diff options
Diffstat (limited to 'drivers/gpu/drm/stm/ltdc.h')
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h new file mode 100644 index 000000000..f153b908c --- /dev/null +++ b/drivers/gpu/drm/stm/ltdc.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) STMicroelectronics SA 2017 + * + * Authors: Philippe Cornu <philippe.cornu@st.com> + * Yannick Fertre <yannick.fertre@st.com> + * Fabien Dessenne <fabien.dessenne@st.com> + * Mickael Reulier <mickael.reulier@st.com> + */ + +#ifndef _LTDC_H_ +#define _LTDC_H_ + +struct ltdc_caps { + u32 hw_version; /* hardware version */ + u32 nb_layers; /* number of supported layers */ + u32 reg_ofs; /* register offset for applicable regs */ + u32 bus_width; /* bus width (32 or 64 bits) */ + const u32 *pix_fmt_hw; /* supported pixel formats */ + bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */ + int pad_max_freq_hz; /* max frequency supported by pad */ + int nb_irq; /* number of hardware interrupts */ +}; + +#define LTDC_MAX_LAYER 4 + +struct fps_info { + unsigned int counter; + ktime_t last_timestamp; +}; + +struct ltdc_device { + void __iomem *regs; + struct clk *pixel_clk; /* lcd pixel clock */ + struct mutex err_lock; /* protecting error_status */ + struct ltdc_caps caps; + u32 error_status; + u32 irq_status; + struct fps_info plane_fpsi[LTDC_MAX_LAYER]; + struct drm_atomic_state *suspend_state; +}; + +int ltdc_load(struct drm_device *ddev); +void ltdc_unload(struct drm_device *ddev); +void ltdc_suspend(struct drm_device *ddev); +int ltdc_resume(struct drm_device *ddev); + +#endif |