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powerpc/i2c: Convert i2c-mpc into an of_platform driver

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Convert i2c-mpc to an of_platform driver. Utilize the code in
drivers/of-i2c.c to make i2c modules dynamically loadable by the
device tree.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Jon Smirl
2008-06-30 19:01:26 -04:00
committed by Grant Likely
parent 6eb9d32298
commit 0d1cde2358
2 changed files with 60 additions and 177 deletions
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133
arch/powerpc/sysdev/fsl_soc.c
View File

@ -414,139 +414,6 @@ err:
arch_initcall(gfar_of_init);
#ifdef CONFIG_I2C_BOARDINFO
#include <linux/i2c.h>
struct i2c_driver_device {
char *of_device;
char *i2c_type;
};
static struct i2c_driver_device i2c_devices[] __initdata = {
{"ricoh,rs5c372a", "rs5c372a"},
{"ricoh,rs5c372b", "rs5c372b"},
{"ricoh,rv5c386", "rv5c386"},
{"ricoh,rv5c387a", "rv5c387a"},
{"dallas,ds1307", "ds1307"},
{"dallas,ds1337", "ds1337"},
{"dallas,ds1338", "ds1338"},
{"dallas,ds1339", "ds1339"},
{"dallas,ds1340", "ds1340"},
{"stm,m41t00", "m41t00"},
{"dallas,ds1374", "ds1374"},
{"cirrus,cs4270", "cs4270"},
};
static int __init of_find_i2c_driver(struct device_node *node,
struct i2c_board_info *info)
{
int i;
for (i = 0; i < ARRAY_SIZE(i2c_devices); i++) {
if (!of_device_is_compatible(node, i2c_devices[i].of_device))
continue;
if (strlcpy(info->type, i2c_devices[i].i2c_type,
I2C_NAME_SIZE) >= I2C_NAME_SIZE)
return -ENOMEM;
return 0;
}
pr_warning("fsl_soc.c: unrecognized i2c node %s\n",
(const char *) of_get_property(node, "compatible", NULL));
return -ENODEV;
}
static void __init of_register_i2c_devices(struct device_node *adap_node,
int bus_num)
{
struct device_node *node = NULL;
while ((node = of_get_next_child(adap_node, node))) {
struct i2c_board_info info = {};
const u32 *addr;
int len;
addr = of_get_property(node, "reg", &len);
if (!addr || len < sizeof(int) || *addr > (1 << 10) - 1) {
printk(KERN_WARNING "fsl_soc.c: invalid i2c device entry\n");
continue;
}
info.irq = irq_of_parse_and_map(node, 0);
if (info.irq == NO_IRQ)
info.irq = -1;
if (of_find_i2c_driver(node, &info) < 0)
continue;
info.addr = *addr;
i2c_register_board_info(bus_num, &info, 1);
}
}
static int __init fsl_i2c_of_init(void)
{
struct device_node *np;
unsigned int i = 0;
struct platform_device *i2c_dev;
int ret;
for_each_compatible_node(np, NULL, "fsl-i2c") {
struct resource r[2];
struct fsl_i2c_platform_data i2c_data;
const unsigned char *flags = NULL;
int idx;
const u32 *iprop;
memset(&r, 0, sizeof(r));
memset(&i2c_data, 0, sizeof(i2c_data));
ret = of_address_to_resource(np, 0, &r[0]);
if (ret)
goto err;
of_irq_to_resource(np, 0, &r[1]);
iprop = of_get_property(np, "cell-index", NULL);
idx = iprop ? *iprop : i;
i2c_dev = platform_device_register_simple("fsl-i2c", idx, r, 2);
if (IS_ERR(i2c_dev)) {
ret = PTR_ERR(i2c_dev);
goto err;
}
i2c_data.device_flags = 0;
flags = of_get_property(np, "dfsrr", NULL);
if (flags)
i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;
flags = of_get_property(np, "fsl5200-clocking", NULL);
if (flags)
i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;
ret =
platform_device_add_data(i2c_dev, &i2c_data,
sizeof(struct
fsl_i2c_platform_data));
if (ret)
goto unreg;
of_register_i2c_devices(np, idx);
i++;
}
return 0;
unreg:
platform_device_unregister(i2c_dev);
err:
return ret;
}
arch_initcall(fsl_i2c_of_init);
#endif
#ifdef CONFIG_PPC_83xx
static int __init mpc83xx_wdt_init(void)