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linux/arch/powerpc/sysdev/mv64x60_dev.c
Florian Fainelli c3a07134e6 mv643xx_eth: convert to use the Marvell Orion MDIO driver 
This patch converts the Marvell MV643XX ethernet driver to use the
Marvell Orion MDIO driver. As a result, PowerPC and ARM platforms
registering the Marvell MV643XX ethernet driver are also updated to
register a Marvell Orion MDIO driver. This driver voluntarily overlaps
with the Marvell Ethernet shared registers because it will use a subset
of this shared register (shared_base + 0x4 to shared_base + 0x84). The
Ethernet driver is also updated to look up for a PHY device using the
Orion MDIO bus driver.

For ARM and PowerPC we register a single instance of the "mvmdio" driver
in the system like it used to be done with the use of the "shared_smi"
platform_data cookie on ARM.

Note that it is safe to register the mvmdio driver only for the "ge00"
instance of the driver because this "ge00" interface is guaranteed to
always be explicitely registered by consumers of
arch/arm/plat-orion/common.c and other instances (ge01, ge10 and ge11)
were all pointing their shared_smi to ge00. For PowerPC the in-tree
Device Tree Source files mention only one MV643XX ethernet MAC instance
so the MDIO bus driver is registered only when id == 0.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-22 10:25:15 -04:00

536 lines
11 KiB
C
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/*
* Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
*
* Author: Dale Farnsworth <dale@farnsworth.org>
*
* 2007 (c) MontaVista, Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/mv643xx.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h>
#include <linux/of_net.h>
#include <linux/dma-mapping.h>
#include <asm/prom.h>
/* These functions provide the necessary setup for the mv64x60 drivers. */
static struct of_device_id __initdata of_mv64x60_devices[] = {
{ .compatible = "marvell,mv64306-devctrl", },
{}
};
/*
* Create MPSC platform devices
*/
static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
{
struct platform_device *pdev;
struct resource r[2];
struct mpsc_shared_pdata pdata;
const phandle *ph;
struct device_node *mpscrouting, *mpscintr;
int err;
ph = of_get_property(np, "mpscrouting", NULL);
mpscrouting = of_find_node_by_phandle(*ph);
if (!mpscrouting)
return -ENODEV;
err = of_address_to_resource(mpscrouting, 0, &r[0]);
of_node_put(mpscrouting);
if (err)
return err;
ph = of_get_property(np, "mpscintr", NULL);
mpscintr = of_find_node_by_phandle(*ph);
if (!mpscintr)
return -ENODEV;
err = of_address_to_resource(mpscintr, 0, &r[1]);
of_node_put(mpscintr);
if (err)
return err;
memset(&pdata, 0, sizeof(pdata));
pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
if (!pdev)
return -ENOMEM;
err = platform_device_add_resources(pdev, r, 2);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
{
struct resource r[5];
struct mpsc_pdata pdata;
struct platform_device *pdev;
const unsigned int *prop;
const phandle *ph;
struct device_node *sdma, *brg;
int err;
int port_number;
/* only register the shared platform device the first time through */
if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
return err;
memset(r, 0, sizeof(r));
err = of_address_to_resource(np, 0, &r[0]);
if (err)
return err;
of_irq_to_resource(np, 0, &r[4]);
ph = of_get_property(np, "sdma", NULL);
sdma = of_find_node_by_phandle(*ph);
if (!sdma)
return -ENODEV;
of_irq_to_resource(sdma, 0, &r[3]);
err = of_address_to_resource(sdma, 0, &r[1]);
of_node_put(sdma);
if (err)
return err;
ph = of_get_property(np, "brg", NULL);
brg = of_find_node_by_phandle(*ph);
if (!brg)
return -ENODEV;
err = of_address_to_resource(brg, 0, &r[2]);
of_node_put(brg);
if (err)
return err;
prop = of_get_property(np, "cell-index", NULL);
if (!prop)
return -ENODEV;
port_number = *(int *)prop;
memset(&pdata, 0, sizeof(pdata));
pdata.cache_mgmt = 1; /* All current revs need this set */
pdata.max_idle = 40; /* default */
prop = of_get_property(np, "max_idle", NULL);
if (prop)
pdata.max_idle = *prop;
prop = of_get_property(brg, "current-speed", NULL);
if (prop)
pdata.default_baud = *prop;
/* Default is 8 bits, no parity, no flow control */
pdata.default_bits = 8;
pdata.default_parity = 'n';
pdata.default_flow = 'n';
prop = of_get_property(np, "chr_1", NULL);
if (prop)
pdata.chr_1_val = *prop;
prop = of_get_property(np, "chr_2", NULL);
if (prop)
pdata.chr_2_val = *prop;
prop = of_get_property(np, "chr_10", NULL);
if (prop)
pdata.chr_10_val = *prop;
prop = of_get_property(np, "mpcr", NULL);
if (prop)
pdata.mpcr_val = *prop;
prop = of_get_property(brg, "bcr", NULL);
if (prop)
pdata.bcr_val = *prop;
pdata.brg_can_tune = 1; /* All current revs need this set */
prop = of_get_property(brg, "clock-src", NULL);
if (prop)
pdata.brg_clk_src = *prop;
prop = of_get_property(brg, "clock-frequency", NULL);
if (prop)
pdata.brg_clk_freq = *prop;
pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
if (!pdev)
return -ENOMEM;
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
err = platform_device_add_resources(pdev, r, 5);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
/*
* Create mv64x60_eth platform devices
*/
static struct platform_device * __init mv64x60_eth_register_shared_pdev(
struct device_node *np, int id)
{
struct platform_device *pdev;
struct resource r[2];
int err;
err = of_address_to_resource(np, 0, &r[0]);
if (err)
return ERR_PTR(err);
/* register an orion mdio bus driver */
r[1].start = r[0].start + 0x4;
r[1].end = r[0].start + 0x84 - 1;
r[1].flags = IORESOURCE_MEM;
if (id == 0) {
pdev = platform_device_register_simple("orion-mdio", -1, &r[1], 1);
if (!pdev)
return pdev;
}
pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
&r[0], 1);
return pdev;
}
static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
struct platform_device *shared_pdev)
{
struct resource r[1];
struct mv643xx_eth_platform_data pdata;
struct platform_device *pdev;
struct device_node *phy;
const u8 *mac_addr;
const int *prop;
const phandle *ph;
int err;
memset(r, 0, sizeof(r));
of_irq_to_resource(np, 0, &r[0]);
memset(&pdata, 0, sizeof(pdata));
pdata.shared = shared_pdev;
prop = of_get_property(np, "reg", NULL);
if (!prop)
return -ENODEV;
pdata.port_number = *prop;
mac_addr = of_get_mac_address(np);
if (mac_addr)
memcpy(pdata.mac_addr, mac_addr, 6);
prop = of_get_property(np, "speed", NULL);
if (prop)
pdata.speed = *prop;
prop = of_get_property(np, "tx_queue_size", NULL);
if (prop)
pdata.tx_queue_size = *prop;
prop = of_get_property(np, "rx_queue_size", NULL);
if (prop)
pdata.rx_queue_size = *prop;
prop = of_get_property(np, "tx_sram_addr", NULL);
if (prop)
pdata.tx_sram_addr = *prop;
prop = of_get_property(np, "tx_sram_size", NULL);
if (prop)
pdata.tx_sram_size = *prop;
prop = of_get_property(np, "rx_sram_addr", NULL);
if (prop)
pdata.rx_sram_addr = *prop;
prop = of_get_property(np, "rx_sram_size", NULL);
if (prop)
pdata.rx_sram_size = *prop;
ph = of_get_property(np, "phy", NULL);
if (!ph)
return -ENODEV;
phy = of_find_node_by_phandle(*ph);
if (phy == NULL)
return -ENODEV;
prop = of_get_property(phy, "reg", NULL);
if (prop)
pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
of_node_put(phy);
pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
if (!pdev)
return -ENOMEM;
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
err = platform_device_add_resources(pdev, r, 1);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
/*
* Create mv64x60_i2c platform devices
*/
static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
{
struct resource r[2];
struct platform_device *pdev;
struct mv64xxx_i2c_pdata pdata;
const unsigned int *prop;
int err;
memset(r, 0, sizeof(r));
err = of_address_to_resource(np, 0, &r[0]);
if (err)
return err;
of_irq_to_resource(np, 0, &r[1]);
memset(&pdata, 0, sizeof(pdata));
pdata.freq_m = 8; /* default */
prop = of_get_property(np, "freq_m", NULL);
if (prop)
pdata.freq_m = *prop;
pdata.freq_n = 3; /* default */
prop = of_get_property(np, "freq_n", NULL);
if (prop)
pdata.freq_n = *prop;
pdata.timeout = 1000; /* default: 1 second */
pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
if (!pdev)
return -ENOMEM;
err = platform_device_add_resources(pdev, r, 2);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
/*
* Create mv64x60_wdt platform devices
*/
static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
{
struct resource r;
struct platform_device *pdev;
struct mv64x60_wdt_pdata pdata;
const unsigned int *prop;
int err;
err = of_address_to_resource(np, 0, &r);
if (err)
return err;
memset(&pdata, 0, sizeof(pdata));
pdata.timeout = 10; /* Default: 10 seconds */
np = of_get_parent(np);
if (!np)
return -ENODEV;
prop = of_get_property(np, "clock-frequency", NULL);
of_node_put(np);
if (!prop)
return -ENODEV;
pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
if (!pdev)
return -ENOMEM;
err = platform_device_add_resources(pdev, &r, 1);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
static int __init mv64x60_device_setup(void)
{
struct device_node *np, *np2;
struct platform_device *pdev;
int id, id2;
int err;
id = 0;
for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
err = mv64x60_mpsc_device_setup(np, id++);
if (err)
printk(KERN_ERR "Failed to initialize MV64x60 "
"serial device %s: error %d.\n",
np->full_name, err);
}
id = 0;
id2 = 0;
for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
pdev = mv64x60_eth_register_shared_pdev(np, id++);
if (IS_ERR(pdev)) {
err = PTR_ERR(pdev);
printk(KERN_ERR "Failed to initialize MV64x60 "
"network block %s: error %d.\n",
np->full_name, err);
continue;
}
for_each_child_of_node(np, np2) {
if (!of_device_is_compatible(np2,
"marvell,mv64360-eth"))
continue;
err = mv64x60_eth_device_setup(np2, id2++, pdev);
if (err)
printk(KERN_ERR "Failed to initialize "
"MV64x60 network device %s: "
"error %d.\n",
np2->full_name, err);
}
}
id = 0;
for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
err = mv64x60_i2c_device_setup(np, id++);
if (err)
printk(KERN_ERR "Failed to initialize MV64x60 I2C "
"bus %s: error %d.\n",
np->full_name, err);
}
/* support up to one watchdog timer */
np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
if (np) {
if ((err = mv64x60_wdt_device_setup(np, id)))
printk(KERN_ERR "Failed to initialize MV64x60 "
"Watchdog %s: error %d.\n",
np->full_name, err);
of_node_put(np);
}
/* Now add every node that is on the device bus */
for_each_compatible_node(np, NULL, "marvell,mv64360")
of_platform_bus_probe(np, of_mv64x60_devices, NULL);
return 0;
}
arch_initcall(mv64x60_device_setup);
static int __init mv64x60_add_mpsc_console(void)
{
struct device_node *np = NULL;
const char *prop;
prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
if (prop == NULL)
goto not_mpsc;
np = of_find_node_by_path(prop);
if (!np)
goto not_mpsc;
if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
goto not_mpsc;
prop = of_get_property(np, "cell-index", NULL);
if (!prop)
goto not_mpsc;
add_preferred_console("ttyMM", *(int *)prop, NULL);
not_mpsc:
return 0;
}
console_initcall(mv64x60_add_mpsc_console);
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