diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/vlv_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index a96e7d028c5c..55da627a8b8d 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -23,6 +23,7 @@ * Author: Jani Nikula <jani.nikula@intel.com> */ +#include <linux/dmi.h> #include <linux/slab.h> #include <drm/drm_atomic_helper.h> @@ -1744,6 +1745,126 @@ static void vlv_dphy_param_init(struct intel_dsi *intel_dsi) intel_dsi_log_params(intel_dsi); } +typedef void (*vlv_dsi_dmi_quirk_func)(struct intel_dsi *intel_dsi); + +/* + * 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) +{ + /* Cast away the const as we want to fixup the mode */ + struct drm_display_mode *fixed_mode = (struct drm_display_mode *) + intel_panel_preferred_fixed_mode(intel_dsi->attached_connector); + + if (fixed_mode->vtotal == 820) + fixed_mode->vtotal -= 4; +} + +/* + * 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) +{ + const struct drm_display_mode *fixed_mode = + intel_panel_preferred_fixed_mode(intel_dsi->attached_connector); + struct drm_display_info *info = &intel_dsi->attached_connector->base.display_info; + + intel_dsi->i2c_bus_num = 2; + + /* + * The 10" 1050 uses a 1920x1200 landscape screen, where as the 8" 830 + * uses a 1200x1920 portrait screen. + */ + if (fixed_mode->hdisplay == 1920) { + info->width_mm = 216; + info->height_mm = 135; + } else { + info->width_mm = 107; + info->height_mm = 171; + } +} + +/* + * 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 u8 backlight_off_sequence[16] = { + /* Header Seq-id 7, length after header 11 bytes */ + 0x07, 0x0b, 0x00, 0x00, 0x00, + /* MIPI_SEQ_ELEM_I2C bus 0 addr 0x2c reg 0x00 data-len 1 data 0x00 */ + 0x04, 0x08, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x01, 0x00, + /* MIPI_SEQ_ELEM_END */ + 0x00 + }; + struct intel_connector *connector = intel_dsi->attached_connector; + + intel_dsi->i2c_bus_num = 0; + connector->panel.vbt.dsi.sequence[MIPI_SEQ_BACKLIGHT_OFF] = backlight_off_sequence; +} + +static const struct dmi_system_id vlv_dsi_dmi_quirk_table[] = { + { + /* Asus Transformer Pad TF103C */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"), + }, + .driver_data = (void *)vlv_dsi_asus_tf103c_mode_fixup, + }, + { + /* + * Lenovo Yoga Tablet 2 830F/L or 1050F/L (The 8" and 10" + * Lenovo Yoga Tablet 2 use the same mainboard) + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."), + DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"), + DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"), + /* Partial match on beginning of BIOS version */ + DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"), + }, + .driver_data = (void *)vlv_dsi_lenovo_yoga_tab2_size_fixup, + }, + { + /* Lenovo Yoga Tab 3 Pro YT3-X90F */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"), + }, + .driver_data = (void *)vlv_dsi_lenovo_yoga_tab3_backlight_fixup, + }, + { } +}; + void vlv_dsi_init(struct drm_i915_private *dev_priv) { struct intel_dsi *intel_dsi; @@ -1752,6 +1873,7 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv) struct intel_connector *intel_connector; struct drm_connector *connector; struct drm_display_mode *current_mode; + const struct dmi_system_id *dmi_id; enum port port; enum pipe pipe; @@ -1883,6 +2005,14 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv) goto err_cleanup_connector; } + dmi_id = dmi_first_match(vlv_dsi_dmi_quirk_table); + if (dmi_id) { + vlv_dsi_dmi_quirk_func quirk_func = + (vlv_dsi_dmi_quirk_func)dmi_id->driver_data; + + quirk_func(intel_dsi); + } + intel_panel_init(intel_connector, NULL); intel_backlight_setup(intel_connector, INVALID_PIPE); |