openwrt/target/linux/layerscape/patches-5.4/808-i2c-0003-MLK-11403-I2C-imx-restore-pin-setting-for-i2c.patch
John Audia a47279154e kernel: bump 5.4 to 5.4.75
Manually rebased patches:
  bcm27xx:
    patches-5.4/950-0267-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch
  bcm53xx:
    patches-5.4/180-usb-xhci-add-support-for-performing-fake-doorbell.patch
  layerscape:
    patches-5.4/802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
    patches-5.4/808-i2c-0002-MLK-10893-i2c-imx-add-irqf_no_suspend.patch
    patches-5.4/820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch

Removed since could be reverse-applied by quilt:
  mediatek:
    patches-5.4/0700-arm-dts-mt7623-add-missing-pause-for-switchport.patch

All modifications made by update_kernel.sh

Build system: x86_64
Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711, x86_64
Run-tested: ipq806x/R7800, x86_64

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Curtis Deptuck <curtdept@me.com> [x86_64]

Rebase of 802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
2020-11-10 13:11:32 +01:00

58 lines
1.6 KiB
Diff

From b862ceba838786ac81aa6a295ad91a54aff6909d Mon Sep 17 00:00:00 2001
From: Gao Pan <b54642@freescale.com>
Date: Tue, 25 Aug 2015 14:00:32 +0800
Subject: [PATCH] MLK-11403: I2C: imx: restore pin setting for i2c
restore pin setting for i2c in suspend/resume
Signed-off-by: Gao Pan <gaopan@freescale.com>
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
(cherry picked from commit 42b5aa1d72c09015d435459c6a59022255e3ef21)
---
drivers/i2c/busses/i2c-imx.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1229,7 +1229,8 @@ static int __maybe_unused i2c_imx_runtim
{
struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
- clk_disable(i2c_imx->clk);
+ clk_disable_unprepare(i2c_imx->clk);
+ pinctrl_pm_select_sleep_state(dev);
return 0;
}
@@ -1239,14 +1240,28 @@ static int __maybe_unused i2c_imx_runtim
struct imx_i2c_struct *i2c_imx = dev_get_drvdata(dev);
int ret;
- ret = clk_enable(i2c_imx->clk);
+ pinctrl_pm_select_default_state(dev);
+ ret = clk_prepare_enable(i2c_imx->clk);
if (ret)
dev_err(dev, "can't enable I2C clock, ret=%d\n", ret);
return ret;
}
+static int i2c_imx_suspend(struct device *dev)
+{
+ pinctrl_pm_select_sleep_state(dev);
+ return 0;
+}
+
+static int i2c_imx_resume(struct device *dev)
+{
+ pinctrl_pm_select_default_state(dev);
+ return 0;
+}
+
static const struct dev_pm_ops i2c_imx_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(i2c_imx_suspend, i2c_imx_resume)
SET_RUNTIME_PM_OPS(i2c_imx_runtime_suspend,
i2c_imx_runtime_resume, NULL)
};