brcm2708: remove linux 3.10 support

[openwrt.git] / target / linux / brcm2708 / patches-3.10 / 0194-lirc_rpi-Use-read_current_timer-to-determine-transmi.patch

diff --git a/target/linux/brcm2708/patches-3.10/0194-lirc_rpi-Use-read_current_timer-to-determine-transmi.patch b/target/linux/brcm2708/patches-3.10/0194-lirc_rpi-Use-read_current_timer-to-determine-transmi.patch
deleted file mode 100644 (file)
index 66cd4a4..0000000
--- a/target/linux/brcm2708/patches-3.10/0194-lirc_rpi-Use-read_current_timer-to-determine-transmi.patch
+++ /dev/null
@@ -1,100 +0,0 @@
-From fd945928d6fd544d2f4bdde718b097b01bafb048 Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Tue, 22 Apr 2014 13:58:14 +0100
-Subject: [PATCH 194/196] lirc_rpi: Use read_current_timer to determine
- transmitter delay. Thanks to jjmz and others See:
- https://github.com/raspberrypi/linux/issues/525
-
----
- drivers/staging/media/lirc/lirc_rpi.c | 32 +++++++++++++++++---------------
- 1 file changed, 17 insertions(+), 15 deletions(-)
-
-diff --git a/drivers/staging/media/lirc/lirc_rpi.c b/drivers/staging/media/lirc/lirc_rpi.c
-index 8aee83f..57ffacf 100644
---- a/drivers/staging/media/lirc/lirc_rpi.c
-+++ b/drivers/staging/media/lirc/lirc_rpi.c
-@@ -30,6 +30,7 @@
- #include <linux/sched.h>
- #include <linux/kernel.h>
- #include <linux/time.h>
-+#include <linux/timex.h>
- #include <linux/string.h>
- #include <linux/delay.h>
- #include <linux/platform_device.h>
-@@ -41,7 +42,7 @@
- 
- #define LIRC_DRIVER_NAME "lirc_rpi"
- #define RBUF_LEN 256
--#define LIRC_TRANSMITTER_LATENCY 256
-+#define LIRC_TRANSMITTER_LATENCY 50
- 
- #ifndef MAX_UDELAY_MS
- #define MAX_UDELAY_US 5000
-@@ -107,19 +108,15 @@ static void safe_udelay(unsigned long usecs)
- static int init_timing_params(unsigned int new_duty_cycle,
-       unsigned int new_freq)
- {
--      /*
--       * period, pulse/space width are kept with 8 binary places -
--       * IE multiplied by 256.
--       */
--      if (256 * 1000000L / new_freq * new_duty_cycle / 100 <=
-+      if (1000 * 1000000L / new_freq * new_duty_cycle / 100 <=
-           LIRC_TRANSMITTER_LATENCY)
-               return -EINVAL;
--      if (256 * 1000000L / new_freq * (100 - new_duty_cycle) / 100 <=
-+      if (1000 * 1000000L / new_freq * (100 - new_duty_cycle) / 100 <=
-           LIRC_TRANSMITTER_LATENCY)
-               return -EINVAL;
-       duty_cycle = new_duty_cycle;
-       freq = new_freq;
--      period = 256 * 1000000L / freq;
-+      period = 1000 * 1000000L / freq;
-       pulse_width = period * duty_cycle / 100;
-       space_width = period - pulse_width;
-       dprintk("in init_timing_params, freq=%d pulse=%ld, "
-@@ -130,11 +127,14 @@ static int init_timing_params(unsigned int new_duty_cycle,
- static long send_pulse_softcarrier(unsigned long length)
- {
-       int flag;
--      unsigned long actual, target, d;
-+      unsigned long actual, target;
-+      unsigned long actual_us, initial_us, target_us;
- 
--      length <<= 8;
-+      length *= 1000;
- 
-       actual = 0; target = 0; flag = 0;
-+      read_current_timer(&actual_us);
-+
-       while (actual < length) {
-               if (flag) {
-                       gpiochip->set(gpiochip, gpio_out_pin, invert);
-@@ -143,17 +143,19 @@ static long send_pulse_softcarrier(unsigned long length)
-                       gpiochip->set(gpiochip, gpio_out_pin, !invert);
-                       target += pulse_width;
-               }
--              d = (target - actual -
--                   LIRC_TRANSMITTER_LATENCY + 128) >> 8;
-+              initial_us = actual_us;
-+              target_us = actual_us + (target - actual) / 1000;
-               /*
-                * Note - we've checked in ioctl that the pulse/space
-                * widths are big enough so that d is > 0
-                */
--              udelay(d);
--              actual += (d << 8) + LIRC_TRANSMITTER_LATENCY;
-+              if  ((int)(target_us - actual_us) > 0)
-+                      udelay(target_us - actual_us);
-+              read_current_timer(&actual_us);
-+              actual += (actual_us - initial_us) * 1000;
-               flag = !flag;
-       }
--      return (actual-length) >> 8;
-+      return (actual-length) / 1000;
- }
- 
- static long send_pulse(unsigned long length)
--- 
-1.9.1
-