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media: rockchip: fec: support dvfs

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Signed-off-by: Xu Hongfei <xuhf@rock-chips.com>
Change-Id: Ie291e1bf8de0eaf00d3923866b1a3cead502a7de
This commit is contained in:
Xu Hongfei
2025-04-04 17:05:35 +08:00
parent 0892b14770
commit 8da27454ad
3 changed files with 39 additions and 6 deletions
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34
drivers/media/platform/rockchip/fec/fec_offline.c
View File

@@ -21,6 +21,37 @@ MODULE_PARM_DESC(debug, "Debug level (0-6)");
static void buf_del(struct file *file, int fd, bool is_all);
static void rkfec_dvfs(struct rkfec_offline_dev *ofl, int width)
{
int i, ret;
struct rkfec_hw_dev *hw = ofl->hw;
const struct fec_clk_info *rate_info = NULL;
unsigned long target_rate = 0;
for (i = 0; i < hw->clk_rate_tbl_num; i++) {
if (width <= hw->clk_rate_tbl[i].refer_data) {
rate_info = &hw->clk_rate_tbl[i];
break;
}
}
if (!rate_info)
rate_info = &hw->clk_rate_tbl[hw->clk_rate_tbl_num - 1];
target_rate = rate_info->clk_rate * 1000000;
ret = hw->set_clk(hw->clks[0], target_rate);
if (ret < 0)
v4l2_err(&ofl->v4l2_dev, "failed to set aclk rate: %d\n", ret);
ret = hw->set_clk(hw->clks[2], target_rate);
if (ret < 0)
v4l2_err(&ofl->v4l2_dev, "failed to set core clk rate: %d\n", ret);
v4l2_dbg(4, rkfec_debug, &ofl->v4l2_dev, "set clk rate: %ld\n",
target_rate);
}
#if IS_LINUX_VERSION_AT_LEAST_6_1
static void init_vb2(struct rkfec_offline_dev *ofl,
struct rkfec_offline_buf *buf)
@@ -257,6 +288,9 @@ static int fec_running(struct file *file, struct rkfec_in_out *buf)
dev_warn(hw->dev, "soft_reset not implemented\n");
}
if (hw->set_clk)
rkfec_dvfs(ofl, in_w);
init_completion(&ofl->cmpl);
switch (buf->in_fourcc) {

10
drivers/media/platform/rockchip/fec/hw.c
View File

@@ -22,12 +22,12 @@ static const char * const rv1126b_fec_clks[] = {
"clk_fec",
};
static void rkfec_set_clk_rate(struct clk *clk, unsigned long rate)
static int rkfec_set_clk_rate(struct clk *clk, unsigned long rate)
{
if (rkfec_clk_dbg)
return;
return 0;
clk_set_rate(clk, rate);
return clk_set_rate(clk, rate);
}
static void rkfec_soft_reset(struct rkfec_hw_dev *hw)
@@ -92,9 +92,6 @@ static int enable_sys_clk(struct rkfec_hw_dev *dev)
goto err;
}
rkfec_set_clk_rate(dev->clks[0],
dev->clk_rate_tbl[dev->clk_rate_tbl_num - 1].clk_rate * 1000000);
return 0;
err:
@@ -287,6 +284,7 @@ static int rkfec_hw_probe(struct platform_device *pdev)
hw_dev->is_dma_config = false;
hw_dev->mem_ops = &vb2_cma_sg_memops;
hw_dev->soft_reset = rkfec_soft_reset;
hw_dev->set_clk = rkfec_set_clk_rate;
rkfec_register_offline(hw_dev);

1
drivers/media/platform/rockchip/fec/hw.h
View File

@@ -73,6 +73,7 @@ struct rkfec_hw_dev {
enum rkfec_fec_ver fec_ver;
void (*soft_reset)(struct rkfec_hw_dev *hw);
int (*set_clk)(struct clk *clk, unsigned long rate);
};
#ifndef IS_LINUX_VERSION_AT_LEAST_6_1