--- /dev/null
+From 6ebeb345720380a639279d7ac68ef47c07bb79ea Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Wed, 13 Sep 2023 09:04:29 +0300
+Subject: phy: mapphone-mdm6600: Fix pinctrl_pm handling for sleep pins
+
+From: Tony Lindgren <tony@atomide.com>
+
+[ Upstream commit 3b384cc74b00b5ac21d18e4c1efc3c1da5300971 ]
+
+Looks like the driver sleep pins configuration is unusable. Adding the
+sleep pins causes the usb phy to not respond. We need to use the default
+pins in probe, and only set sleep pins at phy_mdm6600_device_power_off().
+
+As the modem can also be booted to a serial port mode for firmware
+flashing, let's make the pin changes limited to probe and remove. For
+probe, we get the default pins automatically. We only need to set the
+sleep pins in phy_mdm6600_device_power_off() to prevent the modem from
+waking up because the gpio line glitches.
+
+If it turns out that we need a separate state for phy_mdm6600_power_on()
+and phy_mdm6600_power_off(), we can use the pinctrl idle state.
+
+Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
+Cc: Merlijn Wajer <merlijn@wizzup.org>
+Cc: Pavel Machek <pavel@ucw.cz>
+Cc: Sebastian Reichel <sre@kernel.org>
+Fixes: 2ad2af081622 ("phy: mapphone-mdm6600: Improve phy related runtime PM calls")
+Signed-off-by: Tony Lindgren <tony@atomide.com>
+Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
+Link: https://lore.kernel.org/r/20230913060433.48373-3-tony@atomide.com
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/phy/motorola/phy-mapphone-mdm6600.c | 29 +++++++++------------
+ 1 file changed, 12 insertions(+), 17 deletions(-)
+
+diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+index c3e2ab6a2a717..67802f9e40ba0 100644
+--- a/drivers/phy/motorola/phy-mapphone-mdm6600.c
++++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+@@ -122,16 +122,10 @@ static int phy_mdm6600_power_on(struct phy *x)
+ {
+ struct phy_mdm6600 *ddata = phy_get_drvdata(x);
+ struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE];
+- int error;
+
+ if (!ddata->enabled)
+ return -ENODEV;
+
+- error = pinctrl_pm_select_default_state(ddata->dev);
+- if (error)
+- dev_warn(ddata->dev, "%s: error with default_state: %i\n",
+- __func__, error);
+-
+ gpiod_set_value_cansleep(enable_gpio, 1);
+
+ /* Allow aggressive PM for USB, it's only needed for n_gsm port */
+@@ -160,11 +154,6 @@ static int phy_mdm6600_power_off(struct phy *x)
+
+ gpiod_set_value_cansleep(enable_gpio, 0);
+
+- error = pinctrl_pm_select_sleep_state(ddata->dev);
+- if (error)
+- dev_warn(ddata->dev, "%s: error with sleep_state: %i\n",
+- __func__, error);
+-
+ return 0;
+ }
+
+@@ -456,6 +445,7 @@ static void phy_mdm6600_device_power_off(struct phy_mdm6600 *ddata)
+ {
+ struct gpio_desc *reset_gpio =
+ ddata->ctrl_gpios[PHY_MDM6600_RESET];
++ int error;
+
+ ddata->enabled = false;
+ phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_BP_SHUTDOWN_REQ);
+@@ -471,6 +461,17 @@ static void phy_mdm6600_device_power_off(struct phy_mdm6600 *ddata)
+ } else {
+ dev_err(ddata->dev, "Timed out powering down\n");
+ }
++
++ /*
++ * Keep reset gpio high with padconf internal pull-up resistor to
++ * prevent modem from waking up during deeper SoC idle states. The
++ * gpio bank lines can have glitches if not in the always-on wkup
++ * domain.
++ */
++ error = pinctrl_pm_select_sleep_state(ddata->dev);
++ if (error)
++ dev_warn(ddata->dev, "%s: error with sleep_state: %i\n",
++ __func__, error);
+ }
+
+ static void phy_mdm6600_deferred_power_on(struct work_struct *work)
+@@ -571,12 +572,6 @@ static int phy_mdm6600_probe(struct platform_device *pdev)
+ ddata->dev = &pdev->dev;
+ platform_set_drvdata(pdev, ddata);
+
+- /* Active state selected in phy_mdm6600_power_on() */
+- error = pinctrl_pm_select_sleep_state(ddata->dev);
+- if (error)
+- dev_warn(ddata->dev, "%s: error with sleep_state: %i\n",
+- __func__, error);
+-
+ error = phy_mdm6600_init_lines(ddata);
+ if (error)
+ return error;
+--
+2.42.0
+
--- /dev/null
+From 41878e7b303e2dc714e8dd0cf8524cacc24898fa Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Wed, 13 Sep 2023 09:04:27 +0300
+Subject: phy: mapphone-mdm6600: Fix runtime disable on probe
+
+From: Tony Lindgren <tony@atomide.com>
+
+[ Upstream commit 719606154c7033c068a5d4c1dc5f9163b814b3c8 ]
+
+Commit d644e0d79829 ("phy: mapphone-mdm6600: Fix PM error handling in
+phy_mdm6600_probe") caused a regression where we now unconditionally
+disable runtime PM at the end of the probe while it is only needed on
+errors.
+
+Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
+Cc: Merlijn Wajer <merlijn@wizzup.org>
+Cc: Miaoqian Lin <linmq006@gmail.com>
+Cc: Pavel Machek <pavel@ucw.cz>
+Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
+Fixes: d644e0d79829 ("phy: mapphone-mdm6600: Fix PM error handling in phy_mdm6600_probe")
+Signed-off-by: Tony Lindgren <tony@atomide.com>
+Link: https://lore.kernel.org/r/20230913060433.48373-1-tony@atomide.com
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/phy/motorola/phy-mapphone-mdm6600.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+index 3cd4d51c247c3..436b5ab6dc6d5 100644
+--- a/drivers/phy/motorola/phy-mapphone-mdm6600.c
++++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+@@ -627,10 +627,12 @@ static int phy_mdm6600_probe(struct platform_device *pdev)
+ pm_runtime_put_autosuspend(ddata->dev);
+
+ cleanup:
+- if (error < 0)
++ if (error < 0) {
+ phy_mdm6600_device_power_off(ddata);
+- pm_runtime_disable(ddata->dev);
+- pm_runtime_dont_use_autosuspend(ddata->dev);
++ pm_runtime_disable(ddata->dev);
++ pm_runtime_dont_use_autosuspend(ddata->dev);
++ }
++
+ return error;
+ }
+
+--
+2.42.0
+
--- /dev/null
+From 763bedfbef41e00439eb3c952d12f4fd12b28315 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Wed, 13 Sep 2023 09:04:28 +0300
+Subject: phy: mapphone-mdm6600: Fix runtime PM for remove
+
+From: Tony Lindgren <tony@atomide.com>
+
+[ Upstream commit b99e0ba9633af51638e5ee1668da2e33620c134f ]
+
+Otherwise we will get an underflow on remove.
+
+Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
+Cc: Merlijn Wajer <merlijn@wizzup.org>
+Cc: Pavel Machek <pavel@ucw.cz>
+Cc: Sebastian Reichel <sre@kernel.org>
+Fixes: f7f50b2a7b05 ("phy: mapphone-mdm6600: Add runtime PM support for n_gsm on USB suspend")
+Signed-off-by: Tony Lindgren <tony@atomide.com>
+Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
+Link: https://lore.kernel.org/r/20230913060433.48373-2-tony@atomide.com
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/phy/motorola/phy-mapphone-mdm6600.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+index 436b5ab6dc6d5..c3e2ab6a2a717 100644
+--- a/drivers/phy/motorola/phy-mapphone-mdm6600.c
++++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c
+@@ -641,6 +641,7 @@ static int phy_mdm6600_remove(struct platform_device *pdev)
+ struct phy_mdm6600 *ddata = platform_get_drvdata(pdev);
+ struct gpio_desc *reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET];
+
++ pm_runtime_get_noresume(ddata->dev);
+ pm_runtime_dont_use_autosuspend(ddata->dev);
+ pm_runtime_put_sync(ddata->dev);
+ pm_runtime_disable(ddata->dev);
+--
+2.42.0
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
