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Add minimal feature support with FrameGen and TCon so that the engine can output display timings. The display engine driver as a master binds FrameGen and TCon drivers as components. While at it, the display engine driver is a component to be bound with the upcoming DRM driver. Signed-off-by: Liu Ying --- v3: * No change. v2: * Use OF alias id to get instance id. * Add dev member to struct dc_tc. drivers/gpu/drm/imx/Kconfig | 1 + drivers/gpu/drm/imx/Makefile | 1 + drivers/gpu/drm/imx/dc/Kconfig | 5 + drivers/gpu/drm/imx/dc/Makefile | 5 + drivers/gpu/drm/imx/dc/dc-de.c | 151 +++++++++++++ drivers/gpu/drm/imx/dc/dc-de.h | 62 ++++++ drivers/gpu/drm/imx/dc/dc-drv.c | 32 +++ drivers/gpu/drm/imx/dc/dc-drv.h | 24 +++ drivers/gpu/drm/imx/dc/dc-fg.c | 366 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/imx/dc/dc-tc.c | 137 ++++++++++++ 10 files changed, 784 insertions(+) create mode 100644 drivers/gpu/drm/imx/dc/Kconfig create mode 100644 drivers/gpu/drm/imx/dc/Makefile create mode 100644 drivers/gpu/drm/imx/dc/dc-de.c create mode 100644 drivers/gpu/drm/imx/dc/dc-de.h create mode 100644 drivers/gpu/drm/imx/dc/dc-drv.c create mode 100644 drivers/gpu/drm/imx/dc/dc-drv.h create mode 100644 drivers/gpu/drm/imx/dc/dc-fg.c create mode 100644 drivers/gpu/drm/imx/dc/dc-tc.c diff --git a/drivers/gpu/drm/imx/Kconfig b/drivers/gpu/drm/imx/Kconfig index 03535a15dd8f..3e8c6edbc17c 100644 --- a/drivers/gpu/drm/imx/Kconfig +++ b/drivers/gpu/drm/imx/Kconfig @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only +source "drivers/gpu/drm/imx/dc/Kconfig" source "drivers/gpu/drm/imx/dcss/Kconfig" source "drivers/gpu/drm/imx/ipuv3/Kconfig" source "drivers/gpu/drm/imx/lcdc/Kconfig" diff --git a/drivers/gpu/drm/imx/Makefile b/drivers/gpu/drm/imx/Makefile index 86f38e7c7422..c7b317640d71 100644 --- a/drivers/gpu/drm/imx/Makefile +++ b/drivers/gpu/drm/imx/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_DRM_IMX8_DC) += dc/ obj-$(CONFIG_DRM_IMX_DCSS) += dcss/ obj-$(CONFIG_DRM_IMX) += ipuv3/ obj-$(CONFIG_DRM_IMX_LCDC) += lcdc/ diff --git a/drivers/gpu/drm/imx/dc/Kconfig b/drivers/gpu/drm/imx/dc/Kconfig new file mode 100644 index 000000000000..32d7471c49d0 --- /dev/null +++ b/drivers/gpu/drm/imx/dc/Kconfig @@ -0,0 +1,5 @@ +config DRM_IMX8_DC + tristate "Freescale i.MX8 Display Controller Graphics" + depends on DRM && COMMON_CLK && OF && (ARCH_MXC || COMPILE_TEST) + help + enable Freescale i.MX8 Display Controller(DC) graphics support diff --git a/drivers/gpu/drm/imx/dc/Makefile b/drivers/gpu/drm/imx/dc/Makefile new file mode 100644 index 000000000000..56de82d53d4d --- /dev/null +++ b/drivers/gpu/drm/imx/dc/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + +imx8-dc-drm-objs := dc-de.o dc-drv.o dc-fg.o dc-tc.o + +obj-$(CONFIG_DRM_IMX8_DC) += imx8-dc-drm.o diff --git a/drivers/gpu/drm/imx/dc/dc-de.c b/drivers/gpu/drm/imx/dc/dc-de.c new file mode 100644 index 000000000000..2c8268b76b08 --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-de.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2024 NXP + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "dc-de.h" +#include "dc-drv.h" + +#define POLARITYCTRL 0xc +#define POLEN_HIGH BIT(2) + +struct dc_de_priv { + struct dc_de engine; + void __iomem *reg_top; +}; + +static inline struct dc_de_priv *to_de_priv(struct dc_de *de) +{ + return container_of(de, struct dc_de_priv, engine); +} + +static inline void +dc_dec_write(struct dc_de *de, unsigned int offset, u32 value) +{ + struct dc_de_priv *priv = to_de_priv(de); + + writel(value, priv->reg_top + offset); +} + +static void dc_dec_init(struct dc_de *de) +{ + dc_dec_write(de, POLARITYCTRL, POLEN_HIGH); +} + +static int dc_de_bind(struct device *dev, struct device *master, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + struct dc_drm_device *dc_drm = data; + struct dc_de_priv *priv; + int ret; + + priv = drmm_kzalloc(&dc_drm->base, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->reg_top = devm_platform_ioremap_resource_byname(pdev, "top"); + if (IS_ERR(priv->reg_top)) + return PTR_ERR(priv->reg_top); + + priv->engine.irq_shdld = platform_get_irq_byname(pdev, "shdload"); + if (priv->engine.irq_shdld < 0) + return priv->engine.irq_shdld; + + priv->engine.irq_framecomplete = + platform_get_irq_byname(pdev, "framecomplete"); + if (priv->engine.irq_framecomplete < 0) + return priv->engine.irq_framecomplete; + + priv->engine.irq_seqcomplete = + platform_get_irq_byname(pdev, "seqcomplete"); + if (priv->engine.irq_seqcomplete < 0) + return priv->engine.irq_seqcomplete; + + priv->engine.id = of_alias_get_id(dev->of_node, "dc0-display-engine"); + if (priv->engine.id < 0) { + dev_err(dev, "failed to get alias id: %d\n", priv->engine.id); + return priv->engine.id; + } + + priv->engine.dev = dev; + + dev_set_drvdata(dev, priv); + + ret = devm_pm_runtime_enable(dev); + if (ret) + return ret; + + dc_drm->de[priv->engine.id] = &priv->engine; + + return 0; +} + +static const struct component_ops dc_de_ops = { + .bind = dc_de_bind, +}; + +static int dc_de_probe(struct platform_device *pdev) +{ + int ret; + + ret = devm_of_platform_populate(&pdev->dev); + if (ret < 0) + return ret; + + ret = component_add(&pdev->dev, &dc_de_ops); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to add component\n"); + + return 0; +} + +static void dc_de_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dc_de_ops); +} + +static int dc_de_runtime_resume(struct device *dev) +{ + struct dc_de_priv *priv = dev_get_drvdata(dev); + struct dc_de *engine = &priv->engine; + + dc_dec_init(engine); + dc_fg_init(engine->fg); + dc_tc_init(engine->tc); + + return 0; +} + +static const struct dev_pm_ops dc_de_pm_ops = { + RUNTIME_PM_OPS(NULL, dc_de_runtime_resume, NULL) +}; + +static const struct of_device_id dc_de_dt_ids[] = { + { .compatible = "fsl,imx8qxp-dc-display-engine", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, dc_de_dt_ids); + +struct platform_driver dc_de_driver = { + .probe = dc_de_probe, + .remove_new = dc_de_remove, + .driver = { + .name = "imx8-dc-display-engine", + .of_match_table = dc_de_dt_ids, + .pm = pm_sleep_ptr(&dc_de_pm_ops), + }, +}; diff --git a/drivers/gpu/drm/imx/dc/dc-de.h b/drivers/gpu/drm/imx/dc/dc-de.h new file mode 100644 index 000000000000..3417059c40b9 --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-de.h @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2024 NXP + */ + +#ifndef __DC_DISPLAY_ENGINE_H__ +#define __DC_DISPLAY_ENGINE_H__ + +#include +#include + +#define DC_DISPLAYS 2 + +enum dc_fg_syncmode { + FG_SYNCMODE_OFF, /* No side-by-side synchronization. */ +}; + +enum dc_fg_dm { + FG_DM_CONSTCOL = 0x1, /* Constant Color Background is shown. */ + FG_DM_SEC_ON_TOP = 0x5, /* Both inputs overlaid with secondary on top. */ +}; + +struct dc_fg { +}; + +struct dc_tc { + struct device *dev; +}; + +struct dc_de { + struct device *dev; + struct dc_fg *fg; + struct dc_tc *tc; + int irq_shdld; + int irq_framecomplete; + int irq_seqcomplete; + int id; +}; + +/* Frame Generator Unit */ +void dc_fg_syncmode(struct dc_fg *fg, enum dc_fg_syncmode mode); +void dc_fg_cfg_videomode(struct dc_fg *fg, struct drm_display_mode *m); +void dc_fg_displaymode(struct dc_fg *fg, enum dc_fg_dm mode); +void dc_fg_panic_displaymode(struct dc_fg *fg, enum dc_fg_dm mode); +void dc_fg_enable(struct dc_fg *fg); +void dc_fg_disable(struct dc_fg *fg); +void dc_fg_shdtokgen(struct dc_fg *fg); +u32 dc_fg_get_frame_index(struct dc_fg *fg); +int dc_fg_get_line_index(struct dc_fg *fg); +bool dc_fg_wait_for_frame_index_moving(struct dc_fg *fg); +bool dc_fg_secondary_requests_to_read_empty_fifo(struct dc_fg *fg); +void dc_fg_secondary_clear_channel_status(struct dc_fg *fg); +int dc_fg_wait_for_secondary_syncup(struct dc_fg *fg); +void dc_fg_enable_clock(struct dc_fg *fg); +void dc_fg_disable_clock(struct dc_fg *fg); +enum drm_mode_status dc_fg_check_clock(struct dc_fg *fg, int clk_khz); +void dc_fg_init(struct dc_fg *fg); + +/* Timing Controller Unit */ +void dc_tc_init(struct dc_tc *tc); + +#endif /* __DC_DISPLAY_ENGINE_H__ */ diff --git a/drivers/gpu/drm/imx/dc/dc-drv.c b/drivers/gpu/drm/imx/dc/dc-drv.c new file mode 100644 index 000000000000..e5910a82dd4d --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-drv.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2024 NXP + */ + +#include +#include + +#include "dc-drv.h" + +static struct platform_driver * const dc_drivers[] = { + &dc_de_driver, + &dc_fg_driver, + &dc_tc_driver, +}; + +static int __init dc_drm_init(void) +{ + return platform_register_drivers(dc_drivers, ARRAY_SIZE(dc_drivers)); +} + +static void __exit dc_drm_exit(void) +{ + platform_unregister_drivers(dc_drivers, ARRAY_SIZE(dc_drivers)); +} + +module_init(dc_drm_init); +module_exit(dc_drm_exit); + +MODULE_DESCRIPTION("i.MX8 Display Controller DRM Driver"); +MODULE_AUTHOR("Liu Ying "); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/imx/dc/dc-drv.h b/drivers/gpu/drm/imx/dc/dc-drv.h new file mode 100644 index 000000000000..e1290d9a0a99 --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-drv.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2024 NXP + */ + +#ifndef __DC_DRV_H__ +#define __DC_DRV_H__ + +#include + +#include + +#include "dc-de.h" + +struct dc_drm_device { + struct drm_device base; + struct dc_de *de[DC_DISPLAYS]; +}; + +extern struct platform_driver dc_de_driver; +extern struct platform_driver dc_fg_driver; +extern struct platform_driver dc_tc_driver; + +#endif /* __DC_DRV_H__ */ diff --git a/drivers/gpu/drm/imx/dc/dc-fg.c b/drivers/gpu/drm/imx/dc/dc-fg.c new file mode 100644 index 000000000000..3e9a8abee93e --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-fg.c @@ -0,0 +1,366 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2024 NXP + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "dc-de.h" +#include "dc-drv.h" + +#define FGSTCTRL 0x8 +#define FGSYNCMODE_MASK 0x6 +#define FGSYNCMODE(n) ((n) << 6) +#define SHDEN BIT(0) + +#define HTCFG1 0xc +#define HTOTAL(n) ((((n) - 1) & 0x3fff) << 16) +#define HACT(n) ((n) & 0x3fff) + +#define HTCFG2 0x10 +#define HSEN BIT(31) +#define HSBP(n) ((((n) - 1) & 0x3fff) << 16) +#define HSYNC(n) (((n) - 1) & 0x3fff) + +#define VTCFG1 0x14 +#define VTOTAL(n) ((((n) - 1) & 0x3fff) << 16) +#define VACT(n) ((n) & 0x3fff) + +#define VTCFG2 0x18 +#define VSEN BIT(31) +#define VSBP(n) ((((n) - 1) & 0x3fff) << 16) +#define VSYNC(n) (((n) - 1) & 0x3fff) + +#define PKICKCONFIG 0x2c +#define SKICKCONFIG 0x30 +#define EN BIT(31) +#define ROW(n) (((n) & 0x3fff) << 16) +#define COL(n) ((n) & 0x3fff) + +#define PACFG 0x54 +#define SACFG 0x58 +#define STARTX(n) (((n) + 1) & 0x3fff) +#define STARTY(n) (((((n) + 1) & 0x3fff)) << 16) + +#define FGINCTRL 0x5c +#define FGINCTRLPANIC 0x60 +#define FGDM_MASK 0x7 +#define ENPRIMALPHA BIT(3) +#define ENSECALPHA BIT(4) + +#define FGCCR 0x64 +#define CCGREEN(g) (((g) & 0x3ff) << 10) + +#define FGENABLE 0x68 +#define FGEN BIT(0) + +#define FGSLR 0x6c +#define SHDTOKGEN BIT(0) + +#define FGTIMESTAMP 0x74 +#define FRAMEINDEX_SHIFT 14 +#define FRAMEINDEX_MASK (0x3ffff << FRAMEINDEX_SHIFT) +#define LINEINDEX_MASK 0x3fff + +#define FGCHSTAT 0x78 +#define SECSYNCSTAT BIT(24) +#define SFIFOEMPTY BIT(16) + +#define FGCHSTATCLR 0x7c +#define CLRSECSTAT BIT(16) + +#define KHZ 1000 + +struct dc_fg_priv { + struct dc_fg fg; + struct device *dev; + void __iomem *reg; + struct clk *clk_disp; +}; + +static inline struct dc_fg_priv *to_fg_priv(struct dc_fg *fg) +{ + return container_of(fg, struct dc_fg_priv, fg); +} + +static inline u32 dc_fg_read(struct dc_fg *fg, unsigned int offset) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + + return readl(priv->reg + offset); +} + +static inline void +dc_fg_write(struct dc_fg *fg, unsigned int offset, u32 value) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + + writel(value, priv->reg + offset); +} + +static inline void +dc_fg_write_mask(struct dc_fg *fg, unsigned int offset, u32 mask, u32 value) +{ + u32 tmp; + + tmp = dc_fg_read(fg, offset); + tmp &= ~mask; + dc_fg_write(fg, offset, tmp | value); +} + +static void dc_fg_enable_shden(struct dc_fg *fg) +{ + dc_fg_write_mask(fg, FGSTCTRL, SHDEN, SHDEN); +} + +void dc_fg_syncmode(struct dc_fg *fg, enum dc_fg_syncmode mode) +{ + dc_fg_write_mask(fg, FGSTCTRL, FGSYNCMODE_MASK, FGSYNCMODE(mode)); +} + +void dc_fg_cfg_videomode(struct dc_fg *fg, struct drm_display_mode *m) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + u32 hact, htotal, hsync, hsbp; + u32 vact, vtotal, vsync, vsbp; + u32 kick_row, kick_col; + int ret; + + hact = m->crtc_hdisplay; + htotal = m->crtc_htotal; + hsync = m->crtc_hsync_end - m->crtc_hsync_start; + hsbp = m->crtc_htotal - m->crtc_hsync_start; + + vact = m->crtc_vdisplay; + vtotal = m->crtc_vtotal; + vsync = m->crtc_vsync_end - m->crtc_vsync_start; + vsbp = m->crtc_vtotal - m->crtc_vsync_start; + + /* video mode */ + dc_fg_write(fg, HTCFG1, HACT(hact) | HTOTAL(htotal)); + dc_fg_write(fg, HTCFG2, HSYNC(hsync) | HSBP(hsbp) | HSEN); + dc_fg_write(fg, VTCFG1, VACT(vact) | VTOTAL(vtotal)); + dc_fg_write(fg, VTCFG2, VSYNC(vsync) | VSBP(vsbp) | VSEN); + + kick_col = hact + 1; + kick_row = vact; + + /* pkickconfig */ + dc_fg_write(fg, PKICKCONFIG, COL(kick_col) | ROW(kick_row) | EN); + + /* skikconfig */ + dc_fg_write(fg, SKICKCONFIG, COL(kick_col) | ROW(kick_row) | EN); + + /* primary and secondary area position configuration */ + dc_fg_write(fg, PACFG, STARTX(0) | STARTY(0)); + dc_fg_write(fg, SACFG, STARTX(0) | STARTY(0)); + + /* alpha */ + dc_fg_write_mask(fg, FGINCTRL, ENPRIMALPHA | ENSECALPHA, 0); + dc_fg_write_mask(fg, FGINCTRLPANIC, ENPRIMALPHA | ENSECALPHA, 0); + + /* constant color is green(used in panic mode) */ + dc_fg_write(fg, FGCCR, CCGREEN(0x3ff)); + + ret = clk_set_rate(priv->clk_disp, m->clock * KHZ); + if (ret < 0) + dev_err(priv->dev, + "failed to set display clock rate: %d\n", ret); +} + +void dc_fg_displaymode(struct dc_fg *fg, enum dc_fg_dm mode) +{ + dc_fg_write_mask(fg, FGINCTRL, FGDM_MASK, mode); +} + +void dc_fg_panic_displaymode(struct dc_fg *fg, enum dc_fg_dm mode) +{ + dc_fg_write_mask(fg, FGINCTRLPANIC, FGDM_MASK, mode); +} + +void dc_fg_enable(struct dc_fg *fg) +{ + dc_fg_write(fg, FGENABLE, FGEN); +} + +void dc_fg_disable(struct dc_fg *fg) +{ + dc_fg_write(fg, FGENABLE, 0); +} + +void dc_fg_shdtokgen(struct dc_fg *fg) +{ + dc_fg_write(fg, FGSLR, SHDTOKGEN); +} + +u32 dc_fg_get_frame_index(struct dc_fg *fg) +{ + u32 val = dc_fg_read(fg, FGTIMESTAMP); + + return (val & FRAMEINDEX_MASK) >> FRAMEINDEX_SHIFT; +} + +int dc_fg_get_line_index(struct dc_fg *fg) +{ + u32 val = dc_fg_read(fg, FGTIMESTAMP); + + return val & LINEINDEX_MASK; +} + +bool dc_fg_wait_for_frame_index_moving(struct dc_fg *fg) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(100); + u32 frame_index, last_frame_index; + + frame_index = dc_fg_get_frame_index(fg); + do { + last_frame_index = frame_index; + frame_index = dc_fg_get_frame_index(fg); + } while (last_frame_index == frame_index && + time_before(jiffies, timeout)); + + return last_frame_index != frame_index; +} + +bool dc_fg_secondary_requests_to_read_empty_fifo(struct dc_fg *fg) +{ + u32 val; + + val = dc_fg_read(fg, FGCHSTAT); + + return !!(val & SFIFOEMPTY); +} + +void dc_fg_secondary_clear_channel_status(struct dc_fg *fg) +{ + dc_fg_write(fg, FGCHSTATCLR, CLRSECSTAT); +} + +int dc_fg_wait_for_secondary_syncup(struct dc_fg *fg) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + u32 val; + + return readl_poll_timeout(priv->reg + FGCHSTAT, val, + val & SECSYNCSTAT, 5, 100000); +} + +void dc_fg_enable_clock(struct dc_fg *fg) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + int ret; + + ret = clk_prepare_enable(priv->clk_disp); + if (ret) + dev_err(priv->dev, "failed to enable display clock: %d\n", ret); +} + +void dc_fg_disable_clock(struct dc_fg *fg) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + + clk_disable_unprepare(priv->clk_disp); +} + +enum drm_mode_status dc_fg_check_clock(struct dc_fg *fg, int clk_khz) +{ + struct dc_fg_priv *priv = to_fg_priv(fg); + unsigned long rounded_rate; + + rounded_rate = clk_round_rate(priv->clk_disp, clk_khz * KHZ); + + if (rounded_rate != clk_khz * KHZ) + return MODE_NOCLOCK; + + return MODE_OK; +} + +void dc_fg_init(struct dc_fg *fg) +{ + dc_fg_enable_shden(fg); + dc_fg_syncmode(fg, FG_SYNCMODE_OFF); +} + +static int dc_fg_bind(struct device *dev, struct device *master, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + struct dc_drm_device *dc_drm = data; + struct dc_fg_priv *priv; + struct dc_de *de; + int id; + + priv = drmm_kzalloc(&dc_drm->base, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->reg = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->reg)) + return PTR_ERR(priv->reg); + + priv->clk_disp = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk_disp)) + return dev_err_probe(dev, PTR_ERR(priv->clk_disp), + "failed to get display clock\n"); + + id = of_alias_get_id(dev->of_node, "dc0-framegen"); + if (id < 0) { + dev_err(dev, "failed to get alias id: %d\n", id); + return id; + } + + priv->dev = dev; + + de = dc_drm->de[id]; + de->fg = &priv->fg; + + return 0; +} + +static const struct component_ops dc_fg_ops = { + .bind = dc_fg_bind, +}; + +static int dc_fg_probe(struct platform_device *pdev) +{ + int ret; + + ret = component_add(&pdev->dev, &dc_fg_ops); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to add component\n"); + + return 0; +} + +static void dc_fg_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dc_fg_ops); +} + +static const struct of_device_id dc_fg_dt_ids[] = { + { .compatible = "fsl,imx8qxp-dc-framegen", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, dc_fg_dt_ids); + +struct platform_driver dc_fg_driver = { + .probe = dc_fg_probe, + .remove_new = dc_fg_remove, + .driver = { + .name = "imx8-dc-framegen", + .of_match_table = dc_fg_dt_ids, + }, +}; diff --git a/drivers/gpu/drm/imx/dc/dc-tc.c b/drivers/gpu/drm/imx/dc/dc-tc.c new file mode 100644 index 000000000000..29f42496a409 --- /dev/null +++ b/drivers/gpu/drm/imx/dc/dc-tc.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2024 NXP + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "dc-drv.h" +#include "dc-de.h" + +#define TCON_CTRL 0x410 +#define CTRL_RST_VAL 0x01401408 + +/* red: MAPBIT 29-20, green: MAPBIT 19-10, blue: MAPBIT 9-0 */ +#define MAPBIT3_0 0x418 +#define MAPBIT7_4 0x41c +#define MAPBIT11_8 0x420 +#define MAPBIT15_12 0x424 +#define MAPBIT19_16 0x428 +#define MAPBIT23_20 0x42c +#define MAPBIT27_24 0x430 +#define MAPBIT31_28 0x434 +#define MAPBIT34_32 0x438 + +struct dc_tc_priv { + struct dc_tc tc; + void __iomem *reg; +}; + +static inline struct dc_tc_priv *to_tc_priv(struct dc_tc *tc) +{ + return container_of(tc, struct dc_tc_priv, tc); +} + +static inline void dc_tc_write(struct dc_tc *tc, unsigned int offset, u32 value) +{ + struct dc_tc_priv *priv = to_tc_priv(tc); + + writel(value, priv->reg + offset); +} + +static void dc_tc_set_fmt(struct dc_tc *tc) +{ + /* + * The pixels reach TCON are always in 30-bit BGR format. + * The first bridge always receives pixels in 30-bit RGB format. + * So, map the format to MEDIA_BUS_FMT_RGB101010_1X30. + */ + dc_tc_write(tc, MAPBIT3_0, 0x17161514); + dc_tc_write(tc, MAPBIT7_4, 0x1b1a1918); + dc_tc_write(tc, MAPBIT11_8, 0x0b0a1d1c); + dc_tc_write(tc, MAPBIT15_12, 0x0f0e0d0c); + dc_tc_write(tc, MAPBIT19_16, 0x13121110); + dc_tc_write(tc, MAPBIT23_20, 0x03020100); + dc_tc_write(tc, MAPBIT27_24, 0x07060504); + dc_tc_write(tc, MAPBIT31_28, 0x00000908); +} + +void dc_tc_init(struct dc_tc *tc) +{ + /* reset TCON_CTRL to POR default so that TCON works in bypass mode */ + dc_tc_write(tc, TCON_CTRL, CTRL_RST_VAL); + dc_tc_set_fmt(tc); +} + +static int dc_tc_bind(struct device *dev, struct device *master, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + struct dc_drm_device *dc_drm = data; + struct dc_tc_priv *priv; + struct dc_de *de; + int id; + + priv = drmm_kzalloc(&dc_drm->base, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->reg = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->reg)) + return PTR_ERR(priv->reg); + + id = of_alias_get_id(dev->of_node, "dc0-tcon"); + if (id < 0) { + dev_err(dev, "failed to get alias id: %d\n", id); + return id; + } + + de = dc_drm->de[id]; + de->tc = &priv->tc; + de->tc->dev = dev; + + return 0; +} + +static const struct component_ops dc_tc_ops = { + .bind = dc_tc_bind, +}; + +static int dc_tc_probe(struct platform_device *pdev) +{ + int ret; + + ret = component_add(&pdev->dev, &dc_tc_ops); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to add component\n"); + + return 0; +} + +static void dc_tc_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dc_tc_ops); +} + +static const struct of_device_id dc_tc_dt_ids[] = { + { .compatible = "fsl,imx8qxp-dc-tcon", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, dc_tc_dt_ids); + +struct platform_driver dc_tc_driver = { + .probe = dc_tc_probe, + .remove_new = dc_tc_remove, + .driver = { + .name = "imx8-dc-tcon", + .of_match_table = dc_tc_dt_ids, + }, +};