[PATCH v9 2/3] gpio: dwapb: convert device node to fwnode

Jiang Qiu
2016-04-20T07:05:13Z

This patch converts device node to fwnode for dwapb driver, so
as to provide a unified fwnode for DT and ACPI bindings.

Tested-by: Alan Tull <delicious.quinoa@gmail.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jiang Qiu <qiujiang@huawei.com>
---
drivers/gpio/gpio-dwapb.c | 37 ++++++++++++++++----------------
drivers/mfd/intel_quark_i2c_gpio.c | 2 +-
include/linux/platform_data/gpio-dwapb.h | 2 +-
3 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 772d743..92bc204 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -22,6 +22,7 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/spinlock.h>
#include <linux/platform_data/gpio-dwapb.h>
#include <linux/slab.h>
@@ -290,14 +291,14 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
struct dwapb_port_property *pp)
{
struct gpio_chip *gc = &port->gc;
- struct device_node *node = pp->node;
+ struct fwnode_handle *fwnode = pp->fwnode;
struct irq_chip_generic *irq_gc = NULL;
unsigned int hwirq, ngpio = gc->ngpio;
struct irq_chip_type *ct;
int err, i;

- gpio->domain = irq_domain_add_linear(node, ngpio,
- &irq_generic_chip_ops, gpio);
+ gpio->domain = irq_domain_create_linear(fwnode, ngpio,
+ &irq_generic_chip_ops, gpio);
if (!gpio->domain)
return;

@@ -415,7 +416,8 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
}

#ifdef CONFIG_OF_GPIO
- port->gc.of_node = pp->node;
+ port->gc.of_node = is_of_node(pp->fwnode) ?
+ to_of_node(pp->fwnode) : NULL;
#endif
port->gc.ngpio = pp->ngpio;
port->gc.base = pp->gpio_base;
@@ -447,19 +449,15 @@ static void dwapb_gpio_unregister(struct dwapb_gpio *gpio)
}

static struct dwapb_platform_data *
-dwapb_gpio_get_pdata_of(struct device *dev)
+dwapb_gpio_get_pdata(struct device *dev)
{
- struct device_node *node, *port_np;
+ struct fwnode_handle *fwnode;
struct dwapb_platform_data *pdata;
struct dwapb_port_property *pp;
int nports;
int i;

- node = dev->of_node;
- if (!IS_ENABLED(CONFIG_OF_GPIO) || !node)
- return ERR_PTR(-ENODEV);
-
- nports = of_get_child_count(node);
+ nports = device_get_child_node_count(dev);
if (nports == 0)
return ERR_PTR(-ENODEV);

@@ -474,18 +472,18 @@ dwapb_gpio_get_pdata_of(struct device *dev)
pdata->nports = nports;

i = 0;
- for_each_child_of_node(node, port_np) {
+ device_for_each_child_node(dev, fwnode) {
pp = &pdata->properties[i++];
- pp->node = port_np;
+ pp->fwnode = fwnode;

- if (of_property_read_u32(port_np, "reg", &pp->idx) ||
+ if (fwnode_property_read_u32(fwnode, "reg", &pp->idx) ||
pp->idx >= DWAPB_MAX_PORTS) {
dev_err(dev,
"missing/invalid port index for port%d\n", i);
return ERR_PTR(-EINVAL);
}

- if (of_property_read_u32(port_np, "snps,nr-gpios",
+ if (fwnode_property_read_u32(fwnode, "snps,nr-gpios",
&pp->ngpio)) {
dev_info(dev,
"failed to get number of gpios for port%d\n",
@@ -497,9 +495,10 @@ dwapb_gpio_get_pdata_of(struct device *dev)
* Only port A can provide interrupts in all configurations of
* the IP.
*/
- if (pp->idx == 0 &&
- of_property_read_bool(port_np, "interrupt-controller")) {
- pp->irq = irq_of_parse_and_map(port_np, 0);
+ if (dev->of_node && pp->idx == 0 &&
+ fwnode_property_read_bool(fwnode,
+ "interrupt-controller")) {
+ pp->irq = irq_of_parse_and_map(to_of_node(fwnode), 0);
if (!pp->irq)
dev_warn(dev, "no irq for port%d\n", pp->idx);
}
@@ -521,7 +520,7 @@ static int dwapb_gpio_probe(struct platform_device *pdev)
struct dwapb_platform_data *pdata = dev_get_platdata(dev);

if (!pdata) {
- pdata = dwapb_gpio_get_pdata_of(dev);
+ pdata = dwapb_gpio_get_pdata(dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
}
diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c
index a4ef99b..a24b35f 100644
--- a/drivers/mfd/intel_quark_i2c_gpio.c
+++ b/drivers/mfd/intel_quark_i2c_gpio.c
@@ -219,7 +219,7 @@ static int intel_quark_gpio_setup(struct pci_dev *pdev, struct mfd_cell *cell)
return -ENOMEM;

/* Set the properties for portA */
- pdata->properties->node = NULL;
+ pdata->properties->fwnode = NULL;
pdata->properties->idx = 0;
pdata->properties->ngpio = INTEL_QUARK_MFD_NGPIO;
pdata->properties->gpio_base = INTEL_QUARK_MFD_GPIO_BASE;
diff --git a/include/linux/platform_data/gpio-dwapb.h b/include/linux/platform_data/gpio-dwapb.h
index 955b579..2dc7f4a 100644
--- a/include/linux/platform_data/gpio-dwapb.h
+++ b/include/linux/platform_data/gpio-dwapb.h
@@ -15,7 +15,7 @@
#define GPIO_DW_APB_H

struct dwapb_port_property {
- struct device_node *node;
+ struct fwnode_handle *fwnode;
unsigned int idx;
unsigned int ngpio;
unsigned int gpio_base;
--
1.9.1