[PATCH v14 0/17] Add Analogix Core Display Port Driver
Yakir Yang
ykk at rock-chips.com
Mon Apr 4 19:06:06 PDT 2016
Hi Daniel,
On 03/31/2016 06:15 PM, Daniel Vetter wrote:
> On Mon, Feb 15, 2016 at 07:08:05PM +0800, Yakir Yang wrote:
>> Hi all,
>>
>> The Samsung Exynos eDP controller and Rockchip RK3288 eDP controller
>> share the same IP, so a lot of parts can be re-used. I split the common
>> code into bridge directory, then rk3288 and exynos only need to keep
>> some platform code. Cause I can't find the exact IP name of exynos dp
>> controller, so I decide to name dp core driver with "analogix" which I
>> find in rk3288 eDP TRM
>>
>> But there are still three light registers setting different between
>> exynos and rk3288.
>> 1. RK3288 have five special pll registers which not indicate in exynos
>> dp controller.
>> 2. The address of DP_PHY_PD(dp phy power manager register) are different
>> between rk3288 and exynos.
>> 3. Rk3288 and exynos have different setting with AUX_HW_RETRY_CTL(dp debug
>> register).
>>
>> Due to Mark Yao have introduced the ATOMIC support to Rockchip drm, so it's
>> okay to use the ATOMIC helpers functions in connector_funcs. No need to splict
>> the connector init to platform driver anymore, and this is the biggest change
>> since version 11.
>>
>> This v14 didn't have lots of new changes which seems not the correct time to
>> upgrade the version number, but I have changed ordering of patches (adding 2
>> more, and removing 2 out). Especially to prevent confusing people, so I updated
>> the whole series.
> So I'm jumping into this part way late, but just noticed (well Thierry
> pointed this out to me) that the exynos dp driver reinvents all the dp and
> dp-aux helpers we already. That's somewhat okish for a private driver (and
> exynos has a reputation for that kind of stuff), but imo not ok for a
> shared driver.
>
> Not saying this should block merging this patch, but it really needs to be
> addressed. All the dp aux and edid read code in the current
> exynos_dp_core/reg.c files needs to be replaced with dp helpers and the
> core i2c edid reading code.
>
> Who's going to sign up to do this?
Volunteer to that, after finish this thread, I would send new series to
switch to take use of dp helper.
:-D
- Yakir
> -Daniel
>
>> Thanks,
>> - Yakir
>>
>>
>> Changes in v14:
>> - Rebase the new changes in imx-dp driver
>> - Split up this patch into 3 parts, make this easy to review (Heiko)
>> - Remove the Rockchip DP PHY to an separate thread (Heiko)
>> https://patchwork.kernel.org/patch/8312701/
>>
>> Changes in v13:
>> - Use .enable instead of preprare/commit in encoder_helper_funcs (Heiko)
>> - Fix the missing parameters with drm_encoder_init() helper function. (Heiko)
>>
>> Changes in v12:
>> - Move the connector init to analogix_dp driver, and using ATOMIC helper (Heiko)
>> - Add the ack from Jingoo
>> - Remove the enum link_rate_type struct, using the marcos in drm_dp_helper.h (Jingoo)
>>
>> Changes in v11:
>> - Uses tabs to fix the indentation issues in analogix_dp_core.h (Heiko)
>> - Rename the "analogix,need-force-hpd" to common 'force-hpd' (Rob)
>> - Add the ack from Rob Herring
>> - Revert parts of Gustavo Padovan's changes in commit:
>> drm/exynos: do not start enabling DP at bind() phase
>> Add dp phy poweron function in bind time.
>> - Move the panel prepare from get_modes time to bind time, and move
>> the panel unprepare from bridge->disable to unbind time. (Heiko)
>>
>> Changes in v10:
>> - Add the ack from Rob Herring
>> - Correct the ROCKCHIP_ANALOGIX_DP indentation in Kconfig to tabs here (Heiko)
>> - Add the ack from Rob Herring
>> - Remove the surplus "plat_data" check. (Heiko)
>> - switch (dp->plat_data && dp->plat_data->dev_type) {
>> + switch (dp->plat_data->dev_type) {
>>
>> Changes in v9:
>> - Document more details for 'ports' property.
>>
>> Changes in v8:
>> - Correct the right document path of display-timing.txt (Heiko)
>> - Correct the misspell of 'from' to 'frm'. (Heiko)
>> - Modify the commit subject name. (Heiko)
>>
>> Changes in v7:
>> - Back to use the of_property_read_bool() interfacs to provoid backward
>> compatibility of "hsync-active-high" "vsync-active-high" "interlaced"
>> to avoid -EOVERFLOW error (Krzysztof)
>>
>> Changes in v6:
>> - Fix the Kconfig recursive dependency (Javier)
>> - Fix Peach Pit hpd property name error:
>> - hpd-gpio = <&gpx2 6 0>;
>> + hpd-gpios = <&gpx2 6 0>;
>>
>> Changes in v5:
>> - Correct the check condition of gpio_is_valid when driver try to get
>> the "hpd-gpios" DT propery. (Heiko)
>> - Move the platform attach callback in the front of core driver bridge
>> attch function. Cause once platform failed at attach, core driver should
>> still failed, so no need to init connector before platform attached (Krzysztof)
>> - Keep code style no changes with the previous exynos_dp_code.c in this
>> patch, and update commit message about the new export symbol (Krzysztof)
>> - Gather the device type patch (v4 11/16) into this one. (Krzysztof)
>> - leave out the connector registration to analogix platform driver. (Thierry)
>> - Resequence this patch after analogix_dp driver have been split
>> from exynos_dp code, and rephrase reasonable commit message, and
>> remove some controversial style (Krzysztof)
>> - analogix_dp_write_byte_to_dpcd(
>> - dp, DP_TEST_RESPONSE,
>> + analogix_dp_write_byte_to_dpcd(dp,
>> + DP_TEST_RESPONSE,
>> DP_TEST_EDID_CHECKSUM_WRITE);
>> - Switch video timing type to "u32", so driver could use "of_property_read_u32"
>> to get the backword timing values. Krzysztof suggest me that driver could use
>> the "of_property_read_bool" to get backword timing values, but that interfacs
>> would modify the original drm_display_mode timing directly (whether those
>> properties exists or not).
>> - Correct the misspell in commit message. (Krzysztof)
>> - Remove the empty line at the end of document, and correct the endpoint
>> numbers in the example DT node, and remove the regulator iomux setting
>> in driver code while using the pinctl in devicetree instead. (Heiko)
>> - Add device type declared, cause the previous "platform device type
>> support (v4 11/16)" already merge into (v5 02/14).
>> - Implement connector registration code. (Thierry)
>> - Split binding doc's from driver changes. (Rob)
>> - Add eDP hotplug pinctrl property. (Heiko)
>>
>> Changes in v4:
>> - Update "analogix,hpd-gpios" to "hpd-gpios" DT propery. (Rob)
>> - Rename "analogix_dp-exynos.c" file name to "exynos_dp.c" (Jingoo)
>> - Create a separate folder for analogix code in bridge/ (Archit)
>> - Update commit message more readable. (Jingoo)
>> - Adjust the order from 05 to 04
>> - Provide backword compatibility with samsung. (Krzysztof)
>> - Split all DTS changes, and provide backward compatibility. Mark old
>> properties as deprecated but still support them. (Krzysztof)
>> - Update "analogix,hpd-gpio" to "hpd-gpios" prop name. (Rob)
>> - Deprecated some properties which could parsed from Edid/Mode/DPCD. (Thierry)
>> "analogix,color-space" & "analogix,color-depth" &
>> "analogix,link-rate" & "analogix,lane-count" &
>> "analogix,ycbcr-coeff" & "analogix,dynamic-range" &
>> "vsync-active-high" & "hsync-active-high" & "interlaces"
>> - Separate all DTS changes to a separate patch. (Krzysztof)
>> - Remove some deprecated DT properties in rockchip dp document.
>> - Seprate the link-rate and lane-count limit out with the device_type
>> flag. (Thierry)
>> - Take Jingoo suggest, add commit messages.
>> - Call drm_panel_prepare() in .get_modes function, ensure panel should
>> power on before driver try to read edid message.
>>
>> Changes in v3:
>> - Move exynos's video_timing code to analogix_dp-exynos platform driver,
>> add get_modes method to struct analogix_dp_plat_data. (Thierry)
>> - Rename some "samsung*" dts propery to "analogix*". (Heiko)
>> - The link_rate and lane_count shouldn't config to the DT property value
>> directly, but we can take those as hardware limite. For example, RK3288
>> only support 4 physical lanes of 2.7/1.62 Gbps/lane, so DT property would
>> like "link-rate = 0x0a" "lane-count = 4". (Thierry)
>> - Dynamic parse video timing info from struct drm_display_mode and
>> struct drm_display_info. (Thierry)
>> - Add devicetree binding documents. (Heiko)
>> - Remove sync pol & colorimetry properies from the new analogix dp driver
>> devicetree binding. (Thierry)
>> - Update the exist exynos dtsi file with the latest DP DT properies.
>> - Leave "sclk_edp_24m" to rockchip dp phy driver which name to "24m",
>> and leave "sclk_edp" to analogix dp core driver which name to "dp",
>> and leave "pclk_edp" to rockchip dp platform driver which name to
>> "pclk". (Thierry & Heiko)
>> - Add devicetree binding document. (Heiko)
>> - Remove "rockchip,panel" DT property, take use of remote point to get panel
>> node. (Heiko)
>> - Add the new function point dp_platdata->get_modes() init.
>> - Add "analogix,need-force-hpd" to indicate whether driver need foce
>> hpd when hpd detect failed.
>> - move dp hpd detect to connector detect function.
>> - Add edid modes parse support
>>
>> Changes in v2:
>> - Remove new copyright (Jingoo)
>> - Fix compiled failed due to analogix_dp_device misspell
>> - Improved commit message more readable, and avoid using some
>> uncommon style like bellow: (Joe Preches)
>> - retval = exynos_dp_read_bytes_from_i2c(...
>> ...);
>> + retval =
>> + exynos_dp_read_bytes_from_i2c(......);
>> - Get panel node with remote-endpoint method, and create devicetree binding
>> for driver. (Heiko)
>> - Remove the clock enable/disbale with "sclk_edp" & "sclk_edp_24m",
>> leave those clock to rockchip dp phy driver.
>> - Fix compile failed dut to phy_pd_addr variable misspell error
>>
>> Heiko Stuebner (2):
>> drm/exynos: dp: rename implementation specific driver part
>> drm: bridge: analogix/dp: rename register constants
>>
>> Yakir Yang (15):
>> drm: bridge: analogix/dp: split exynos dp driver to bridge directory
>> drm: bridge: analogix/dp: fix some obvious code style
>> drm: bridge: analogix/dp: remove duplicate configuration of link rate
>> and link count
>> drm: bridge: analogix/dp: dynamic parse sync_pol & interlace &
>> dynamic_range
>> dt-bindings: add document for analogix display port driver
>> ARM: dts: exynos/dp: remove some properties that deprecated by
>> analogix_dp driver
>> drm: rockchip: dp: add rockchip platform dp driver
>> dt-bindings: add document for rockchip variant of analogix_dp
>> drm: bridge: analogix/dp: add some rk3288 special registers setting
>> drm: bridge: analogix/dp: add max link rate and lane count limit for
>> RK3288
>> drm: bridge: analogix/dp: try force hpd after plug in lookup failed
>> drm: bridge: analogix/dp: move hpd detect to connector detect function
>> drm: bridge: analogix/dp: add edid modes parse in get_modes method
>> drm: bridge: analogix/dp: add panel prepare/unprepare in
>> suspend/resume time
>> drm: bridge: analogix/dp: Fix the possible dead lock in bridge disable
>> time
>>
>> .../bindings/display/bridge/analogix_dp.txt | 52 +
>> .../bindings/display/exynos/exynos_dp.txt | 93 +-
>> .../display/rockchip/analogix_dp-rockchip.txt | 92 ++
>> arch/arm/boot/dts/exynos5250-arndale.dts | 2 -
>> arch/arm/boot/dts/exynos5250-smdk5250.dts | 2 -
>> arch/arm/boot/dts/exynos5250-snow-common.dtsi | 4 +-
>> arch/arm/boot/dts/exynos5250-spring.dts | 4 +-
>> arch/arm/boot/dts/exynos5420-peach-pit.dts | 4 +-
>> arch/arm/boot/dts/exynos5420-smdk5420.dts | 2 -
>> arch/arm/boot/dts/exynos5800-peach-pi.dts | 2 -
>> drivers/gpu/drm/bridge/Kconfig | 2 +
>> drivers/gpu/drm/bridge/Makefile | 1 +
>> drivers/gpu/drm/bridge/analogix/Kconfig | 3 +
>> drivers/gpu/drm/bridge/analogix/Makefile | 1 +
>> drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1430 ++++++++++++++++++
>> drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 281 ++++
>> drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 1320 +++++++++++++++++
>> .../analogix/analogix_dp_reg.h} | 270 ++--
>> drivers/gpu/drm/exynos/Kconfig | 3 +-
>> drivers/gpu/drm/exynos/Makefile | 2 +-
>> drivers/gpu/drm/exynos/exynos_dp.c | 324 +++++
>> drivers/gpu/drm/exynos/exynos_dp_core.c | 1510 --------------------
>> drivers/gpu/drm/exynos/exynos_dp_core.h | 282 ----
>> drivers/gpu/drm/exynos/exynos_dp_reg.c | 1263 ----------------
>> drivers/gpu/drm/rockchip/Kconfig | 9 +
>> drivers/gpu/drm/rockchip/Makefile | 1 +
>> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 384 +++++
>> include/drm/bridge/analogix_dp.h | 41 +
>> 28 files changed, 4115 insertions(+), 3269 deletions(-)
>> create mode 100644 Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
>> create mode 100644 Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt
>> create mode 100644 drivers/gpu/drm/bridge/analogix/Kconfig
>> create mode 100644 drivers/gpu/drm/bridge/analogix/Makefile
>> create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
>> create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>> rename drivers/gpu/drm/{exynos/exynos_dp_reg.h => bridge/analogix/analogix_dp_reg.h} (62%)
>> create mode 100644 drivers/gpu/drm/exynos/exynos_dp.c
>> delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.c
>> delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.h
>> delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_reg.c
>> create mode 100644 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>> create mode 100644 include/drm/bridge/analogix_dp.h
>>
>> --
>> 1.9.1
>>
>>
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