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Subject: media: rc: ir-spi: fix duty cycle
Author: Sean Young <s...@mess.org>
Date: Sat Jan 27 09:05:37 2018 -0500
Calculate the pulse rather than having a few preset values.
Signed-off-by: Sean Young <s...@mess.org>
Acked-by: Andi Shyti <andi.sh...@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
drivers/media/rc/ir-spi.c | 24 ++----------------------
1 file changed, 2 insertions(+), 22 deletions(-)
---
diff --git a/drivers/media/rc/ir-spi.c b/drivers/media/rc/ir-spi.c
index a32a84ae2d0b..7163d5ce2e64 100644
--- a/drivers/media/rc/ir-spi.c
+++ b/drivers/media/rc/ir-spi.c
@@ -15,21 +15,11 @@
#define IR_SPI_DRIVER_NAME "ir-spi"
-/* pulse value for different duty cycles */
-#define IR_SPI_PULSE_DC_50 0xff00
-#define IR_SPI_PULSE_DC_60 0xfc00
-#define IR_SPI_PULSE_DC_70 0xf800
-#define IR_SPI_PULSE_DC_75 0xf000
-#define IR_SPI_PULSE_DC_80 0xc000
-#define IR_SPI_PULSE_DC_90 0x8000
-
#define IR_SPI_DEFAULT_FREQUENCY 38000
-#define IR_SPI_BIT_PER_WORD 8
#define IR_SPI_MAX_BUFSIZE 4096
struct ir_spi_data {
u32 freq;
- u8 duty_cycle;
bool negated;
u16 tx_buf[IR_SPI_MAX_BUFSIZE];
@@ -105,19 +95,9 @@ static int ir_spi_set_tx_carrier(struct rc_dev *dev, u32
carrier)
static int ir_spi_set_duty_cycle(struct rc_dev *dev, u32 duty_cycle)
{
struct ir_spi_data *idata = dev->priv;
+ int bits = (duty_cycle * 15) / 100;
- if (duty_cycle >= 90)
- idata->pulse = IR_SPI_PULSE_DC_90;
- else if (duty_cycle >= 80)
- idata->pulse = IR_SPI_PULSE_DC_80;
- else if (duty_cycle >= 75)
- idata->pulse = IR_SPI_PULSE_DC_75;
- else if (duty_cycle >= 70)
- idata->pulse = IR_SPI_PULSE_DC_70;
- else if (duty_cycle >= 60)
- idata->pulse = IR_SPI_PULSE_DC_60;
- else
- idata->pulse = IR_SPI_PULSE_DC_50;
+ idata->pulse = GENMASK(bits, 0);
if (idata->negated) {
idata->pulse = ~idata->pulse;
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