This patch enable/disable cmos setting for mt2712 when streaming start/stop streaming.
Signed-off-by: Stu Hsieh <[email protected]> --- .../media/platform/mtk-mipicsi/mtk_mipicsi.c | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c index ea1edbc6401b..8bb40656bcb1 100644 --- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c +++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c @@ -88,9 +88,11 @@ #define CAMSV_MODULE_EN 0x10 #define CAMSV_FMT_SEL 0x14 #define CAMSV_INT_EN 0x18 +#define CAMSV_SW_CTL 0x20 #define CAMSV_CLK_EN 0x30 #define CAMSV_TG_SEN_MODE 0x500 +#define CAMSV_TG_VF_CON 0x504 #define CAMSV_TG_SEN_GRAB_PXL 0x508 #define CAMSV_TG_SEN_GRAB_LIN 0x50C #define CAMSV_TG_PATH_CFG 0x510 @@ -541,11 +543,41 @@ static void mtk_mipicsi_vb2_queue(struct vb2_buffer *vb) spin_unlock(&mipicsi->queue_lock); } +static void mtk_mipicsi_cmos_vf_enable(struct mtk_mipicsi_dev *mipicsi, + unsigned int max_camsv_num, + bool enable) +{ + void __iomem *base = NULL; + u32 mask = enable ? (u32)1 : ~(u32)1; + int i; + + for (i = 0; i < max_camsv_num; i++) + if (((mipicsi->link_reg_val >> i) & 0x01U) == 0x01U) { + if (enable) { + /*enable cmos_en and vf_en*/ + base = mipicsi->camsv[i]; + writel(readl(base + CAMSV_TG_SEN_MODE) | mask, + base + CAMSV_TG_SEN_MODE); + writel(readl(base + CAMSV_TG_VF_CON) | mask, + base + CAMSV_TG_VF_CON); + } else { + /*disable cmos_en and vf_en*/ + base = mipicsi->camsv[i]; + writel(readl(base + CAMSV_TG_SEN_MODE) & mask, + base + CAMSV_TG_SEN_MODE); + writel(readl(base + CAMSV_TG_VF_CON) & mask, + base + CAMSV_TG_VF_CON); + } + } +} + static int mtk_mipicsi_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) { struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vq); + mtk_mipicsi_cmos_vf_enable(mipicsi, mipicsi->camsv_num, true); + mipicsi->streamon = true; return 0; @@ -558,6 +590,8 @@ static void mtk_mipicsi_vb2_stop_streaming(struct vb2_queue *vq) struct mtk_mipicsi_buf *tmp = NULL; unsigned int index = 0; + mtk_mipicsi_cmos_vf_enable(mipicsi, mipicsi->camsv_num, false); + spin_lock(&mipicsi->queue_lock); while (list_empty(&(mipicsi->fb_list)) == 0) { list_for_each_entry_safe(buf, tmp, &(mipicsi->fb_list), queue) { -- 2.18.0
