From: "Lad, Prabhakar" <[email protected]>
This patch series cleans up the davinci driver.
This patch series applies on 3.10.rc7 and is boot tested
on OMAP-L138 EVM with DT and non DT cases.
Changes for v2:
1: Dropped patches which removed include files.
Lad, Prabhakar (3):
net: davinci: emac: Convert to devm_* api
net: davinci_emac: simplify the OF parser code
net: davinci_mdio: gaurd the DT code with IS_ENABLED(CONFIG_OF)
drivers/net/ethernet/ti/davinci_emac.c | 116 +++++++++-----------------------
drivers/net/ethernet/ti/davinci_mdio.c | 5 +-
2 files changed, 36 insertions(+), 85 deletions(-)
--
1.7.9.5
From: "Lad, Prabhakar" <[email protected]>
Use devm_ioremap_resource instead of devm_request_mem_region()/devm_ioremap()
and devm_request_irq() instead of request_irq().
This ensures more consistent error values and simplifies error paths.
Signed-off-by: Lad, Prabhakar <[email protected]>
---
drivers/net/ethernet/ti/davinci_emac.c | 49 ++++++--------------------------
1 file changed, 9 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 860e15d..8baf630 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1532,7 +1532,7 @@ static int emac_dev_open(struct net_device *ndev)
struct device *emac_dev = &ndev->dev;
u32 cnt;
struct resource *res;
- int q, m, ret;
+ int ret;
int i = 0;
int k = 0;
struct emac_priv *priv = netdev_priv(ndev);
@@ -1567,8 +1567,9 @@ static int emac_dev_open(struct net_device *ndev)
while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
for (i = res->start; i <= res->end; i++) {
- if (request_irq(i, emac_irq, IRQF_DISABLED,
- ndev->name, ndev))
+ if (devm_request_irq(&priv->pdev->dev, i, emac_irq,
+ IRQF_DISABLED,
+ ndev->name, ndev))
goto rollback;
}
k++;
@@ -1641,15 +1642,7 @@ static int emac_dev_open(struct net_device *ndev)
rollback:
- dev_err(emac_dev, "DaVinci EMAC: request_irq() failed");
-
- for (q = k; k >= 0; k--) {
- for (m = i; m >= res->start; m--)
- free_irq(m, ndev);
- res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k-1);
- m = res->end;
- }
-
+ dev_err(emac_dev, "DaVinci EMAC: devm_request_irq() failed");
ret = -EBUSY;
err:
pm_runtime_put(&priv->pdev->dev);
@@ -1667,9 +1660,6 @@ err:
*/
static int emac_dev_stop(struct net_device *ndev)
{
- struct resource *res;
- int i = 0;
- int irq_num;
struct emac_priv *priv = netdev_priv(ndev);
struct device *emac_dev = &ndev->dev;
@@ -1685,13 +1675,6 @@ static int emac_dev_stop(struct net_device *ndev)
if (priv->phydev)
phy_disconnect(priv->phydev);
- /* Free IRQ */
- while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, i))) {
- for (irq_num = res->start; irq_num <= res->end; irq_num++)
- free_irq(irq_num, priv->ndev);
- i++;
- }
-
if (netif_msg_drv(priv))
dev_notice(emac_dev, "DaVinci EMAC: %s stopped\n", ndev->name);
@@ -1856,7 +1839,7 @@ static int davinci_emac_probe(struct platform_device *pdev)
struct resource *res;
struct net_device *ndev;
struct emac_priv *priv;
- unsigned long size, hw_ram_addr;
+ unsigned long hw_ram_addr;
struct emac_platform_data *pdata;
struct device *emac_dev;
struct cpdma_params dma_params;
@@ -1907,25 +1890,11 @@ static int davinci_emac_probe(struct platform_device *pdev)
emac_dev = &ndev->dev;
/* Get EMAC platform data */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev,"error getting res\n");
- rc = -ENOENT;
- goto no_pdata;
- }
-
priv->emac_base_phys = res->start + pdata->ctrl_reg_offset;
- size = resource_size(res);
- if (!devm_request_mem_region(&pdev->dev, res->start,
- size, ndev->name)) {
- dev_err(&pdev->dev, "failed request_mem_region() for regs\n");
- rc = -ENXIO;
- goto no_pdata;
- }
-
- priv->remap_addr = devm_ioremap(&pdev->dev, res->start, size);
- if (!priv->remap_addr) {
+ priv->remap_addr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->remap_addr)) {
dev_err(&pdev->dev, "unable to map IO\n");
- rc = -ENOMEM;
+ rc = PTR_ERR(priv->remap_addr);
goto no_pdata;
}
priv->emac_base = priv->remap_addr + pdata->ctrl_reg_offset;
--
1.7.9.5
From: "Lad, Prabhakar" <[email protected]>
This patch cleans up the OF parser code, removes unnecessary checks
on of_property_read_*() and guards davinci_emac_of_match table with
CONFIG_OF.
Signed-off-by: Lad, Prabhakar <[email protected]>
---
drivers/net/ethernet/ti/davinci_emac.c | 67 +++++++++++---------------------
1 file changed, 23 insertions(+), 44 deletions(-)
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 8baf630..defaea0 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1754,29 +1754,22 @@ static const struct net_device_ops emac_netdev_ops = {
#endif
};
-#ifdef CONFIG_OF
-static struct emac_platform_data
- *davinci_emac_of_get_pdata(struct platform_device *pdev,
- struct emac_priv *priv)
+static struct emac_platform_data *
+davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
{
struct device_node *np;
struct emac_platform_data *pdata = NULL;
const u8 *mac_addr;
- u32 data;
- int ret;
- pdata = pdev->dev.platform_data;
- if (!pdata) {
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- goto nodata;
- }
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return pdev->dev.platform_data;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
np = pdev->dev.of_node;
- if (!np)
- goto nodata;
- else
- pdata->version = EMAC_VERSION_2;
+ pdata->version = EMAC_VERSION_2;
if (!is_valid_ether_addr(pdata->mac_addr)) {
mac_addr = of_get_mac_address(np);
@@ -1784,47 +1777,31 @@ static struct emac_platform_data
memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
}
- ret = of_property_read_u32(np, "ti,davinci-ctrl-reg-offset", &data);
- if (!ret)
- pdata->ctrl_reg_offset = data;
+ of_property_read_u32(np, "ti,davinci-ctrl-reg-offset",
+ &pdata->ctrl_reg_offset);
- ret = of_property_read_u32(np, "ti,davinci-ctrl-mod-reg-offset",
- &data);
- if (!ret)
- pdata->ctrl_mod_reg_offset = data;
+ of_property_read_u32(np, "ti,davinci-ctrl-mod-reg-offset",
+ &pdata->ctrl_mod_reg_offset);
- ret = of_property_read_u32(np, "ti,davinci-ctrl-ram-offset", &data);
- if (!ret)
- pdata->ctrl_ram_offset = data;
+ of_property_read_u32(np, "ti,davinci-ctrl-ram-offset",
+ &pdata->ctrl_ram_offset);
- ret = of_property_read_u32(np, "ti,davinci-ctrl-ram-size", &data);
- if (!ret)
- pdata->ctrl_ram_size = data;
+ of_property_read_u32(np, "ti,davinci-ctrl-ram-size",
+ &pdata->ctrl_ram_size);
- ret = of_property_read_u32(np, "ti,davinci-rmii-en", &data);
- if (!ret)
- pdata->rmii_en = data;
+ of_property_read_u8(np, "ti,davinci-rmii-en", &pdata->rmii_en);
- ret = of_property_read_u32(np, "ti,davinci-no-bd-ram", &data);
- if (!ret)
- pdata->no_bd_ram = data;
+ pdata->no_bd_ram = of_property_read_bool(np, "ti,davinci-no-bd-ram");
priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
if (!priv->phy_node)
pdata->phy_id = "";
pdev->dev.platform_data = pdata;
-nodata:
+
return pdata;
}
-#else
-static struct emac_platform_data
- *davinci_emac_of_get_pdata(struct platform_device *pdev,
- struct emac_priv *priv)
-{
- return pdev->dev.platform_data;
-}
-#endif
+
/**
* davinci_emac_probe - EMAC device probe
* @pdev: The DaVinci EMAC device that we are removing
@@ -2047,11 +2024,13 @@ static const struct dev_pm_ops davinci_emac_pm_ops = {
.resume = davinci_emac_resume,
};
+#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id davinci_emac_of_match[] = {
{.compatible = "ti,davinci-dm6467-emac", },
{},
};
MODULE_DEVICE_TABLE(of, davinci_emac_of_match);
+#endif
/* davinci_emac_driver: EMAC platform driver structure */
static struct platform_driver davinci_emac_driver = {
--
1.7.9.5
From: "Lad, Prabhakar" <[email protected]>
guard the davinci_mdio_of_mtable table and davinci_mdio_probe_dt()
with CONFIG_OF.
Signed-off-by: Lad, Prabhakar <[email protected]>
---
drivers/net/ethernet/ti/davinci_mdio.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index c47f0db..dac6f58 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -291,6 +291,7 @@ static int davinci_mdio_write(struct mii_bus *bus, int phy_id,
return 0;
}
+#if IS_ENABLED(CONFIG_OF)
static int davinci_mdio_probe_dt(struct mdio_platform_data *data,
struct platform_device *pdev)
{
@@ -308,7 +309,7 @@ static int davinci_mdio_probe_dt(struct mdio_platform_data *data,
return 0;
}
-
+#endif
static int davinci_mdio_probe(struct platform_device *pdev)
{
@@ -477,11 +478,13 @@ static const struct dev_pm_ops davinci_mdio_pm_ops = {
.resume_early = davinci_mdio_resume,
};
+#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id davinci_mdio_of_mtable[] = {
{ .compatible = "ti,davinci_mdio", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, davinci_mdio_of_mtable);
+#endif
static struct platform_driver davinci_mdio_driver = {
.driver = {
--
1.7.9.5
From: Prabhakar Lad <[email protected]>
Date: Tue, 25 Jun 2013 21:24:50 +0530
> From: "Lad, Prabhakar" <[email protected]>
>
> This patch series cleans up the davinci driver.
>
> This patch series applies on 3.10.rc7 and is boot tested
> on OMAP-L138 EVM with DT and non DT cases.
Series applied, thanks.