2016-12-19 08:17:46

by Jaehoon Chung

[permalink] [raw]
Subject: [PATCH 0/4] PCI: exynos: cleans the minor things

Current pci-exnoys.c is used for only EXYNOS5440.
Even if there is no use-case, just cleans the codes for maintaining.

In future, I will upstream for Exynso5433(TM2).
Before sending patches for exynos5433, i want to reuse the some codse in pic-exynos.c.
This patch is for perparing it.

My Final goal is to apply the pcie-exynos5433 into v4.11.

Jaehoon Chung (4):
PCI: exynos: replace to one register accessor from each accessors
PCI: exynos: Remove the unnecessary variables
PCI: exynos: Use the bitops API to operate the bit shifting
PCI: exynos: remove the duplicated codes

drivers/pci/host/pci-exynos.c | 260 +++++++++++++++++++-----------------------
1 file changed, 116 insertions(+), 144 deletions(-)

--
2.10.2


2016-12-19 08:17:49

by Jaehoon Chung

[permalink] [raw]
Subject: [PATCH 2/4] PCI: exynos: Remove the unnecessary variables

Remove the unnecessary variables(elbi/phy/block_base).
It needs one resource structure for assigning each resource.
So it replaces with one 'res' variable.

Signed-off-by: Jaehoon Chung <[email protected]>
---
drivers/pci/host/pci-exynos.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
index 6dbfa2c..d64e8f1 100644
--- a/drivers/pci/host/pci-exynos.c
+++ b/drivers/pci/host/pci-exynos.c
@@ -509,9 +509,7 @@ static int __init exynos_pcie_probe(struct platform_device *pdev)
struct exynos_pcie *exynos_pcie;
struct pcie_port *pp;
struct device_node *np = dev->of_node;
- struct resource *elbi_base;
- struct resource *phy_base;
- struct resource *block_base;
+ struct resource *res;
int ret;

exynos_pcie = devm_kzalloc(dev, sizeof(*exynos_pcie), GFP_KERNEL);
@@ -542,22 +540,22 @@ static int __init exynos_pcie_probe(struct platform_device *pdev)
if (ret)
goto fail_clk;

- elbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- exynos_pcie->elbi_base = devm_ioremap_resource(dev, elbi_base);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ exynos_pcie->elbi_base = devm_ioremap_resource(dev, res);
if (IS_ERR(exynos_pcie->elbi_base)) {
ret = PTR_ERR(exynos_pcie->elbi_base);
goto fail_bus_clk;
}

- phy_base = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- exynos_pcie->phy_base = devm_ioremap_resource(dev, phy_base);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ exynos_pcie->phy_base = devm_ioremap_resource(dev, res);
if (IS_ERR(exynos_pcie->phy_base)) {
ret = PTR_ERR(exynos_pcie->phy_base);
goto fail_bus_clk;
}

- block_base = platform_get_resource(pdev, IORESOURCE_MEM, 2);
- exynos_pcie->block_base = devm_ioremap_resource(dev, block_base);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ exynos_pcie->block_base = devm_ioremap_resource(dev, res);
if (IS_ERR(exynos_pcie->block_base)) {
ret = PTR_ERR(exynos_pcie->block_base);
goto fail_bus_clk;
--
2.10.2

2016-12-19 08:17:53

by Jaehoon Chung

[permalink] [raw]
Subject: [PATCH 4/4] PCI: exynos: remove the duplicated codes

Removed the duplicated codes.
It can use the more simply than now.

Signed-off-by: Jaehoon Chung <[email protected]>
---
drivers/pci/host/pci-exynos.c | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
index d705bfe..33562cf 100644
--- a/drivers/pci/host/pci-exynos.c
+++ b/drivers/pci/host/pci-exynos.c
@@ -116,30 +116,24 @@ static void exynos_pcie_sideband_dbi_w_mode(struct exynos_pcie *ep, bool on)
{
u32 val;

- if (on) {
- val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_AWMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_AWMISC);
+ if (on)
val |= PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_AWMISC);
- } else {
- val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_AWMISC);
+ else
val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_AWMISC);
- }
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_AWMISC);
}

static void exynos_pcie_sideband_dbi_r_mode(struct exynos_pcie *ep, bool on)
{
u32 val;

- if (on) {
- val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_ARMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_ARMISC);
+ if (on)
val |= PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_ARMISC);
- } else {
- val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_ARMISC);
+ else
val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_ARMISC);
- }
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_ARMISC);
}

static void exynos_pcie_assert_core_reset(struct exynos_pcie *ep)
--
2.10.2

2016-12-19 08:18:17

by Jaehoon Chung

[permalink] [raw]
Subject: [PATCH 3/4] PCI: exynos: Use the bitops API to operate the bit shifting

Just use the bitops api to operate the bit.

Signed-off-by: Jaehoon Chung <[email protected]>
---
drivers/pci/host/pci-exynos.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
index d64e8f1..d705bfe 100644
--- a/drivers/pci/host/pci-exynos.c
+++ b/drivers/pci/host/pci-exynos.c
@@ -40,19 +40,19 @@ struct exynos_pcie {

/* PCIe ELBI registers */
#define PCIE_IRQ_PULSE 0x000
-#define IRQ_INTA_ASSERT (0x1 << 0)
-#define IRQ_INTB_ASSERT (0x1 << 2)
-#define IRQ_INTC_ASSERT (0x1 << 4)
-#define IRQ_INTD_ASSERT (0x1 << 6)
+#define IRQ_INTA_ASSERT BIT(0)
+#define IRQ_INTB_ASSERT BIT(2)
+#define IRQ_INTC_ASSERT BIT(4)
+#define IRQ_INTD_ASSERT BIT(6)
#define PCIE_IRQ_LEVEL 0x004
#define PCIE_IRQ_SPECIAL 0x008
#define PCIE_IRQ_EN_PULSE 0x00c
#define PCIE_IRQ_EN_LEVEL 0x010
-#define IRQ_MSI_ENABLE (0x1 << 2)
+#define IRQ_MSI_ENABLE BIT(2)
#define PCIE_IRQ_EN_SPECIAL 0x014
#define PCIE_PWR_RESET 0x018
#define PCIE_CORE_RESET 0x01c
-#define PCIE_CORE_RESET_ENABLE (0x1 << 0)
+#define PCIE_CORE_RESET_ENABLE BIT(0)
#define PCIE_STICKY_RESET 0x020
#define PCIE_NONSTICKY_RESET 0x024
#define PCIE_APP_INIT_RESET 0x028
@@ -61,7 +61,7 @@ struct exynos_pcie {
#define PCIE_ELBI_LTSSM_ENABLE 0x1
#define PCIE_ELBI_SLV_AWMISC 0x11c
#define PCIE_ELBI_SLV_ARMISC 0x120
-#define PCIE_ELBI_SLV_DBI_ENABLE (0x1 << 21)
+#define PCIE_ELBI_SLV_DBI_ENABLE BIT(21)

/* PCIe Purple registers */
#define PCIE_PHY_GLOBAL_RESET 0x000
@@ -79,27 +79,27 @@ struct exynos_pcie {
#define PCIE_PHY_DCC_FEEDBACK 0x014
#define PCIE_PHY_PLL_DIV_1 0x05c
#define PCIE_PHY_COMMON_POWER 0x064
-#define PCIE_PHY_COMMON_PD_CMN (0x1 << 3)
+#define PCIE_PHY_COMMON_PD_CMN BIT(3)
#define PCIE_PHY_TRSV0_EMP_LVL 0x084
#define PCIE_PHY_TRSV0_DRV_LVL 0x088
#define PCIE_PHY_TRSV0_RXCDR 0x0ac
#define PCIE_PHY_TRSV0_POWER 0x0c4
-#define PCIE_PHY_TRSV0_PD_TSV (0x1 << 7)
+#define PCIE_PHY_TRSV0_PD_TSV BIT(7)
#define PCIE_PHY_TRSV0_LVCC 0x0dc
#define PCIE_PHY_TRSV1_EMP_LVL 0x144
#define PCIE_PHY_TRSV1_RXCDR 0x16c
#define PCIE_PHY_TRSV1_POWER 0x184
-#define PCIE_PHY_TRSV1_PD_TSV (0x1 << 7)
+#define PCIE_PHY_TRSV1_PD_TSV BIT(7)
#define PCIE_PHY_TRSV1_LVCC 0x19c
#define PCIE_PHY_TRSV2_EMP_LVL 0x204
#define PCIE_PHY_TRSV2_RXCDR 0x22c
#define PCIE_PHY_TRSV2_POWER 0x244
-#define PCIE_PHY_TRSV2_PD_TSV (0x1 << 7)
+#define PCIE_PHY_TRSV2_PD_TSV BIT(7)
#define PCIE_PHY_TRSV2_LVCC 0x25c
#define PCIE_PHY_TRSV3_EMP_LVL 0x2c4
#define PCIE_PHY_TRSV3_RXCDR 0x2ec
#define PCIE_PHY_TRSV3_POWER 0x304
-#define PCIE_PHY_TRSV3_PD_TSV (0x1 << 7)
+#define PCIE_PHY_TRSV3_PD_TSV BIT(7)
#define PCIE_PHY_TRSV3_LVCC 0x31c

static void exynos_pcie_writel(void __iomem *base, u32 val, u32 reg)
--
2.10.2

2016-12-19 08:18:36

by Jaehoon Chung

[permalink] [raw]
Subject: [PATCH 1/4] PCI: exynos: replace to one register accessor from each accessors

There is no reason to maintain *_blk/phy/elbi_* as register accessors.
It can be replaced to one register accessor.

Signed-off-by: Jaehoon Chung <[email protected]>
---
drivers/pci/host/pci-exynos.c | 214 +++++++++++++++++++-----------------------
1 file changed, 97 insertions(+), 117 deletions(-)

diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c
index f1c544b..6dbfa2c 100644
--- a/drivers/pci/host/pci-exynos.c
+++ b/drivers/pci/host/pci-exynos.c
@@ -102,197 +102,175 @@ struct exynos_pcie {
#define PCIE_PHY_TRSV3_PD_TSV (0x1 << 7)
#define PCIE_PHY_TRSV3_LVCC 0x31c

-static void exynos_elb_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
+static void exynos_pcie_writel(void __iomem *base, u32 val, u32 reg)
{
- writel(val, exynos_pcie->elbi_base + reg);
+ writel(val, base + reg);
}

-static u32 exynos_elb_readl(struct exynos_pcie *exynos_pcie, u32 reg)
+static u32 exynos_pcie_readl(void __iomem *base, u32 reg)
{
- return readl(exynos_pcie->elbi_base + reg);
+ return readl(base + reg);
}

-static void exynos_phy_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
-{
- writel(val, exynos_pcie->phy_base + reg);
-}
-
-static u32 exynos_phy_readl(struct exynos_pcie *exynos_pcie, u32 reg)
-{
- return readl(exynos_pcie->phy_base + reg);
-}
-
-static void exynos_blk_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
-{
- writel(val, exynos_pcie->block_base + reg);
-}
-
-static u32 exynos_blk_readl(struct exynos_pcie *exynos_pcie, u32 reg)
-{
- return readl(exynos_pcie->block_base + reg);
-}
-
-static void exynos_pcie_sideband_dbi_w_mode(struct exynos_pcie *exynos_pcie,
- bool on)
+static void exynos_pcie_sideband_dbi_w_mode(struct exynos_pcie *ep, bool on)
{
u32 val;

if (on) {
- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_AWMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_AWMISC);
val |= PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_AWMISC);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_AWMISC);
} else {
- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_AWMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_AWMISC);
val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_AWMISC);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_AWMISC);
}
}

-static void exynos_pcie_sideband_dbi_r_mode(struct exynos_pcie *exynos_pcie,
- bool on)
+static void exynos_pcie_sideband_dbi_r_mode(struct exynos_pcie *ep, bool on)
{
u32 val;

if (on) {
- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_ARMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_ARMISC);
val |= PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_ARMISC);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_ARMISC);
} else {
- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_ARMISC);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_ELBI_SLV_ARMISC);
val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_ARMISC);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_ELBI_SLV_ARMISC);
}
}

-static void exynos_pcie_assert_core_reset(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_assert_core_reset(struct exynos_pcie *ep)
{
u32 val;

- val = exynos_elb_readl(exynos_pcie, PCIE_CORE_RESET);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_CORE_RESET);
val &= ~PCIE_CORE_RESET_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_CORE_RESET);
- exynos_elb_writel(exynos_pcie, 0, PCIE_PWR_RESET);
- exynos_elb_writel(exynos_pcie, 0, PCIE_STICKY_RESET);
- exynos_elb_writel(exynos_pcie, 0, PCIE_NONSTICKY_RESET);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_CORE_RESET);
+ exynos_pcie_writel(ep->elbi_base, 0, PCIE_PWR_RESET);
+ exynos_pcie_writel(ep->elbi_base, 0, PCIE_STICKY_RESET);
+ exynos_pcie_writel(ep->elbi_base, 0, PCIE_NONSTICKY_RESET);
}

-static void exynos_pcie_deassert_core_reset(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_deassert_core_reset(struct exynos_pcie *ep)
{
u32 val;

- val = exynos_elb_readl(exynos_pcie, PCIE_CORE_RESET);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_CORE_RESET);
val |= PCIE_CORE_RESET_ENABLE;

- exynos_elb_writel(exynos_pcie, val, PCIE_CORE_RESET);
- exynos_elb_writel(exynos_pcie, 1, PCIE_STICKY_RESET);
- exynos_elb_writel(exynos_pcie, 1, PCIE_NONSTICKY_RESET);
- exynos_elb_writel(exynos_pcie, 1, PCIE_APP_INIT_RESET);
- exynos_elb_writel(exynos_pcie, 0, PCIE_APP_INIT_RESET);
- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_MAC_RESET);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_CORE_RESET);
+ exynos_pcie_writel(ep->elbi_base, 1, PCIE_STICKY_RESET);
+ exynos_pcie_writel(ep->elbi_base, 1, PCIE_NONSTICKY_RESET);
+ exynos_pcie_writel(ep->elbi_base, 1, PCIE_APP_INIT_RESET);
+ exynos_pcie_writel(ep->elbi_base, 0, PCIE_APP_INIT_RESET);
+ exynos_pcie_writel(ep->block_base, 1, PCIE_PHY_MAC_RESET);
}

-static void exynos_pcie_assert_phy_reset(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_assert_phy_reset(struct exynos_pcie *ep)
{
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_MAC_RESET);
- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_GLOBAL_RESET);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_MAC_RESET);
+ exynos_pcie_writel(ep->block_base, 1, PCIE_PHY_GLOBAL_RESET);
}

-static void exynos_pcie_deassert_phy_reset(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_deassert_phy_reset(struct exynos_pcie *ep)
{
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_GLOBAL_RESET);
- exynos_elb_writel(exynos_pcie, 1, PCIE_PWR_RESET);
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_COMMON_RESET);
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_CMN_REG);
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_TRSVREG_RESET);
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_TRSV_RESET);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_GLOBAL_RESET);
+ exynos_pcie_writel(ep->elbi_base, 1, PCIE_PWR_RESET);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_COMMON_RESET);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_CMN_REG);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_TRSVREG_RESET);
+ exynos_pcie_writel(ep->block_base, 0, PCIE_PHY_TRSV_RESET);
}

-static void exynos_pcie_power_on_phy(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_power_on_phy(struct exynos_pcie *ep)
{
u32 val;

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_COMMON_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_COMMON_POWER);
val &= ~PCIE_PHY_COMMON_PD_CMN;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_COMMON_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_COMMON_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV0_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV0_POWER);
val &= ~PCIE_PHY_TRSV0_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV0_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV0_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV1_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV1_POWER);
val &= ~PCIE_PHY_TRSV1_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV1_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV1_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV2_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV2_POWER);
val &= ~PCIE_PHY_TRSV2_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV2_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV2_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV3_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV3_POWER);
val &= ~PCIE_PHY_TRSV3_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV3_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV3_POWER);
}

-static void exynos_pcie_power_off_phy(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_power_off_phy(struct exynos_pcie *ep)
{
u32 val;

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_COMMON_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_COMMON_POWER);
val |= PCIE_PHY_COMMON_PD_CMN;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_COMMON_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_COMMON_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV0_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV0_POWER);
val |= PCIE_PHY_TRSV0_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV0_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV0_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV1_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV1_POWER);
val |= PCIE_PHY_TRSV1_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV1_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV1_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV2_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV2_POWER);
val |= PCIE_PHY_TRSV2_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV2_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV2_POWER);

- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV3_POWER);
+ val = exynos_pcie_readl(ep->phy_base, PCIE_PHY_TRSV3_POWER);
val |= PCIE_PHY_TRSV3_PD_TSV;
- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV3_POWER);
+ exynos_pcie_writel(ep->phy_base, val, PCIE_PHY_TRSV3_POWER);
}

-static void exynos_pcie_init_phy(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_init_phy(struct exynos_pcie *ep)
{
/* DCC feedback control off */
- exynos_phy_writel(exynos_pcie, 0x29, PCIE_PHY_DCC_FEEDBACK);
+ exynos_pcie_writel(ep->phy_base, 0x29, PCIE_PHY_DCC_FEEDBACK);

/* set TX/RX impedance */
- exynos_phy_writel(exynos_pcie, 0xd5, PCIE_PHY_IMPEDANCE);
+ exynos_pcie_writel(ep->phy_base, 0xd5, PCIE_PHY_IMPEDANCE);

/* set 50Mhz PHY clock */
- exynos_phy_writel(exynos_pcie, 0x14, PCIE_PHY_PLL_DIV_0);
- exynos_phy_writel(exynos_pcie, 0x12, PCIE_PHY_PLL_DIV_1);
+ exynos_pcie_writel(ep->phy_base, 0x14, PCIE_PHY_PLL_DIV_0);
+ exynos_pcie_writel(ep->phy_base, 0x12, PCIE_PHY_PLL_DIV_1);

/* set TX Differential output for lane 0 */
- exynos_phy_writel(exynos_pcie, 0x7f, PCIE_PHY_TRSV0_DRV_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x7f, PCIE_PHY_TRSV0_DRV_LVL);

/* set TX Pre-emphasis Level Control for lane 0 to minimum */
- exynos_phy_writel(exynos_pcie, 0x0, PCIE_PHY_TRSV0_EMP_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x0, PCIE_PHY_TRSV0_EMP_LVL);

/* set RX clock and data recovery bandwidth */
- exynos_phy_writel(exynos_pcie, 0xe7, PCIE_PHY_PLL_BIAS);
- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV0_RXCDR);
- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV1_RXCDR);
- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV2_RXCDR);
- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV3_RXCDR);
+ exynos_pcie_writel(ep->phy_base, 0xe7, PCIE_PHY_PLL_BIAS);
+ exynos_pcie_writel(ep->phy_base, 0x82, PCIE_PHY_TRSV0_RXCDR);
+ exynos_pcie_writel(ep->phy_base, 0x82, PCIE_PHY_TRSV1_RXCDR);
+ exynos_pcie_writel(ep->phy_base, 0x82, PCIE_PHY_TRSV2_RXCDR);
+ exynos_pcie_writel(ep->phy_base, 0x82, PCIE_PHY_TRSV3_RXCDR);

/* change TX Pre-emphasis Level Control for lanes */
- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV0_EMP_LVL);
- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV1_EMP_LVL);
- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV2_EMP_LVL);
- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV3_EMP_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x39, PCIE_PHY_TRSV0_EMP_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x39, PCIE_PHY_TRSV1_EMP_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x39, PCIE_PHY_TRSV2_EMP_LVL);
+ exynos_pcie_writel(ep->phy_base, 0x39, PCIE_PHY_TRSV3_EMP_LVL);

/* set LVCC */
- exynos_phy_writel(exynos_pcie, 0x20, PCIE_PHY_TRSV0_LVCC);
- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV1_LVCC);
- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV2_LVCC);
- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV3_LVCC);
+ exynos_pcie_writel(ep->phy_base, 0x20, PCIE_PHY_TRSV0_LVCC);
+ exynos_pcie_writel(ep->phy_base, 0xa0, PCIE_PHY_TRSV1_LVCC);
+ exynos_pcie_writel(ep->phy_base, 0xa0, PCIE_PHY_TRSV2_LVCC);
+ exynos_pcie_writel(ep->phy_base, 0xa0, PCIE_PHY_TRSV3_LVCC);
}

static void exynos_pcie_assert_reset(struct exynos_pcie *exynos_pcie)
@@ -323,46 +301,48 @@ static int exynos_pcie_establish_link(struct exynos_pcie *exynos_pcie)
exynos_pcie_init_phy(exynos_pcie);

/* pulse for common reset */
- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_COMMON_RESET);
+ exynos_pcie_writel(exynos_pcie->block_base, 1, PCIE_PHY_COMMON_RESET);
udelay(500);
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_COMMON_RESET);
+ exynos_pcie_writel(exynos_pcie->block_base, 0, PCIE_PHY_COMMON_RESET);

exynos_pcie_deassert_core_reset(exynos_pcie);
dw_pcie_setup_rc(pp);
exynos_pcie_assert_reset(exynos_pcie);

/* assert LTSSM enable */
- exynos_elb_writel(exynos_pcie, PCIE_ELBI_LTSSM_ENABLE,
+ exynos_pcie_writel(exynos_pcie->elbi_base, PCIE_ELBI_LTSSM_ENABLE,
PCIE_APP_LTSSM_ENABLE);

/* check if the link is up or not */
if (!dw_pcie_wait_for_link(pp))
return 0;

- while (exynos_phy_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED) == 0) {
- val = exynos_blk_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED);
+ while (exynos_pcie_readl(exynos_pcie->phy_base,
+ PCIE_PHY_PLL_LOCKED) == 0) {
+ val = exynos_pcie_readl(exynos_pcie->block_base,
+ PCIE_PHY_PLL_LOCKED);
dev_info(dev, "PLL Locked: 0x%x\n", val);
}
exynos_pcie_power_off_phy(exynos_pcie);
return -ETIMEDOUT;
}

-static void exynos_pcie_clear_irq_pulse(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_clear_irq_pulse(struct exynos_pcie *ep)
{
u32 val;

- val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_IRQ_PULSE);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_IRQ_PULSE);
}

-static void exynos_pcie_enable_irq_pulse(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_enable_irq_pulse(struct exynos_pcie *ep)
{
u32 val;

/* enable INTX interrupt */
val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
IRQ_INTC_ASSERT | IRQ_INTD_ASSERT;
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_IRQ_EN_PULSE);
}

static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
@@ -381,17 +361,17 @@ static irqreturn_t exynos_pcie_msi_irq_handler(int irq, void *arg)
return dw_handle_msi_irq(pp);
}

-static void exynos_pcie_msi_init(struct exynos_pcie *exynos_pcie)
+static void exynos_pcie_msi_init(struct exynos_pcie *ep)
{
- struct pcie_port *pp = &exynos_pcie->pp;
+ struct pcie_port *pp = &ep->pp;
u32 val;

dw_pcie_msi_init(pp);

/* enable MSI interrupt */
- val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
+ val = exynos_pcie_readl(ep->elbi_base, PCIE_IRQ_EN_LEVEL);
val |= IRQ_MSI_ENABLE;
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
+ exynos_pcie_writel(ep->elbi_base, val, PCIE_IRQ_EN_LEVEL);
}

static void exynos_pcie_enable_interrupts(struct exynos_pcie *exynos_pcie)
@@ -451,7 +431,7 @@ static int exynos_pcie_link_up(struct pcie_port *pp)
struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
u32 val;

- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_RDLH_LINKUP);
+ val = exynos_pcie_readl(exynos_pcie->elbi_base, PCIE_ELBI_RDLH_LINKUP);
if (val == PCIE_ELBI_LTSSM_ENABLE)
return 1;

--
2.10.2

2016-12-21 06:12:20

by Pankaj Dubey

[permalink] [raw]
Subject: Re: [1/4] PCI: exynos: replace to one register accessor from each accessors

Hi Jaehoon,

On Monday 19 December 2016 01:47 PM, Jaehoon Chung wrote:
> There is no reason to maintain *_blk/phy/elbi_* as register accessors.
> It can be replaced to one register accessor.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---

Looks fine. Nice cleanup :)

Reviewed-by: Pankaj Dubey <[email protected]>

2016-12-21 06:17:31

by Pankaj Dubey

[permalink] [raw]
Subject: Re: [2/4] PCI: exynos: Remove the unnecessary variables

Hi Jaehoon,

On Monday 19 December 2016 01:47 PM, Jaehoon Chung wrote:
> Remove the unnecessary variables(elbi/phy/block_base).
> It needs one resource structure for assigning each resource.
> So it replaces with one 'res' variable.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 16 +++++++---------
> 1 file changed, 7 insertions(+), 9 deletions(-)
>

Reviewed-by: Pankaj Dubey <[email protected]>

2016-12-21 06:19:58

by Pankaj Dubey

[permalink] [raw]
Subject: Re: [3/4] PCI: exynos: Use the bitops API to operate the bit shifting

Hi Jaehoon,

On Monday 19 December 2016 01:47 PM, Jaehoon Chung wrote:
> Just use the bitops api to operate the bit.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 24 ++++++++++++------------
> 1 file changed, 12 insertions(+), 12 deletions(-)
>

Reviewed-by: Pankaj Dubey <[email protected]>

2016-12-21 06:20:59

by Pankaj Dubey

[permalink] [raw]
Subject: Re: [4/4] PCI: exynos: remove the duplicated codes

Hi Jaehoon,

On Monday 19 December 2016 01:47 PM, Jaehoon Chung wrote:
> Removed the duplicated codes.
> It can use the more simply than now.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 22 ++++++++--------------
> 1 file changed, 8 insertions(+), 14 deletions(-)
>
>

Reviewed-by: Pankaj Dubey <[email protected]>

Thanks,
Pankaj Dubey

2016-12-24 09:27:48

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH 1/4] PCI: exynos: replace to one register accessor from each accessors

On Mon, Dec 19, 2016 at 05:17:37PM +0900, Jaehoon Chung wrote:
> There is no reason to maintain *_blk/phy/elbi_* as register accessors.
> It can be replaced to one register accessor.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 214 +++++++++++++++++++-----------------------
> 1 file changed, 97 insertions(+), 117 deletions(-)

Acked-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2016-12-24 10:53:26

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH 2/4] PCI: exynos: Remove the unnecessary variables

On Mon, Dec 19, 2016 at 05:17:38PM +0900, Jaehoon Chung wrote:
> Remove the unnecessary variables(elbi/phy/block_base).
> It needs one resource structure for assigning each resource.
> So it replaces with one 'res' variable.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 16 +++++++---------
> 1 file changed, 7 insertions(+), 9 deletions(-)

Acked-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2016-12-24 10:54:19

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH 3/4] PCI: exynos: Use the bitops API to operate the bit shifting

On Mon, Dec 19, 2016 at 05:17:39PM +0900, Jaehoon Chung wrote:
> Just use the bitops api to operate the bit.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 24 ++++++++++++------------
> 1 file changed, 12 insertions(+), 12 deletions(-)


Acked-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2016-12-24 11:02:49

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH 4/4] PCI: exynos: remove the duplicated codes

On Mon, Dec 19, 2016 at 05:17:40PM +0900, Jaehoon Chung wrote:
> Removed the duplicated codes.
> It can use the more simply than now.
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> ---
> drivers/pci/host/pci-exynos.c | 22 ++++++++--------------
> 1 file changed, 8 insertions(+), 14 deletions(-)

Acked-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof