HID: Intel-thc-hid: Intel-quicki2c: Add driver data support

This patch defines driver data structure and adds it into QuickI2C
device structure. Changes PCI ID table to use PCI_DEVICE_DATA() to
pass platform specific driver data into driver, let driver has
capability to enable different hardware features according to
different platform driver data.

Signed-off-by: Even Xu <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

Author: Evenxf

drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c

@@ -323,6 +323,7 @@ static irqreturn_t quicki2c_irq_thread_handler(int irq, void *dev_id)
  * quicki2c_dev_init - Initialize QuickI2C device
  * @pdev: Pointer to the THC PCI device
  * @mem_addr: The Pointer of MMIO memory address
+ * @ddata: Point to quicki2c_ddata structure
  *
  * Alloc quicki2c_device structure and initialized THC device,
  * then configure THC to HIDI2C mode.
@@ -332,7 +333,8 @@ static irqreturn_t quicki2c_irq_thread_handler(int irq, void *dev_id)
  * Return: Pointer to the quicki2c_device structure if success
  * or NULL on failure.
  */
-static struct quicki2c_device *quicki2c_dev_init(struct pci_dev *pdev, void __iomem *mem_addr)
+static struct quicki2c_device *quicki2c_dev_init(struct pci_dev *pdev, void __iomem *mem_addr,
+						 const struct quicki2c_ddata *ddata)
 {
 	struct device *dev = &pdev->dev;
 	struct quicki2c_device *qcdev;
@@ -346,6 +348,7 @@ static struct quicki2c_device *quicki2c_dev_init(struct pci_dev *pdev, void __io
 	qcdev->dev = dev;
 	qcdev->mem_addr = mem_addr;
 	qcdev->state = QUICKI2C_DISABLED;
+	qcdev->ddata = ddata;
 
 	init_waitqueue_head(&qcdev->reset_ack_wq);
 
@@ -529,9 +532,9 @@ static int quicki2c_alloc_report_buf(struct quicki2c_device *qcdev)
  *
  * Return 0 if success or error code on failure.
  */
-static int quicki2c_probe(struct pci_dev *pdev,
-			  const struct pci_device_id *id)
+static int quicki2c_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
+	const struct quicki2c_ddata *ddata = (const struct quicki2c_ddata *)id->driver_data;
 	struct quicki2c_device *qcdev;
 	void __iomem *mem_addr;
 	int ret;
@@ -569,7 +572,7 @@ static int quicki2c_probe(struct pci_dev *pdev,
 
 	pdev->irq = pci_irq_vector(pdev, 0);
 
-	qcdev = quicki2c_dev_init(pdev, mem_addr);
+	qcdev = quicki2c_dev_init(pdev, mem_addr, ddata);
 	if (IS_ERR(qcdev)) {
 		dev_err_once(&pdev->dev, "QuickI2C device init failed\n");
 		ret = PTR_ERR(qcdev);
@@ -919,13 +922,13 @@ static const struct dev_pm_ops quicki2c_pm_ops = {
 };
 
 static const struct pci_device_id quicki2c_pci_tbl[] = {
-	{PCI_VDEVICE(INTEL, THC_LNL_DEVICE_ID_I2C_PORT1), },
-	{PCI_VDEVICE(INTEL, THC_LNL_DEVICE_ID_I2C_PORT2), },
-	{PCI_VDEVICE(INTEL, THC_PTL_H_DEVICE_ID_I2C_PORT1), },
-	{PCI_VDEVICE(INTEL, THC_PTL_H_DEVICE_ID_I2C_PORT2), },
-	{PCI_VDEVICE(INTEL, THC_PTL_U_DEVICE_ID_I2C_PORT1), },
-	{PCI_VDEVICE(INTEL, THC_PTL_U_DEVICE_ID_I2C_PORT2), },
-	{}
+	{ PCI_DEVICE_DATA(INTEL, THC_LNL_DEVICE_ID_I2C_PORT1, NULL) },
+	{ PCI_DEVICE_DATA(INTEL, THC_LNL_DEVICE_ID_I2C_PORT2, NULL) },
+	{ PCI_DEVICE_DATA(INTEL, THC_PTL_H_DEVICE_ID_I2C_PORT1, NULL) },
+	{ PCI_DEVICE_DATA(INTEL, THC_PTL_H_DEVICE_ID_I2C_PORT2, NULL) },
+	{ PCI_DEVICE_DATA(INTEL, THC_PTL_U_DEVICE_ID_I2C_PORT1, NULL) },
+	{ PCI_DEVICE_DATA(INTEL, THC_PTL_U_DEVICE_ID_I2C_PORT2, NULL) },
+	{ }
 };
 MODULE_DEVICE_TABLE(pci, quicki2c_pci_tbl);
 

drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h

@@ -7,12 +7,12 @@
 #include <linux/hid-over-i2c.h>
 #include <linux/workqueue.h>
 
-#define THC_LNL_DEVICE_ID_I2C_PORT1	0xA848
-#define THC_LNL_DEVICE_ID_I2C_PORT2	0xA84A
-#define THC_PTL_H_DEVICE_ID_I2C_PORT1	0xE348
-#define THC_PTL_H_DEVICE_ID_I2C_PORT2	0xE34A
-#define THC_PTL_U_DEVICE_ID_I2C_PORT1	0xE448
-#define THC_PTL_U_DEVICE_ID_I2C_PORT2	0xE44A
+#define PCI_DEVICE_ID_INTEL_THC_LNL_DEVICE_ID_I2C_PORT1		0xA848
+#define PCI_DEVICE_ID_INTEL_THC_LNL_DEVICE_ID_I2C_PORT2		0xA84A
+#define PCI_DEVICE_ID_INTEL_THC_PTL_H_DEVICE_ID_I2C_PORT1	0xE348
+#define PCI_DEVICE_ID_INTEL_THC_PTL_H_DEVICE_ID_I2C_PORT2	0xE34A
+#define PCI_DEVICE_ID_INTEL_THC_PTL_U_DEVICE_ID_I2C_PORT1	0xE448
+#define PCI_DEVICE_ID_INTEL_THC_PTL_U_DEVICE_ID_I2C_PORT2	0xE44A
 
 /* Packet size value, the unit is 16 bytes */
 #define MAX_PACKET_SIZE_VALUE_LNL			256
@@ -122,6 +122,16 @@ struct quicki2c_subip_acpi_config {
 	u64 HMSL;
 };
 
+/**
+ * struct quicki2c_ddata - Driver specific data for quicki2c device
+ * @max_detect_size: Identify max packet size detect for rx
+ * @interrupt_delay: Identify interrupt detect delay for rx
+ */
+struct quicki2c_ddata {
+	u32 max_detect_size;
+	u32 interrupt_delay;
+};
+
 struct device;
 struct pci_dev;
 struct thc_device;
@@ -135,6 +145,7 @@ struct acpi_device;
  * @thc_hw: Point to THC device
  * @hid_dev: Point to HID device
  * @acpi_dev: Point to ACPI device
+ * @ddata: Point to QuickI2C platform specific driver data
  * @state: THC I2C device state
  * @mem_addr: MMIO memory address
  * @dev_desc: Device descriptor for HIDI2C protocol
@@ -158,6 +169,7 @@ struct quicki2c_device {
 	struct thc_device *thc_hw;
 	struct hid_device *hid_dev;
 	struct acpi_device *acpi_dev;
+	const struct quicki2c_ddata *ddata;
 	enum quicki2c_dev_state state;
 
 	void __iomem *mem_addr;