[PATCH v2, 1/3] drm/mediatek: Separate aal module

From: Yongqiang Niu
Date: Sun Jul 11 2021 - 21:03:09 EST

mt8183 aal has no gamma function

Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/Makefile | 3 +-
drivers/gpu/drm/mediatek/mtk_disp_aal.c | 166 ++++++++++++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 9 ++
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 39 +------
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 6 +-
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
6 files changed, 184 insertions(+), 40 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_aal.c

diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index dc54a7a..29098d7 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0

-mediatek-drm-y := mtk_disp_ccorr.o \
+mediatek-drm-y := mtk_disp_aal.o \
+ mtk_disp_ccorr.o \
mtk_disp_color.o \
mtk_disp_gamma.o \
mtk_disp_ovl.o \
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
new file mode 100644
index 0000000..fb212e96
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-cmdq.h>
+
+#include "mtk_disp_drv.h"
+#include "mtk_drm_crtc.h"
+#include "mtk_drm_ddp_comp.h"
+
+#define DISP_AAL_EN 0x0000
+#define AAL_EN BIT(0)
+#define DISP_AAL_SIZE 0x0030
+
+
+struct mtk_disp_aal_data {
+ bool has_gamma;
+};
+
+/**
+ * struct mtk_disp_aal - DISP_AAL driver structure
+ * @ddp_comp - structure containing type enum and hardware resources
+ * @crtc - associated crtc to report irq events to
+ */
+struct mtk_disp_aal {
+ struct clk *clk;
+ void __iomem *regs;
+ struct cmdq_client_reg cmdq_reg;
+ const struct mtk_disp_aal_data *data;
+};
+
+int mtk_aal_clk_enable(struct device *dev)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ return clk_prepare_enable(aal->clk);
+}
+
+void mtk_aal_clk_disable(struct device *dev)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(aal->clk);
+}
+
+void mtk_aal_config(struct device *dev, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ mtk_ddp_write(cmdq_pkt, w << 16 | h, &aal->cmdq_reg, aal->regs, DISP_AAL_SIZE);
+}
+
+void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ if (aal->data && aal->data->has_gamma)
+ mtk_gamma_set_common(aal->regs, state);
+}
+
+void mtk_aal_start(struct device *dev)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ writel(AAL_EN, aal->regs + DISP_AAL_EN);
+}
+
+void mtk_aal_stop(struct device *dev)
+{
+ struct mtk_disp_aal *aal = dev_get_drvdata(dev);
+
+ writel_relaxed(0x0, aal->regs + DISP_AAL_EN);
+}
+
+static int mtk_disp_aal_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ return 0;
+}
+
+static void mtk_disp_aal_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+}
+
+static const struct component_ops mtk_disp_aal_component_ops = {
+ .bind = mtk_disp_aal_bind,
+ .unbind = mtk_disp_aal_unbind,
+};
+
+static int mtk_disp_aal_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_disp_aal *priv;
+ struct resource *res;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(dev, "failed to get aal clk\n");
+ return PTR_ERR(priv->clk);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(priv->regs)) {
+ dev_err(dev, "failed to ioremap aal\n");
+ return PTR_ERR(priv->regs);
+ }
+
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
+ if (ret)
+ dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
+#endif
+
+ priv->data = of_device_get_match_data(dev);
+ platform_set_drvdata(pdev, priv);
+
+ ret = component_add(dev, &mtk_disp_aal_component_ops);
+ if (ret)
+ dev_err(dev, "Failed to add component: %d\n", ret);
+
+ return ret;
+}
+
+static int mtk_disp_aal_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &mtk_disp_aal_component_ops);
+
+ return 0;
+}
+
+static const struct mtk_disp_aal_data mt8173_aal_driver_data = {
+ .has_gamma = true,
+};
+
+static const struct of_device_id mtk_disp_aal_driver_dt_match[] = {
+ { .compatible = "mediatek,mt8173-disp-aal",
+ .data = &mt8173_aal_driver_data},
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtk_disp_aal_driver_dt_match);
+
+struct platform_driver mtk_disp_aal_driver = {
+ .probe = mtk_disp_aal_probe,
+ .remove = mtk_disp_aal_remove,
+ .driver = {
+ .name = "mediatek-disp-aal",
+ .owner = THIS_MODULE,
+ .of_match_table = mtk_disp_aal_driver_dt_match,
+ },
+};
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index cafd9df..86c3068 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -9,6 +9,15 @@
#include <linux/soc/mediatek/mtk-cmdq.h>
#include "mtk_drm_plane.h"

+int mtk_aal_clk_enable(struct device *dev);
+void mtk_aal_clk_disable(struct device *dev);
+void mtk_aal_config(struct device *dev, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
+void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state);
+void mtk_aal_start(struct device *dev);
+void mtk_aal_stop(struct device *dev);
+
void mtk_ccorr_ctm_set(struct device *dev, struct drm_crtc_state *state);
int mtk_ccorr_clk_enable(struct device *dev);
void mtk_ccorr_clk_disable(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index 75bc00e..f367142 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -32,9 +32,6 @@

#define DISP_REG_UFO_START 0x0000

-#define DISP_AAL_EN 0x0000
-#define DISP_AAL_SIZE 0x0030
-
#define DISP_DITHER_EN 0x0000
#define DITHER_EN BIT(0)
#define DISP_DITHER_CFG 0x0020
@@ -48,8 +45,6 @@

#define UFO_BYPASS BIT(2)

-#define AAL_EN BIT(0)
-
#define DISP_DITHERING BIT(2)
#define DITHER_LSB_ERR_SHIFT_R(x) (((x) & 0x7) << 28)
#define DITHER_OVFLW_BIT_R(x) (((x) & 0x7) << 24)
@@ -190,36 +185,6 @@ static void mtk_ufoe_start(struct device *dev)
writel(UFO_BYPASS, priv->regs + DISP_REG_UFO_START);
}

-static void mtk_aal_config(struct device *dev, unsigned int w,
- unsigned int h, unsigned int vrefresh,
- unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
-{
- struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
-
- mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_AAL_SIZE);
-}
-
-static void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
-{
- struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
-
- mtk_gamma_set_common(priv->regs, state);
-}
-
-static void mtk_aal_start(struct device *dev)
-{
- struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
-
- writel(AAL_EN, priv->regs + DISP_AAL_EN);
-}
-
-static void mtk_aal_stop(struct device *dev)
-{
- struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
-
- writel_relaxed(0x0, priv->regs + DISP_AAL_EN);
-}
-
static void mtk_dither_config(struct device *dev, unsigned int w,
unsigned int h, unsigned int vrefresh,
unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
@@ -247,8 +212,8 @@ static void mtk_dither_stop(struct device *dev)
}

static const struct mtk_ddp_comp_funcs ddp_aal = {
- .clk_enable = mtk_ddp_clk_enable,
- .clk_disable = mtk_ddp_clk_disable,
+ .clk_enable = mtk_aal_clk_enable,
+ .clk_disable = mtk_aal_clk_disable,
.gamma_set = mtk_aal_gamma_set,
.config = mtk_aal_config,
.start = mtk_aal_start,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index b46bdb8..67a585e 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -532,11 +532,12 @@ static int mtk_drm_probe(struct platform_device *pdev)
private->comp_node[comp_id] = of_node_get(node);

/*
- * Currently only the CCORR, COLOR, GAMMA, OVL, RDMA, DSI, and DPI
+ * Currently only the AAL, CCORR, COLOR, GAMMA, OVL, RDMA, DSI, and DPI
* blocks have separate component platform drivers and initialize their own
* DDP component structure. The others are initialized here.
*/
- if (comp_type == MTK_DISP_CCORR ||
+ if (comp_type == MTK_DISP_AAL ||
+ comp_type == MTK_DISP_CCORR ||
comp_type == MTK_DISP_COLOR ||
comp_type == MTK_DISP_GAMMA ||
comp_type == MTK_DISP_OVL ||
@@ -636,6 +637,7 @@ static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
};

static struct platform_driver * const mtk_drm_drivers[] = {
+ &mtk_disp_aal_driver,
&mtk_disp_ccorr_driver,
&mtk_disp_color_driver,
&mtk_disp_gamma_driver,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 637f566..3e7d1e6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -46,6 +46,7 @@ struct mtk_drm_private {
struct drm_atomic_state *suspend_state;
};

+extern struct platform_driver mtk_disp_aal_driver;
extern struct platform_driver mtk_disp_ccorr_driver;
extern struct platform_driver mtk_disp_color_driver;
extern struct platform_driver mtk_disp_gamma_driver;
--
1.8.1.1.dirty