linux-kernel - [PATCH v1 1/1] media: atomisp: Get rid of PCI device ID hack check

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Date: Tue,  2 Apr 2024 23:44:47 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Hans de Goede <hdegoede@...hat.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-media@...r.kernel.org,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v1 1/1] media: atomisp: Get rid of PCI device ID hack check

Always check exact PCI ID match and drop hack checks.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 .../media/atomisp/pci/atomisp_internal.h      |  3 +-
 .../staging/media/atomisp/pci/atomisp_v4l2.c  | 40 +++++++++----------
 2 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_internal.h b/drivers/staging/media/atomisp/pci/atomisp_internal.h
index bba9bc64d447..e6a090d9f310 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_internal.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_internal.h
@@ -49,14 +49,13 @@
 	(((isp)->media_dev.hw_revision & ATOMISP_HW_REVISION_MASK) == \
 	 ((rev) << ATOMISP_HW_REVISION_SHIFT))
 
-#define ATOMISP_PCI_DEVICE_SOC_MASK	0xfff8
+#define ATOMISP_PCI_DEVICE_SOC_BYT	0x0f38
 /* MRFLD with 0x1178: ISP freq can burst to 457MHz */
 #define ATOMISP_PCI_DEVICE_SOC_MRFLD	0x1178
 /* MRFLD with 0x1179: max ISP freq limited to 400MHz */
 #define ATOMISP_PCI_DEVICE_SOC_MRFLD_1179	0x1179
 /* MRFLD with 0x117a: max ISP freq is 400MHz and max freq at Vmin is 200MHz */
 #define ATOMISP_PCI_DEVICE_SOC_MRFLD_117A	0x117a
-#define ATOMISP_PCI_DEVICE_SOC_BYT	0x0f38
 #define ATOMISP_PCI_DEVICE_SOC_ANN	0x1478
 #define ATOMISP_PCI_DEVICE_SOC_CHT	0x22b8
 
diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index f736e54c7df3..4f414b812408 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -1238,7 +1238,8 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 	const struct atomisp_platform_data *pdata;
 	struct atomisp_device *isp;
 	unsigned int start;
-	int err, val;
+	u32 val;
+	int err;
 
 	/* Pointer to struct device. */
 	atomisp_dev = &pdev->dev;
@@ -1266,8 +1267,10 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 
 	pci_set_drvdata(pdev, isp);
 
-	switch (id->device & ATOMISP_PCI_DEVICE_SOC_MASK) {
+	switch (id->device) {
 	case ATOMISP_PCI_DEVICE_SOC_MRFLD:
+	case ATOMISP_PCI_DEVICE_SOC_MRFLD_1179:
+	case ATOMISP_PCI_DEVICE_SOC_MRFLD_117A:
 		isp->media_dev.hw_revision =
 		    (ATOMISP_HW_REVISION_ISP2400
 		     << ATOMISP_HW_REVISION_SHIFT) |
@@ -1420,28 +1423,25 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 	 */
 	atomisp_css2_hw_store_32(MRFLD_CSI_RECEIVER_SELECTION_REG, 1);
 
-	if ((id->device & ATOMISP_PCI_DEVICE_SOC_MASK) ==
-	    ATOMISP_PCI_DEVICE_SOC_MRFLD) {
-		u32 csi_afe_trim;
-
+	switch (id->device) {
+	case ATOMISP_PCI_DEVICE_SOC_MRFLD:
+	case ATOMISP_PCI_DEVICE_SOC_MRFLD_1179:
+	case ATOMISP_PCI_DEVICE_SOC_MRFLD_117A:
 		/*
 		 * Workaround for imbalance data eye issue which is observed
 		 * on TNG B0.
 		 */
-		pci_read_config_dword(pdev, MRFLD_PCI_CSI_AFE_TRIM_CONTROL, &csi_afe_trim);
-		csi_afe_trim &= ~((MRFLD_PCI_CSI_HSRXCLKTRIM_MASK <<
-				   MRFLD_PCI_CSI1_HSRXCLKTRIM_SHIFT) |
-				  (MRFLD_PCI_CSI_HSRXCLKTRIM_MASK <<
-				   MRFLD_PCI_CSI2_HSRXCLKTRIM_SHIFT) |
-				  (MRFLD_PCI_CSI_HSRXCLKTRIM_MASK <<
-				   MRFLD_PCI_CSI3_HSRXCLKTRIM_SHIFT));
-		csi_afe_trim |= (MRFLD_PCI_CSI1_HSRXCLKTRIM <<
-				 MRFLD_PCI_CSI1_HSRXCLKTRIM_SHIFT) |
-				(MRFLD_PCI_CSI2_HSRXCLKTRIM <<
-				 MRFLD_PCI_CSI2_HSRXCLKTRIM_SHIFT) |
-				(MRFLD_PCI_CSI3_HSRXCLKTRIM <<
-				 MRFLD_PCI_CSI3_HSRXCLKTRIM_SHIFT);
-		pci_write_config_dword(pdev, MRFLD_PCI_CSI_AFE_TRIM_CONTROL, csi_afe_trim);
+		pci_read_config_dword(pdev, MRFLD_PCI_CSI_AFE_TRIM_CONTROL, &val);
+		val &= ~((MRFLD_PCI_CSI_HSRXCLKTRIM_MASK << MRFLD_PCI_CSI1_HSRXCLKTRIM_SHIFT) |
+			 (MRFLD_PCI_CSI_HSRXCLKTRIM_MASK << MRFLD_PCI_CSI2_HSRXCLKTRIM_SHIFT) |
+			 (MRFLD_PCI_CSI_HSRXCLKTRIM_MASK << MRFLD_PCI_CSI3_HSRXCLKTRIM_SHIFT));
+		val |= (MRFLD_PCI_CSI1_HSRXCLKTRIM << MRFLD_PCI_CSI1_HSRXCLKTRIM_SHIFT) |
+		       (MRFLD_PCI_CSI2_HSRXCLKTRIM << MRFLD_PCI_CSI2_HSRXCLKTRIM_SHIFT) |
+		       (MRFLD_PCI_CSI3_HSRXCLKTRIM << MRFLD_PCI_CSI3_HSRXCLKTRIM_SHIFT);
+		pci_write_config_dword(pdev, MRFLD_PCI_CSI_AFE_TRIM_CONTROL, val);
+		break;
+	default:
+		break;
 	}
 
 	err = atomisp_initialize_modules(isp);
-- 
2.43.0.rc1.1.gbec44491f096