---
drivers/media/i2c/imx283.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/media/i2c/imx283.c b/drivers/media/i2c/imx283.c
index 81fe2d4fd4d3..ace8f65aa6b3 100644
--- a/drivers/media/i2c/imx283.c
+++ b/drivers/media/i2c/imx283.c
@@ -450,12 +450,12 @@ static const struct imx283_mode supported_modes_12bit[] = {
.bpp = 12,
.width = 2736,
.height = 1824,
- .min_hmax = 1870, /* Pixels (362 * 360/72 + padding) */
+ .min_hmax = 2414, /* Pixels (362 * 480MHz/72MHz + padding) */
.min_vmax = 3840, /* Lines */
/* 50.00 FPS */
- .default_hmax = 1870, /* 362 @ 360MHz/72MHz */
- .default_vmax = 3960,
+ .default_hmax = 2500, /* 375 @ 480MHz/72Mhz */
+ .default_vmax = 3840,
.veff = 1824,
.vst = 0,
@@ -483,7 +483,7 @@ static const struct imx283_mode supported_modes_10bit[] = {
.min_vmax = 3793,
/* 25.00 FPS */
- .default_hmax = 1500, /* 750 @ 576MHz / 72MHz */
+ .default_hmax = 6000, /* 750 @ 576MHz / 72MHz */
.default_vmax = 3840,
.min_shr = 10,
@@ -568,12 +568,15 @@ static inline void get_mode_table(unsigned int code,
static u64 imx283_pixel_rate(struct imx283 *imx283,
const struct imx283_mode *mode)
{
+ u64 link_frequency = link_frequencies[__ffs(imx283->link_freq_bitmap)];
unsigned int bpp = mode->bpp;
const unsigned int ddr = 2; /* Double Data Rate */
const unsigned int lanes = 4; /* Only 4 lane support */
- u64 link_frequency = link_frequencies[__ffs(imx283->link_freq_bitmap)];
+ u64 numerator = link_frequency * ddr * lanes;
- return link_frequency * ddr * lanes / bpp;
+ do_div(numerator, bpp);
+
+ return numerator;
}
/* Convert from a variable pixel_rate to 72 MHz clock cycles */
@@ -588,8 +591,11 @@ static u64 imx283_internal_clock(unsigned int pixel_rate, unsigned int pixels)
*/
const u32 iclk_pre = 72;
const u32 pclk_pre = pixel_rate / HZ_PER_MHZ;
+ u64 numerator = pixels * iclk_pre;
+
+ do_div(numerator, pclk_pre);
- return pixels * iclk_pre / pclk_pre;
+ return numerator;
}
/* Internal clock (72MHz) to Pixel Rate clock (Variable) */
@@ -604,8 +610,11 @@ static u64 imx283_iclk_to_pix(unsigned int pixel_rate, unsigned int cycles)
*/
const u32 iclk_pre = 72;
const u32 pclk_pre = pixel_rate / HZ_PER_MHZ;
+ u64 numerator = cycles * pclk_pre;
+
+ do_div(numerator, iclk_pre);
- return cycles * pclk_pre / iclk_pre;
+ return numerator;
}
/* Determine the exposure based on current hmax, vmax and a given SHR */
--
2.43.0
