diff options
| -rw-r--r-- | arch/arm/mach-omap2/board-rx51-peripherals.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pdata-quirks.c | 1 | ||||
| -rw-r--r-- | drivers/media/rc/ir-rx51.c | 85 | ||||
| -rw-r--r-- | include/linux/platform_data/media/ir-rx51.h | 2 |
4 files changed, 44 insertions, 45 deletions
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c index 9a7073949d1d..e487575a86ca 100644 --- a/arch/arm/mach-omap2/board-rx51-peripherals.c +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c @@ -1242,7 +1242,6 @@ static struct pwm_omap_dmtimer_pdata __maybe_unused pwm_dmtimer_pdata = { #if defined(CONFIG_IR_RX51) || defined(CONFIG_IR_RX51_MODULE) static struct lirc_rx51_platform_data rx51_lirc_data = { .set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat, - .pwm_timer = 9, /* Use GPT 9 for CIR */ #if IS_ENABLED(CONFIG_OMAP_DM_TIMER) .dmtimer = &pwm_dmtimer_pdata, #endif diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 6571ad959908..278bb8f3b77b 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -491,7 +491,6 @@ static struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = { static struct lirc_rx51_platform_data __maybe_unused rx51_lirc_data = { .set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat, - .pwm_timer = 9, /* Use GPT 9 for CIR */ #if IS_ENABLED(CONFIG_OMAP_DM_TIMER) .dmtimer = &pwm_dmtimer_pdata, #endif diff --git a/drivers/media/rc/ir-rx51.c b/drivers/media/rc/ir-rx51.c index da839c3a8c8b..5096ef3108d9 100644 --- a/drivers/media/rc/ir-rx51.c +++ b/drivers/media/rc/ir-rx51.c @@ -12,13 +12,7 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ - #include <linux/clk.h> #include <linux/module.h> #include <linux/interrupt.h> @@ -26,6 +20,7 @@ #include <linux/platform_device.h> #include <linux/sched.h> #include <linux/wait.h> +#include <linux/pwm.h> #include <media/lirc.h> #include <media/lirc_dev.h> @@ -43,7 +38,7 @@ #define TIMER_MAX_VALUE 0xffffffff struct lirc_rx51 { - pwm_omap_dmtimer *pwm_timer; + struct pwm_device *pwm; pwm_omap_dmtimer *pulse_timer; struct pwm_omap_dmtimer_pdata *dmtimer; struct device *dev; @@ -58,32 +53,28 @@ struct lirc_rx51 { int wbuf[WBUF_LEN]; int wbuf_index; unsigned long device_is_open; - int pwm_timer_num; }; static void lirc_rx51_on(struct lirc_rx51 *lirc_rx51) { - lirc_rx51->dmtimer->set_pwm(lirc_rx51->pwm_timer, 0, 1, - PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW_AND_COMPARE); + pwm_enable(lirc_rx51->pwm); } static void lirc_rx51_off(struct lirc_rx51 *lirc_rx51) { - lirc_rx51->dmtimer->set_pwm(lirc_rx51->pwm_timer, 0, 1, - PWM_OMAP_DMTIMER_TRIGGER_NONE); + pwm_disable(lirc_rx51->pwm); } static int init_timing_params(struct lirc_rx51 *lirc_rx51) { - u32 load, match; - - load = -(lirc_rx51->fclk_khz * 1000 / lirc_rx51->freq); - match = -(lirc_rx51->duty_cycle * -load / 100); - lirc_rx51->dmtimer->set_load(lirc_rx51->pwm_timer, 1, load); - lirc_rx51->dmtimer->set_match(lirc_rx51->pwm_timer, 1, match); - lirc_rx51->dmtimer->write_counter(lirc_rx51->pwm_timer, TIMER_MAX_VALUE - 2); - lirc_rx51->dmtimer->start(lirc_rx51->pwm_timer); + struct pwm_device *pwm = lirc_rx51->pwm; + int duty, period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, lirc_rx51->freq); + + duty = DIV_ROUND_CLOSEST(lirc_rx51->duty_cycle * period, 100); lirc_rx51->dmtimer->set_int_enable(lirc_rx51->pulse_timer, 0); + + pwm_config(pwm, duty, period); + lirc_rx51->dmtimer->start(lirc_rx51->pulse_timer); lirc_rx51->match = 0; @@ -165,7 +156,7 @@ end: /* Stop TX here */ lirc_rx51_off(lirc_rx51); lirc_rx51->wbuf_index = -1; - lirc_rx51->dmtimer->stop(lirc_rx51->pwm_timer); + lirc_rx51->dmtimer->stop(lirc_rx51->pulse_timer); lirc_rx51->dmtimer->set_int_enable(lirc_rx51->pulse_timer, 0); wake_up_interruptible(&lirc_rx51->wqueue); @@ -176,13 +167,13 @@ end: static int lirc_rx51_init_port(struct lirc_rx51 *lirc_rx51) { struct clk *clk_fclk; - int retval, pwm_timer = lirc_rx51->pwm_timer_num; + int retval; - lirc_rx51->pwm_timer = lirc_rx51->dmtimer->request_specific(pwm_timer); - if (lirc_rx51->pwm_timer == NULL) { - dev_err(lirc_rx51->dev, ": Error requesting GPT%d timer\n", - pwm_timer); - return -EBUSY; + lirc_rx51->pwm = pwm_get(lirc_rx51->dev, NULL); + if (IS_ERR(lirc_rx51->pwm)) { + retval = PTR_ERR(lirc_rx51->pwm); + dev_err(lirc_rx51->dev, ": pwm_get failed: %d\n", retval); + return retval; } lirc_rx51->pulse_timer = lirc_rx51->dmtimer->request(); @@ -192,15 +183,11 @@ static int lirc_rx51_init_port(struct lirc_rx51 *lirc_rx51) goto err1; } - lirc_rx51->dmtimer->set_source(lirc_rx51->pwm_timer, - PWM_OMAP_DMTIMER_SRC_SYS_CLK); lirc_rx51->dmtimer->set_source(lirc_rx51->pulse_timer, PWM_OMAP_DMTIMER_SRC_SYS_CLK); - - lirc_rx51->dmtimer->enable(lirc_rx51->pwm_timer); lirc_rx51->dmtimer->enable(lirc_rx51->pulse_timer); - - lirc_rx51->irq_num = lirc_rx51->dmtimer->get_irq(lirc_rx51->pulse_timer); + lirc_rx51->irq_num = + lirc_rx51->dmtimer->get_irq(lirc_rx51->pulse_timer); retval = request_irq(lirc_rx51->irq_num, lirc_rx51_interrupt_handler, IRQF_SHARED, "lirc_pulse_timer", lirc_rx51); if (retval) { @@ -208,7 +195,7 @@ static int lirc_rx51_init_port(struct lirc_rx51 *lirc_rx51) goto err2; } - clk_fclk = lirc_rx51->dmtimer->get_fclk(lirc_rx51->pwm_timer); + clk_fclk = lirc_rx51->dmtimer->get_fclk(lirc_rx51->pulse_timer); lirc_rx51->fclk_khz = clk_get_rate(clk_fclk) / 1000; return 0; @@ -216,7 +203,7 @@ static int lirc_rx51_init_port(struct lirc_rx51 *lirc_rx51) err2: lirc_rx51->dmtimer->free(lirc_rx51->pulse_timer); err1: - lirc_rx51->dmtimer->free(lirc_rx51->pwm_timer); + pwm_put(lirc_rx51->pwm); return retval; } @@ -226,11 +213,10 @@ static int lirc_rx51_free_port(struct lirc_rx51 *lirc_rx51) lirc_rx51->dmtimer->set_int_enable(lirc_rx51->pulse_timer, 0); free_irq(lirc_rx51->irq_num, lirc_rx51); lirc_rx51_off(lirc_rx51); - lirc_rx51->dmtimer->disable(lirc_rx51->pwm_timer); lirc_rx51->dmtimer->disable(lirc_rx51->pulse_timer); - lirc_rx51->dmtimer->free(lirc_rx51->pwm_timer); lirc_rx51->dmtimer->free(lirc_rx51->pulse_timer); lirc_rx51->wbuf_index = -1; + pwm_put(lirc_rx51->pwm); return 0; } @@ -387,7 +373,6 @@ static int lirc_rx51_release(struct inode *inode, struct file *file) } static struct lirc_rx51 lirc_rx51 = { - .freq = 38000, .duty_cycle = 50, .wbuf_index = -1, }; @@ -445,14 +430,34 @@ static int lirc_rx51_resume(struct platform_device *dev) static int lirc_rx51_probe(struct platform_device *dev) { + struct pwm_device *pwm; + lirc_rx51_driver.features = LIRC_RX51_DRIVER_FEATURES; lirc_rx51.pdata = dev->dev.platform_data; + + if (!lirc_rx51.pdata) { + dev_err(&dev->dev, "Platform Data is missing\n"); + return -ENXIO; + } + if (!lirc_rx51.pdata->dmtimer) { dev_err(&dev->dev, "no dmtimer?\n"); return -ENODEV; } - lirc_rx51.pwm_timer_num = lirc_rx51.pdata->pwm_timer; + pwm = pwm_get(&dev->dev, NULL); + if (IS_ERR(pwm)) { + int err = PTR_ERR(pwm); + + if (err != -EPROBE_DEFER) + dev_err(&dev->dev, "pwm_get failed: %d\n", err); + return err; + } + + /* Use default, in case userspace does not set the carrier */ + lirc_rx51.freq = DIV_ROUND_CLOSEST(pwm_get_period(pwm), NSEC_PER_SEC); + pwm_put(pwm); + lirc_rx51.dmtimer = lirc_rx51.pdata->dmtimer; lirc_rx51.dev = &dev->dev; lirc_rx51_driver.dev = &dev->dev; @@ -464,8 +469,6 @@ static int lirc_rx51_probe(struct platform_device *dev) lirc_rx51_driver.minor); return lirc_rx51_driver.minor; } - dev_info(lirc_rx51.dev, "registration ok, minor: %d, pwm: %d\n", - lirc_rx51_driver.minor, lirc_rx51.pwm_timer_num); return 0; } diff --git a/include/linux/platform_data/media/ir-rx51.h b/include/linux/platform_data/media/ir-rx51.h index 3038120ca46e..6acf22d497f7 100644 --- a/include/linux/platform_data/media/ir-rx51.h +++ b/include/linux/platform_data/media/ir-rx51.h @@ -2,8 +2,6 @@ #define _LIRC_RX51_H struct lirc_rx51_platform_data { - int pwm_timer; - int(*set_max_mpu_wakeup_lat)(struct device *dev, long t); struct pwm_omap_dmtimer_pdata *dmtimer; }; |