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Diffstat (limited to 'target/linux/brcm2708/patches-3.18/0068-lirc-rpi-Add-device-tree-support-and-a-suitable-over.patch')
-rw-r--r--target/linux/brcm2708/patches-3.18/0068-lirc-rpi-Add-device-tree-support-and-a-suitable-over.patch296
1 files changed, 0 insertions, 296 deletions
diff --git a/target/linux/brcm2708/patches-3.18/0068-lirc-rpi-Add-device-tree-support-and-a-suitable-over.patch b/target/linux/brcm2708/patches-3.18/0068-lirc-rpi-Add-device-tree-support-and-a-suitable-over.patch
deleted file mode 100644
index fef1e2a..0000000
--- a/target/linux/brcm2708/patches-3.18/0068-lirc-rpi-Add-device-tree-support-and-a-suitable-over.patch
+++ /dev/null
@@ -1,296 +0,0 @@
-From f3c1830096661e270f11f2a33ffb7274f50c90a6 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Thu, 18 Dec 2014 16:48:32 +0000
-Subject: [PATCH 068/114] lirc-rpi: Add device tree support, and a suitable
- overlay
-
-The overlay supports DT parameters that match the old module
-parameters, except that gpio_in_pull should be set using the
-strings "up", "down" or "off".
-
-lirc-rpi: Also support pinctrl-bcm2835 in non-DT mode
----
- arch/arm/boot/dts/lirc-rpi-overlay.dts | 57 ++++++++++++
- drivers/staging/media/lirc/lirc_rpi.c | 154 +++++++++++++++++++++++++++------
- 2 files changed, 183 insertions(+), 28 deletions(-)
- create mode 100644 arch/arm/boot/dts/lirc-rpi-overlay.dts
-
---- /dev/null
-+++ b/arch/arm/boot/dts/lirc-rpi-overlay.dts
-@@ -0,0 +1,57 @@
-+// Definitions for lirc-rpi module
-+/dts-v1/;
-+/plugin/;
-+
-+/ {
-+ compatible = "brcm,bcm2708";
-+
-+ fragment@0 {
-+ target-path = "/";
-+ __overlay__ {
-+ lirc_rpi: lirc_rpi {
-+ compatible = "rpi,lirc-rpi";
-+ pinctrl-names = "default";
-+ pinctrl-0 = <&lirc_pins>;
-+ status = "okay";
-+
-+ // Override autodetection of IR receiver circuit
-+ // (0 = active high, 1 = active low, -1 = no override )
-+ rpi,sense = <0xffffffff>;
-+
-+ // Software carrier
-+ // (0 = off, 1 = on)
-+ rpi,softcarrier = <1>;
-+
-+ // Invert output
-+ // (0 = off, 1 = on)
-+ rpi,invert = <0>;
-+
-+ // Enable debugging messages
-+ // (0 = off, 1 = on)
-+ rpi,debug = <0>;
-+ };
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&gpio>;
-+ __overlay__ {
-+ lirc_pins: lirc_pins {
-+ brcm,pins = <17 18>;
-+ brcm,function = <1 0>; // out in
-+ brcm,pull = <0 1>; // off down
-+ };
-+ };
-+ };
-+
-+ __overrides__ {
-+ gpio_out_pin = <&lirc_pins>,"brcm,pins:0";
-+ gpio_in_pin = <&lirc_pins>,"brcm,pins:4";
-+ gpio_in_pull = <&lirc_pins>,"brcm,pull:4";
-+
-+ sense = <&lirc_rpi>,"rpi,sense:0";
-+ softcarrier = <&lirc_rpi>,"rpi,softcarrier:0";
-+ invert = <&lirc_rpi>,"rpi,invert:0";
-+ debug = <&lirc_rpi>,"rpi,debug:0";
-+ };
-+};
---- a/drivers/staging/media/lirc/lirc_rpi.c
-+++ b/drivers/staging/media/lirc/lirc_rpi.c
-@@ -40,6 +40,7 @@
- #include <media/lirc_dev.h>
- #include <mach/gpio.h>
- #include <linux/gpio.h>
-+#include <linux/of_platform.h>
-
- #include <linux/platform_data/bcm2708.h>
-
-@@ -295,32 +296,117 @@ static int is_right_chip(struct gpio_chi
- return 0;
- }
-
-+static inline int read_bool_property(const struct device_node *np,
-+ const char *propname,
-+ bool *out_value)
-+{
-+ u32 value = 0;
-+ int err = of_property_read_u32(np, propname, &value);
-+ if (err == 0)
-+ *out_value = (value != 0);
-+ return err;
-+}
-+
-+static void read_pin_settings(struct device_node *node)
-+{
-+ u32 pin;
-+ int index;
-+
-+ for (index = 0;
-+ of_property_read_u32_index(
-+ node,
-+ "brcm,pins",
-+ index,
-+ &pin) == 0;
-+ index++) {
-+ u32 function;
-+ int err;
-+ err = of_property_read_u32_index(
-+ node,
-+ "brcm,function",
-+ index,
-+ &function);
-+ if (err == 0) {
-+ if (function == 1) /* Output */
-+ gpio_out_pin = pin;
-+ else if (function == 0) /* Input */
-+ gpio_in_pin = pin;
-+ }
-+ }
-+}
-+
- static int init_port(void)
- {
- int i, nlow, nhigh, ret;
-+ struct device_node *node;
-+
-+ node = lirc_rpi_dev->dev.of_node;
-
- gpiochip = gpiochip_find("bcm2708_gpio", is_right_chip);
-
-- if (!gpiochip)
-+ /*
-+ * Because of the lack of a setpull function, only support
-+ * pinctrl-bcm2835 if using device tree.
-+ */
-+ if (!gpiochip && node)
-+ gpiochip = gpiochip_find("pinctrl-bcm2835", is_right_chip);
-+
-+ if (!gpiochip) {
-+ pr_err(LIRC_DRIVER_NAME ": gpio chip not found!\n");
- return -ENODEV;
-+ }
-+
-+ if (node) {
-+ struct device_node *pins_node;
-+
-+ pins_node = of_parse_phandle(node, "pinctrl-0", 0);
-+ if (!pins_node) {
-+ printk(KERN_ERR LIRC_DRIVER_NAME
-+ ": pinctrl settings not found!\n");
-+ ret = -EINVAL;
-+ goto exit_init_port;
-+ }
-+
-+ read_pin_settings(pins_node);
-+
-+ of_property_read_u32(node, "rpi,sense", &sense);
-+
-+ read_bool_property(node, "rpi,softcarrier", &softcarrier);
-+
-+ read_bool_property(node, "rpi,invert", &invert);
-+
-+ read_bool_property(node, "rpi,debug", &debug);
-+
-+ }
-+ else
-+ {
-+ if (gpio_in_pin >= BCM2708_NR_GPIOS ||
-+ gpio_out_pin >= BCM2708_NR_GPIOS) {
-+ ret = -EINVAL;
-+ printk(KERN_ERR LIRC_DRIVER_NAME
-+ ": invalid GPIO pin(s) specified!\n");
-+ goto exit_init_port;
-+ }
-+
-+ if (gpio_request(gpio_out_pin, LIRC_DRIVER_NAME " ir/out")) {
-+ printk(KERN_ALERT LIRC_DRIVER_NAME
-+ ": cant claim gpio pin %d\n", gpio_out_pin);
-+ ret = -ENODEV;
-+ goto exit_init_port;
-+ }
-+
-+ if (gpio_request(gpio_in_pin, LIRC_DRIVER_NAME " ir/in")) {
-+ printk(KERN_ALERT LIRC_DRIVER_NAME
-+ ": cant claim gpio pin %d\n", gpio_in_pin);
-+ ret = -ENODEV;
-+ goto exit_gpio_free_out_pin;
-+ }
-+
-+ bcm2708_gpio_setpull(gpiochip, gpio_in_pin, gpio_in_pull);
-+ gpiochip->direction_input(gpiochip, gpio_in_pin);
-+ gpiochip->direction_output(gpiochip, gpio_out_pin, 1);
-+ }
-
-- if (gpio_request(gpio_out_pin, LIRC_DRIVER_NAME " ir/out")) {
-- printk(KERN_ALERT LIRC_DRIVER_NAME
-- ": cant claim gpio pin %d\n", gpio_out_pin);
-- ret = -ENODEV;
-- goto exit_init_port;
-- }
--
-- if (gpio_request(gpio_in_pin, LIRC_DRIVER_NAME " ir/in")) {
-- printk(KERN_ALERT LIRC_DRIVER_NAME
-- ": cant claim gpio pin %d\n", gpio_in_pin);
-- ret = -ENODEV;
-- goto exit_gpio_free_out_pin;
-- }
--
-- bcm2708_gpio_setpull(gpiochip, gpio_in_pin, gpio_in_pull);
-- gpiochip->direction_input(gpiochip, gpio_in_pin);
-- gpiochip->direction_output(gpiochip, gpio_out_pin, 1);
- gpiochip->set(gpiochip, gpio_out_pin, invert);
-
- irq_num = gpiochip->to_irq(gpiochip, gpio_in_pin);
-@@ -514,15 +600,23 @@ static struct lirc_driver driver = {
- .owner = THIS_MODULE,
- };
-
-+static const struct of_device_id lirc_rpi_of_match[] = {
-+ { .compatible = "rpi,lirc-rpi", },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, lirc_rpi_of_match);
-+
- static struct platform_driver lirc_rpi_driver = {
- .driver = {
- .name = LIRC_DRIVER_NAME,
- .owner = THIS_MODULE,
-+ .of_match_table = of_match_ptr(lirc_rpi_of_match),
- },
- };
-
- static int __init lirc_rpi_init(void)
- {
-+ struct device_node *node;
- int result;
-
- /* Init read buffer. */
-@@ -537,15 +631,26 @@ static int __init lirc_rpi_init(void)
- goto exit_buffer_free;
- }
-
-- lirc_rpi_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0);
-- if (!lirc_rpi_dev) {
-- result = -ENOMEM;
-- goto exit_driver_unregister;
-- }
-+ node = of_find_compatible_node(NULL, NULL,
-+ lirc_rpi_of_match[0].compatible);
-
-- result = platform_device_add(lirc_rpi_dev);
-- if (result)
-- goto exit_device_put;
-+ if (node) {
-+ /* DT-enabled */
-+ lirc_rpi_dev = of_find_device_by_node(node);
-+ WARN_ON(lirc_rpi_dev->dev.of_node != node);
-+ of_node_put(node);
-+ }
-+ else {
-+ lirc_rpi_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0);
-+ if (!lirc_rpi_dev) {
-+ result = -ENOMEM;
-+ goto exit_driver_unregister;
-+ }
-+
-+ result = platform_device_add(lirc_rpi_dev);
-+ if (result)
-+ goto exit_device_put;
-+ }
-
- return 0;
-
-@@ -577,13 +682,6 @@ static int __init lirc_rpi_init_module(v
- if (result)
- return result;
-
-- if (gpio_in_pin >= BCM2708_NR_GPIOS || gpio_out_pin >= BCM2708_NR_GPIOS) {
-- result = -EINVAL;
-- printk(KERN_ERR LIRC_DRIVER_NAME
-- ": invalid GPIO pin(s) specified!\n");
-- goto exit_rpi;
-- }
--
- result = init_port();
- if (result < 0)
- goto exit_rpi;
generated by cgit v1.1 at 2024-07-12 18:13:52 +0000