880.

   - A common Qualcomm TLMM DT binding in YAML.

   - Delete the unused drivers for U300, COH901, Sirf Atlas, and ZTE ZX"

* tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (71 commits)
  pinctrl: mediatek: Fix trigger type setting follow for unexpected interrupt
  dt-bindings: pinctrl: Group tuples in pin control properties
  pinctrl: nuvoton: npcm7xx: Fix alignment of table header comment
  pinctrl: at91-pio4: fix "Prefer 'unsigned int' to bare use of 'unsigned'"
  pinctrl: at91-pio4: add support for slew-rate
  dt-bindings: pinctrl: at91-pio4: add slew-rate
  pinctrl: actions: Add depends on || COMPILE_TEST
  pinctrl: single: set function name when adding function
  pinctrl: qcom: Add sc8180x TLMM driver
  dt-bindings: pinctrl: qcom: Add sc8180x binding
  dt-bindings: pinctrl: qcom: Define common TLMM binding
  pinctrl: qcom: Add SM8350 pinctrl driver
  dt-bindings: pinctrl: qcom: Add SM8350 pinctrl bindings
  pinctrl: samsung: use raw_spinlock for s3c64xx
  dt-bindings: mediatek: mt8192: Fix dt_binding_check warning
  pinctrl: qcom: spmi-mpp: Add PM8019 compatible
  pinctrl: pinmux: add function selector to pinmux-functions
  pinctrl: samsung: use raw_spinlock for locking
  pinctrl: clarify #pinctrl-cells for pinctrl-single,pins
  pinctrl: actions: Add the platform dependency to drivers
  ...

pinctrl: mediatek: Fix trigger type setting follow for unexpected interrupt

2021-02-15T04:52:01+00:00

When flipping the polarity will be generated interrupt under certain
circumstances, but GPIO external signal has not changed.
Then, mask the interrupt before polarity setting, and clear the
unexpected interrupt after trigger type setting completed.

Remove mtk_eint_flip_edge: because mtk_eint_unmask already calls it.

Signed-off-by: Hailong Fan 
Reviewed-by: Nicolas Boichat 
Link: https://lore.kernel.org/r/20210125041753.2214-1-hailong.fan@mediatek.com
Signed-off-by: Linus Walleij

pinctrl: mediatek: Fix fallback call path

2021-01-05T23:20:31+00:00

Some SoCs, eg. mt8183, are using a pinconfig operation bias_set_combo.
The fallback path in mtk_pinconf_adv_pull_set() should also try this
operation.

Fixes: cafe19db7751 ("pinctrl: mediatek: Backward compatible to previous Mediatek's bias-pull usage")
Signed-off-by: Hsin-Yi Wang 
Acked-by: Sean Wang 
Link: https://lore.kernel.org/r/20201228090425.2130569-1-hsinyi@chromium.org
Signed-off-by: Linus Walleij

pinctrl: mediatek: moore: convert comma to semicolon

2021-01-04T14:30:26+00:00

Replace a comma between expression statements by a semicolon.

Signed-off-by: Zheng Yongjun 
Link: https://lore.kernel.org/r/20201211084801.2425-1-zhengyongjun3@huawei.com
Signed-off-by: Linus Walleij

pinctrl: mediatek: paris: convert comma to semicolon

2021-01-04T14:29:19+00:00

Replace a comma between expression statements by a semicolon.

Signed-off-by: Zheng Yongjun 
Link: https://lore.kernel.org/r/20201211084717.2371-1-zhengyongjun3@huawei.com
Signed-off-by: Linus Walleij

pinctrl: mediatek: simplify the return expression of mtk_pinconf_bias_disable_set_rev1()

2020-12-12T00:39:38+00:00

Simplify the return expression.

Signed-off-by: Zheng Yongjun 
Link: https://lore.kernel.org/r/20201210135902.1548-1-zhengyongjun3@huawei.com
Signed-off-by: Linus Walleij