[PATCH 1/4] powerpc/fsl_soc.c: prepare for addition of mpc5121 USB code
Anatolij Gustschin
agust at denx.de
Wed Apr 28 02:11:35 EST 2010
Factor out common code for registering a FSL EHCI platform
device into new fsl_usb2_register_device() function. This
is done to avoid code duplication while adding code for
instantiating of MPC5121 dual role USB platform devices.
Then, the subsequent patch can use
for_each_compatible_node(np, NULL, "fsl,mpc5121-usb2-dr") {
...
fsl_usb2_register_device();
}
Signed-off-by: Anatolij Gustschin <agust at denx.de>
Cc: Kumar Gala <galak at kernel.crashing.org>
Cc: Grant Likely <grant.likely at secretlab.ca>
---
arch/powerpc/sysdev/fsl_soc.c | 231 +++++++++++++++++++---------------------
1 files changed, 110 insertions(+), 121 deletions(-)
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index b91f7ac..976218c 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -209,6 +209,49 @@ static int __init of_add_fixed_phys(void)
arch_initcall(of_add_fixed_phys);
#endif /* CONFIG_FIXED_PHY */
+struct fsl_usb2_dev_data {
+ char *dr_mode; /* controller mode */
+ char *drivers[3]; /* drivers to instantiate for this mode */
+ enum fsl_usb2_operating_modes op_mode; /* operating mode */
+};
+
+struct fsl_usb2_dev_data dr_data[] __initdata = {
+ {
+ "host",
+ { "fsl-ehci", NULL, NULL, },
+ FSL_USB2_DR_HOST,
+ },
+ {
+ "otg",
+ { "fsl-ehci", "fsl-usb2-udc", "fsl-usb2-otg", },
+ FSL_USB2_DR_OTG,
+ },
+ {
+ "periferal",
+ { "fsl-usb2-udc", NULL, NULL, },
+ FSL_USB2_DR_DEVICE,
+ },
+};
+
+struct fsl_usb2_dev_data mph_data[] __initdata = {
+ { NULL, { "fsl-ehci", NULL, }, FSL_USB2_MPH_HOST, },
+};
+
+struct fsl_usb2_dev_data * __init get_dr_data(struct device_node *np)
+{
+ const unsigned char *prop;
+ int i;
+
+ prop = of_get_property(np, "dr_mode", NULL);
+ if (prop) {
+ for (i = 0; i < ARRAY_SIZE(dr_data); i++) {
+ if (!strcmp(prop, dr_data[i].dr_mode))
+ return &dr_data[i];
+ }
+ }
+ return &dr_data[0]; /* mode not specified, use host */
+}
+
static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
{
if (!phy_type)
@@ -225,151 +268,97 @@ static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
return FSL_USB2_PHY_NONE;
}
-static int __init fsl_usb_of_init(void)
+int __init fsl_usb2_register_device(struct device_node *np,
+ struct fsl_usb2_dev_data *dev_data,
+ struct fsl_usb2_platform_data *pdata,
+ unsigned int idx)
{
- struct device_node *np;
- unsigned int i = 0;
- struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
- *usb_dev_dr_client = NULL;
+ struct platform_device *usb_dev;
+ const unsigned char *prop;
+ struct resource r[2];
+ int registered = 0;
int ret;
+ int i;
+
+ if (!(dev_data && pdata))
+ return -EINVAL;
+
+ memset(&r, 0, sizeof(r));
+ ret = of_address_to_resource(np, 0, &r[0]);
+ if (ret)
+ return -ENODEV;
+
+ ret = of_irq_to_resource(np, 0, &r[1]);
+ if (ret == NO_IRQ)
+ return -ENODEV;
+
+ pdata->operating_mode = dev_data->op_mode;
+
+ prop = of_get_property(np, "phy_type", NULL);
+ pdata->phy_mode = determine_usb_phy(prop);
+ ret = 0;
+ for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
+ if (!dev_data->drivers[i])
+ break;
+ usb_dev = platform_device_register_simple(
+ dev_data->drivers[i], idx, r, 2);
+ if (IS_ERR(usb_dev)) {
+ ret = PTR_ERR(usb_dev);
+ goto out;
+ }
- for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
- struct resource r[2];
- struct fsl_usb2_platform_data usb_data;
- const unsigned char *prop = NULL;
-
- memset(&r, 0, sizeof(r));
- memset(&usb_data, 0, sizeof(usb_data));
-
- ret = of_address_to_resource(np, 0, &r[0]);
+ usb_dev->dev.coherent_dma_mask = 0xffffffffUL;
+ usb_dev->dev.dma_mask = &usb_dev->dev.coherent_dma_mask;
+ ret = platform_device_add_data(usb_dev, pdata,
+ sizeof(struct fsl_usb2_platform_data));
if (ret)
- goto err;
-
- of_irq_to_resource(np, 0, &r[1]);
-
- usb_dev_mph =
- platform_device_register_simple("fsl-ehci", i, r, 2);
- if (IS_ERR(usb_dev_mph)) {
- ret = PTR_ERR(usb_dev_mph);
- goto err;
- }
+ platform_device_unregister(usb_dev);
+ else
+ registered++;
+ }
+out:
+ if (!registered)
+ irq_dispose_mapping(r[1].end);
- usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
- usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
+ return ret;
+}
- usb_data.operating_mode = FSL_USB2_MPH_HOST;
+static int __init fsl_usb_of_init(void)
+{
+ struct device_node *np;
+ const unsigned char *prop;
+ struct fsl_usb2_platform_data pdata;
+ unsigned int idx = 0;
+ int ret;
+ for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
+ memset(&pdata, 0, sizeof(pdata));
prop = of_get_property(np, "port0", NULL);
if (prop)
- usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
+ pdata.port_enables |= FSL_USB2_PORT0_ENABLED;
prop = of_get_property(np, "port1", NULL);
if (prop)
- usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
+ pdata.port_enables |= FSL_USB2_PORT1_ENABLED;
- prop = of_get_property(np, "phy_type", NULL);
- usb_data.phy_mode = determine_usb_phy(prop);
-
- ret =
- platform_device_add_data(usb_dev_mph, &usb_data,
- sizeof(struct
- fsl_usb2_platform_data));
+ ret = fsl_usb2_register_device(np, mph_data, &pdata, idx++);
if (ret)
- goto unreg_mph;
- i++;
+ return ret;
}
for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
- struct resource r[2];
- struct fsl_usb2_platform_data usb_data;
- const unsigned char *prop = NULL;
-
if (!of_device_is_available(np))
continue;
- memset(&r, 0, sizeof(r));
- memset(&usb_data, 0, sizeof(usb_data));
-
- ret = of_address_to_resource(np, 0, &r[0]);
+ memset(&pdata, 0, sizeof(pdata));
+ ret = fsl_usb2_register_device(np, get_dr_data(np),
+ &pdata, idx++);
if (ret)
- goto unreg_mph;
-
- of_irq_to_resource(np, 0, &r[1]);
-
- prop = of_get_property(np, "dr_mode", NULL);
-
- if (!prop || !strcmp(prop, "host")) {
- usb_data.operating_mode = FSL_USB2_DR_HOST;
- usb_dev_dr_host = platform_device_register_simple(
- "fsl-ehci", i, r, 2);
- if (IS_ERR(usb_dev_dr_host)) {
- ret = PTR_ERR(usb_dev_dr_host);
- goto err;
- }
- } else if (prop && !strcmp(prop, "peripheral")) {
- usb_data.operating_mode = FSL_USB2_DR_DEVICE;
- usb_dev_dr_client = platform_device_register_simple(
- "fsl-usb2-udc", i, r, 2);
- if (IS_ERR(usb_dev_dr_client)) {
- ret = PTR_ERR(usb_dev_dr_client);
- goto err;
- }
- } else if (prop && !strcmp(prop, "otg")) {
- usb_data.operating_mode = FSL_USB2_DR_OTG;
- usb_dev_dr_host = platform_device_register_simple(
- "fsl-ehci", i, r, 2);
- if (IS_ERR(usb_dev_dr_host)) {
- ret = PTR_ERR(usb_dev_dr_host);
- goto err;
- }
- usb_dev_dr_client = platform_device_register_simple(
- "fsl-usb2-udc", i, r, 2);
- if (IS_ERR(usb_dev_dr_client)) {
- ret = PTR_ERR(usb_dev_dr_client);
- goto err;
- }
- } else {
- ret = -EINVAL;
- goto err;
- }
-
- prop = of_get_property(np, "phy_type", NULL);
- usb_data.phy_mode = determine_usb_phy(prop);
-
- if (usb_dev_dr_host) {
- usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
- usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
- dev.coherent_dma_mask;
- if ((ret = platform_device_add_data(usb_dev_dr_host,
- &usb_data, sizeof(struct
- fsl_usb2_platform_data))))
- goto unreg_dr;
- }
- if (usb_dev_dr_client) {
- usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
- usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
- dev.coherent_dma_mask;
- if ((ret = platform_device_add_data(usb_dev_dr_client,
- &usb_data, sizeof(struct
- fsl_usb2_platform_data))))
- goto unreg_dr;
- }
- i++;
+ return ret;
}
- return 0;
-unreg_dr:
- if (usb_dev_dr_host)
- platform_device_unregister(usb_dev_dr_host);
- if (usb_dev_dr_client)
- platform_device_unregister(usb_dev_dr_client);
-unreg_mph:
- if (usb_dev_mph)
- platform_device_unregister(usb_dev_mph);
-err:
- return ret;
+ return 0;
}
-
arch_initcall(fsl_usb_of_init);
#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
--
1.6.3.3
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