On Tue, 26 Apr 2016, "Adebisi, YetundeX" <yetundex.adebisi@xxxxxxxxx> wrote: >> -----Original Message----- >> From: Nikula, Jani >> Sent: Tuesday, April 26, 2016 2:14 PM >> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx >> Cc: Nikula, Jani; Vetter, Daniel; Adebisi, YetundeX; Deepak, M >> Subject: [PATCH 2/3] drm/i915: Add DCS control for Panel PWM >> >> If the source of the backlight PWM is from the >> panel then the PWM can be controlled by DCS >> command, this patch adds the support to >> enable/disbale panel PWM, control backlight level >> etc... >> >> v2: Moving the CABC bkl functions to new file.(Jani) >> >> v3: Rebase >> >> v4: Rebase >> >> v5: Use mipi_dsi_dcs_write() instead of mipi_dsi_dcs_write_buffer() (Jani) >> Move DCS macro`s to include/video/mipi_display.h (Jani) >> >> v6: Rename the file to intel_dsi_panel_pwm.c >> Removing the CABC operations >> >> v7 by Jani: renames, rebases, etc. >> >> v8 by Jani: s/INTEL_BACKLIGHT_CABC/INTEL_BACKLIGHT_DSI_DCS/ >> >> v9 by Jani: rename init function to intel_dsi_dcs_init_backlight_funcs >> >> Cc: Jani Nikula <jani.nikula@xxxxxxxxx> >> Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx> >> Cc: Yetunde Adebisi <yetundex.adebisi@xxxxxxxxx> >> Signed-off-by: Deepak M <m.deepak@xxxxxxxxx> >> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> > > Reviewed-by: Yetunde Adebisi <yetundex.adebisi@xxxxxxxxx> Pushed both to drm-intel-next-queued, thanks for the review. BR, Jani. >> --- >> drivers/gpu/drm/i915/Makefile | 1 + >> drivers/gpu/drm/i915/intel_drv.h | 2 + >> drivers/gpu/drm/i915/intel_dsi.c | 19 ++- >> drivers/gpu/drm/i915/intel_dsi.h | 3 + >> drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c | 157 >> +++++++++++++++++++++++++ >> drivers/gpu/drm/i915/intel_panel.c | 4 + >> 6 files changed, 184 insertions(+), 2 deletions(-) >> create mode 100644 drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c >> >> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile >> index 723c50251127..b5ec800f953e 100644 >> --- a/drivers/gpu/drm/i915/Makefile >> +++ b/drivers/gpu/drm/i915/Makefile >> @@ -86,6 +86,7 @@ i915-y += dvo_ch7017.o \ >> intel_dp_mst.o \ >> intel_dp.o \ >> intel_dsi.o \ >> + intel_dsi_dcs_backlight.o \ >> intel_dsi_panel_vbt.o \ >> intel_dsi_pll.o \ >> intel_dvo.o \ >> diff --git a/drivers/gpu/drm/i915/intel_drv.h >> b/drivers/gpu/drm/i915/intel_drv.h >> index cb89a35a6755..d65dfbb8cf7d 100644 >> --- a/drivers/gpu/drm/i915/intel_drv.h >> +++ b/drivers/gpu/drm/i915/intel_drv.h >> @@ -1346,6 +1346,8 @@ void intel_dp_mst_encoder_cleanup(struct >> intel_digital_port *intel_dig_port); >> /* intel_dsi.c */ >> void intel_dsi_init(struct drm_device *dev); >> >> +/* intel_dsi_dcs_backlight.c */ >> +int intel_dsi_dcs_init_backlight_funcs(struct intel_connector >> *intel_connector); >> >> /* intel_dvo.c */ >> void intel_dvo_init(struct drm_device *dev); >> diff --git a/drivers/gpu/drm/i915/intel_dsi.c >> b/drivers/gpu/drm/i915/intel_dsi.c >> index 2b22bb9bb86f..2209f9fe6c4b 100644 >> --- a/drivers/gpu/drm/i915/intel_dsi.c >> +++ b/drivers/gpu/drm/i915/intel_dsi.c >> @@ -1364,10 +1364,25 @@ void intel_dsi_init(struct drm_device *dev) >> else >> intel_encoder->crtc_mask = BIT(PIPE_B); >> >> - if (dev_priv->vbt.dsi.config->dual_link) >> + if (dev_priv->vbt.dsi.config->dual_link) { >> intel_dsi->ports = BIT(PORT_A) | BIT(PORT_C); >> - else >> + >> + switch (dev_priv->vbt.dsi.config->dl_dcs_backlight_ports) { >> + case DL_DCS_PORT_A: >> + intel_dsi->dcs_backlight_ports = BIT(PORT_A); >> + break; >> + case DL_DCS_PORT_C: >> + intel_dsi->dcs_backlight_ports = BIT(PORT_C); >> + break; >> + default: >> + case DL_DCS_PORT_A_AND_C: >> + intel_dsi->dcs_backlight_ports = BIT(PORT_A) | >> BIT(PORT_C); >> + break; >> + } >> + } else { >> intel_dsi->ports = BIT(port); >> + intel_dsi->dcs_backlight_ports = BIT(port); >> + } >> >> /* Create a DSI host (and a device) for each port. */ >> for_each_dsi_port(port, intel_dsi->ports) { >> diff --git a/drivers/gpu/drm/i915/intel_dsi.h >> b/drivers/gpu/drm/i915/intel_dsi.h >> index 61a6957fc6c2..b00fb3fbb0b1 100644 >> --- a/drivers/gpu/drm/i915/intel_dsi.h >> +++ b/drivers/gpu/drm/i915/intel_dsi.h >> @@ -78,6 +78,9 @@ struct intel_dsi { >> >> u8 escape_clk_div; >> u8 dual_link; >> + >> + u16 dcs_backlight_ports; >> + >> u8 pixel_overlap; >> u32 port_bits; >> u32 bw_timer; >> diff --git a/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c >> b/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c >> new file mode 100644 >> index 000000000000..7f9bbffa7f8c >> --- /dev/null >> +++ b/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c >> @@ -0,0 +1,157 @@ >> +/* >> + * Copyright © 2016 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: Deepak M <m.deepak at intel.com> >> + */ >> + >> +#include "intel_drv.h" >> +#include "intel_dsi.h" >> +#include "i915_drv.h" >> +#include <video/mipi_display.h> >> +#include <drm/drm_mipi_dsi.h> >> + >> +#define CONTROL_DISPLAY_BCTRL (1 << 5) >> +#define CONTROL_DISPLAY_DD (1 << 3) >> +#define CONTROL_DISPLAY_BL (1 << 2) >> + >> +#define PANEL_PWM_MAX_VALUE 0xFF >> + >> +static u32 dcs_get_backlight(struct intel_connector *connector) >> +{ >> + struct intel_encoder *encoder = connector->encoder; >> + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); >> + struct mipi_dsi_device *dsi_device; >> + u8 data; >> + enum port port; >> + >> + /* FIXME: Need to take care of 16 bit brightness level */ >> + for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { >> + dsi_device = intel_dsi->dsi_hosts[port]->device; >> + mipi_dsi_dcs_read(dsi_device, >> MIPI_DCS_GET_DISPLAY_BRIGHTNESS, >> + &data, sizeof(data)); >> + break; >> + } >> + >> + return data; >> +} >> + >> +static void dcs_set_backlight(struct intel_connector *connector, u32 level) >> +{ >> + struct intel_encoder *encoder = connector->encoder; >> + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); >> + struct mipi_dsi_device *dsi_device; >> + u8 data = level; >> + enum port port; >> + >> + /* FIXME: Need to take care of 16 bit brightness level */ >> + for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { >> + dsi_device = intel_dsi->dsi_hosts[port]->device; >> + mipi_dsi_dcs_write(dsi_device, >> MIPI_DCS_SET_DISPLAY_BRIGHTNESS, >> + &data, sizeof(data)); >> + } >> +} >> + >> +static void dcs_disable_backlight(struct intel_connector *connector) >> +{ >> + struct intel_encoder *encoder = connector->encoder; >> + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); >> + struct mipi_dsi_device *dsi_device; >> + enum port port; >> + >> + dcs_set_backlight(connector, 0); >> + >> + for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { >> + u8 ctrl = 0; >> + >> + dsi_device = intel_dsi->dsi_hosts[port]->device; >> + >> + mipi_dsi_dcs_read(dsi_device, >> MIPI_DCS_GET_CONTROL_DISPLAY, >> + &ctrl, sizeof(ctrl)); >> + >> + ctrl &= ~CONTROL_DISPLAY_BL; >> + ctrl &= ~CONTROL_DISPLAY_DD; >> + ctrl &= ~CONTROL_DISPLAY_BCTRL; >> + >> + mipi_dsi_dcs_write(dsi_device, >> MIPI_DCS_WRITE_CONTROL_DISPLAY, >> + &ctrl, sizeof(ctrl)); >> + } >> +} >> + >> +static void dcs_enable_backlight(struct intel_connector *connector) >> +{ >> + struct intel_encoder *encoder = connector->encoder; >> + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); >> + struct intel_panel *panel = &connector->panel; >> + struct mipi_dsi_device *dsi_device; >> + enum port port; >> + >> + for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { >> + u8 ctrl = 0; >> + >> + dsi_device = intel_dsi->dsi_hosts[port]->device; >> + >> + mipi_dsi_dcs_read(dsi_device, >> MIPI_DCS_GET_CONTROL_DISPLAY, >> + &ctrl, sizeof(ctrl)); >> + >> + ctrl |= CONTROL_DISPLAY_BL; >> + ctrl |= CONTROL_DISPLAY_DD; >> + ctrl |= CONTROL_DISPLAY_BCTRL; >> + >> + mipi_dsi_dcs_write(dsi_device, >> MIPI_DCS_WRITE_CONTROL_DISPLAY, >> + &ctrl, sizeof(ctrl)); >> + } >> + >> + dcs_set_backlight(connector, panel->backlight.level); >> +} >> + >> +static int dcs_setup_backlight(struct intel_connector *connector, >> + enum pipe unused) >> +{ >> + struct intel_panel *panel = &connector->panel; >> + >> + panel->backlight.max = PANEL_PWM_MAX_VALUE; >> + panel->backlight.level = PANEL_PWM_MAX_VALUE; >> + >> + return 0; >> +} >> + >> +int intel_dsi_dcs_init_backlight_funcs(struct intel_connector >> *intel_connector) >> +{ >> + struct drm_device *dev = intel_connector->base.dev; >> + struct drm_i915_private *dev_priv = dev->dev_private; >> + struct intel_encoder *encoder = intel_connector->encoder; >> + struct intel_panel *panel = &intel_connector->panel; >> + >> + if (dev_priv->vbt.backlight.type != INTEL_BACKLIGHT_DSI_DCS) >> + return -ENODEV; >> + >> + if (WARN_ON(encoder->type != INTEL_OUTPUT_DSI)) >> + return -EINVAL; >> + >> + panel->backlight.setup = dcs_setup_backlight; >> + panel->backlight.enable = dcs_enable_backlight; >> + panel->backlight.disable = dcs_disable_backlight; >> + panel->backlight.set = dcs_set_backlight; >> + panel->backlight.get = dcs_get_backlight; >> + >> + return 0; >> +} >> diff --git a/drivers/gpu/drm/i915/intel_panel.c >> b/drivers/gpu/drm/i915/intel_panel.c >> index 828f0fcaaaf8..efaee7a7f933 100644 >> --- a/drivers/gpu/drm/i915/intel_panel.c >> +++ b/drivers/gpu/drm/i915/intel_panel.c >> @@ -1722,6 +1722,10 @@ intel_panel_init_backlight_funcs(struct >> intel_panel *panel) >> intel_dp_aux_init_backlight_funcs(connector) == 0) >> return; >> >> + if (connector->base.connector_type == >> DRM_MODE_CONNECTOR_DSI && >> + intel_dsi_dcs_init_backlight_funcs(connector) == 0) >> + return; >> + >> if (IS_BROXTON(dev_priv)) { >> panel->backlight.setup = bxt_setup_backlight; >> panel->backlight.enable = bxt_enable_backlight; >> -- >> 2.1.4 > -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx