[POWERPC] Create Marvell mv64x60 I2C platform_data

This patch creates platform_device entries for the Marvell mv64x60
I2C ports, based on information contained in device tree.

This driver (like the other mv64x60 drivers) are unusual in that it
works 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.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c
index 0ccc495340b..4b0a9c88eeb 100644
--- a/arch/powerpc/sysdev/mv64x60_dev.c
+++ b/arch/powerpc/sysdev/mv64x60_dev.c
@@ -323,6 +323,72 @@ error:
 	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));
+
+	prop = of_get_property(np, "freq_m", NULL);
+	if (!prop)
+		return -ENODEV;
+	pdata.freq_m = *prop;
+
+	prop = of_get_property(np, "freq_n", NULL);
+	if (!prop)
+		return -ENODEV;
+	pdata.freq_n = *prop;
+
+	prop = of_get_property(np, "timeout", NULL);
+	if (prop)
+		pdata.timeout = *prop;
+	else
+		pdata.timeout = 1000;	/* 1 second */
+
+	prop = of_get_property(np, "retries", NULL);
+	if (prop)
+		pdata.retries = *prop;
+	else
+		pdata.retries = 1;
+
+	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;
+}
+
 static int __init mv64x60_device_setup(void)
 {
 	struct device_node *np = NULL;
@@ -341,6 +407,12 @@ static int __init mv64x60_device_setup(void)
 		if ((err = mv64x60_eth_device_setup(np, id)))
 			goto error;
 
+	for (id = 0;
+	     (np = of_find_compatible_node(np, "i2c", "marvell,mv64x60-i2c"));
+	     id++)
+		if ((err = mv64x60_i2c_device_setup(np, id)))
+			goto error;
+
 	return 0;
 
 error: