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path: root/drivers/irda/ir_remote_con.c
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Diffstat (limited to 'drivers/irda/ir_remote_con.c')
-rw-r--r--drivers/irda/ir_remote_con.c390
1 files changed, 390 insertions, 0 deletions
diff --git a/drivers/irda/ir_remote_con.c b/drivers/irda/ir_remote_con.c
new file mode 100644
index 0000000..476a28f
--- /dev/null
+++ b/drivers/irda/ir_remote_con.c
@@ -0,0 +1,390 @@
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/cpu.h>
+#include <linux/cpumask.h>
+#include <linux/regulator/machine.h>
+#include <linux/ir_remote_con.h>
+#include <asm/irq.h>
+#include <mach/cpufreq.h>
+
+#define BIT_SIZE 32
+#define MAX_SIZE 1024
+#define NANO_SEC 1000000000
+#define MICRO_SEC 1000000
+
+static struct regulator *regulator;
+static int regulator_status = -1;
+
+struct ir_remocon_data {
+ struct mutex mutex;
+ struct work_struct work;
+ int gpio;
+ int pwr_en;
+ unsigned int signal[MAX_SIZE];
+};
+
+static int gpio_init(struct ir_remocon_data *data)
+{
+ int err;
+ err = gpio_request(data->gpio, "ir_gpio");
+ if (err < 0) {
+ pr_err("failed to request GPIO %d, error %d\n",
+ data->gpio, err);
+ } else
+ gpio_direction_output(data->gpio, 0);
+ return err;
+}
+
+static void ir_remocon_send(struct ir_remocon_data *data)
+{
+ unsigned int period, off_period = 0;
+ unsigned int duty;
+ unsigned int on, off = 0;
+ unsigned int i, j;
+ int ret;
+ static int cpu_lv = -1;
+
+ if (data->pwr_en == -1) {
+ regulator = regulator_get(NULL, "vled_3.3v");
+ if (IS_ERR(regulator))
+ goto out;
+
+ regulator_enable(regulator);
+ regulator_status = 1;
+ }
+
+ if (data->pwr_en != -1)
+ gpio_direction_output(data->pwr_en, 1);
+
+ __udelay(1000);
+
+ if (cpu_lv == -1) {
+ if (data->pwr_en == -1)
+ exynos_cpufreq_get_level(800000, &cpu_lv);
+ else
+ exynos_cpufreq_get_level(800000, &cpu_lv);
+ }
+
+ ret = exynos_cpufreq_lock(DVFS_LOCK_ID_IR_LED, cpu_lv);
+ if (ret < 0)
+ pr_err("%s: fail to lock cpufreq\n", __func__);
+
+ ret = exynos_cpufreq_upper_limit(DVFS_LOCK_ID_IR_LED, cpu_lv);
+ if (ret < 0)
+ pr_err("%s: fail to lock cpufreq(limit)\n", __func__);
+
+ if (data->pwr_en == -1)
+ period = (MICRO_SEC/data->signal[0])-3;
+ else
+ period = (MICRO_SEC/data->signal[0])-1;
+
+ duty = period/4;
+ on = duty;
+ off = period - duty;
+
+ local_irq_disable();
+ for (i = 1; i < MAX_SIZE; i += 2) {
+ if (data->signal[i] == 0)
+ break;
+
+ for (j = 0; j < data->signal[i]; j++) {
+ gpio_direction_output(data->gpio, 1);
+ __udelay(on);
+ gpio_direction_output(data->gpio, 0);
+ __udelay(off);
+ }
+
+ if (data->pwr_en == -1)
+ period = (MICRO_SEC/data->signal[0]);
+ else
+ period = (MICRO_SEC/data->signal[0])+1;
+
+ off_period = data->signal[i+1]*period;
+
+ if (off_period <= 9999) {
+ if (off_period > 1000) {
+ __udelay(off_period % 1000);
+ mdelay(off_period/1000);
+ } else
+ __udelay(off_period);
+ } else {
+ local_irq_enable();
+ __udelay(off_period % 1000);
+ mdelay(off_period/1000);
+ local_irq_disable();
+ }
+ }
+ gpio_direction_output(data->gpio, 1);
+ __udelay(on);
+ gpio_direction_output(data->gpio, 0);
+ __udelay(off);
+
+ local_irq_enable();
+ pr_info("%s end!\n", __func__);
+ exynos_cpufreq_lock_free(DVFS_LOCK_ID_IR_LED);
+ exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_IR_LED);
+
+ if (data->pwr_en != -1)
+ gpio_direction_output(data->pwr_en, 0);
+
+ if ((data->pwr_en == -1) && (regulator_status == 1)) {
+ regulator_force_disable(regulator);
+ regulator_put(regulator);
+
+ regulator_status = -1;
+ }
+out: ;
+}
+
+static void ir_remocon_send_test(struct ir_remocon_data *data)
+{
+ unsigned int period = 0;
+ int i;
+ period = MICRO_SEC / data->signal[0];
+
+ if (data->pwr_en == -1) {
+ regulator = regulator_get(NULL, "vled_3.3v");
+ if (IS_ERR(regulator))
+ goto out;
+
+ regulator_enable(regulator);
+ regulator_status = 1;
+ }
+
+ if (data->pwr_en != -1)
+ gpio_direction_output(data->pwr_en, 1);
+
+ local_irq_disable();
+ for (i = 1; i < MAX_SIZE; i++) {
+ if (data->signal[i] == 0)
+ break;
+ else if (data->signal[i] == 10) {
+ gpio_direction_output(data->gpio, 1);
+ __udelay(period);
+ } else if (data->signal[i] == 5) {
+ gpio_direction_output(data->gpio, 0);
+ __udelay(period);
+ }
+ }
+ local_irq_enable();
+
+ if (data->pwr_en != -1)
+ gpio_direction_output(data->pwr_en, 0);
+
+ if ((data->pwr_en == -1) && (regulator_status == 1)) {
+ regulator_force_disable(regulator);
+ regulator_put(regulator);
+
+ regulator_status = -1;
+ }
+out: ;
+}
+
+static void ir_remocon_work(struct work_struct *work)
+{
+ struct ir_remocon_data *data = container_of(work,
+ struct ir_remocon_data,
+ work);
+
+ ir_remocon_send(data);
+}
+
+static void ir_remocon_work_test(struct work_struct *work)
+{
+ struct ir_remocon_data *data = container_of(work,
+ struct ir_remocon_data,
+ work);
+
+ ir_remocon_send_test(data);
+}
+
+static ssize_t remocon_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct ir_remocon_data *data = dev_get_drvdata(dev);
+ int i;
+ unsigned int _data;
+
+ for (i = 0; i < MAX_SIZE; i++) {
+ if (sscanf(buf++, "%u", &_data) == 1) {
+ data->signal[i] = _data;
+ if (data->signal[i] == 0)
+ break;
+#if 0
+ pr_info("%d = %d,", i, data->signal[i]);
+#endif
+ while (_data > 0) {
+ buf++;
+ _data /= 10;
+ }
+ } else {
+ data->signal[i] = 0;
+ break;
+ }
+ }
+
+ if (!work_pending(&data->work))
+ schedule_work(&data->work);
+
+ return size;
+}
+
+static ssize_t remocon_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ir_remocon_data *data = dev_get_drvdata(dev);
+ int i;
+ char *bufp = buf;
+
+ for (i = 0; i < MAX_SIZE; i++) {
+ if (data->signal[i] == 0)
+ break;
+ else {
+ bufp += sprintf(bufp, "%u,", data->signal[i]);
+ pr_info("%u,", data->signal[i]);
+ }
+ }
+ return strlen(buf);
+}
+
+static DEVICE_ATTR(ir_send, 0664, remocon_show, remocon_store);
+static DEVICE_ATTR(ir_send_test, 0664, NULL, remocon_store);
+
+static ssize_t check_ir_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int _data = 1;
+ return sprintf(buf, "%d\n", _data);
+}
+
+static DEVICE_ATTR(check_ir, 0664, check_ir_show, NULL);
+
+static int __devinit ir_remocon_probe(struct platform_device *pdev)
+{
+ struct ir_remocon_data *data = pdev->dev.platform_data;
+ struct ir_remocon_data *data1 = pdev->dev.platform_data;
+ struct device *ir_remocon_dev;
+ struct device *ir_remocon_dev_test;
+ int error;
+
+ pr_info("********* Ir_LED : %s start!\n", __func__);
+
+ data = kzalloc(sizeof(struct ir_remocon_data), GFP_KERNEL);
+ if (NULL == data) {
+ pr_err("Failed to data allocate %s\n", __func__);
+ error = -ENOMEM;
+ goto err_free_mem;
+ }
+
+ data1 = kzalloc(sizeof(struct ir_remocon_data), GFP_KERNEL);
+ if (NULL == data1) {
+ pr_err("Failed to data1 allocate %s\n", __func__);
+ error = -ENOMEM;
+ goto err_free_mem;
+ }
+#if defined(CONFIG_MACH_P2) || defined(CONFIG_MACH_P4NOTE)
+ data->gpio = GPIO_IRDA_CONTROL;
+ data->pwr_en = -1;
+#endif
+#if defined(CONFIG_MACH_P8LTE) || defined(CONFIG_MACH_P8)
+ data->gpio = GPIO_IRDA_nINT;
+ data->pwr_en = GPIO_IRDA_EN;
+#endif
+
+ mutex_init(&data->mutex);
+ INIT_WORK(&data->work, ir_remocon_work);
+ INIT_WORK(&data1->work, ir_remocon_work_test);
+
+ error = gpio_init(data);
+ if (error)
+ pr_err("Failed to request gpio");
+
+ ir_remocon_dev = device_create(sec_class, NULL, 0, data, "sec_ir");
+ ir_remocon_dev_test =
+ device_create(sec_class, NULL, 0, data1, "sec_ir_test");
+
+ if (IS_ERR(ir_remocon_dev))
+ pr_err("Failed to create ir_remocon_dev device\n");
+
+ if (IS_ERR(ir_remocon_dev_test))
+ pr_err("Failed to create ir_remocon_dev_test device\n");
+
+ if (device_create_file(ir_remocon_dev, &dev_attr_ir_send) < 0)
+ pr_err("Failed to create device file(%s)!\n",
+ dev_attr_ir_send.attr.name);
+
+ if (device_create_file(ir_remocon_dev_test, &dev_attr_ir_send_test) < 0)
+ pr_err("Failed to create device file(%s)!\n",
+ dev_attr_ir_send_test.attr.name);
+
+ if (device_create_file(ir_remocon_dev, &dev_attr_check_ir) < 0)
+ pr_err("Failed to create device file(%s)!\n",
+ dev_attr_check_ir.attr.name);
+
+ return 0;
+
+ err_free_mem:
+ kfree(data);
+ kfree(data1);
+ return error;
+
+}
+
+static int __devexit ir_remocon_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ir_remocon_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ return 0;
+}
+
+static int ir_remocon_resume(struct platform_device *pdev)
+{
+ return 0;
+}
+#endif
+
+static struct platform_driver ir_remocon_device_driver = {
+ .probe = ir_remocon_probe,
+ .remove = __devexit_p(ir_remocon_remove),
+#ifdef CONFIG_PM
+ .suspend = ir_remocon_suspend,
+ .resume = ir_remocon_resume,
+#endif
+ .driver = {
+ .name = "ir_rc",
+ .owner = THIS_MODULE,
+ }
+};
+
+static int __init ir_remocon_init(void)
+{
+#if defined(CONFIG_IR_REMOCON_EUR)
+ if (system_rev >= 11)
+ return 0;
+#endif
+ return platform_driver_register(&ir_remocon_device_driver);
+}
+
+static void __exit ir_remocon_exit(void)
+{
+ platform_driver_unregister(&ir_remocon_device_driver);
+}
+
+module_init(ir_remocon_init);
+module_exit(ir_remocon_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SEC IR remote controller");