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path: root/drivers/net/ethernet/freescale/fec_main.c
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Diffstat (limited to 'drivers/net/ethernet/freescale/fec_main.c')
-rw-r--r--drivers/net/ethernet/freescale/fec_main.c182
1 files changed, 114 insertions, 68 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 2341597408d1..c73e25f8995e 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -56,12 +56,12 @@
#include <linux/fec.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/of_gpio.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include <linux/regulator/consumer.h>
#include <linux/if_vlan.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/gpio/consumer.h>
#include <linux/prefetch.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
@@ -1987,47 +1987,74 @@ static int fec_enet_mdio_wait(struct fec_enet_private *fep)
return ret;
}
-static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+static int fec_enet_mdio_read_c22(struct mii_bus *bus, int mii_id, int regnum)
{
struct fec_enet_private *fep = bus->priv;
struct device *dev = &fep->pdev->dev;
int ret = 0, frame_start, frame_addr, frame_op;
- bool is_c45 = !!(regnum & MII_ADDR_C45);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;
- if (is_c45) {
- frame_start = FEC_MMFR_ST_C45;
+ /* C22 read */
+ frame_op = FEC_MMFR_OP_READ;
+ frame_start = FEC_MMFR_ST;
+ frame_addr = regnum;
- /* write address */
- frame_addr = (regnum >> 16);
- writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | (regnum & 0xFFFF),
- fep->hwp + FEC_MII_DATA);
+ /* start a read op */
+ writel(frame_start | frame_op |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
+ FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
- /* wait for end of transfer */
- ret = fec_enet_mdio_wait(fep);
- if (ret) {
- netdev_err(fep->netdev, "MDIO address write timeout\n");
- goto out;
- }
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO read timeout\n");
+ goto out;
+ }
- frame_op = FEC_MMFR_OP_READ_C45;
+ ret = FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
- } else {
- /* C22 read */
- frame_op = FEC_MMFR_OP_READ;
- frame_start = FEC_MMFR_ST;
- frame_addr = regnum;
+out:
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return ret;
+}
+
+static int fec_enet_mdio_read_c45(struct mii_bus *bus, int mii_id,
+ int devad, int regnum)
+{
+ struct fec_enet_private *fep = bus->priv;
+ struct device *dev = &fep->pdev->dev;
+ int ret = 0, frame_start, frame_op;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ frame_start = FEC_MMFR_ST_C45;
+
+ /* write address */
+ writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | (regnum & 0xFFFF),
+ fep->hwp + FEC_MII_DATA);
+
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO address write timeout\n");
+ goto out;
}
+ frame_op = FEC_MMFR_OP_READ_C45;
+
/* start a read op */
writel(frame_start | frame_op |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
/* wait for end of transfer */
ret = fec_enet_mdio_wait(fep);
@@ -2045,45 +2072,69 @@ out:
return ret;
}
-static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
- u16 value)
+static int fec_enet_mdio_write_c22(struct mii_bus *bus, int mii_id, int regnum,
+ u16 value)
{
struct fec_enet_private *fep = bus->priv;
struct device *dev = &fep->pdev->dev;
int ret, frame_start, frame_addr;
- bool is_c45 = !!(regnum & MII_ADDR_C45);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;
- if (is_c45) {
- frame_start = FEC_MMFR_ST_C45;
+ /* C22 write */
+ frame_start = FEC_MMFR_ST;
+ frame_addr = regnum;
+
+ /* start a write op */
+ writel(frame_start | FEC_MMFR_OP_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
+ FEC_MMFR_TA | FEC_MMFR_DATA(value),
+ fep->hwp + FEC_MII_DATA);
+
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret)
+ netdev_err(fep->netdev, "MDIO write timeout\n");
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return ret;
+}
+
+static int fec_enet_mdio_write_c45(struct mii_bus *bus, int mii_id,
+ int devad, int regnum, u16 value)
+{
+ struct fec_enet_private *fep = bus->priv;
+ struct device *dev = &fep->pdev->dev;
+ int ret, frame_start;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0)
+ return ret;
+
+ frame_start = FEC_MMFR_ST_C45;
- /* write address */
- frame_addr = (regnum >> 16);
- writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | (regnum & 0xFFFF),
- fep->hwp + FEC_MII_DATA);
+ /* write address */
+ writel(frame_start | FEC_MMFR_OP_ADDR_WRITE |
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | (regnum & 0xFFFF),
+ fep->hwp + FEC_MII_DATA);
- /* wait for end of transfer */
- ret = fec_enet_mdio_wait(fep);
- if (ret) {
- netdev_err(fep->netdev, "MDIO address write timeout\n");
- goto out;
- }
- } else {
- /* C22 write */
- frame_start = FEC_MMFR_ST;
- frame_addr = regnum;
+ /* wait for end of transfer */
+ ret = fec_enet_mdio_wait(fep);
+ if (ret) {
+ netdev_err(fep->netdev, "MDIO address write timeout\n");
+ goto out;
}
/* start a write op */
writel(frame_start | FEC_MMFR_OP_WRITE |
- FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) |
- FEC_MMFR_TA | FEC_MMFR_DATA(value),
- fep->hwp + FEC_MII_DATA);
+ FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(devad) |
+ FEC_MMFR_TA | FEC_MMFR_DATA(value),
+ fep->hwp + FEC_MII_DATA);
/* wait for end of transfer */
ret = fec_enet_mdio_wait(fep);
@@ -2381,8 +2432,10 @@ static int fec_enet_mii_init(struct platform_device *pdev)
}
fep->mii_bus->name = "fec_enet_mii_bus";
- fep->mii_bus->read = fec_enet_mdio_read;
- fep->mii_bus->write = fec_enet_mdio_write;
+ fep->mii_bus->read = fec_enet_mdio_read_c22;
+ fep->mii_bus->write = fec_enet_mdio_write_c22;
+ fep->mii_bus->read_c45 = fec_enet_mdio_read_c45;
+ fep->mii_bus->write_c45 = fec_enet_mdio_write_c45;
snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
pdev->name, fep->dev_id + 1);
fep->mii_bus->priv = fep;
@@ -3982,10 +4035,10 @@ free_queue_mem:
#ifdef CONFIG_OF
static int fec_reset_phy(struct platform_device *pdev)
{
- int err, phy_reset;
- bool active_high = false;
+ struct gpio_desc *phy_reset;
int msec = 1, phy_post_delay = 0;
struct device_node *np = pdev->dev.of_node;
+ int err;
if (!np)
return 0;
@@ -3995,33 +4048,26 @@ static int fec_reset_phy(struct platform_device *pdev)
if (!err && msec > 1000)
msec = 1;
- phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0);
- if (phy_reset == -EPROBE_DEFER)
- return phy_reset;
- else if (!gpio_is_valid(phy_reset))
- return 0;
-
err = of_property_read_u32(np, "phy-reset-post-delay", &phy_post_delay);
/* valid reset duration should be less than 1s */
if (!err && phy_post_delay > 1000)
return -EINVAL;
- active_high = of_property_read_bool(np, "phy-reset-active-high");
+ phy_reset = devm_gpiod_get_optional(&pdev->dev, "phy-reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(phy_reset))
+ return dev_err_probe(&pdev->dev, PTR_ERR(phy_reset),
+ "failed to get phy-reset-gpios\n");
- err = devm_gpio_request_one(&pdev->dev, phy_reset,
- active_high ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
- "phy-reset");
- if (err) {
- dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err);
- return err;
- }
+ if (!phy_reset)
+ return 0;
if (msec > 20)
msleep(msec);
else
usleep_range(msec * 1000, msec * 1000 + 1000);
- gpio_set_value_cansleep(phy_reset, !active_high);
+ gpiod_set_value_cansleep(phy_reset, 0);
if (!phy_post_delay)
return 0;
generated by cgit (git 2.34.1) at 2024-05-28 17:39:59 +0000