diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/imx/imx-ldb-helper.h')
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx-ldb-helper.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h new file mode 100644 index 000000000000..a0a5cde27fbc --- /dev/null +++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +/* + * Copyright 2019,2020,2022 NXP + */ + +#ifndef __IMX_LDB_HELPER__ +#define __IMX_LDB_HELPER__ + +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/regmap.h> + +#include <drm/drm_atomic.h> +#include <drm/drm_bridge.h> +#include <drm/drm_device.h> +#include <drm/drm_encoder.h> +#include <drm/drm_modeset_helper_vtables.h> + +#define LDB_CH0_MODE_EN_TO_DI0 BIT(0) +#define LDB_CH0_MODE_EN_TO_DI1 (3 << 0) +#define LDB_CH0_MODE_EN_MASK (3 << 0) +#define LDB_CH1_MODE_EN_TO_DI0 BIT(2) +#define LDB_CH1_MODE_EN_TO_DI1 (3 << 2) +#define LDB_CH1_MODE_EN_MASK (3 << 2) +#define LDB_SPLIT_MODE_EN BIT(4) +#define LDB_DATA_WIDTH_CH0_24 BIT(5) +#define LDB_BIT_MAP_CH0_JEIDA BIT(6) +#define LDB_DATA_WIDTH_CH1_24 BIT(7) +#define LDB_BIT_MAP_CH1_JEIDA BIT(8) +#define LDB_DI0_VS_POL_ACT_LOW BIT(9) +#define LDB_DI1_VS_POL_ACT_LOW BIT(10) + +#define MAX_LDB_CHAN_NUM 2 + +enum ldb_channel_link_type { + LDB_CH_SINGLE_LINK, + LDB_CH_DUAL_LINK_EVEN_ODD_PIXELS, + LDB_CH_DUAL_LINK_ODD_EVEN_PIXELS, +}; + +struct ldb; + +struct ldb_channel { + struct ldb *ldb; + struct drm_bridge bridge; + struct drm_bridge *next_bridge; + struct device_node *np; + u32 chno; + bool is_available; + u32 in_bus_format; + u32 out_bus_format; + enum ldb_channel_link_type link_type; +}; + +struct ldb { + struct regmap *regmap; + struct device *dev; + struct ldb_channel *channel[MAX_LDB_CHAN_NUM]; + unsigned int ctrl_reg; + u32 ldb_ctrl; + unsigned int available_ch_cnt; +}; + +#define bridge_to_ldb_ch(b) container_of(b, struct ldb_channel, bridge) + +bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch); +bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch); + +int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state); + +void ldb_bridge_mode_set_helper(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode); + +void ldb_bridge_enable_helper(struct drm_bridge *bridge); + +void ldb_bridge_disable_helper(struct drm_bridge *bridge); + +int ldb_bridge_attach_helper(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags); + +int ldb_init_helper(struct ldb *ldb); + +int ldb_find_next_bridge_helper(struct ldb *ldb); + +void ldb_add_bridge_helper(struct ldb *ldb, + const struct drm_bridge_funcs *bridge_funcs); + +void ldb_remove_bridge_helper(struct ldb *ldb); + +#endif /* __IMX_LDB_HELPER__ */ |