/* * Copyright © 2013 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. * * Author: Jani Nikula <[email protected]> */ #include <linux/dmi.h> #include <linux/slab.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> #include <drm/drm_edid.h> #include <drm/drm_mipi_dsi.h> #include "i915_drv.h" #include "i915_reg.h" #include "intel_atomic.h" #include "intel_backlight.h" #include "intel_connector.h" #include "intel_crtc.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_dsi.h" #include "intel_dsi_vbt.h" #include "intel_fifo_underrun.h" #include "intel_panel.h" #include "skl_scaler.h" #include "vlv_dsi.h" #include "vlv_dsi_pll.h" #include "vlv_dsi_regs.h" #include "vlv_sideband.h" /* return pixels in terms of txbyteclkhs */ static u16 txbyteclkhs(u16 pixels, int bpp, int lane_count, u16 burst_mode_ratio) { … } /* return pixels equvalent to txbyteclkhs */ static u16 pixels_from_txbyteclkhs(u16 clk_hs, int bpp, int lane_count, u16 burst_mode_ratio) { … } enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt) { … } void vlv_dsi_wait_for_fifo_empty(struct intel_dsi *intel_dsi, enum port port) { … } static void write_data(struct intel_display *display, i915_reg_t reg, const u8 *data, u32 len) { … } static void read_data(struct intel_display *display, i915_reg_t reg, u8 *data, u32 len) { … } static ssize_t intel_dsi_host_transfer(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { … } static int intel_dsi_host_attach(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi) { … } static int intel_dsi_host_detach(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi) { … } static const struct mipi_dsi_host_ops intel_dsi_host_ops = …; /* * send a video mode command * * XXX: commands with data in MIPI_DPI_DATA? */ static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs, enum port port) { … } static void band_gap_reset(struct drm_i915_private *dev_priv) { … } static int intel_dsi_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state) { … } static bool glk_dsi_enable_io(struct intel_encoder *encoder) { … } static void glk_dsi_device_ready(struct intel_encoder *encoder) { … } static void bxt_dsi_device_ready(struct intel_encoder *encoder) { … } static void vlv_dsi_device_ready(struct intel_encoder *encoder) { … } static void intel_dsi_device_ready(struct intel_encoder *encoder) { … } static void glk_dsi_enter_low_power_mode(struct intel_encoder *encoder) { … } static void glk_dsi_disable_mipi_io(struct intel_encoder *encoder) { … } static void glk_dsi_clear_device_ready(struct intel_encoder *encoder) { … } static i915_reg_t port_ctrl_reg(struct drm_i915_private *i915, enum port port) { … } static void vlv_dsi_clear_device_ready(struct intel_encoder *encoder) { … } static void intel_dsi_port_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static void intel_dsi_port_disable(struct intel_encoder *encoder) { … } static void intel_dsi_prepare(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config); static void intel_dsi_unprepare(struct intel_encoder *encoder); /* * Panel enable/disable sequences from the VBT spec. * * Note the spec has AssertReset / DeassertReset swapped from their * usual naming. We use the normal names to avoid confusion (so below * they are swapped compared to the spec). * * Steps starting with MIPI refer to VBT sequences, note that for v2 * VBTs several steps which have a VBT in v2 are expected to be handled * directly by the driver, by directly driving gpios for example. * * v2 video mode seq v3 video mode seq command mode seq * - power on - MIPIPanelPowerOn - power on * - wait t1+t2 - wait t1+t2 * - MIPIDeassertResetPin - MIPIDeassertResetPin - MIPIDeassertResetPin * - io lines to lp-11 - io lines to lp-11 - io lines to lp-11 * - MIPISendInitialDcsCmds - MIPISendInitialDcsCmds - MIPISendInitialDcsCmds * - MIPITearOn * - MIPIDisplayOn * - turn on DPI - turn on DPI - set pipe to dsr mode * - MIPIDisplayOn - MIPIDisplayOn * - wait t5 - wait t5 * - backlight on - MIPIBacklightOn - backlight on * ... ... ... issue mem cmds ... * - backlight off - MIPIBacklightOff - backlight off * - wait t6 - wait t6 * - MIPIDisplayOff * - turn off DPI - turn off DPI - disable pipe dsr mode * - MIPITearOff * - MIPIDisplayOff - MIPIDisplayOff * - io lines to lp-00 - io lines to lp-00 - io lines to lp-00 * - MIPIAssertResetPin - MIPIAssertResetPin - MIPIAssertResetPin * - wait t3 - wait t3 * - power off - MIPIPanelPowerOff - power off * - wait t4 - wait t4 */ /* * DSI port enable has to be done before pipe and plane enable, so we do it in * the pre_enable hook instead of the enable hook. */ static void intel_dsi_pre_enable(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config, const struct drm_connector_state *conn_state) { … } static void bxt_dsi_enable(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { … } /* * DSI port disable has to be done after pipe and plane disable, so we do it in * the post_disable hook. */ static void intel_dsi_disable(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) { … } static void intel_dsi_post_disable(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static bool intel_dsi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe) { … } static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) { … } static void intel_dsi_get_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) { … } /* return txclkesc cycles in terms of divider and duration in us */ static u16 txclkesc(u32 divider, unsigned int us) { … } static void set_dsi_timings(struct intel_encoder *encoder, const struct drm_display_mode *adjusted_mode) { … } static u32 pixel_format_to_reg(enum mipi_dsi_pixel_format fmt) { … } static void intel_dsi_prepare(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config) { … } static void intel_dsi_unprepare(struct intel_encoder *encoder) { … } static const struct drm_encoder_funcs intel_dsi_funcs = …; static enum drm_mode_status vlv_dsi_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { … } static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs = …; static const struct drm_connector_funcs intel_dsi_connector_funcs = …; static void vlv_dsi_add_properties(struct intel_connector *connector) { … } #define NS_KHZ_RATIO … #define PREPARE_CNT_MAX … #define EXIT_ZERO_CNT_MAX … #define CLK_ZERO_CNT_MAX … #define TRAIL_CNT_MAX … static void vlv_dphy_param_init(struct intel_dsi *intel_dsi) { … } vlv_dsi_dmi_quirk_func; /* * Vtotal is wrong on the Asus TF103C leading to the last line of the display * being shown as the first line. The factory installed Android has a hardcoded * modeline, causing it to not suffer from this BIOS bug. * * Original mode: "1280x800": 60 67700 1280 1312 1328 1376 800 808 812 820 0x8 0xa * Fixed mode: "1280x800": 60 67700 1280 1312 1328 1376 800 808 812 816 0x8 0xa * * https://gitlab.freedesktop.org/drm/intel/-/issues/9381 */ static void vlv_dsi_asus_tf103c_mode_fixup(struct intel_dsi *intel_dsi) { … } /* * On the Lenovo Yoga Tablet 2 830 / 1050 there are 2 problems: * 1. The I2C MIPI sequence elements reference bus 3. ACPI has I2C1 - I2C7 * which under Linux become bus 0 - 6. And the MIPI sequence reference * to bus 3 is indented for I2C3 which is bus 2 under Linux. * * Note mipi_exec_i2c() cannot just subtract 1 from the bus * given in the I2C MIPI sequence element. Since on other * devices the I2C bus-numbers used in the MIPI sequences do * actually start at 0. * * 2. width_/height_mm contain a bogus 192mm x 120mm size. This is * especially a problem on the 8" 830 version which uses a 10:16 * portrait screen where as the bogus size is 16:10. * * https://gitlab.freedesktop.org/drm/intel/-/issues/9379 */ static void vlv_dsi_lenovo_yoga_tab2_size_fixup(struct intel_dsi *intel_dsi) { … } /* * On the Lenovo Yoga Tab 3 Pro YT3-X90F there are 2 problems: * 1. i2c_acpi_find_adapter() picks the wrong adapter causing mipi_exec_i2c() * to not work. Fix this by setting i2c_bus_num. * 2. There is no backlight off MIPI sequence, causing the backlight to stay on. * Add a backlight off sequence mirroring the existing backlight on sequence. * * https://gitlab.freedesktop.org/drm/intel/-/issues/9380 */ static void vlv_dsi_lenovo_yoga_tab3_backlight_fixup(struct intel_dsi *intel_dsi) { … } static const struct dmi_system_id vlv_dsi_dmi_quirk_table[] = …; void vlv_dsi_init(struct drm_i915_private *dev_priv) { … }
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