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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-08-04 19:00:18 +0300
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-08-11 16:00:53 +0300
commit36edadf5d336df62288658fcbdbb0fbf14554611 (patch)
treeaee8377ffd4de28b141f649c69ab92a60ed3b29a /drivers/mfd/intel_quark_i2c_gpio.c
parentf973be8ad5dfa2ceac19657444ba57abc205218c (diff)
downloadlinux-36edadf5d336df62288658fcbdbb0fbf14554611.tar.bz2
mfd: intel_quark_i2c_gpio: Convert GPIO to use software nodes
The driver can provide a software node group instead of passing legacy platform data. This will allow to drop the legacy platform data structures along with unifying a child device driver to use same interface for all property providers, i.e. Device Tree, ACPI, and board files. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Serge Semin <fancer.lancer@gmail.com> Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/mfd/intel_quark_i2c_gpio.c')
-rw-r--r--drivers/mfd/intel_quark_i2c_gpio.c70
1 files changed, 37 insertions, 33 deletions
diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c
index a43993e38b6e..9b9c76bd067b 100644
--- a/drivers/mfd/intel_quark_i2c_gpio.c
+++ b/drivers/mfd/intel_quark_i2c_gpio.c
@@ -17,7 +17,6 @@
#include <linux/clk-provider.h>
#include <linux/dmi.h>
#include <linux/i2c.h>
-#include <linux/platform_data/gpio-dwapb.h>
#include <linux/property.h>
/* PCI BAR for register base address */
@@ -28,15 +27,6 @@
#define MFD_ACPI_MATCH_GPIO 0ULL
#define MFD_ACPI_MATCH_I2C 1ULL
-/* The base GPIO number under GPIOLIB framework */
-#define INTEL_QUARK_MFD_GPIO_BASE 8
-
-/* The default number of South-Cluster GPIO on Quark. */
-#define INTEL_QUARK_MFD_NGPIO 8
-
-/* The DesignWare GPIO ports on Quark. */
-#define INTEL_QUARK_GPIO_NPORTS 1
-
#define INTEL_QUARK_IORES_MEM 0
#define INTEL_QUARK_IORES_IRQ 1
@@ -111,12 +101,38 @@ static struct resource intel_quark_gpio_res[] = {
[INTEL_QUARK_IORES_MEM] = {
.flags = IORESOURCE_MEM,
},
+ [INTEL_QUARK_IORES_IRQ] = {
+ .flags = IORESOURCE_IRQ,
+ },
};
static struct mfd_cell_acpi_match intel_quark_acpi_match_gpio = {
.adr = MFD_ACPI_MATCH_GPIO,
};
+static const struct software_node intel_quark_gpio_controller_node = {
+ .name = "intel-quark-gpio-controller",
+};
+
+static const struct property_entry intel_quark_gpio_portA_properties[] = {
+ PROPERTY_ENTRY_U32("reg", 0),
+ PROPERTY_ENTRY_U32("snps,nr-gpios", 8),
+ PROPERTY_ENTRY_U32("gpio-base", 8),
+ { }
+};
+
+static const struct software_node intel_quark_gpio_portA_node = {
+ .name = "portA",
+ .parent = &intel_quark_gpio_controller_node,
+ .properties = intel_quark_gpio_portA_properties,
+};
+
+static const struct software_node *intel_quark_gpio_node_group[] = {
+ &intel_quark_gpio_controller_node,
+ &intel_quark_gpio_portA_node,
+ NULL
+};
+
static struct mfd_cell intel_quark_mfd_cells[] = {
[MFD_I2C_BAR] = {
.id = MFD_I2C_BAR,
@@ -203,34 +219,19 @@ static int intel_quark_gpio_setup(struct pci_dev *pdev)
{
struct mfd_cell *cell = &intel_quark_mfd_cells[MFD_GPIO_BAR];
struct resource *res = intel_quark_gpio_res;
- struct dwapb_platform_data *pdata;
- struct device *dev = &pdev->dev;
+ int ret;
res[INTEL_QUARK_IORES_MEM].start = pci_resource_start(pdev, MFD_GPIO_BAR);
res[INTEL_QUARK_IORES_MEM].end = pci_resource_end(pdev, MFD_GPIO_BAR);
- pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- /* For intel quark x1000, it has only one port: portA */
- pdata->nports = INTEL_QUARK_GPIO_NPORTS;
- pdata->properties = devm_kcalloc(dev, pdata->nports,
- sizeof(*pdata->properties),
- GFP_KERNEL);
- if (!pdata->properties)
- return -ENOMEM;
-
- /* Set the properties for portA */
- pdata->properties->fwnode = NULL;
- pdata->properties->idx = 0;
- pdata->properties->ngpio = INTEL_QUARK_MFD_NGPIO;
- pdata->properties->gpio_base = INTEL_QUARK_MFD_GPIO_BASE;
- pdata->properties->irq[0] = pci_irq_vector(pdev, 0);
+ res[INTEL_QUARK_IORES_IRQ].start = pci_irq_vector(pdev, 0);
+ res[INTEL_QUARK_IORES_IRQ].end = pci_irq_vector(pdev, 0);
- cell->platform_data = pdata;
- cell->pdata_size = sizeof(*pdata);
+ ret = software_node_register_node_group(intel_quark_gpio_node_group);
+ if (ret)
+ return ret;
+ cell->swnode = &intel_quark_gpio_controller_node;
return 0;
}
@@ -273,10 +274,12 @@ static int intel_quark_mfd_probe(struct pci_dev *pdev,
ARRAY_SIZE(intel_quark_mfd_cells), NULL, 0,
NULL);
if (ret)
- goto err_free_irq_vectors;
+ goto err_unregister_gpio_node_group;
return 0;
+err_unregister_gpio_node_group:
+ software_node_unregister_node_group(intel_quark_gpio_node_group);
err_free_irq_vectors:
pci_free_irq_vectors(pdev);
err_unregister_i2c_clk:
@@ -287,6 +290,7 @@ err_unregister_i2c_clk:
static void intel_quark_mfd_remove(struct pci_dev *pdev)
{
mfd_remove_devices(&pdev->dev);
+ software_node_unregister_node_group(intel_quark_gpio_node_group);
pci_free_irq_vectors(pdev);
intel_quark_unregister_i2c_clk(&pdev->dev);
}