diff options
Diffstat (limited to 'drivers/staging/gma500/mdfld_dsi_dbi.h')
| -rw-r--r-- | drivers/staging/gma500/mdfld_dsi_dbi.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/staging/gma500/mdfld_dsi_dbi.h b/drivers/staging/gma500/mdfld_dsi_dbi.h new file mode 100644 index 000000000000..dc6242c51d0b --- /dev/null +++ b/drivers/staging/gma500/mdfld_dsi_dbi.h @@ -0,0 +1,176 @@ +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * jim liu <jim.liu@intel.com> + * Jackie Li<yaodong.li@intel.com> + */ + +#ifndef __MDFLD_DSI_DBI_H__ +#define __MDFLD_DSI_DBI_H__ + +#include <linux/backlight.h> +#include <drm/drmP.h> +#include <drm/drm.h> +#include <drm/drm_crtc.h> +#include <drm/drm_edid.h> + +#include "psb_drv.h" +#include "psb_intel_drv.h" +#include "psb_intel_reg.h" +#include "power.h" + +#include "mdfld_dsi_output.h" +#include "mdfld_output.h" + +#define DRM_MODE_ENCODER_MIPI 5 + + +/* + * DBI encoder which inherits from mdfld_dsi_encoder + */ +struct mdfld_dsi_dbi_output { + struct mdfld_dsi_encoder base; + struct drm_display_mode *panel_fixed_mode; + u8 last_cmd; + u8 lane_count; + u8 channel_num; + struct drm_device *dev; + + /* Backlight operations */ + + /* DSR timer */ + u32 dsr_idle_count; + bool dsr_fb_update_done; + + /* Mode setting flags */ + u32 mode_flags; + + /* Panel status */ + bool dbi_panel_on; + bool first_boot; + struct panel_funcs *p_funcs; + + /* DPU */ + u32 *dbi_cb_addr; + u32 dbi_cb_phy; + spinlock_t cb_lock; + u32 cb_write; +}; + +#define MDFLD_DSI_DBI_OUTPUT(dsi_encoder) \ + container_of(dsi_encoder, struct mdfld_dsi_dbi_output, base) + +struct mdfld_dbi_dsr_info { + int dbi_output_num; + struct mdfld_dsi_dbi_output *dbi_outputs[2]; + + u32 dsr_idle_count; +}; + +#define DBI_CB_TIMEOUT_COUNT 0xffff + +/* Offsets */ +#define CMD_MEM_ADDR_OFFSET 0 + +#define CMD_DATA_SRC_SYSTEM_MEM 0 +#define CMD_DATA_SRC_PIPE 1 + +static inline int mdfld_dsi_dbi_fifo_ready(struct mdfld_dsi_dbi_output *dbi_output) +{ + struct drm_device *dev = dbi_output->dev; + u32 retry = DBI_CB_TIMEOUT_COUNT; + int reg_offset = (dbi_output->channel_num == 1) ? MIPIC_REG_OFFSET : 0; + int ret = 0; + + /* Query the dbi fifo status*/ + while (retry--) { + if (REG_READ(MIPIA_GEN_FIFO_STAT_REG + reg_offset) & (1 << 27)) + break; + } + + if (!retry) { + DRM_ERROR("Timeout waiting for DBI FIFO empty\n"); + ret = -EAGAIN; + } + return ret; +} + +static inline int mdfld_dsi_dbi_cmd_sent(struct mdfld_dsi_dbi_output *dbi_output) +{ + struct drm_device *dev = dbi_output->dev; + u32 retry = DBI_CB_TIMEOUT_COUNT; + int reg_offset = (dbi_output->channel_num == 1) ? MIPIC_REG_OFFSET : 0; + int ret = 0; + + /* Query the command execution status */ + while (retry--) + if (!(REG_READ(MIPIA_CMD_ADD_REG + reg_offset) & (1 << 0))) + break; + + if (!retry) { + DRM_ERROR("Timeout waiting for DBI command status\n"); + ret = -EAGAIN; + } + + return ret; +} + +static inline int mdfld_dsi_dbi_cb_ready(struct mdfld_dsi_dbi_output *dbi_output) +{ + int ret = 0; + + /* Query the command execution status*/ + ret = mdfld_dsi_dbi_cmd_sent(dbi_output); + if (ret) { + DRM_ERROR("Peripheral is busy\n"); + ret = -EAGAIN; + } + /* Query the dbi fifo status*/ + ret = mdfld_dsi_dbi_fifo_ready(dbi_output); + if (ret) { + DRM_ERROR("DBI FIFO is not empty\n"); + ret = -EAGAIN; + } + return ret; +} + +extern void mdfld_dsi_dbi_output_init(struct drm_device *dev, + struct psb_intel_mode_device *mode_dev, int pipe); +extern void mdfld_dsi_dbi_exit_dsr(struct drm_device *dev, u32 update_src); +extern void mdfld_dsi_dbi_enter_dsr(struct mdfld_dsi_dbi_output *dbi_output, + int pipe); +extern int mdfld_dbi_dsr_init(struct drm_device *dev); +extern void mdfld_dbi_dsr_exit(struct drm_device *dev); +extern struct mdfld_dsi_encoder *mdfld_dsi_dbi_init(struct drm_device *dev, + struct mdfld_dsi_connector *dsi_connector, + struct panel_funcs *p_funcs); +extern int mdfld_dsi_dbi_send_dcs(struct mdfld_dsi_dbi_output *dbi_output, + u8 dcs, u8 *param, u32 num, u8 data_src); +extern int mdfld_dsi_dbi_update_area(struct mdfld_dsi_dbi_output *dbi_output, + u16 x1, u16 y1, u16 x2, u16 y2); +extern int mdfld_dsi_dbi_update_power(struct mdfld_dsi_dbi_output *dbi_output, + int mode); +extern void mdfld_dsi_controller_dbi_init(struct mdfld_dsi_config *dsi_config, + int pipe); + +#endif /*__MDFLD_DSI_DBI_H__*/ |