diff options
Diffstat (limited to 'drivers/media/i2c/cx25840/cx25840-ir.c')
| -rw-r--r-- | drivers/media/i2c/cx25840/cx25840-ir.c | 24 |
1 files changed, 2 insertions, 22 deletions
diff --git a/drivers/media/i2c/cx25840/cx25840-ir.c b/drivers/media/i2c/cx25840/cx25840-ir.c index 2181c8a347fc..8cef9656c612 100644 --- a/drivers/media/i2c/cx25840/cx25840-ir.c +++ b/drivers/media/i2c/cx25840/cx25840-ir.c @@ -136,19 +136,6 @@ static inline u16 count_to_clock_divider(unsigned int d) return (u16) d; } -static inline u16 ns_to_clock_divider(unsigned int ns) -{ - return count_to_clock_divider( - DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ / 1000000 * ns, 1000)); -} - -static inline unsigned int clock_divider_to_ns(unsigned int divider) -{ - /* Period of the Rx or Tx clock in ns */ - return DIV_ROUND_CLOSEST((divider + 1) * 1000, - CX25840_IR_REFCLK_FREQ / 1000000); -} - static inline u16 carrier_freq_to_clock_divider(unsigned int freq) { return count_to_clock_divider( @@ -160,13 +147,6 @@ static inline unsigned int clock_divider_to_carrier_freq(unsigned int divider) return DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ, (divider + 1) * 16); } -static inline u16 freq_to_clock_divider(unsigned int freq, - unsigned int rollovers) -{ - return count_to_clock_divider( - DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ, freq * rollovers)); -} - static inline unsigned int clock_divider_to_freq(unsigned int divider, unsigned int rollovers) { @@ -216,7 +196,7 @@ static u32 clock_divider_to_resolution(u16 divider) { /* * Resolution is the duration of 1 tick of the readable portion of - * of the pulse width counter as read from the FIFO. The two lsb's are + * the pulse width counter as read from the FIFO. The two lsb's are * not readable, hence the << 2. This function returns ns. */ return DIV_ROUND_CLOSEST((1 << 2) * ((u32) divider + 1) * 1000, @@ -688,7 +668,7 @@ static int cx25840_ir_rx_read(struct v4l2_subdev *sd, u8 *buf, size_t count, } v = (unsigned) pulse_width_count_to_ns( - (u16) (p->hw_fifo_data & FIFO_RXTX), divider); + (u16)(p->hw_fifo_data & FIFO_RXTX), divider) / 1000; if (v > IR_MAX_DURATION) v = IR_MAX_DURATION; |