diff options
Diffstat (limited to 'drivers/media/usb/au0828/au0828-input.c')
| -rw-r--r-- | drivers/media/usb/au0828/au0828-input.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c index fd0d3a90ce7d..63995f97dc65 100644 --- a/drivers/media/usb/au0828/au0828-input.c +++ b/drivers/media/usb/au0828/au0828-input.c @@ -17,6 +17,8 @@ GNU General Public License for more details. */ +#include "au0828.h" + #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> @@ -25,7 +27,9 @@ #include <linux/slab.h> #include <media/rc-core.h> -#include "au0828.h" +static int disable_ir; +module_param(disable_ir, int, 0444); +MODULE_PARM_DESC(disable_ir, "disable infrared remote support"); struct au0828_rc { struct au0828_dev *dev; @@ -90,14 +94,19 @@ static int au8522_rc_read(struct au0828_rc *ir, u16 reg, int val, static int au8522_rc_andor(struct au0828_rc *ir, u16 reg, u8 mask, u8 value) { int rc; - char buf; + char buf, oldbuf; rc = au8522_rc_read(ir, reg, -1, &buf, 1); if (rc < 0) return rc; + oldbuf = buf; buf = (buf & ~mask) | (value & mask); + /* Nothing to do, just return */ + if (buf == oldbuf) + return 0; + return au8522_rc_write(ir, reg, buf); } @@ -122,8 +131,11 @@ static int au0828_get_key_au8522(struct au0828_rc *ir) /* Check IR int */ rc = au8522_rc_read(ir, 0xe1, -1, buf, 1); - if (rc < 0 || !(buf[0] & (1 << 4))) + if (rc < 0 || !(buf[0] & (1 << 4))) { + /* Be sure that IR is enabled */ + au8522_rc_set(ir, 0xe0, 1 << 4); return 0; + } /* Something arrived. Get the data */ rc = au8522_rc_read(ir, 0xe3, 0x11, buf, sizeof(buf)); @@ -135,8 +147,6 @@ static int au0828_get_key_au8522(struct au0828_rc *ir) /* Disable IR */ au8522_rc_clear(ir, 0xe0, 1 << 4); - usleep_range(45000, 46000); - /* Enable IR */ au8522_rc_set(ir, 0xe0, 1 << 4); @@ -243,10 +253,10 @@ static void au0828_rc_stop(struct rc_dev *rc) { struct au0828_rc *ir = rc->priv; + cancel_delayed_work_sync(&ir->work); + /* Disable IR */ au8522_rc_clear(ir, 0xe0, 1 << 4); - - cancel_delayed_work_sync(&ir->work); } static int au0828_probe_i2c_ir(struct au0828_dev *dev) @@ -273,7 +283,7 @@ int au0828_rc_register(struct au0828_dev *dev) int err = -ENOMEM; u16 i2c_rc_dev_addr = 0; - if (!dev->board.has_ir_i2c) + if (!dev->board.has_ir_i2c || disable_ir) return 0; i2c_rc_dev_addr = au0828_probe_i2c_ir(dev); @@ -368,8 +378,13 @@ int au0828_rc_suspend(struct au0828_dev *dev) if (!ir) return 0; + pr_info("Stopping RC\n"); + cancel_delayed_work_sync(&ir->work); + /* Disable IR */ + au8522_rc_clear(ir, 0xe0, 1 << 4); + return 0; } @@ -380,6 +395,11 @@ int au0828_rc_resume(struct au0828_dev *dev) if (!ir) return 0; + pr_info("Restarting RC\n"); + + /* Enable IR */ + au8522_rc_set(ir, 0xe0, 1 << 4); + schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); return 0; |