6.14-stable review patch. If anyone has any objections, please let me know.
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From: Alain Volmat alain.volmat@foss.st.com
[ Upstream commit a3a91b6e62be24c5df47a800c367504cb41e502b ]
Within stm32_csi_start, use ARRAY_SIZE loop in order to search for the right setting. Avoid useless init of lanes_ie / lanes_en.
Signed-off-by: Alain Volmat alain.volmat@foss.st.com Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/st/stm32/stm32-csi.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/media/platform/st/stm32/stm32-csi.c b/drivers/media/platform/st/stm32/stm32-csi.c index 48941aae8c9b8..a4f8db608cedd 100644 --- a/drivers/media/platform/st/stm32/stm32-csi.c +++ b/drivers/media/platform/st/stm32/stm32-csi.c @@ -325,7 +325,6 @@ static const struct stm32_csi_mbps_phy_reg snps_stm32mp25[] = { { .mbps = 2400, .hsfreqrange = 0x47, .osc_freq_target = 442 }, { .mbps = 2450, .hsfreqrange = 0x48, .osc_freq_target = 451 }, { .mbps = 2500, .hsfreqrange = 0x49, .osc_freq_target = 460 }, - { /* sentinel */ } };
static const struct v4l2_mbus_framefmt fmt_default = { @@ -444,13 +443,13 @@ static void stm32_csi_phy_reg_write(struct stm32_csi_dev *csidev, static int stm32_csi_start(struct stm32_csi_dev *csidev, struct v4l2_subdev_state *state) { - const struct stm32_csi_mbps_phy_reg *phy_regs; + const struct stm32_csi_mbps_phy_reg *phy_regs = NULL; struct v4l2_mbus_framefmt *sink_fmt; const struct stm32_csi_fmts *fmt; unsigned long phy_clk_frate; + u32 lanes_ie, lanes_en; unsigned int mbps; - u32 lanes_ie = 0; - u32 lanes_en = 0; + unsigned int i; s64 link_freq; int ret; u32 ccfr; @@ -474,11 +473,14 @@ static int stm32_csi_start(struct stm32_csi_dev *csidev, mbps = div_s64(link_freq, 500000); dev_dbg(csidev->dev, "Computed Mbps: %u\n", mbps);
- for (phy_regs = snps_stm32mp25; phy_regs->mbps != 0; phy_regs++) - if (phy_regs->mbps >= mbps) + for (i = 0; i < ARRAY_SIZE(snps_stm32mp25); i++) { + if (snps_stm32mp25[i].mbps >= mbps) { + phy_regs = &snps_stm32mp25[i]; break; + } + }
- if (!phy_regs->mbps) { + if (!phy_regs) { dev_err(csidev->dev, "Unsupported PHY speed (%u Mbps)", mbps); return -ERANGE; } @@ -488,8 +490,8 @@ static int stm32_csi_start(struct stm32_csi_dev *csidev, phy_regs->osc_freq_target);
/* Prepare lanes related configuration bits */ - lanes_ie |= STM32_CSI_SR1_DL0_ERRORS; - lanes_en |= STM32_CSI_PCR_DL0EN; + lanes_ie = STM32_CSI_SR1_DL0_ERRORS; + lanes_en = STM32_CSI_PCR_DL0EN; if (csidev->num_lanes == 2) { lanes_ie |= STM32_CSI_SR1_DL1_ERRORS; lanes_en |= STM32_CSI_PCR_DL1EN;