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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/mv643xx.h>
#include <linux/platform_device.h>
#include <asm/prom.h>
/*
* These functions provide the necessary setup for the mv64x60 drivers.
* These drivers are unusual in that they work on both the MIPS and PowerPC
* architectures. Because of that, the drivers do not support the normal
* PowerPC of_platform_bus_type. They support platform_bus_type instead.
*/
/*
* 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, "block-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 */
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;
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;
}
static int __init mv64x60_device_setup(void)
{
struct device_node *np = NULL;
int id;
int err;
for (id = 0;
(np = of_find_compatible_node(np, "serial", "marvell,mpsc")); id++)
if ((err = mv64x60_mpsc_device_setup(np, id)))
goto error;
return 0;
error:
of_node_put(np);
return err;
}
arch_initcall(mv64x60_device_setup);
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