diff mbox series

[3/8] gpiolib: acpi: Add wake_capable parameter to acpi_dev_gpio_irq_get_by

Message ID 20220830171332.3.I4ff95ba7e884a486d7814ee888bf864be2ebdef4@changeid
State New
Headers show
Series acpi: i2c: Use SharedAndWake and ExclusiveAndWake to enable wake irq | expand

Commit Message

Raul Rangel Aug. 30, 2022, 11:15 p.m. UTC 
The ACPI spec defines the SharedAndWake and ExclusiveAndWake share type
keywords. This is an indication that the GPIO IRQ can also be used as a
wake source. This change exposes the wake_capable bit so drivers can
correctly enable wake functionality instead of making an assumption.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
---

 drivers/gpio/gpio-pca953x.c |  3 ++-
 drivers/gpio/gpiolib-acpi.c | 11 ++++++++++-
 drivers/gpio/gpiolib-acpi.h |  2 ++
 include/linux/acpi.h        | 14 +++++++++++---
 4 files changed, 25 insertions(+), 5 deletions(-)

Comments

kernel test robot Aug. 31, 2022, 4:58 a.m. UTC | #1 
Hi Raul,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on hid/for-next]
[also build test ERROR on brgl/gpio/for-next rafael-pm/linux-next linus/master v6.0-rc3 next-20220830]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Raul-E-Rangel/acpi-i2c-Use-SharedAndWake-and-ExclusiveAndWake-to-enable-wake-irq/20220831-071916
base:   https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-next
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20220831/202208311235.pxWOoHPE-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/131a07025a591f4ca6d7540f1055bc03f8cf64af
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Raul-E-Rangel/acpi-i2c-Use-SharedAndWake-and-ExclusiveAndWake-to-enable-wake-irq/20220831-071916
        git checkout 131a07025a591f4ca6d7540f1055bc03f8cf64af
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash drivers/net/ethernet/mellanox/mlxbf_gige/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c: In function 'mlxbf_gige_probe':
>> drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c:343:19: error: too few arguments to function 'acpi_dev_gpio_irq_get_by'
     343 |         phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), "phy-gpios", 0);
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c:8:
   include/linux/acpi.h:1212:19: note: declared here
    1212 | static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/acpi_dev_gpio_irq_get_by +343 drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c

f92e1869d74e1a David Thompson 2021-06-24  272  
f92e1869d74e1a David Thompson 2021-06-24  273  static int mlxbf_gige_probe(struct platform_device *pdev)
f92e1869d74e1a David Thompson 2021-06-24  274  {
f92e1869d74e1a David Thompson 2021-06-24  275  	struct phy_device *phydev;
f92e1869d74e1a David Thompson 2021-06-24  276  	struct net_device *netdev;
f92e1869d74e1a David Thompson 2021-06-24  277  	struct mlxbf_gige *priv;
f92e1869d74e1a David Thompson 2021-06-24  278  	void __iomem *llu_base;
f92e1869d74e1a David Thompson 2021-06-24  279  	void __iomem *plu_base;
f92e1869d74e1a David Thompson 2021-06-24  280  	void __iomem *base;
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  281  	int addr, phy_irq;
f92e1869d74e1a David Thompson 2021-06-24  282  	u64 control;
f92e1869d74e1a David Thompson 2021-06-24  283  	int err;
f92e1869d74e1a David Thompson 2021-06-24  284  
464a57281f29af Cai Huoqing    2021-08-31  285  	base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_MAC);
f92e1869d74e1a David Thompson 2021-06-24  286  	if (IS_ERR(base))
f92e1869d74e1a David Thompson 2021-06-24  287  		return PTR_ERR(base);
f92e1869d74e1a David Thompson 2021-06-24  288  
464a57281f29af Cai Huoqing    2021-08-31  289  	llu_base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_LLU);
f92e1869d74e1a David Thompson 2021-06-24  290  	if (IS_ERR(llu_base))
f92e1869d74e1a David Thompson 2021-06-24  291  		return PTR_ERR(llu_base);
f92e1869d74e1a David Thompson 2021-06-24  292  
464a57281f29af Cai Huoqing    2021-08-31  293  	plu_base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_PLU);
f92e1869d74e1a David Thompson 2021-06-24  294  	if (IS_ERR(plu_base))
f92e1869d74e1a David Thompson 2021-06-24  295  		return PTR_ERR(plu_base);
f92e1869d74e1a David Thompson 2021-06-24  296  
f92e1869d74e1a David Thompson 2021-06-24  297  	/* Perform general init of GigE block */
f92e1869d74e1a David Thompson 2021-06-24  298  	control = readq(base + MLXBF_GIGE_CONTROL);
f92e1869d74e1a David Thompson 2021-06-24  299  	control |= MLXBF_GIGE_CONTROL_PORT_EN;
f92e1869d74e1a David Thompson 2021-06-24  300  	writeq(control, base + MLXBF_GIGE_CONTROL);
f92e1869d74e1a David Thompson 2021-06-24  301  
f92e1869d74e1a David Thompson 2021-06-24  302  	netdev = devm_alloc_etherdev(&pdev->dev, sizeof(*priv));
f92e1869d74e1a David Thompson 2021-06-24  303  	if (!netdev)
f92e1869d74e1a David Thompson 2021-06-24  304  		return -ENOMEM;
f92e1869d74e1a David Thompson 2021-06-24  305  
f92e1869d74e1a David Thompson 2021-06-24  306  	SET_NETDEV_DEV(netdev, &pdev->dev);
f92e1869d74e1a David Thompson 2021-06-24  307  	netdev->netdev_ops = &mlxbf_gige_netdev_ops;
f92e1869d74e1a David Thompson 2021-06-24  308  	netdev->ethtool_ops = &mlxbf_gige_ethtool_ops;
f92e1869d74e1a David Thompson 2021-06-24  309  	priv = netdev_priv(netdev);
f92e1869d74e1a David Thompson 2021-06-24  310  	priv->netdev = netdev;
f92e1869d74e1a David Thompson 2021-06-24  311  
f92e1869d74e1a David Thompson 2021-06-24  312  	platform_set_drvdata(pdev, priv);
f92e1869d74e1a David Thompson 2021-06-24  313  	priv->dev = &pdev->dev;
f92e1869d74e1a David Thompson 2021-06-24  314  	priv->pdev = pdev;
f92e1869d74e1a David Thompson 2021-06-24  315  
f92e1869d74e1a David Thompson 2021-06-24  316  	spin_lock_init(&priv->lock);
f92e1869d74e1a David Thompson 2021-06-24  317  
f92e1869d74e1a David Thompson 2021-06-24  318  	/* Attach MDIO device */
f92e1869d74e1a David Thompson 2021-06-24  319  	err = mlxbf_gige_mdio_probe(pdev, priv);
f92e1869d74e1a David Thompson 2021-06-24  320  	if (err)
f92e1869d74e1a David Thompson 2021-06-24  321  		return err;
f92e1869d74e1a David Thompson 2021-06-24  322  
f92e1869d74e1a David Thompson 2021-06-24  323  	priv->base = base;
f92e1869d74e1a David Thompson 2021-06-24  324  	priv->llu_base = llu_base;
f92e1869d74e1a David Thompson 2021-06-24  325  	priv->plu_base = plu_base;
f92e1869d74e1a David Thompson 2021-06-24  326  
f92e1869d74e1a David Thompson 2021-06-24  327  	priv->rx_q_entries = MLXBF_GIGE_DEFAULT_RXQ_SZ;
f92e1869d74e1a David Thompson 2021-06-24  328  	priv->tx_q_entries = MLXBF_GIGE_DEFAULT_TXQ_SZ;
f92e1869d74e1a David Thompson 2021-06-24  329  
f92e1869d74e1a David Thompson 2021-06-24  330  	/* Write initial MAC address to hardware */
f92e1869d74e1a David Thompson 2021-06-24  331  	mlxbf_gige_initial_mac(priv);
f92e1869d74e1a David Thompson 2021-06-24  332  
f92e1869d74e1a David Thompson 2021-06-24  333  	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
f92e1869d74e1a David Thompson 2021-06-24  334  	if (err) {
f92e1869d74e1a David Thompson 2021-06-24  335  		dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err);
f92e1869d74e1a David Thompson 2021-06-24  336  		goto out;
f92e1869d74e1a David Thompson 2021-06-24  337  	}
f92e1869d74e1a David Thompson 2021-06-24  338  
f92e1869d74e1a David Thompson 2021-06-24  339  	priv->error_irq = platform_get_irq(pdev, MLXBF_GIGE_ERROR_INTR_IDX);
f92e1869d74e1a David Thompson 2021-06-24  340  	priv->rx_irq = platform_get_irq(pdev, MLXBF_GIGE_RECEIVE_PKT_INTR_IDX);
f92e1869d74e1a David Thompson 2021-06-24  341  	priv->llu_plu_irq = platform_get_irq(pdev, MLXBF_GIGE_LLU_PLU_INTR_IDX);
f92e1869d74e1a David Thompson 2021-06-24  342  
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15 @343  	phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), "phy-gpios", 0);
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  344  	if (phy_irq < 0) {
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  345  		dev_err(&pdev->dev, "Error getting PHY irq. Use polling instead");
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  346  		phy_irq = PHY_POLL;
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  347  	}
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  348  
f92e1869d74e1a David Thompson 2021-06-24  349  	phydev = phy_find_first(priv->mdiobus);
f92e1869d74e1a David Thompson 2021-06-24  350  	if (!phydev) {
f92e1869d74e1a David Thompson 2021-06-24  351  		err = -ENODEV;
f92e1869d74e1a David Thompson 2021-06-24  352  		goto out;
f92e1869d74e1a David Thompson 2021-06-24  353  	}
f92e1869d74e1a David Thompson 2021-06-24  354  
f92e1869d74e1a David Thompson 2021-06-24  355  	addr = phydev->mdio.addr;
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  356  	priv->mdiobus->irq[addr] = phy_irq;
6c2a6ddca76327 Asmaa Mnebhi   2021-10-15  357  	phydev->irq = phy_irq;
f92e1869d74e1a David Thompson 2021-06-24  358  
f92e1869d74e1a David Thompson 2021-06-24  359  	err = phy_connect_direct(netdev, phydev,
f92e1869d74e1a David Thompson 2021-06-24  360  				 mlxbf_gige_adjust_link,
f92e1869d74e1a David Thompson 2021-06-24  361  				 PHY_INTERFACE_MODE_GMII);
f92e1869d74e1a David Thompson 2021-06-24  362  	if (err) {
f92e1869d74e1a David Thompson 2021-06-24  363  		dev_err(&pdev->dev, "Could not attach to PHY\n");
f92e1869d74e1a David Thompson 2021-06-24  364  		goto out;
f92e1869d74e1a David Thompson 2021-06-24  365  	}
f92e1869d74e1a David Thompson 2021-06-24  366  
f92e1869d74e1a David Thompson 2021-06-24  367  	/* MAC only supports 1000T full duplex mode */
f92e1869d74e1a David Thompson 2021-06-24  368  	phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
f92e1869d74e1a David Thompson 2021-06-24  369  	phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_100baseT_Full_BIT);
f92e1869d74e1a David Thompson 2021-06-24  370  	phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
f92e1869d74e1a David Thompson 2021-06-24  371  	phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Full_BIT);
f92e1869d74e1a David Thompson 2021-06-24  372  	phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
f92e1869d74e1a David Thompson 2021-06-24  373  
f92e1869d74e1a David Thompson 2021-06-24  374  	/* Only symmetric pause with flow control enabled is supported so no
f92e1869d74e1a David Thompson 2021-06-24  375  	 * need to negotiate pause.
f92e1869d74e1a David Thompson 2021-06-24  376  	 */
f92e1869d74e1a David Thompson 2021-06-24  377  	linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->advertising);
f92e1869d74e1a David Thompson 2021-06-24  378  	linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->advertising);
f92e1869d74e1a David Thompson 2021-06-24  379  
f92e1869d74e1a David Thompson 2021-06-24  380  	/* Display information about attached PHY device */
f92e1869d74e1a David Thompson 2021-06-24  381  	phy_attached_info(phydev);
f92e1869d74e1a David Thompson 2021-06-24  382  
f92e1869d74e1a David Thompson 2021-06-24  383  	err = register_netdev(netdev);
f92e1869d74e1a David Thompson 2021-06-24  384  	if (err) {
f92e1869d74e1a David Thompson 2021-06-24  385  		dev_err(&pdev->dev, "Failed to register netdev\n");
f92e1869d74e1a David Thompson 2021-06-24  386  		phy_disconnect(phydev);
f92e1869d74e1a David Thompson 2021-06-24  387  		goto out;
f92e1869d74e1a David Thompson 2021-06-24  388  	}
f92e1869d74e1a David Thompson 2021-06-24  389  
f92e1869d74e1a David Thompson 2021-06-24  390  	return 0;
f92e1869d74e1a David Thompson 2021-06-24  391  
f92e1869d74e1a David Thompson 2021-06-24  392  out:
f92e1869d74e1a David Thompson 2021-06-24  393  	mlxbf_gige_mdio_remove(priv);
f92e1869d74e1a David Thompson 2021-06-24  394  	return err;
f92e1869d74e1a David Thompson 2021-06-24  395  }
f92e1869d74e1a David Thompson 2021-06-24  396
diff mbox series

Patch

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index ecd7d169470b06..df02c3eb34a294 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -130,7 +130,8 @@  static int pca953x_acpi_get_irq(struct device *dev)
 	if (ret)
 		dev_warn(dev, "can't add GPIO ACPI mapping\n");
 
-	ret = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(dev), "irq-gpios", 0);
+	ret = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(dev), "irq-gpios", 0,
+				       NULL);
 	if (ret < 0)
 		return ret;
 
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 9be1376f9a627f..5cda2fcf7f43df 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -741,6 +741,7 @@  static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data)
 		lookup->info.pin_config = agpio->pin_config;
 		lookup->info.debounce = agpio->debounce_timeout;
 		lookup->info.gpioint = gpioint;
+		lookup->info.wake_capable = agpio->wake_capable;
 
 		/*
 		 * Polarity and triggering are only specified for GpioInt
@@ -991,6 +992,7 @@  struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
  * @adev: pointer to a ACPI device to get IRQ from
  * @name: optional name of GpioInt resource
  * @index: index of GpioInt resource (starting from %0)
+ * @wake_capable: Set to 1 if the IRQ is wake capable
  *
  * If the device has one or more GpioInt resources, this function can be
  * used to translate from the GPIO offset in the resource to the Linux IRQ
@@ -1002,9 +1004,13 @@  struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
  * The function takes optional @name parameter. If the resource has a property
  * name, then only those will be taken into account.
  *
+ * The GPIO is considered wake capable if GpioInt specifies SharedAndWake or
+ * ExclusiveAndWake.
+ *
  * Return: Linux IRQ number (> %0) on success, negative errno on failure.
  */
-int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index)
+int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name,
+			     int index, int *wake_capable)
 {
 	int idx, i;
 	unsigned int irq_flags;
@@ -1061,6 +1067,9 @@  int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int ind
 				dev_dbg(&adev->dev, "IRQ %d already in use\n", irq);
 			}
 
+			if (wake_capable)
+				*wake_capable = info.wake_capable;
+
 			return irq;
 		}
 
diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h
index e476558d947136..1ac6816839dbce 100644
--- a/drivers/gpio/gpiolib-acpi.h
+++ b/drivers/gpio/gpiolib-acpi.h
@@ -18,6 +18,7 @@  struct acpi_device;
  * @pin_config: pin bias as provided by ACPI
  * @polarity: interrupt polarity as provided by ACPI
  * @triggering: triggering type as provided by ACPI
+ * @wake_capable: wake capability as provided by ACPI
  * @debounce: debounce timeout as provided by ACPI
  * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
  */
@@ -28,6 +29,7 @@  struct acpi_gpio_info {
 	int pin_config;
 	int polarity;
 	int triggering;
+	bool wake_capable;
 	unsigned int debounce;
 	unsigned int quirks;
 };
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 6f64b2f3dc5479..7ee946758c5bcc 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1202,7 +1202,8 @@  bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
 				struct acpi_resource_gpio **agpio);
 bool acpi_gpio_get_io_resource(struct acpi_resource *ares,
 			       struct acpi_resource_gpio **agpio);
-int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index);
+int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name,
+			     int index, int *wake_capable);
 #else
 static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
 					      struct acpi_resource_gpio **agpio)
@@ -1215,7 +1216,8 @@  static inline bool acpi_gpio_get_io_resource(struct acpi_resource *ares,
 	return false;
 }
 static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev,
-					   const char *name, int index)
+					   const char *name, int index,
+					   int *wake_capable)
 {
 	return -ENXIO;
 }
@@ -1223,7 +1225,13 @@  static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev,
 
 static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
 {
-	return acpi_dev_gpio_irq_get_by(adev, NULL, index);
+	return acpi_dev_gpio_irq_get_by(adev, NULL, index, NULL);
+}
+
+static inline int acpi_dev_gpio_irq_get_wake(struct acpi_device *adev,
+					     int index, int *wake_capable)
+{
+	return acpi_dev_gpio_irq_get_by(adev, NULL, index, wake_capable);
 }
 
 /* Device properties */