[PATCH v2 01/15] Remove unused symbols, unnecessary parens, other minor comments from

Bjorn Helgaas
2016-09-02T15:54:10Z

Guenter.
---
drivers/pci/host/pcie-rockchip.c | 69 ++++++++++++--------------------------
1 file changed, 21 insertions(+), 48 deletions(-)

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index e77aec3..a7006be 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -38,7 +38,6 @@
#include <linux/regmap.h>

#define PCIE_CLIENT_BASE 0x0
-#define PCIE_RC_CONFIG_NORMAL_BASE 0x800000
#define PCIE_RC_CONFIG_BASE 0xa00000
#define PCIE_RC_CONFIG_L1_SUBSTATE_CTRL2 0x90c
#define PCIE_RC_CONFIG_LCSR 0xd0
@@ -126,9 +125,6 @@
#define RC_REGION_0_ADDR_TRANS_H 0x00000000
#define RC_REGION_0_ADDR_TRANS_L 0x00000000
#define RC_REGION_0_PASS_BITS (25 - 1)
-#define RC_REGION_1_ADDR_TRANS_H 0x00000000
-#define RC_REGION_1_ADDR_TRANS_L 0x00400000
-#define RC_REGION_1_PASS_BITS (20 - 1)
#define MAX_AXI_WRAPPER_REGION_NUM 33
#define PCIE_CORE_LCSR_RETRAIN_LINK BIT(5)
#define PCIE_CLIENT_CONF_ENABLE BIT(0)
@@ -147,15 +143,12 @@
#define PCIE_CLIENT_MODE_SHIFT 6
#define PCIE_CLIENT_MODE_MASK 0x1
#define PCIE_CLIENT_GEN_SEL_2 1
-#define PCIE_CLIENT_GEN_SEL_1 0
#define PCIE_CLIENT_GEN_SEL_SHIFT 7
#define PCIE_CLIENT_GEN_SEL_MASK 0x1
#define PCIE_CLIENT_LINK_STATUS_UP 0x3
#define PCIE_CLIENT_LINK_STATUS_SHIFT 20
#define PCIE_CLIENT_LINK_STATUS_MASK 0x3
-#define PCIE_CORE_PL_CONF_SPEED_2_5G 0x0
#define PCIE_CORE_PL_CONF_SPEED_5G 0x1
-#define PCIE_CORE_PL_CONF_SPEED_8G 0x2
#define PCIE_CORE_PL_CONF_SPEED_SHIFT 3
#define PCIE_CORE_PL_CONF_SPEED_MASK 0x3
#define PCIE_CORE_PL_CONF_LANE_SHIFT 1
@@ -174,11 +167,6 @@
PCIE_CORE_INT_CT | PCIE_CORE_INT_UTC | \
PCIE_CORE_INT_MMVC)

-#define PCIE_CLIENT_INT_SUBSYSTEM \
- (PCIE_CLIENT_INT_PWR_STCG | PCIE_CLIENT_INT_HOT_PLUG | \
- PCIE_CLIENT_INT_PHY | PCIE_CLIENT_INT_UDMA | \
- PCIE_CLIENT_INT_LOCAL)
-
#define PCIE_CLIENT_INT_LEGACY \
(PCIE_CLIENT_INT_INTA | PCIE_CLIENT_INT_INTB | \
PCIE_CLIENT_INT_INTC | PCIE_CLIENT_INT_INTD)
@@ -191,8 +179,8 @@
PCIE_CLIENT_INT_PHY)

struct rockchip_pcie_port {
- void __iomem *reg_base;
- void __iomem *apb_base;
+ void __iomem *reg_base; /* DT axi-base */
+ void __iomem *apb_base; /* DT apb-base */
struct phy *phy;
struct reset_control *core_rst;
struct reset_control *mgmt_rst;
@@ -240,7 +228,7 @@ static void rockchip_pcie_clr_bw_int(struct rockchip_pcie_port *port)
pcie_write(port, status, PCIE_RC_CONFIG_BASE + PCIE_RC_CONFIG_LCSR);
}

-static int rockchip_pcie_valid_config(struct rockchip_pcie_port *pp,
+static int rockchip_pcie_valid_device(struct rockchip_pcie_port *pp,
struct pci_bus *bus, int dev)
{
/* access only one slot on each root port */
@@ -286,7 +274,7 @@ static int rockchip_pcie_wr_own_conf(struct rockchip_pcie_port *pp,
{
u32 mask, tmp, offset;

- offset = (where & (~0x3));
+ offset = where & ~0x3;

if (size == 4) {
writel(val, pp->apb_base + PCIE_RC_CONFIG_BASE + offset);
@@ -357,7 +345,7 @@ static int rockchip_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
{
struct rockchip_pcie_port *pp = bus->sysdata;

- if (!rockchip_pcie_valid_config(pp, bus, PCI_SLOT(devfn))) {
+ if (!rockchip_pcie_valid_device(pp, bus, PCI_SLOT(devfn))) {
*val = 0xffffffff;
return PCIBIOS_DEVICE_NOT_FOUND;
}
@@ -366,7 +354,6 @@ static int rockchip_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
return rockchip_pcie_rd_own_conf(pp, where, size, val);

return rockchip_pcie_rd_other_conf(pp, bus, devfn, where, size, val);
-
}

static int rockchip_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
@@ -374,7 +361,7 @@ static int rockchip_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
{
struct rockchip_pcie_port *pp = bus->sysdata;

- if (!rockchip_pcie_valid_config(pp, bus, PCI_SLOT(devfn)))
+ if (!rockchip_pcie_valid_device(pp, bus, PCI_SLOT(devfn)))
return PCIBIOS_DEVICE_NOT_FOUND;

if (bus->number == pp->root_bus_nr)
@@ -516,7 +503,6 @@ static int rockchip_pcie_init_port(struct rockchip_pcie_port *port)
err = -ETIMEDOUT;
break;
}
-
}

/* Double check gen1 training */
@@ -744,11 +730,6 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie_port *port)
regs = platform_get_resource_byname(pdev,
IORESOURCE_MEM,
"axi-base");
- if (!regs) {
- dev_err(dev, "missing axi-base property\n");
- return -ENODEV;
- }
-
port->reg_base = devm_ioremap_resource(dev, regs);
if (IS_ERR(port->reg_base))
return PTR_ERR(port->reg_base);
@@ -756,11 +737,6 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie_port *port)
regs = platform_get_resource_byname(pdev,
IORESOURCE_MEM,
"apb-base");
- if (!regs) {
- dev_err(dev, "missing apb-base property\n");
- return -ENODEV;
- }
-
port->apb_base = devm_ioremap_resource(dev, regs);
if (IS_ERR(port->apb_base))
return PTR_ERR(port->apb_base);
@@ -774,38 +750,38 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie_port *port)

port->lanes = 1;
err = of_property_read_u32(node, "num-lanes", &port->lanes);
- if (!err && ((port->lanes == 0) ||
- (port->lanes == 3) ||
- (port->lanes > 4))) {
- dev_warn(dev, "invalid num-lanes, default use one lane\n");
+ if (!err && (port->lanes == 0 ||
+ port->lanes == 3 ||
+ port->lanes > 4)) {
+ dev_warn(dev, "invalid num-lanes, default to use one lane\n");
port->lanes = 1;
}

port->core_rst = devm_reset_control_get(dev, "core");
if (IS_ERR(port->core_rst)) {
if (PTR_ERR(port->core_rst) != -EPROBE_DEFER)
- dev_err(dev, "missing core rst property in node\n");
+ dev_err(dev, "missing core reset property in node\n");
return PTR_ERR(port->core_rst);
}

port->mgmt_rst = devm_reset_control_get(dev, "mgmt");
if (IS_ERR(port->mgmt_rst)) {
if (PTR_ERR(port->mgmt_rst) != -EPROBE_DEFER)
- dev_err(dev, "missing mgmt rst property in node\n");
+ dev_err(dev, "missing mgmt reset property in node\n");
return PTR_ERR(port->mgmt_rst);
}

port->mgmt_sticky_rst = devm_reset_control_get(dev, "mgmt-sticky");
if (IS_ERR(port->mgmt_sticky_rst)) {
if (PTR_ERR(port->mgmt_sticky_rst) != -EPROBE_DEFER)
- dev_err(dev, "missing mgmt-sticky rst property in node\n");
+ dev_err(dev, "missing mgmt-sticky reset property in node\n");
return PTR_ERR(port->mgmt_sticky_rst);
}

port->pipe_rst = devm_reset_control_get(dev, "pipe");
if (IS_ERR(port->pipe_rst)) {
if (PTR_ERR(port->pipe_rst) != -EPROBE_DEFER)
- dev_err(dev, "missing pipe rst property in node\n");
+ dev_err(dev, "missing pipe reset property in node\n");
return PTR_ERR(port->pipe_rst);
}

@@ -991,7 +967,7 @@ static int rockchip_pcie_prog_ob_atu(struct rockchip_pcie_port *pp,

if (region_no >= MAX_AXI_WRAPPER_REGION_NUM)
return -EINVAL;
- if ((num_pass_bits + 1) < 8)
+ if (num_pass_bits + 1 < 8)
return -EINVAL;
if (num_pass_bits > 63)
return -EINVAL;
@@ -1030,7 +1006,7 @@ static int rockchip_pcie_prog_ib_atu(struct rockchip_pcie_port *pp,

if (region_no > MAX_AXI_IB_ROOTPORT_REGION_NUM)
return -EINVAL;
- if ((num_pass_bits + 1) < MIN_AXI_ADDR_BITS_PASSED)
+ if (num_pass_bits + 1 < MIN_AXI_ADDR_BITS_PASSED)
return -EINVAL;
if (num_pass_bits > 63)
return -EINVAL;
@@ -1055,7 +1031,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
struct pci_bus *bus, *child;
struct resource_entry *win;
resource_size_t io_base;
- struct resource *busn = NULL;
struct resource *mem;
struct resource *io;
phys_addr_t io_bus_addr = 0;
@@ -1154,14 +1129,14 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
mem_bus_addr = mem->start - win->offset;
break;
case IORESOURCE_BUS:
- busn = win->res;
+ port->root_bus_nr = win->res->start;
break;
default:
continue;
}
}

- if (mem_size)
+ if (mem_size) {
for (reg_no = 0; reg_no < (mem_size >> 20); reg_no++) {
err = rockchip_pcie_prog_ob_atu(port, reg_no + 1,
AXI_WRAPPER_MEM_WRITE,
@@ -1174,6 +1149,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
goto err_vpcie;
}
}
+ }

err = rockchip_pcie_prog_ib_atu(port, 2, 32 - 1, 0x0, 0);
if (err) {
@@ -1183,7 +1159,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)

offset = mem_size >> 20;

- if (io_size)
+ if (io_size) {
for (reg_no = 0; reg_no < (io_size >> 20); reg_no++) {
err = rockchip_pcie_prog_ob_atu(port,
reg_no + 1 + offset,
@@ -1197,12 +1173,9 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
goto err_vpcie;
}
}
-
- if (busn)
- port->root_bus_nr = busn->start;
+ }

bus = pci_scan_root_bus(&pdev->dev, 0, &rockchip_pcie_ops, port, &res);
-
if (!bus) {
err = -ENOMEM;
goto err_vpcie;