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| author | Yidi Lin <yidilin@chromium.org> | 2023-10-31 17:15:50 +0800 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-11-04 17:06:42 +0000 |
| commit | 2751d2922f7c87a6acf901a0008ac131bf7245db (patch) | |
| tree | 283504f4bf98e0b2331c8d8c501dd0abfe280369 /src/drivers | |
| parent | 909c317b2deb184d95c7d289cbe6603e209ed72d (diff) | |
| download | coreboot-2751d2922f7c87a6acf901a0008ac131bf7245db.tar.gz coreboot-2751d2922f7c87a6acf901a0008ac131bf7245db.tar.bz2 coreboot-2751d2922f7c87a6acf901a0008ac131bf7245db.zip | |
Use common GCD function
Change-Id: I30e4b02a9ca6a15c9bc4edcf4143ffa13a21a732
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78799
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/analogix/anx7625/anx7625.c | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/src/drivers/analogix/anx7625/anx7625.c b/src/drivers/analogix/anx7625/anx7625.c index e3a511131f0b..8726ac025482 100644 --- a/src/drivers/analogix/anx7625/anx7625.c +++ b/src/drivers/analogix/anx7625/anx7625.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <console/console.h> +#include <commonlib/bsd/gcd.h> #include <delay.h> #include <device/i2c_simple.h> #include <edid.h> @@ -152,30 +153,14 @@ static int wait_aux_op_finish(uint8_t bus) return 0; } -static unsigned long gcd(unsigned long a, unsigned long b) -{ - if (a == 0) - return b; - - while (b != 0) { - if (a > b) - a = a - b; - else - b = b - a; - } - - return a; -} - /* Reduce fraction a/b */ -static void anx7625_reduction_of_a_fraction(unsigned long *_a, - unsigned long *_b) +static void anx7625_reduction_of_a_fraction(u32 *_a, u32 *_b) { - unsigned long gcd_num; - unsigned long a = *_a, b = *_b, old_a, old_b; + u32 gcd_num; + u32 a = *_a, b = *_b, old_a, old_b; u32 denom = 1; - gcd_num = gcd(a, b); + gcd_num = gcd32(a, b); a /= gcd_num; b /= gcd_num; @@ -198,9 +183,7 @@ static void anx7625_reduction_of_a_fraction(unsigned long *_a, *_b = b; } -static int anx7625_calculate_m_n(u32 pixelclock, - unsigned long *m, unsigned long *n, - uint8_t *pd) +static int anx7625_calculate_m_n(u32 pixelclock, u32 *m, u32 *n, uint8_t *pd) { uint8_t post_divider = *pd; if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) { @@ -300,7 +283,7 @@ static int anx7625_odfc_config(uint8_t bus, uint8_t post_divider) static int anx7625_dsi_video_config(uint8_t bus, struct display_timing *dt) { - unsigned long m, n; + u32 m, n; u16 htotal; int ret; uint8_t post_divider = 0; @@ -311,7 +294,7 @@ static int anx7625_dsi_video_config(uint8_t bus, struct display_timing *dt) return -1; } - ANXINFO("compute M(%lu), N(%lu), divider(%d).\n", m, n, post_divider); + ANXINFO("compute M(%u), N(%u), divider(%d).\n", m, n, post_divider); /* configure pixel clock */ ret = anx7625_reg_write(bus, RX_P0_ADDR, PIXEL_CLOCK_L, |