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Merge branch 'cpsw_macid' 

Tony Lindgren says:

====================
Changes to cpsw and davinci_emac for getting MAC address

Here are a few patches to add common code for cpsw and davinci_emac for
getting the MAC address. Looks like we can also now add code to get the
MAC address on 3517 but in a slightly different way.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-01-30 17:42:07 -08:00
parent 4c72c53be5 f276c0ce5d
commit 055470d2a7
6 changed files with 116 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/boot/dts/am3517.dtsi
View File

@ -31,6 +31,7 @@ davinci_emac: ethernet@0x5c000000 {
status = "disabled";
reg = <0x5c000000 0x30000>;
interrupts = <67 68 69 70>;
syscon = <&omap3_scm_general>;
ti,davinci-ctrl-reg-offset = <0x10000>;
ti,davinci-ctrl-mod-reg-offset = <0>;
ti,davinci-ctrl-ram-offset = <0x20000>;

3
drivers/net/ethernet/ti/Makefile
View File

@ -2,6 +2,9 @@
# Makefile for the TI network device drivers.
#
obj-$(CONFIG_TI_CPSW) += cpsw-common.o
obj-$(CONFIG_TI_DAVINCI_EMAC) += cpsw-common.o
obj-$(CONFIG_TLAN) += tlan.o
obj-$(CONFIG_CPMAC) += cpmac.o
obj-$(CONFIG_TI_DAVINCI_EMAC) += davinci_emac.o

53
drivers/net/ethernet/ti/cpsw-common.c Normal file
View File

@ -0,0 +1,53 @@
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#define AM33XX_CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id))
#define AM33XX_CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4)
int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave,
u8 *mac_addr)
{
u32 macid_lo;
u32 macid_hi;
struct regmap *syscon;
syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
if (IS_ERR(syscon)) {
if (PTR_ERR(syscon) == -ENODEV)
return 0;
return PTR_ERR(syscon);
}
regmap_read(syscon, AM33XX_CTRL_MAC_LO_REG(offset, slave),
&macid_lo);
regmap_read(syscon, AM33XX_CTRL_MAC_HI_REG(offset, slave),
&macid_hi);
mac_addr[5] = (macid_lo >> 8) & 0xff;
mac_addr[4] = macid_lo & 0xff;
mac_addr[3] = (macid_hi >> 24) & 0xff;
mac_addr[2] = (macid_hi >> 16) & 0xff;
mac_addr[1] = (macid_hi >> 8) & 0xff;
mac_addr[0] = macid_hi & 0xff;
return 0;
}
EXPORT_SYMBOL_GPL(cpsw_am33xx_cm_get_macid);
MODULE_LICENSE("GPL");

35
drivers/net/ethernet/ti/cpsw.c
View File

@ -33,8 +33,6 @@
#include <linux/of_net.h>
#include <linux/of_device.h>
#include <linux/if_vlan.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/pinctrl/consumer.h>
@ -1936,36 +1934,6 @@ static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
slave->port_vlan = data->dual_emac_res_vlan;
}
#define AM33XX_CTRL_MAC_LO_REG(id) (0x630 + 0x8 * id)
#define AM33XX_CTRL_MAC_HI_REG(id) (0x630 + 0x8 * id + 0x4)
static int cpsw_am33xx_cm_get_macid(struct device *dev, int slave,
u8 *mac_addr)
{
u32 macid_lo;
u32 macid_hi;
struct regmap *syscon;
syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
if (IS_ERR(syscon)) {
if (PTR_ERR(syscon) == -ENODEV)
return 0;
return PTR_ERR(syscon);
}
regmap_read(syscon, AM33XX_CTRL_MAC_LO_REG(slave), &macid_lo);
regmap_read(syscon, AM33XX_CTRL_MAC_HI_REG(slave), &macid_hi);
mac_addr[5] = (macid_lo >> 8) & 0xff;
mac_addr[4] = macid_lo & 0xff;
mac_addr[3] = (macid_hi >> 24) & 0xff;
mac_addr[2] = (macid_hi >> 16) & 0xff;
mac_addr[1] = (macid_hi >> 8) & 0xff;
mac_addr[0] = macid_hi & 0xff;
return 0;
}
static int cpsw_probe_dt(struct cpsw_platform_data *data,
struct platform_device *pdev)
{
@ -2090,7 +2058,8 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
} else {
if (of_machine_is_compatible("ti,am33xx")) {
ret = cpsw_am33xx_cm_get_macid(&pdev->dev, i,
ret = cpsw_am33xx_cm_get_macid(&pdev->dev,
0x630, i,
slave_data->mac_addr);
if (ret)
return ret;

2
drivers/net/ethernet/ti/cpsw.h
View File

@ -41,5 +41,7 @@ struct cpsw_platform_data {
};
void cpsw_phy_sel(struct device *dev, phy_interface_t phy_mode, int slave);
int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave,
u8 *mac_addr);
#endif /* __CPSW_H__ */

56
drivers/net/ethernet/ti/davinci_emac.c
View File

@ -52,6 +52,7 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/semaphore.h>
#include <linux/phy.h>
#include <linux/bitops.h>
@ -65,10 +66,12 @@
#include <linux/of_mdio.h>
#include <linux/of_irq.h>
#include <linux/of_net.h>
#include <linux/mfd/syscon.h>
#include <asm/irq.h>
#include <asm/page.h>
#include "cpsw.h"
#include "davinci_cpdma.h"
static int debug_level;
@ -1838,7 +1841,7 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
if (!is_valid_ether_addr(pdata->mac_addr)) {
mac_addr = of_get_mac_address(np);
if (mac_addr)
memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
ether_addr_copy(pdata->mac_addr, mac_addr);
}
of_property_read_u32(np, "ti,davinci-ctrl-reg-offset",
@ -1879,6 +1882,53 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
return pdata;
}
static int davinci_emac_3517_get_macid(struct device *dev, u16 offset,
int slave, u8 *mac_addr)
{
u32 macid_lsb;
u32 macid_msb;
struct regmap *syscon;
syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
if (IS_ERR(syscon)) {
if (PTR_ERR(syscon) == -ENODEV)
return 0;
return PTR_ERR(syscon);
}
regmap_read(syscon, offset, &macid_lsb);
regmap_read(syscon, offset + 4, &macid_msb);
mac_addr[0] = (macid_msb >> 16) & 0xff;
mac_addr[1] = (macid_msb >> 8) & 0xff;
mac_addr[2] = macid_msb & 0xff;
mac_addr[3] = (macid_lsb >> 16) & 0xff;
mac_addr[4] = (macid_lsb >> 8) & 0xff;
mac_addr[5] = macid_lsb & 0xff;
return 0;
}
static int davinci_emac_try_get_mac(struct platform_device *pdev,
int instance, u8 *mac_addr)
{
int error = -EINVAL;
if (!pdev->dev.of_node)
return error;
if (of_device_is_compatible(pdev->dev.of_node, "ti,am3517-emac"))
error = davinci_emac_3517_get_macid(&pdev->dev, 0x110,
0, mac_addr);
else if (of_device_is_compatible(pdev->dev.of_node,
"ti,dm816-emac"))
error = cpsw_am33xx_cm_get_macid(&pdev->dev, 0x30,
instance,
mac_addr);
return error;
}
/**
* davinci_emac_probe - EMAC device probe
* @pdev: The DaVinci EMAC device that we are removing
@ -2009,6 +2059,10 @@ static int davinci_emac_probe(struct platform_device *pdev)
}
ndev->irq = res->start;
rc = davinci_emac_try_get_mac(pdev, res_ctrl ? 0 : 1, priv->mac_addr);
if (!rc)
ether_addr_copy(ndev->dev_addr, priv->mac_addr);
if (!is_valid_ether_addr(priv->mac_addr)) {
/* Use random MAC if none passed */
eth_hw_addr_random(ndev);