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A patch series for moving MIPI-DSI driver for Exynos DRM to drm/bridge

Browse Source 
directory so that I.MX SoC family can also share the same device driver.
 Samsung MIPI DSIM device is a common IP that can be used by Exynos and I.MX8M
 Mini/Nano/Plus SoC. Regarding this, this patch series has added several
 things below to existing MIPI DSI driver,
 	- Add exynos_dsi_type enum type to provide controller data from different
 	  platforms.
 	- Add two pipeline detection ways support - existing Exynos DSI child node
 	  and I.MX family of-graph port or ports.
 	- Consider component and bridged based DRM drivers.
 	- Add device tree binding support of I.MX family.
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Merge tag 'exynos-drm-next-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

A patch series for moving MIPI-DSI driver for Exynos DRM to drm/bridge
directory so that I.MX SoC family can also share the same device driver.
Samsung MIPI DSIM device is a common IP that can be used by Exynos and I.MX8M
Mini/Nano/Plus SoC. Regarding this, this patch series has added several
things below to existing MIPI DSI driver,
	- Add exynos_dsi_type enum type to provide controller data from different
	  platforms.
	- Add two pipeline detection ways support - existing Exynos DSI child node
	  and I.MX family of-graph port or ports.
	- Consider component and bridged based DRM drivers.
	- Add device tree binding support of I.MX family.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230328040524.49278-1-inki.dae@samsung.com
This commit is contained in:
Daniel Vetter 2023-03-28 19:23:05 +02:00
commit 2fcc1fa5f9
8 changed files with 2197 additions and 1735 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
View File

@ -7,6 +7,8 @@ Required properties:
"samsung,exynos5410-mipi-dsi" /* for Exynos5410/5420/5440 SoCs */
"samsung,exynos5422-mipi-dsi" /* for Exynos5422/5800 SoCs */
"samsung,exynos5433-mipi-dsi" /* for Exynos5433 SoCs */
"fsl,imx8mm-mipi-dsim" /* for i.MX8M Mini/Nano SoCs */
"fsl,imx8mp-mipi-dsim" /* for i.MX8M Plus SoCs */
- reg: physical base address and length of the registers set for the device
- interrupts: should contain DSI interrupt
- clocks: list of clock specifiers, must contain an entry for each required

9
MAINTAINERS
View File

@ -6624,6 +6624,15 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/display/panel/samsung,lms397kf04.yaml
F: drivers/gpu/drm/panel/panel-samsung-db7430.c
DRM DRIVER FOR SAMSUNG MIPI DSIM BRIDGE
M: Inki Dae <inki.dae@samsung.com>
M: Jagan Teki <jagan@amarulasolutions.com>
M: Marek Szyprowski <m.szyprowski@samsung.com>
S: Maintained
T: git git://anongit.freedesktop.org/drm/drm-misc
F: drivers/gpu/drm/bridge/samsung-dsim.c
F: include/drm/bridge/samsung-dsim.h
DRM DRIVER FOR SAMSUNG S6D27A1 PANELS
M: Markuss Broks <markuss.broks@gmail.com>
S: Maintained

12
drivers/gpu/drm/bridge/Kconfig
View File

@ -220,6 +220,18 @@ config DRM_PARADE_PS8640
The PS8640 is a high-performance and low-power
MIPI DSI to eDP converter
config DRM_SAMSUNG_DSIM
tristate "Samsung MIPI DSIM bridge driver"
depends on COMMON_CLK
depends on OF && HAS_IOMEM
select DRM_KMS_HELPER
select DRM_MIPI_DSI
select DRM_PANEL_BRIDGE
help
The Samsung MIPI DSIM bridge controller driver.
This MIPI DSIM bridge can be found it on Exynos SoCs and
NXP's i.MX8M Mini/Nano.
config DRM_SIL_SII8620
tristate "Silicon Image SII8620 HDMI/MHL bridge"
depends on OF

1
drivers/gpu/drm/bridge/Makefile
View File

@ -14,6 +14,7 @@ obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v
obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
obj-$(CONFIG_DRM_PARADE_PS8640) += parade-ps8640.o
obj-$(CONFIG_DRM_SAMSUNG_DSIM) += samsung-dsim.o
obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o
obj-$(CONFIG_DRM_SII902X) += sii902x.o
obj-$(CONFIG_DRM_SII9234) += sii9234.o

1967
drivers/gpu/drm/bridge/samsung-dsim.c Normal file
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File diff suppressed because it is too large Load Diff

1
drivers/gpu/drm/exynos/Kconfig
View File

@ -59,6 +59,7 @@ config DRM_EXYNOS_DSI
depends on DRM_EXYNOS_FIMD || DRM_EXYNOS5433_DECON || DRM_EXYNOS7_DECON
select DRM_MIPI_DSI
select DRM_PANEL
select DRM_SAMSUNG_DSIM
default n
help
This enables support for Exynos MIPI-DSI device.

1825
drivers/gpu/drm/exynos/exynos_drm_dsi.c
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File diff suppressed because it is too large Load Diff

115
include/drm/bridge/samsung-dsim.h Normal file
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@ -0,0 +1,115 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2022 Amarula Solutions(India)
* Author: Jagan Teki <jagan@amarulasolutions.com>
*/
#ifndef __SAMSUNG_DSIM__
#define __SAMSUNG_DSIM__
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_of.h>
#include <drm/drm_mipi_dsi.h>
struct samsung_dsim;
#define DSIM_STATE_ENABLED BIT(0)
#define DSIM_STATE_INITIALIZED BIT(1)
#define DSIM_STATE_CMD_LPM BIT(2)
#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
enum samsung_dsim_type {
DSIM_TYPE_EXYNOS3250,
DSIM_TYPE_EXYNOS4210,
DSIM_TYPE_EXYNOS5410,
DSIM_TYPE_EXYNOS5422,
DSIM_TYPE_EXYNOS5433,
DSIM_TYPE_IMX8MM,
DSIM_TYPE_IMX8MP,
DSIM_TYPE_COUNT,
};
#define samsung_dsim_hw_is_exynos(hw) \
((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433)
struct samsung_dsim_transfer {
struct list_head list;
struct completion completed;
int result;
struct mipi_dsi_packet packet;
u16 flags;
u16 tx_done;
u8 *rx_payload;
u16 rx_len;
u16 rx_done;
};
struct samsung_dsim_driver_data {
const unsigned int *reg_ofs;
unsigned int plltmr_reg;
unsigned int has_freqband:1;
unsigned int has_clklane_stop:1;
unsigned int num_clks;
unsigned int max_freq;
unsigned int wait_for_reset;
unsigned int num_bits_resol;
unsigned int pll_p_offset;
const unsigned int *reg_values;
};
struct samsung_dsim_host_ops {
int (*register_host)(struct samsung_dsim *dsim);
void (*unregister_host)(struct samsung_dsim *dsim);
int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device);
irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim);
};
struct samsung_dsim_plat_data {
enum samsung_dsim_type hw_type;
const struct samsung_dsim_host_ops *host_ops;
};
struct samsung_dsim {
struct mipi_dsi_host dsi_host;
struct drm_bridge bridge;
struct drm_bridge *out_bridge;
struct device *dev;
struct drm_display_mode mode;
void __iomem *reg_base;
struct phy *phy;
struct clk **clks;
struct regulator_bulk_data supplies[2];
int irq;
struct gpio_desc *te_gpio;
u32 pll_clk_rate;
u32 burst_clk_rate;
u32 esc_clk_rate;
u32 lanes;
u32 mode_flags;
u32 format;
int state;
struct drm_property *brightness;
struct completion completed;
spinlock_t transfer_lock; /* protects transfer_list */
struct list_head transfer_list;
const struct samsung_dsim_driver_data *driver_data;
const struct samsung_dsim_plat_data *plat_data;
void *priv;
};
extern int samsung_dsim_probe(struct platform_device *pdev);
extern int samsung_dsim_remove(struct platform_device *pdev);
extern const struct dev_pm_ops samsung_dsim_pm_ops;
#endif /* __SAMSUNG_DSIM__ */