linux-kernel - [PATCH v4 05/11] PCI: dwc: imx6: Share PHY debug register definitions

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Date:   Sun, 14 Apr 2019 17:46:26 -0700
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-pci@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Chris Healy <cphealy@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v4 05/11] PCI: dwc: imx6: Share PHY debug register definitions

Both pcie-designware.c and pci-imx6.c contain custom definitions for
PHY debug registers R0/R1 and on top of that there's already a
definition for R0 in pcie-designware.h. Move all of the definitions to
pcie-designware.h. No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Reviewed-by: Lucas Stach <l.stach@...gutronix.de>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Chris Healy <cphealy@...il.com>
Cc: Lucas Stach <l.stach@...gutronix.de>
Cc: linux-kernel@...r.kernel.org
Cc: linux-pci@...r.kernel.org
---
 drivers/pci/controller/dwc/pci-imx6.c        |  6 ++----
 drivers/pci/controller/dwc/pcie-designware.c | 12 +++---------
 drivers/pci/controller/dwc/pcie-designware.h |  3 +++
 3 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index c0867df090f5..eeacdebd9b50 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -103,8 +103,6 @@ struct imx6_pcie {
 
 /* PCIe Port Logic registers (memory-mapped) */
 #define PL_OFFSET 0x700
-#define PCIE_PHY_DEBUG_R0 (PL_OFFSET + 0x28)
-#define PCIE_PHY_DEBUG_R1 (PL_OFFSET + 0x2c)
 
 #define PCIE_PHY_CTRL (PL_OFFSET + 0x114)
 #define PCIE_PHY_CTRL_DATA_LOC 0
@@ -831,8 +829,8 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie)
 
 err_reset_phy:
 	dev_dbg(dev, "PHY DEBUG_R0=0x%08x DEBUG_R1=0x%08x\n",
-		dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R0),
-		dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R1));
+		dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0),
+		dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG1));
 	imx6_pcie_reset_phy(imx6_pcie);
 	return ret;
 }
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 31f6331ca46f..086e87a40316 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -14,12 +14,6 @@
 
 #include "pcie-designware.h"
 
-/* PCIe Port Logic registers */
-#define PLR_OFFSET			0x700
-#define PCIE_PHY_DEBUG_R1		(PLR_OFFSET + 0x2c)
-#define PCIE_PHY_DEBUG_R1_LINK_UP	(0x1 << 4)
-#define PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING	(0x1 << 29)
-
 int dw_pcie_read(void __iomem *addr, int size, u32 *val)
 {
 	if (!IS_ALIGNED((uintptr_t)addr, size)) {
@@ -334,9 +328,9 @@ int dw_pcie_link_up(struct dw_pcie *pci)
 	if (pci->ops->link_up)
 		return pci->ops->link_up(pci);
 
-	val = readl(pci->dbi_base + PCIE_PHY_DEBUG_R1);
-	return ((val & PCIE_PHY_DEBUG_R1_LINK_UP) &&
-		(!(val & PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING)));
+	val = readl(pci->dbi_base + PCIE_PORT_DEBUG1);
+	return ((val & PCIE_PORT_DEBUG1_LINK_UP) &&
+		(!(val & PCIE_PORT_DEBUG1_LINK_IN_TRAINING)));
 }
 
 void dw_pcie_setup(struct dw_pcie *pci)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 377f4c0b52da..b33ae13194be 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -41,6 +41,9 @@
 #define PCIE_PORT_DEBUG0		0x728
 #define PORT_LOGIC_LTSSM_STATE_MASK	0x1f
 #define PORT_LOGIC_LTSSM_STATE_L0	0x11
+#define PCIE_PORT_DEBUG1		0x72C
+#define PCIE_PORT_DEBUG1_LINK_UP		BIT(4)
+#define PCIE_PORT_DEBUG1_LINK_IN_TRAINING	BIT(29)
 
 #define PCIE_LINK_WIDTH_SPEED_CONTROL	0x80C
 #define PORT_LOGIC_SPEED_CHANGE		BIT(17)
-- 
2.20.1