[PATCH v12 1/4] soc: mediatek: mmsys: add CMDQ write register function
CK Hu
ck.hu at mediatek.com
Wed Mar 2 23:59:45 PST 2022
Hi, Moudy:
On Tue, 2022-03-01 at 18:02 +0800, Moudy Ho wrote:
> Adding the interface of writing MMSYS register via CMDQ,
> users do not need to parse related dts information.
>
> Signed-off-by: Moudy Ho <moudy.ho at mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno at collabora.com>
> ---
> drivers/soc/mediatek/Kconfig | 1 +
> drivers/soc/mediatek/mtk-mmsys.c | 30 ++++++++++++++++
> drivers/soc/mediatek/mtk-mmsys.h | 1 +
> include/linux/soc/mediatek/mtk-mmsys.h | 50
> ++++++++++++++++++++++++++
> 4 files changed, 82 insertions(+)
>
> diff --git a/drivers/soc/mediatek/Kconfig
> b/drivers/soc/mediatek/Kconfig
> index fdd8bc08569e..172bc7828aca 100644
> --- a/drivers/soc/mediatek/Kconfig
> +++ b/drivers/soc/mediatek/Kconfig
> @@ -69,6 +69,7 @@ config MTK_MMSYS
> bool "MediaTek MMSYS Support"
> default ARCH_MEDIATEK
> depends on HAS_IOMEM
> + select MTK_CMDQ
In MT8173, mmsys could work without CMDQ, so I think mmsys should not
select CMDQ.
> help
> Say yes here to add support for the MediaTek Multimedia
> Subsystem (MMSYS).
> diff --git a/drivers/soc/mediatek/mtk-mmsys.c
> b/drivers/soc/mediatek/mtk-mmsys.c
> index 50c797d70ddd..04c0c7de395e 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -8,9 +8,11 @@
> #include <linux/device.h>
> #include <linux/io.h>
> #include <linux/of_device.h>
> +#include <linux/of_address.h>
> #include <linux/platform_device.h>
> #include <linux/reset-controller.h>
> #include <linux/soc/mediatek/mtk-mmsys.h>
> +#include <linux/soc/mediatek/mtk-cmdq.h>
>
> #include "mtk-mmsys.h"
> #include "mt8167-mmsys.h"
> @@ -55,6 +57,7 @@ static const struct mtk_mmsys_driver_data
> mt8183_mmsys_driver_data = {
> .clk_driver = "clk-mt8183-mm",
> .routes = mmsys_mt8183_routing_table,
> .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table),
> + .has_gce_client_reg = true,
> };
>
> static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data =
> {
> @@ -81,6 +84,8 @@ struct mtk_mmsys {
> const struct mtk_mmsys_driver_data *data;
> spinlock_t lock; /* protects mmsys_sw_rst_b reg */
> struct reset_controller_dev rcdev;
> + struct cmdq_client_reg cmdq_base;
> + phys_addr_t addr;
> };
>
> void mtk_mmsys_ddp_connect(struct device *dev,
> @@ -120,6 +125,17 @@ void mtk_mmsys_ddp_disconnect(struct device
> *dev,
> }
> EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
>
> +void mtk_mmsys_write_reg_by_cmdq(struct device *dev,
> + struct mmsys_cmdq_cmd *cmd,
> + u32 offset, u32 value, u32 mask)
I would like mmsys provide high level interface rather than such low
level interface.
> +{
> + struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
> +
> + cmdq_pkt_write_mask(cmd->pkt, mmsys->cmdq_base.subsys,
> + mmsys->addr + offset, value, mask);
> +}
> +EXPORT_SYMBOL_GPL(mtk_mmsys_write_reg_by_cmdq);
> +
> static int mtk_mmsys_reset_update(struct reset_controller_dev
> *rcdev, unsigned long id,
> bool assert)
> {
> @@ -178,6 +194,7 @@ static int mtk_mmsys_probe(struct platform_device
> *pdev)
> struct platform_device *clks;
> struct platform_device *drm;
> struct mtk_mmsys *mmsys;
> + struct resource res;
> int ret;
>
> mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL);
> @@ -203,6 +220,19 @@ static int mtk_mmsys_probe(struct
> platform_device *pdev)
> return ret;
> }
>
> + if (of_address_to_resource(dev->of_node, 0, &res) < 0)
> + mmsys->addr = 0L;
> + else
> + mmsys->addr = res.start;
> +
> + if (mmsys->data->has_gce_client_reg) {
> + ret = cmdq_dev_get_client_reg(dev, &mmsys->cmdq_base,
> 0);
Add gce client reg in mmsys binding document [1].
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml?h=v5.17-rc6
> + if (ret) {
> + dev_err(dev, "No mediatek,gce-client-reg!\n");
> + return ret;
> + }
> + }
> +
> mmsys->data = of_device_get_match_data(&pdev->dev);
> platform_set_drvdata(pdev, mmsys);
>
> diff --git a/drivers/soc/mediatek/mtk-mmsys.h
> b/drivers/soc/mediatek/mtk-mmsys.h
> index 8b0ed05117ea..9fce400507d2 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.h
> +++ b/drivers/soc/mediatek/mtk-mmsys.h
> @@ -92,6 +92,7 @@ struct mtk_mmsys_driver_data {
> const char *clk_driver;
> const struct mtk_mmsys_routes *routes;
> const unsigned int num_routes;
> + bool has_gce_client_reg;
> };
>
> /*
> diff --git a/include/linux/soc/mediatek/mtk-mmsys.h
> b/include/linux/soc/mediatek/mtk-mmsys.h
> index 4bba275e235a..7f8ecc98d023 100644
> --- a/include/linux/soc/mediatek/mtk-mmsys.h
> +++ b/include/linux/soc/mediatek/mtk-mmsys.h
> @@ -7,8 +7,14 @@
> #define __MTK_MMSYS_H
>
> enum mtk_ddp_comp_id;
> +enum mtk_mdp_comp_id;
> struct device;
>
> +struct mmsys_cmdq_cmd {
> + struct cmdq_pkt *pkt;
> + s32 *event;
> +};
> +
> enum mtk_ddp_comp_id {
> DDP_COMPONENT_AAL0,
> DDP_COMPONENT_AAL1,
> @@ -45,6 +51,46 @@ enum mtk_ddp_comp_id {
> DDP_COMPONENT_ID_MAX,
> };
>
> +enum mtk_mdp_comp_id {
> + MDP_COMP_NONE = -1, /* Invalid engine */
> +
> + /* ISP */
> + MDP_COMP_WPEI = 0,
> + MDP_COMP_WPEO, /* 1 */
> + MDP_COMP_WPEI2, /* 2 */
> + MDP_COMP_WPEO2, /* 3 */
> + MDP_COMP_ISP_IMGI, /* 4 */
> + MDP_COMP_ISP_IMGO, /* 5 */
> + MDP_COMP_ISP_IMG2O, /* 6 */
> +
> + /* IPU */
> + MDP_COMP_IPUI, /* 7 */
> + MDP_COMP_IPUO, /* 8 */
> +
> + /* MDP */
> + MDP_COMP_CAMIN, /* 9 */
> + MDP_COMP_CAMIN2, /* 10 */
> + MDP_COMP_RDMA0, /* 11 */
> + MDP_COMP_AAL0, /* 12 */
> + MDP_COMP_CCORR0, /* 13 */
> + MDP_COMP_RSZ0, /* 14 */
> + MDP_COMP_RSZ1, /* 15 */
> + MDP_COMP_TDSHP0, /* 16 */
> + MDP_COMP_COLOR0, /* 17 */
> + MDP_COMP_PATH0_SOUT, /* 18 */
> + MDP_COMP_PATH1_SOUT, /* 19 */
> + MDP_COMP_WROT0, /* 20 */
> + MDP_COMP_WDMA, /* 21 */
> +
> + /* Dummy Engine */
> + MDP_COMP_RDMA1, /* 22 */
> + MDP_COMP_RSZ2, /* 23 */
> + MDP_COMP_TDSHP1, /* 24 */
> + MDP_COMP_WROT1, /* 25 */
> +
> + MDP_MAX_COMP_COUNT /* ALWAYS keep at the end */
> +};
Useless, remove this.
Regards,
CK
> +
> void mtk_mmsys_ddp_connect(struct device *dev,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next);
> @@ -53,4 +99,8 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
> enum mtk_ddp_comp_id cur,
> enum mtk_ddp_comp_id next);
>
> +void mtk_mmsys_write_reg_by_cmdq(struct device *dev,
> + struct mmsys_cmdq_cmd *cmd,
> + u32 alias_id, u32 value, u32 mask);
> +
> #endif /* __MTK_MMSYS_H */
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