linux-stable.git/drivers/gpu/drm/sun4i, branch v5.1.2

drm/sun4i: Unbind components before releasing DRM and memory

2019-04-24T13:09:08+00:00

Our components may still be using the DRM device driver (if only to
access our driver's private data), so make sure to unbind them before
the final drm_dev_put.

Also release our reserved memory after component unbind instead of
before to match reverse creation order.

Fixes: f5a9ed867c83 ("drm/sun4i: Fix component unbinding and component master deletion")
Signed-off-by: Paul Kocialkowski 
Reviewed-by: Chen-Yu Tsai 
Link: https://patchwork.freedesktop.org/patch/msgid/20190424090413.6918-1-paul.kocialkowski@bootlin.com

drm/sun4i: Fix component unbinding and component master deletion

2019-04-18T14:26:53+00:00

For our component-backed driver to be properly removed, we need to
delete the component master in sun4i_drv_remove and make sure to call
component_unbind_all in the master's unbind so that all components are
unbound when the master is.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-4-paul.kocialkowski@bootlin.com

drm/sun4i: Set device driver data at bind time for use in unbind

2019-04-18T14:26:36+00:00

Our sun4i_drv_unbind gets the drm device using dev_get_drvdata.
However, that driver data is never set in sun4i_drv_bind.

Set it there to avoid getting a NULL pointer at unbind time.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-3-paul.kocialkowski@bootlin.com

drm/sun4i: Add missing drm_atomic_helper_shutdown at driver unbind

2019-04-18T14:26:22+00:00

A call to drm_atomic_helper_shutdown is required to properly release
the internal references taken by the core and avoid warnings about
leaking objects. Add it since it was missing.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190418132727.5128-2-paul.kocialkowski@bootlin.com

drm/sun4i: tcon top: Fix NULL/invalid pointer dereference in sun8i_tcon_top_un/bind

2019-04-08T08:30:23+00:00

There are two problems here:

1. Not all clk_data->hws[] need to be initialized, depending on various
   configured quirks. This leads to NULL ptr deref in
   clk_hw_unregister_gate() in sun8i_tcon_top_unbind()
2. If there is error when registering the clk_data->hws[],
   err_unregister_gates error path will try to unregister
   IS_ERR()=true (invalid) pointer.

For problem (1) I have this stack trace:

Unable to handle kernel NULL pointer dereference at virtual
  address 0000000000000008
Call trace:
 clk_hw_unregister+0x8/0x18
 clk_hw_unregister_gate+0x14/0x28
 sun8i_tcon_top_unbind+0x2c/0x60
 component_unbind.isra.4+0x2c/0x50
 component_bind_all+0x1d4/0x230
 sun4i_drv_bind+0xc4/0x1a0
 try_to_bring_up_master+0x164/0x1c0
 __component_add+0xa0/0x168
 component_add+0x10/0x18
 sun8i_dw_hdmi_probe+0x18/0x20
 platform_drv_probe+0x3c/0x70
 really_probe+0xcc/0x278
 driver_probe_device+0x34/0xa8

Problem (2) was identified by head scratching.

Signed-off-by: Ondrej Jirman 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190405233048.3823-1-megous@megous.com

drm/sun4i: DW HDMI: Lower max. supported rate for H6

2019-04-05T08:44:10+00:00

Currently resolutions with pixel clock higher than 340 MHz don't work
with H6 HDMI controller. They just produce a blank screen.

Limit maximum pixel clock rate to 340 MHz until scrambling is supported.

Cc: stable@vger.kernel.org # 5.0
Fixes: 40bb9d3147b2 ("drm/sun4i: Add support for H6 DW HDMI controller")
Signed-off-by: Jernej Skrabec 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190324190609.32721-1-jernej.skrabec@siol.net

Merge v5.0-rc7 into drm-next

2019-02-18T03:27:15+00:00

Backmerging for nouveau and imx that needed some fixes for next pulls.

Signed-off-by: Dave Airlie

drm/sun4i: dsi: Fix unitialized variable warning

2019-02-08T09:28:11+00:00

Since the DPHY rework, one error path doesn't set the return error code
before jumping to its error label, which in turns make gcc (rightfully)
complain about the variable holding the error code being uninitialized.

Fix this.

Fixes: bb3b6fcb6849 ("sun6i: dsi: Convert to generic phy handling")
Reported-by: Stephen Rothwell 
Reviewed-by: Daniel Vetter 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190208090540.19626-1-maxime.ripard@bootlin.com

phy: Move Allwinner A31 D-PHY driver to drivers/phy/

2019-02-07T08:34:49+00:00

Now that our MIPI D-PHY driver has been converted to the phy framework,
let's move it into the drivers/phy directory.

Reviewed-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/2447609da5b80f148c79b2b2a263a0e779f3e82f.1548085432.git-series.maxime.ripard@bootlin.com

sun6i: dsi: Convert to generic phy handling

2019-02-07T08:34:32+00:00

Now that we have everything in place in the PHY framework to deal in a
generic way with MIPI D-PHY phys, let's convert our PHY driver and its
associated DSI driver to that new API.

Reviewed-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/dc6450e2978b6dafcc464595ad06204d22d2658f.1548085432.git-series.maxime.ripard@bootlin.com