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kernel-ark/arch/powerpc/sysdev/mv64x60_dev.c
Uwe Kleine-König ce6d73c94d powerpc: make of_device_ids const 
of_device_ids (i.e. compatible strings and the respective data) are not
supposed to change at runtime. All functions working with of_device_ids
provided by <linux/of.h> work with const of_device_ids. This allows to
mark all struct of_device_id const, too.

While touching these line also put the __init annotation at the right
position where necessary.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-25 23:14:46 +10:00

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 const struct of_device_id of_mv64x60_devices[] __initconst = {
{ .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 (IS_ERR(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, NULL, "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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