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-rw-r--r--drivers/block/xsysace.c98
-rw-r--r--drivers/i2c/busses/i2c-cpm.c7
-rw-r--r--drivers/i2c/busses/i2c-pxa.c7
-rw-r--r--drivers/i2c/busses/i2c-s6000.c5
-rw-r--r--drivers/i2c/busses/i2c-tegra.c29
-rw-r--r--drivers/i2c/i2c-core.c5
-rw-r--r--drivers/mmc/host/sdhci-pltfm.c34
-rw-r--r--drivers/mmc/host/sdhci-pltfm.h1
-rw-r--r--drivers/mmc/host/sdhci-tegra.c49
-rw-r--r--drivers/of/address.c18
-rw-r--r--drivers/of/base.c65
-rw-r--r--drivers/of/gpio.c11
-rw-r--r--drivers/of/platform.c196
-rw-r--r--drivers/spi/spi_tegra.c12
-rw-r--r--drivers/tty/serial/of_serial.c43
15 files changed, 452 insertions, 128 deletions
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 6c7fd7db6df..fb1975d82a7 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -1155,12 +1155,19 @@ static int __devinit ace_probe(struct platform_device *dev)
{
resource_size_t physaddr = 0;
int bus_width = ACE_BUS_WIDTH_16; /* FIXME: should not be hard coded */
- int id = dev->id;
+ u32 id = dev->id;
int irq = NO_IRQ;
int i;
dev_dbg(&dev->dev, "ace_probe(%p)\n", dev);
+ /* device id and bus width */
+ of_property_read_u32(dev->dev.of_node, "port-number", &id);
+ if (id < 0)
+ id = 0;
+ if (of_find_property(dev->dev.of_node, "8-bit", NULL))
+ bus_width = ACE_BUS_WIDTH_8;
+
for (i = 0; i < dev->num_resources; i++) {
if (dev->resource[i].flags & IORESOURCE_MEM)
physaddr = dev->resource[i].start;
@@ -1181,57 +1188,7 @@ static int __devexit ace_remove(struct platform_device *dev)
return 0;
}
-static struct platform_driver ace_platform_driver = {
- .probe = ace_probe,
- .remove = __devexit_p(ace_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = "xsysace",
- },
-};
-
-/* ---------------------------------------------------------------------
- * OF_Platform Bus Support
- */
-
#if defined(CONFIG_OF)
-static int __devinit ace_of_probe(struct platform_device *op)
-{
- struct resource res;
- resource_size_t physaddr;
- const u32 *id;
- int irq, bus_width, rc;
-
- /* device id */
- id = of_get_property(op->dev.of_node, "port-number", NULL);
-
- /* physaddr */
- rc = of_address_to_resource(op->dev.of_node, 0, &res);
- if (rc) {
- dev_err(&op->dev, "invalid address\n");
- return rc;
- }
- physaddr = res.start;
-
- /* irq */
- irq = irq_of_parse_and_map(op->dev.of_node, 0);
-
- /* bus width */
- bus_width = ACE_BUS_WIDTH_16;
- if (of_find_property(op->dev.of_node, "8-bit", NULL))
- bus_width = ACE_BUS_WIDTH_8;
-
- /* Call the bus-independent setup code */
- return ace_alloc(&op->dev, id ? be32_to_cpup(id) : 0,
- physaddr, irq, bus_width);
-}
-
-static int __devexit ace_of_remove(struct platform_device *op)
-{
- ace_free(&op->dev);
- return 0;
-}
-
/* Match table for of_platform binding */
static const struct of_device_id ace_of_match[] __devinitconst = {
{ .compatible = "xlnx,opb-sysace-1.00.b", },
@@ -1241,34 +1198,20 @@ static const struct of_device_id ace_of_match[] __devinitconst = {
{},
};
MODULE_DEVICE_TABLE(of, ace_of_match);
+#else /* CONFIG_OF */
+#define ace_of_match NULL
+#endif /* CONFIG_OF */
-static struct platform_driver ace_of_driver = {
- .probe = ace_of_probe,
- .remove = __devexit_p(ace_of_remove),
+static struct platform_driver ace_platform_driver = {
+ .probe = ace_probe,
+ .remove = __devexit_p(ace_remove),
.driver = {
- .name = "xsysace",
.owner = THIS_MODULE,
+ .name = "xsysace",
.of_match_table = ace_of_match,
},
};
-/* Registration helpers to keep the number of #ifdefs to a minimum */
-static inline int __init ace_of_register(void)
-{
- pr_debug("xsysace: registering OF binding\n");
- return platform_driver_register(&ace_of_driver);
-}
-
-static inline void __exit ace_of_unregister(void)
-{
- platform_driver_unregister(&ace_of_driver);
-}
-#else /* CONFIG_OF */
-/* CONFIG_OF not enabled; do nothing helpers */
-static inline int __init ace_of_register(void) { return 0; }
-static inline void __exit ace_of_unregister(void) { }
-#endif /* CONFIG_OF */
-
/* ---------------------------------------------------------------------
* Module init/exit routines
*/
@@ -1282,11 +1225,6 @@ static int __init ace_init(void)
goto err_blk;
}
- rc = ace_of_register();
- if (rc)
- goto err_of;
-
- pr_debug("xsysace: registering platform binding\n");
rc = platform_driver_register(&ace_platform_driver);
if (rc)
goto err_plat;
@@ -1295,21 +1233,17 @@ static int __init ace_init(void)
return 0;
err_plat:
- ace_of_unregister();
-err_of:
unregister_blkdev(ace_major, "xsysace");
err_blk:
printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc);
return rc;
}
+module_init(ace_init);
static void __exit ace_exit(void)
{
pr_debug("Unregistering Xilinx SystemACE driver\n");
platform_driver_unregister(&ace_platform_driver);
- ace_of_unregister();
unregister_blkdev(ace_major, "xsysace");
}
-
-module_init(ace_init);
module_exit(ace_exit);
diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 3a20961bef1..b1d9cd28d8d 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -662,11 +662,8 @@ static int __devinit cpm_i2c_probe(struct platform_device *ofdev)
/* register new adapter to i2c module... */
data = of_get_property(ofdev->dev.of_node, "linux,i2c-index", &len);
- if (data && len == 4) {
- cpm->adap.nr = *data;
- result = i2c_add_numbered_adapter(&cpm->adap);
- } else
- result = i2c_add_adapter(&cpm->adap);
+ cpm->adap.nr = (data && len == 4) ? be32_to_cpup(data) : -1;
+ result = i2c_add_numbered_adapter(&cpm->adap);
if (result < 0) {
dev_err(&ofdev->dev, "Unable to register with I2C\n");
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index f59224a5c76..d6036465099 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -1079,7 +1079,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
* The reason to do so is to avoid sysfs names that only make
* sense when there are multiple adapters.
*/
- i2c->adap.nr = dev->id != -1 ? dev->id : 0;
+ i2c->adap.nr = dev->id;
snprintf(i2c->adap.name, sizeof(i2c->adap.name), "pxa_i2c-i2c.%u",
i2c->adap.nr);
@@ -1142,10 +1142,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
i2c->adap.dev.of_node = dev->dev.of_node;
#endif
- if (i2c_type == REGS_CE4100)
- ret = i2c_add_adapter(&i2c->adap);
- else
- ret = i2c_add_numbered_adapter(&i2c->adap);
+ ret = i2c_add_numbered_adapter(&i2c->adap);
if (ret < 0) {
printk(KERN_INFO "I2C: Failed to add bus\n");
goto eadapt;
diff --git a/drivers/i2c/busses/i2c-s6000.c b/drivers/i2c/busses/i2c-s6000.c
index cb5d01e279c..c64ba736f48 100644
--- a/drivers/i2c/busses/i2c-s6000.c
+++ b/drivers/i2c/busses/i2c-s6000.c
@@ -341,10 +341,7 @@ static int __devinit s6i2c_probe(struct platform_device *dev)
i2c_wr16(iface, S6_I2C_TXTL, 0);
platform_set_drvdata(dev, iface);
- if (bus_num < 0)
- rc = i2c_add_adapter(p_adap);
- else
- rc = i2c_add_numbered_adapter(p_adap);
+ rc = i2c_add_numbered_adapter(p_adap);
if (rc)
goto err_irq_free;
return 0;
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index fb3b4f8f815..7ac2f7a87e6 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/i2c-tegra.h>
+#include <linux/of_i2c.h>
#include <asm/unaligned.h>
@@ -546,6 +547,7 @@ static int tegra_i2c_probe(struct platform_device *pdev)
struct resource *iomem;
struct clk *clk;
struct clk *i2c_clk;
+ const unsigned int *prop;
void *base;
int irq;
int ret = 0;
@@ -603,7 +605,17 @@ static int tegra_i2c_probe(struct platform_device *pdev)
i2c_dev->irq = irq;
i2c_dev->cont_id = pdev->id;
i2c_dev->dev = &pdev->dev;
- i2c_dev->bus_clk_rate = pdata ? pdata->bus_clk_rate : 100000;
+
+ i2c_dev->bus_clk_rate = 100000; /* default clock rate */
+ if (pdata) {
+ i2c_dev->bus_clk_rate = pdata->bus_clk_rate;
+ } else if (i2c_dev->dev->of_node) {
+ /* if there is a device tree node ... */
+ prop = of_get_property(i2c_dev->dev->of_node,
+ "clock-frequency", NULL);
+ if (prop)
+ i2c_dev->bus_clk_rate = be32_to_cpup(prop);
+ }
if (pdev->id == 3)
i2c_dev->is_dvc = 1;
@@ -633,6 +645,7 @@ static int tegra_i2c_probe(struct platform_device *pdev)
i2c_dev->adapter.algo = &tegra_i2c_algo;
i2c_dev->adapter.dev.parent = &pdev->dev;
i2c_dev->adapter.nr = pdev->id;
+ i2c_dev->adapter.dev.of_node = pdev->dev.of_node;
ret = i2c_add_numbered_adapter(&i2c_dev->adapter);
if (ret) {
@@ -640,6 +653,8 @@ static int tegra_i2c_probe(struct platform_device *pdev)
goto err_free_irq;
}
+ of_i2c_register_devices(&i2c_dev->adapter);
+
return 0;
err_free_irq:
free_irq(i2c_dev->irq, i2c_dev);
@@ -704,6 +719,17 @@ static int tegra_i2c_resume(struct platform_device *pdev)
}
#endif
+#if defined(CONFIG_OF)
+/* Match table for of_platform binding */
+static const struct of_device_id tegra_i2c_of_match[] __devinitconst = {
+ { .compatible = "nvidia,tegra20-i2c", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
+#else
+#define tegra_i2c_of_match NULL
+#endif
+
static struct platform_driver tegra_i2c_driver = {
.probe = tegra_i2c_probe,
.remove = tegra_i2c_remove,
@@ -714,6 +740,7 @@ static struct platform_driver tegra_i2c_driver = {
.driver = {
.name = "tegra-i2c",
.owner = THIS_MODULE,
+ .of_match_table = tegra_i2c_of_match,
},
};
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 9a58994ff7e..131079a3e29 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -925,6 +925,9 @@ EXPORT_SYMBOL(i2c_add_adapter);
* or otherwise built in to the system's mainboard, and where i2c_board_info
* is used to properly configure I2C devices.
*
+ * If the requested bus number is set to -1, then this function will behave
+ * identically to i2c_add_adapter, and will dynamically assign a bus number.
+ *
* If no devices have pre-been declared for this bus, then be sure to
* register the adapter before any dynamically allocated ones. Otherwise
* the required bus ID may not be available.
@@ -940,6 +943,8 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adap)
int id;
int status;
+ if (adap->nr == -1) /* -1 means dynamically assign bus id */
+ return i2c_add_adapter(adap);
if (adap->nr & ~MAX_ID_MASK)
return -EINVAL;
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index dbab0407f4b..e231f917225 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -49,10 +49,30 @@ static struct sdhci_ops sdhci_pltfm_ops = {
* Device probing/removal *
* *
\*****************************************************************************/
+#if defined(CONFIG_OF)
+#include <linux/of_device.h>
+static const struct of_device_id sdhci_dt_ids[] = {
+ { .compatible = "nvidia,tegra20-sdhci", .data = &sdhci_tegra_dt_pdata },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, sdhci_dt_ids);
+
+static const struct of_device_id *sdhci_get_of_device_id(struct platform_device *pdev)
+{
+ return of_match_device(sdhci_dt_ids, &pdev->dev);
+}
+#else
+#define sdhci_dt_ids NULL
+static inline struct of_device_id *sdhci_get_of_device_id(struct platform_device *pdev)
+{
+ return NULL;
+}
+#endif
static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
{
const struct platform_device_id *platid = platform_get_device_id(pdev);
+ const struct of_device_id *dtid = sdhci_get_of_device_id(pdev);
struct sdhci_pltfm_data *pdata;
struct sdhci_host *host;
struct sdhci_pltfm_host *pltfm_host;
@@ -61,6 +81,8 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
if (platid && platid->driver_data)
pdata = (void *)platid->driver_data;
+ else if (dtid && dtid->data)
+ pdata = dtid->data;
else
pdata = pdev->dev.platform_data;
@@ -140,12 +162,21 @@ err:
static int __devexit sdhci_pltfm_remove(struct platform_device *pdev)
{
- struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
+ const struct platform_device_id *platid = platform_get_device_id(pdev);
+ const struct of_device_id *dtid = sdhci_get_of_device_id(pdev);
+ struct sdhci_pltfm_data *pdata;
struct sdhci_host *host = platform_get_drvdata(pdev);
struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
int dead;
u32 scratch;
+ if (platid && platid->driver_data)
+ pdata = (void *)platid->driver_data;
+ else if (dtid && dtid->data)
+ pdata = dtid->data;
+ else
+ pdata = pdev->dev.platform_data;
+
dead = 0;
scratch = readl(host->ioaddr + SDHCI_INT_STATUS);
if (scratch == (u32)-1)
@@ -203,6 +234,7 @@ static struct platform_driver sdhci_pltfm_driver = {
.driver = {
.name = "sdhci",
.owner = THIS_MODULE,
+ .of_match_table = sdhci_dt_ids,
},
.probe = sdhci_pltfm_probe,
.remove = __devexit_p(sdhci_pltfm_remove),
diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
index 2b37016ad0a..2a438175839 100644
--- a/drivers/mmc/host/sdhci-pltfm.h
+++ b/drivers/mmc/host/sdhci-pltfm.h
@@ -24,5 +24,6 @@ extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata;
extern struct sdhci_pltfm_data sdhci_esdhc_imx_pdata;
extern struct sdhci_pltfm_data sdhci_dove_pdata;
extern struct sdhci_pltfm_data sdhci_tegra_pdata;
+extern struct sdhci_pltfm_data sdhci_tegra_dt_pdata;
#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 343c97edba3..c9d4d282041 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -18,8 +18,10 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
+#include <linux/slab.h>
#include <mach/gpio.h>
#include <mach/sdhci.h>
@@ -216,6 +218,33 @@ out:
return rc;
}
+static int tegra_sdhci_pltfm_dt_init(struct sdhci_host *host,
+ struct sdhci_pltfm_data *pdata)
+{
+ struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
+ struct tegra_sdhci_platform_data *plat;
+
+ if (pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "%s: platform_data not NULL; aborting\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ plat = kzalloc(sizeof(*plat), GFP_KERNEL);
+ if (!plat)
+ return -ENOMEM;
+ pdev->dev.platform_data = plat;
+
+ plat->cd_gpio = of_get_gpio(pdev->dev.of_node, 0);
+ plat->wp_gpio = of_get_gpio(pdev->dev.of_node, 1);
+ plat->power_gpio = of_get_gpio(pdev->dev.of_node, 2);
+
+ dev_info(&pdev->dev, "using gpios cd=%i, wp=%i power=%i\n",
+ plat->cd_gpio, plat->wp_gpio, plat->power_gpio);
+
+ return tegra_sdhci_pltfm_init(host, pdata);
+}
+
static void tegra_sdhci_pltfm_exit(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -244,6 +273,16 @@ static void tegra_sdhci_pltfm_exit(struct sdhci_host *host)
clk_put(pltfm_host->clk);
}
+static void tegra_sdhci_pltfm_dt_exit(struct sdhci_host *host)
+{
+ struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
+
+ tegra_sdhci_pltfm_exit(host);
+
+ kfree(pdev->dev.platform_data);
+ pdev->dev.platform_data = NULL;
+}
+
static struct sdhci_ops tegra_sdhci_ops = {
.get_ro = tegra_sdhci_get_ro,
.read_l = tegra_sdhci_readl,
@@ -261,3 +300,13 @@ struct sdhci_pltfm_data sdhci_tegra_pdata = {
.init = tegra_sdhci_pltfm_init,
.exit = tegra_sdhci_pltfm_exit,
};
+
+struct sdhci_pltfm_data sdhci_tegra_dt_pdata = {
+ .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+ SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_NO_HISPD_BIT |
+ SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+ .ops = &tegra_sdhci_ops,
+ .init = tegra_sdhci_pltfm_dt_init,
+ .exit = tegra_sdhci_pltfm_dt_exit,
+};
diff --git a/drivers/of/address.c b/drivers/of/address.c
index b4559c58c09..da1f4b9605d 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -577,6 +577,24 @@ int of_address_to_resource(struct device_node *dev, int index,
}
EXPORT_SYMBOL_GPL(of_address_to_resource);
+struct device_node *of_find_matching_node_by_address(struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address)
+{
+ struct device_node *dn = of_find_matching_node(from, matches);
+ struct resource res;
+
+ while (dn) {
+ if (of_address_to_resource(dn, 0, &res))
+ continue;
+ if (res.start == base_address)
+ return dn;
+ dn = of_find_matching_node(dn, matches);
+ }
+
+ return NULL;
+}
+
/**
* of_iomap - Maps the memory mapped IO for a given device_node
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 632ebae7f17..02ed36719de 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -596,6 +596,71 @@ struct device_node *of_find_node_by_phandle(phandle handle)
EXPORT_SYMBOL(of_find_node_by_phandle);
/**
+ * of_property_read_u32_array - Find and read an array of 32 bit integers
+ * from a property.
+ *
+ * @np: device node from which the property value is to be read.
+ * @propname: name of the property to be searched.
+ * @out_value: pointer to return value, modified only if return value is 0.
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_value is modified only if a valid u32 value can be decoded.
+ */
+int of_property_read_u32_array(const struct device_node *np, char *propname,
+ u32 *out_values, size_t sz)
+{
+ struct property *prop = of_find_property(np, propname, NULL);
+ const __be32 *val;
+
+ if (!prop)
+ return -EINVAL;
+ if (!prop->value)
+ return -ENODATA;
+ if ((sz * sizeof(*out_values)) > prop->length)
+ return -EOVERFLOW;
+
+ val = prop->value;
+ while (sz--)
+ *out_values++ = be32_to_cpup(val++);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u32_array);
+
+/**
+ * of_property_read_string - Find and read a string from a property
+ * @np: device node from which the property value is to be read.
+ * @propname: name of the property to be searched.
+ * @out_string: pointer to null terminated return string, modified only if
+ * return value is 0.
+ *
+ * Search for a property in a device tree node and retrieve a null
+ * terminated string value (pointer to data, not a copy). Returns 0 on
+ * success, -EINVAL if the property does not exist, -ENODATA if property
+ * does not have a value, and -EILSEQ if the string is not null-terminated
+ * within the length of the property data.
+ *
+ * The out_string pointer is modified only if a valid string can be decoded.
+ */
+int of_property_read_string(struct device_node *np, char *propname,
+ const char **out_string)
+{
+ struct property *prop = of_find_property(np, propname, NULL);
+ if (!prop)
+ return -EINVAL;
+ if (!prop->value)
+ return -ENODATA;
+ if (strnlen(prop->value, prop->length) >= prop->length)
+ return -EILSEQ;
+ *out_string = prop->value;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_string);
+
+/**
* of_parse_phandle - Resolve a phandle property to a device_node pointer
* @np: Pointer to device node holding phandle property
* @phandle_name: Name of property holding a phandle value
diff --git a/drivers/of/gpio.c b/drivers/of/gpio.c
index 905960338fb..3007662ac61 100644
--- a/drivers/of/gpio.c
+++ b/drivers/of/gpio.c
@@ -21,8 +21,9 @@
#include <linux/slab.h>
/**
- * of_get_gpio_flags - Get a GPIO number and flags to use with GPIO API
+ * of_get_named_gpio_flags() - Get a GPIO number and flags to use with GPIO API
* @np: device node to get GPIO from
+ * @propname: property name containing gpio specifier(s)
* @index: index of the GPIO
* @flags: a flags pointer to fill in
*
@@ -30,8 +31,8 @@
* value on the error condition. If @flags is not NULL the function also fills
* in flags for the GPIO.
*/
-int of_get_gpio_flags(struct device_node *np, int index,
- enum of_gpio_flags *flags)
+int of_get_named_gpio_flags(struct device_node *np, const char *propname,
+ int index, enum of_gpio_flags *flags)
{
int ret;
struct device_node *gpio_np;
@@ -40,7 +41,7 @@ int of_get_gpio_flags(struct device_node *np, int index,
const void *gpio_spec;
const __be32 *gpio_cells;
- ret = of_parse_phandles_with_args(np, "gpios", "#gpio-cells", index,
+ ret = of_parse_phandles_with_args(np, propname, "#gpio-cells", index,
&gpio_np, &gpio_spec);
if (ret) {
pr_debug("%s: can't parse gpios property\n", __func__);
@@ -79,7 +80,7 @@ err0:
pr_debug("%s exited with status %d\n", __func__, ret);
return ret;
}
-EXPORT_SYMBOL(of_get_gpio_flags);
+EXPORT_SYMBOL(of_get_named_gpio_flags);
/**
* of_gpio_count - Count GPIOs for a device
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 63d3cb73bdb..e75af391e28 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -13,6 +13,7 @@
*/
#include <linux/errno.h>
#include <linux/module.h>
+#include <linux/amba/bus.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
@@ -22,6 +23,14 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
+const struct of_device_id of_default_bus_match_table[] = {
+ { .compatible = "simple-bus", },
+#ifdef CONFIG_ARM_AMBA
+ { .compatible = "arm,amba-bus", },
+#endif /* CONFIG_ARM_AMBA */
+ {} /* Empty terminated list */
+};
+
static int of_dev_node_match(struct device *dev, void *data)
{
return dev->of_node == data;
@@ -168,17 +177,20 @@ struct platform_device *of_device_alloc(struct device_node *np,
EXPORT_SYMBOL(of_device_alloc);
/**
- * of_platform_device_create - Alloc, initialize and register an of_device
+ * of_platform_device_create_pdata - Alloc, initialize and register an of_device
* @np: pointer to node to create device for
* @bus_id: name to assign device
+ * @platform_data: pointer to populate platform_data pointer with
* @parent: Linux device model parent device.
*
* Returns pointer to created platform device, or NULL if a device was not
* registered. Unavailable devices will not get registered.
*/
-struct platform_device *of_platform_device_create(struct device_node *np,
- const char *bus_id,
- struct device *parent)
+struct platform_device *of_platform_device_create_pdata(
+ struct device_node *np,
+ const char *bus_id,
+ void *platform_data,
+ struct device *parent)
{
struct platform_device *dev;
@@ -194,6 +206,7 @@ struct platform_device *of_platform_device_create(struct device_node *np,
#endif
dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
dev->dev.bus = &platform_bus_type;
+ dev->dev.platform_data = platform_data;
/* We do not fill the DMA ops for platform devices by default.
* This is currently the responsibility of the platform code
@@ -207,8 +220,111 @@ struct platform_device *of_platform_device_create(struct device_node *np,
return dev;
}
+
+/**
+ * of_platform_device_create - Alloc, initialize and register an of_device
+ * @np: pointer to node to create device for
+ * @bus_id: name to assign device
+ * @parent: Linux device model parent device.
+ *
+ * Returns pointer to created platform device, or NULL if a device was not
+ * registered. Unavailable devices will not get registered.
+ */
+struct platform_device *of_platform_device_create(struct device_node *np,
+ const char *bus_id,
+ struct device *parent)
+{
+ return of_platform_device_create_pdata(np, bus_id, NULL, parent);
+}
EXPORT_SYMBOL(of_platform_device_create);
+#ifdef CONFIG_ARM_AMBA
+static struct amba_device *of_amba_device_create(struct device_node *node,
+ const char *bus_id,
+ void *platform_data,
+ struct device *parent)
+{
+ struct amba_device *dev;
+ const void *prop;
+ int i, ret;
+
+ pr_debug("Creating amba device %s\n", node->full_name);
+
+ if (!of_device_is_available(node))
+ return NULL;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ /* setup generic device info */
+ dev->dev.coherent_dma_mask = ~0;
+ dev->dev.of_node = of_node_get(node);
+ dev->dev.parent = parent;
+ dev->dev.platform_data = platform_data;
+ if (bus_id)
+ dev_set_name(&dev->dev, "%s", bus_id);
+ else
+ of_device_make_bus_id(&dev->dev);
+
+ /* setup amba-specific device info */
+ dev->dma_mask = ~0;
+
+ /* Allow the HW Peripheral ID to be overridden */
+ prop = of_get_property(node, "arm,primecell-periphid", NULL);
+ if (prop)
+ dev->periphid = of_read_ulong(prop, 1);
+
+ /* Decode the IRQs and address ranges */
+ for (i = 0; i < AMBA_NR_IRQS; i++)
+ dev->irq[i] = irq_of_parse_and_map(node, i);
+
+ ret = of_address_to_resource(node, 0, &dev->res);
+ if (ret)
+ goto err_free;
+
+ ret = amba_device_register(dev, &iomem_resource);
+ if (ret)
+ goto err_free;
+
+ return dev;
+
+err_free:
+ kfree(dev);
+ return NULL;
+}
+#else /* CONFIG_ARM_AMBA */
+static struct amba_device *of_amba_device_create(struct device_node *node,
+ const char *bus_id,
+ void *platform_data,
+ struct device *parent)
+{
+ return NULL;
+}
+#endif /* CONFIG_ARM_AMBA */
+
+/**
+ * of_devname_lookup() - Given a device node, lookup the preferred Linux name
+ */
+static const struct of_dev_auxdata *of_dev_lookup(const struct of_dev_auxdata *lookup,
+ struct device_node *np)
+{
+ struct resource res;
+ if (lookup) {
+ for(; lookup->name != NULL; lookup++) {
+ if (!of_device_is_compatible(np, lookup->compatible))
+ continue;
+ if (of_address_to_resource(np, 0, &res))
+ continue;
+ if (res.start != lookup->phys_addr)
+ continue;
+ pr_debug("%s: devname=%s\n", np->full_name, lookup->name);
+ return lookup;
+ }
+ }
+ return NULL;
+}
+
/**
* of_platform_bus_create() - Create a device for a node and its children.
* @bus: device node of the bus to instantiate
@@ -221,19 +337,41 @@ EXPORT_SYMBOL(of_platform_device_create);
*/
static int of_platform_bus_create(struct device_node *bus,
const struct of_device_id *matches,
- struct device *parent)
+ const struct of_dev_auxdata *lookup,
+ struct device *parent, bool strict)
{
+ const struct of_dev_auxdata *auxdata;
struct device_node *child;
struct platform_device *dev;
+ const char *bus_id = NULL;
+ void *platform_data = NULL;
int rc = 0;
- dev = of_platform_device_create(bus, NULL, parent);
+ /* Make sure it has a compatible property */
+ if (strict && (!of_get_property(bus, "compatible", NULL))) {
+ pr_debug("%s() - skipping %s, no compatible prop\n",
+ __func__, bus->full_name);
+ return 0;
+ }
+
+ auxdata = of_dev_lookup(lookup, bus);
+ if (auxdata) {
+ bus_id = auxdata->name;
+ platform_data = auxdata->platform_data;
+ }
+
+ if (of_device_is_compatible(bus, "arm,primecell")) {
+ of_amba_device_create(bus, bus_id, platform_data, parent);
+ return 0;
+ }
+
+ dev = of_platform_device_create_pdata(bus, bus_id, platform_data, parent);
if (!dev || !of_match_node(matches, bus))
return 0;
for_each_child_of_node(bus, child) {
pr_debug(" create child: %s\n", child->full_name);
- rc = of_platform_bus_create(child, matches, &dev->dev);
+ rc = of_platform_bus_create(child, matches, lookup, &dev->dev, strict);
if (rc) {
of_node_put(child);
break;
@@ -267,11 +405,11 @@ int of_platform_bus_probe(struct device_node *root,
/* Do a self check of bus type, if there's a match, create children */
if (of_match_node(matches, root)) {
- rc = of_platform_bus_create(root, matches, parent);
+ rc = of_platform_bus_create(root, matches, NULL, parent, false);
} else for_each_child_of_node(root, child) {
if (!of_match_node(matches, child))
continue;
- rc = of_platform_bus_create(child, matches, parent);
+ rc = of_platform_bus_create(child, matches, NULL, parent, false);
if (rc)
break;
}
@@ -280,4 +418,44 @@ int of_platform_bus_probe(struct device_node *root,
return rc;
}
EXPORT_SYMBOL(of_platform_bus_probe);
+
+/**
+ * of_platform_populate() - Populate platform_devices from device tree data
+ * @root: parent of the first level to probe or NULL for the root of the tree
+ * @matches: match table, NULL to use the default
+ * @parent: parent to hook devices from, NULL for toplevel
+ *
+ * Similar to of_platform_bus_probe(), this function walks the device tree
+ * and creates devices from nodes. It differs in that it follows the modern
+ * convention of requiring all device nodes to have a 'compatible' property,
+ * and it is suitable for creating devices which are children of the root
+ * node (of_platform_bus_probe will only create children of the root which
+ * are selected by the @matches argument).
+ *
+ * New board support should be using this function instead of
+ * of_platform_bus_probe().
+ *
+ * Returns 0 on success, < 0 on failure.
+ */
+int of_platform_populate(struct device_node *root,
+ const struct of_device_id *matches,
+ const struct of_dev_auxdata *lookup,
+ struct device *parent)
+{
+ struct device_node *child;
+ int rc = 0;
+
+ root = root ? of_node_get(root) : of_find_node_by_path("/");
+ if (!root)
+ return -EINVAL;
+
+ for_each_child_of_node(root, child) {
+ rc = of_platform_bus_create(child, matches, lookup, parent, true);
+ if (rc)
+ break;
+ }
+
+ of_node_put(root);
+ return rc;
+}
#endif /* !CONFIG_SPARC */
diff --git a/drivers/spi/spi_tegra.c b/drivers/spi/spi_tegra.c
index 6c3aa6ecaad..b0e3586d1e1 100644
--- a/drivers/spi/spi_tegra.c
+++ b/drivers/spi/spi_tegra.c
@@ -546,6 +546,7 @@ static int __init spi_tegra_probe(struct platform_device *pdev)
tspi->rx_dma_req.req_sel = spi_tegra_req_sels[pdev->id];
tspi->rx_dma_req.dev = tspi;
+ master->dev.of_node = pdev->dev.of_node;
ret = spi_register_master(master);
if (ret < 0)
@@ -595,10 +596,21 @@ static int __devexit spi_tegra_remove(struct platform_device *pdev)
MODULE_ALIAS("platform:spi_tegra");
+#ifdef CONFIG_OF
+static struct of_device_id spi_tegra_of_match_table[] __devinitdata = {
+ { .compatible = "nvidia,tegra20-spi", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, spi_tegra_of_match_table);
+#else /* CONFIG_OF */
+#define spi_tegra_of_match_table NULL
+#endif /* CONFIG_OF */
+
static struct platform_driver spi_tegra_driver = {
.driver = {
.name = "spi_tegra",
.owner = THIS_MODULE,
+ .of_match_table = spi_tegra_of_match_table,
},
.remove = __devexit_p(spi_tegra_remove),
};
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index c911b2419ab..e58cece6f44 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -32,17 +32,17 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
{
struct resource resource;
struct device_node *np = ofdev->dev.of_node;
- const __be32 *clk, *spd;
- const __be32 *prop;
- int ret, prop_size;
+ u32 clk, spd, prop;
+ int ret;
memset(port, 0, sizeof *port);
- spd = of_get_property(np, "current-speed", NULL);
- clk = of_get_property(np, "clock-frequency", NULL);
- if (!clk) {
+ if (of_property_read_u32(np, "clock-frequency", &clk)) {
dev_warn(&ofdev->dev, "no clock-frequency property set\n");
return -ENODEV;
}
+ /* If current-speed was set, then try not to change it. */
+ if (of_property_read_u32(np, "current-speed", &spd) == 0)
+ port->custom_divisor = clk / (16 * spd);
ret = of_address_to_resource(np, 0, &resource);
if (ret) {
@@ -54,25 +54,35 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
port->mapbase = resource.start;
/* Check for shifted address mapping */
- prop = of_get_property(np, "reg-offset", &prop_size);
- if (prop && (prop_size == sizeof(u32)))
- port->mapbase += be32_to_cpup(prop);
+ if (of_property_read_u32(np, "reg-offset", &prop) == 0)
+ port->mapbase += prop;
/* Check for registers offset within the devices address range */
- prop = of_get_property(np, "reg-shift", &prop_size);
- if (prop && (prop_size == sizeof(u32)))
- port->regshift = be32_to_cpup(prop);
+ if (of_property_read_u32(np, "reg-shift", &prop) == 0)
+ port->regshift = prop;
port->irq = irq_of_parse_and_map(np, 0);
port->iotype = UPIO_MEM;
+ if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
+ switch (prop) {
+ case 1:
+ port->iotype = UPIO_MEM;
+ break;
+ case 4:
+ port->iotype = UPIO_MEM32;
+ break;
+ default:
+ dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",
+ prop);
+ return -EINVAL;
+ }
+ }
+
port->type = type;
- port->uartclk = be32_to_cpup(clk);
+ port->uartclk = clk;
port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
| UPF_FIXED_PORT | UPF_FIXED_TYPE;
port->dev = &ofdev->dev;
- /* If current-speed was set, then try not to change it. */
- if (spd)
- port->custom_divisor = be32_to_cpup(clk) / (16 * (be32_to_cpup(spd)));
return 0;
}
@@ -171,6 +181,7 @@ static struct of_device_id __devinitdata of_platform_serial_table[] = {
{ .compatible = "ns16550", .data = (void *)PORT_16550, },
{ .compatible = "ns16750", .data = (void *)PORT_16750, },
{ .compatible = "ns16850", .data = (void *)PORT_16850, },
+ { .compatible = "nvidia,tegra20-uart", .data = (void *)PORT_TEGRA, },
#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
{ .compatible = "ibm,qpace-nwp-serial",
.data = (void *)PORT_NWPSERIAL, },
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 09:08:40 +0000