Commit Graph

15 Commits

Author SHA1 Message Date
Imre Deak
6d129beac7 drm/i915: check port power domain when reading the encoder hw state
Since the encoder is tied to its port, we need to make sure the power
domain for that port is on before reading out the encoder HW state.

Note that this also covers also all connector get_hw_state handlers,
since all those just call the corresponding encoder get_hw_state
handler, which checks - after this change - for all power domains
the connector needs.

v2:
- no change
v3:
- push down the power domain checks into the specific encoder
  get_hw_state handlers (Daniel)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-03-07 22:36:52 +01:00
Imre Deak
671dedd212 drm/i915: get port power domain in connector detect handlers
The connector detect and get_mode handlers need to access the port
specific HW blocks to read the EDID etc. Get/put the port power domains
around these handlers.

v2:
- get port power domain for HDMI too (Ville)
- get port power domain for the DP,HDMI audio detect handlers (Jesse)
- Leave the intel_runtime_pm_get/put in the DP detect function in place.
  Instead of just removing them, these should be moved to the appropriate
  power_well enable/disable handlers. We can do this after Paulo's
  'Merge PC8 with runtime PM, v2' patchset.
v3:
- rebased on latest -nightly

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-03-07 22:36:51 +01:00
Imre Deak
4932e2c3c7 drm/i915: add unregister callback to connector
Since

commit d9255d5714
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date:   Thu Sep 26 20:05:59 2013 -0300

it became clear that we need to separate the unload sequence into two
parts:

1. remove all interfaces through which new operations on some object
   (crtc, encoder, connector) can be started and make sure all pending
   operations are completed
2. do the actual tear down of the internal representation of the above
   objects

The above commit achieved this separation for connectors by splitting
out the sysfs removal part from the connector's destroy callback and
doing this removal before calling drm_mode_config_cleanup() which does
the actual tear-down of all the drm objects.

Since we'll have to customize the interface removal part for different
types of connectors in the upcoming patches, add a new unregister
callback and move the interface removal part to it.

No functional change.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Antti Koskipää <antti.koskipaa@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-02-14 11:24:47 +01:00
Vandana Kannan
4b6ed685e4 drm/i915: Initialize downclock mode in panel init
Instead of modifying intel_panel in lvds_init_connector/dsi_init/
edp_init_connector, making changes to move intel_panel->downclock_mode
initialization to intel_panel_init()

v2: Jani's review comments incorporated
Removed downclock_mode local variable in dsi_init and
edp_init_connector

Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Signed-off-by: Pradeep Bhat <pradeep.bhat@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-02-12 18:53:05 +01:00
Shobhit Kumar
f6da28429a drm/i915: Parametrize the dphy and other spec specific parameters
The values of these parameters will be different for differnet panel
based on dsi rate, lane count, etc. Remove the hardcodings and make
these as parameters whch will be initialized in panel specific
sub-encoder implementaion.

This will also form groundwork for planned generic panel sub-encoder
implemntation based on VBT design enhancments to support multiple panels

v2: Mask away the port_bits before use

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-12-11 23:52:20 +01:00
Shobhit Kumar
a4a593be5d drm/i915: Remove redundant DSI PLL enabling
DSI PLL will get configured during crtc_enable using ->pre_pll_enable
and no need to do in ->mode_set

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-12-11 23:52:20 +01:00
Shobhit Kumar
1dbd7cb256 drm/i915: Reorganize the DSI enable/disable sequence
Basically ULPS handling during enable/disable has been moved to
pre_enable and post_disable phases. PLL and panel power disable
also has been moved to post_disable phase. The ULPS entry/exit
sequneces as suggested by HW team is as follows -

During enable time -
set DEVICE_READY --> Clear DEVICE_READY --> set DEVICE_READY

And during disable time to flush all FIFOs -
set ENTER_SLEEP --> EXIT_SLEEP --> ENTER_SLEEP

Also during disbale sequnece sub-encoder disable is moved to the end
after port is disabled.

v2: Based on comments from Ville
    - Detailed epxlaination in the commit messgae
    - Moved parameter changes out into another patch
    - Backlight enabling will be a new patch

v3: Updated as per Jani's comments
    - Removed the I915_WRITE_BITS as it is not needed
    - Moved panel_reset and send_otp_cmds hooks to dsi_pre_enable
    - Moved disable_panel_power hook to dsi_post_disable
    - Replace hardcoding with AFE_LATCHOUT

v4: Make intel_dsi_device_ready and intel_dsi_clear_device_ready static

Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-12-11 23:52:19 +01:00
Shobhit Kumar
e9fe51c665 drm/i915: Use FLISDSI interface for band gap reset
v2: Rebased on latest code

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@intel.com>
Reviewed-by: Jani Nikula<jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-12-11 23:52:17 +01:00
Shobhit Kumar
b9f5e07d02 drm/i915: Add more dev ops for MIPI sub encoder
Some panels require one time programming if they do not contain their
own eeprom for basic register initialization. The sequence is

Panel Reset --> Send OTP --> Enable Pixel Stream --> Enable the panel

v2: Based on review comments from Jani and Ville
    - Updated the commit message with more details
    - Move the new parameters out of this patch

Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-12-11 23:52:16 +01:00
Damien Lespiau
c19de8eb67 drm/i915: Return a drm_mode_status enum in the mode_valid vfuncs
We had some mode_valid() vfuncs returning an int, others the enum. Let's
use the latter everywhere.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-11-28 16:49:33 +01:00
Damien Lespiau
6f2bcceb27 drm/i915: Use pipe_name() instead of the pipe number
Yet other direct usages of the pipe number instead of pipe_name().
We've been tracking them lately but managed to miss these last ones.

v2: Catch them all! (Ville)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-16 19:42:52 +02:00
Paulo Zanoni
d9255d5714 drm/i915: destroy connector sysfs files earlier
For some reason, every single time I try to run module_reload
something tries to read the connector sysfs files. This happens
after we destroy the encoders and before we destroy the connectors, so
when the sysfs read triggers the connector detect() function,
intel_conector->encoder points to memory that was already freed.

The bad backtrace is just:
    [<ffffffff8163ca9a>] dump_stack+0x54/0x74
    [<ffffffffa00c2c8e>] intel_dp_detect+0x1e/0x4b0 [i915]
    [<ffffffffa001913d>] status_show+0x3d/0x80 [drm]
    [<ffffffff813d5340>] dev_attr_show+0x20/0x60
    [<ffffffff81221f50>] ? sysfs_read_file+0x80/0x1b0
    [<ffffffff81221f79>] sysfs_read_file+0xa9/0x1b0
    [<ffffffff811aaf1e>] vfs_read+0x9e/0x170
    [<ffffffff811aba4c>] SyS_read+0x4c/0xa0
    [<ffffffff8164e392>] system_call_fastpath+0x16/0x1b

But if you add tons of memory checking debug options to your Kernel
you'll also see:
 - general protection fault: 0000
 - BUG kmalloc-4096 (Tainted: G      D W   ): Poison overwritten
 - INFO: Allocated in intel_ddi_init+0x65/0x270 [i915]
 - INFO: Freed in intel_dp_encoder_destroy+0x69/0xb0 [i915]
Among a bunch of other error messages.

So this commit just destroys the sysfs files before both the encoder
and connectors are freed.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-01 07:45:48 +02:00
Shobhit Kumar
4ce8c9a720 drm/i915: Band Gap WA
Note: No one seems to have docs for this, so this patch here is just
unreviewed black magic :(

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: ymohanma <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Add note about the doc situation.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-09-04 17:34:49 +02:00
ymohanma
be4fc046be drm/i915: add VLV DSI PLL Calculations
v2:
 - Grab dpio_lock mutex in vlv_enable_dsi_pll().
 - Add and call vlv_disable_dsi_pll().

v3: Mostly based on Ville's review comments.
 - Only pipe A has DSI PLL lock bit.
 - Add more of CCK REG bit definitions for DSI PLL.
 - Make tables static.
 - Move clock gating out of the clock calculation functions.
 - DSI PLL LDO power gating.
 - Put alternative MNP from table calc behind #ifdef.

v4: s/CKK/CLK/ in the CCK REG bit definitions (Ville).

Signed-off-by: ymohanma <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-09-04 17:34:48 +02:00
Jani Nikula
4e646495c6 drm/i915: add basic MIPI DSI output support
This does not include any panel specific sub-encoders yet.

v2: Fix fixed mode handling (Daniel)

v3: Mostly based on Ville's review comments.
 - Fix MIPI_HS_TX_TIMEOUT.
 - DPI_ENABLE only for video mode.
 - Drop ULPS usage for now, use DEVICE_READY only.
 - Set MIPI_INIT_COUNT based on txclkesc.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-09-04 17:34:47 +02:00