linux-kernel - [PATCH 2/2] drm: replace Target Link Speed magic numbers with PCI_EXP

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Message-Id: <20191107222047.125496-3-helgaas@kernel.org>
Date:   Thu,  7 Nov 2019 16:20:47 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Zhou <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Frederick Lawler <fred@...dlawl.com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 2/2] drm: replace Target Link Speed magic numbers with PCI_EXP_LNKCTL2 definitions

From: Bjorn Helgaas <bhelgaas@...gle.com>

Replace hard-coded magic numbers with the descript PCI_EXP_LNKCTL2
definitions.  No functional change intended.
---
 drivers/gpu/drm/amd/amdgpu/cik.c | 8 ++++----
 drivers/gpu/drm/amd/amdgpu/si.c  | 8 ++++----
 drivers/gpu/drm/radeon/cik.c     | 8 ++++----
 drivers/gpu/drm/radeon/si.c      | 8 ++++----
 4 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
index e4a595cdd4c1..3067bb874032 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik.c
@@ -1527,13 +1527,13 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
 	WREG32_PCIE(ixPCIE_LC_SPEED_CNTL, speed_cntl);
 
 	pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
-	tmp16 &= ~0xf;
+	tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
 	if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
-		tmp16 |= 3; /* gen3 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
 	else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
-		tmp16 |= 2; /* gen2 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
 	else
-		tmp16 |= 1; /* gen1 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
 	pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
 
 	speed_cntl = RREG32_PCIE(ixPCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c
index cf543410a424..d5c83d82063b 100644
--- a/drivers/gpu/drm/amd/amdgpu/si.c
+++ b/drivers/gpu/drm/amd/amdgpu/si.c
@@ -1762,13 +1762,13 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
 	WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
 
 	pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
-	tmp16 &= ~0xf;
+	tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
 	if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
-		tmp16 |= 3;
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
 	else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
-		tmp16 |= 2;
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
 	else
-		tmp16 |= 1;
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
 	pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
 
 	speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 95ffa0bff2d8..a280442c81aa 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -9647,13 +9647,13 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
 	WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
 
 	pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
-	tmp16 &= ~0xf;
+	tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
 	if (speed_cap == PCIE_SPEED_8_0GT)
-		tmp16 |= 3; /* gen3 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
 	else if (speed_cap == PCIE_SPEED_5_0GT)
-		tmp16 |= 2; /* gen2 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
 	else
-		tmp16 |= 1; /* gen1 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
 	pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
 
 	speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 69993d34d1e9..529e70a42019 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -7230,13 +7230,13 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
 	WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
 
 	pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
-	tmp16 &= ~0xf;
+	tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
 	if (speed_cap == PCIE_SPEED_8_0GT)
-		tmp16 |= 3; /* gen3 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
 	else if (speed_cap == PCIE_SPEED_5_0GT)
-		tmp16 |= 2; /* gen2 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
 	else
-		tmp16 |= 1; /* gen1 */
+		tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
 	pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
 
 	speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog