kernel/linux.git/drivers/gpu/drm/ast/Makefile, branch v6.18.22

drm/ast: Move Gen2+ and Gen1 POST code to separate source files

2025-07-09T12:36:18+00:00

Move POST code for Gen2+ and Gen1 to separate source files and hide it in ast_2100_post() ans ast_2000_post(). With P2A configuration, the POST logic for these chip generations has been mingled in ast_init_dram_reg(). Hence, handle all generations in a single change. The split simplifies both cases. Also move the DRAM init tables for each Gen into the respective source file. No changes to the overall logic. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250706162816.211552-6-tzimmermann@suse.de

drm/ast: Move Gen4+ POST code to separate source file

2025-07-09T12:36:17+00:00

Move POST code for Gen4+ to separate source file and hide it in ast_2300_post(). With P2A configuration, it performs a full board POST and enables the transmitter chip; otherwise it only enables the transmitter chip. Also fix coding style in several places. No changes to the overall logic. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250706162816.211552-5-tzimmermann@suse.de

drm/ast: Move Gen6+ POST code to separate source file

2025-07-09T12:36:14+00:00

Move POST code for Gen6+ to separate source file and hide it in ast_2500_post(). With P2A configuration, it performs a full board POST; otherwise it enables the transmitter chip. No changes to the overall logic. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250706162816.211552-4-tzimmermann@suse.de

drm/ast: Move Gen7+ POST code to separate source file

2025-07-09T12:36:13+00:00

Move POST code for Gen7+ to separate source file and hide it in ast_2600_post(). There's not much going on here except for enabling the DP transmitter chip. v2: - simplify logic (Jocelyn) Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://lore.kernel.org/r/20250706162816.211552-3-tzimmermann@suse.de

drm/ast: cursor: Move implementation to separate source file

2025-02-20T07:38:34+00:00

Move the cursor code into a separate source file for readability. No functional changes. v2: - include Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20250217122336.230067-5-tzimmermann@suse.de

drm/ast: Add helpers for VBIOS mode lookup

2025-02-03T13:01:12+00:00

Mode lines are independent from hardware Gen or TX chip, so hide all VBIOS mode tables in ast_vbios.c. Move the look-up code for VBIOS modes from ast_vbios_get_mode_info() to ast_vbios_find_mode(). The new look-up function respects the supported-mode flags in struct ast_device. For example, if a device does not have struct ast_device.support_fullhd set, the helper does not return a valid mode for 1920x1080. Taking the supported-mode flags into account allows for making the VBIOS tables the single reference for validating and setting display modes against hardware capabilities. v2: - replace mode switch with look-up table (Jocelyn) Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20250131092257.115596-11-tzimmermann@suse.de

drm/ast: Move code for physical outputs into separate files

2024-08-22T07:12:46+00:00

Move the modesetting code for the various transmitter chips into their own source files before adding BMC support. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240815151953.184679-2-tzimmermann@suse.de

drm/ast: Move DDC code to ast_ddc.{c,h}

2024-04-02T08:40:46+00:00

Rename ast_i2c.c to ast_ddc.c and move its interface into the new header ast_ddc.h. Update all include statements as necessary and change the adapter name to 'AST DDC bus'. This avoids including I2C headers in the driver's main header file, which doesn't need them. Renaming files to _ddc indicates that the code is about the DDC. I2C is really just the underlying bus here. Signed-off-by: Thomas Zimmermann Reviewed-by: Sui Jingfeng Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-6-tzimmermann@suse.de

drm/ast: Create the driver for ASPEED proprietory Display-Port

2022-05-03T14:04:03+00:00

V1: 1. The MCU FW controling ASPEED DP is loaded by BMC boot loader. 2. Driver starts after CR[3:1] == 111b that indicates Tx is ASTDP, and CRD1[5] has been asserted by BMVC boot loader. 3. EDID is prioritized by DP monitor. 4. DP's EDID has high priority to decide resolution supporting. V2: Modules description: 1. ASTDP (ASPEED DisplayPort) is controlled by dedicated AST-MCU (ASPEED propriatary MCU). 2. MCU is looping in charged of HPD, Read EDID, Link Training with DP sink. 3. ASTDP and AST-MUC reside in BMC (Baseboard Management controller) addressing-space. 4. ASPEED DRM driver requests MCU to get HPD and EDID by CR-scratched register. Booting sequence: 1. Check if TX is ASTDP // ast_dp_launch() 2. Check if DP-MCU FW has loaded // ast_dp_launch() 3. Read EDID // ast_dp_read_edid() 4. Resolution switch // ast_dp_SetOutput() V3: 1. Remove unneeded semicolon. 2. Apply to git://anongit.freedesktop.org/drm/drm, instead of git://anongit.freedesktop.org/drm/drm-misc 3. Resolve auto build test WARNINGs on V1 patch. V4: 1. Sync code-base with kernel 5.17_rc6 2. Remove the define of DPControlPower, because DP chips need to be powered on to be used. 3. Remove the switches of PHY and Display from EDID procedure. 4. Revise increaing delay to fixed delay, because this version kernel doesn't detect minitor consistenntly. 5. Create clean-up code used for reset of power state on errors with -EIO manner. 6. Revise the DP detection by TX type and its DP-FW status during booting and resume. 7. Correct the CamelCase Style. 8. Use register reading while needing, and remove to hold full register. 9. Instead of 'u8', revise to 'bool' on swwitch of PHY and video. 10.Correct typo 11.Remove the duplicated copy of TX definition. 12.Use EDID_LENGTH as the constant of 128. Signed-off-by: KuoHsiang Chou Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20220428075603.20904-1-kuohsiang_chou@aspeedtech.com

drm/ast: Move I2C code into separate source file

2021-12-16T11:29:22+00:00

Move I2C code into its own source file. Makes the mode-setting code a little less convoluted. v3: * fix SPDX tag to say 'SPDX-License-Identifier' Signed-off-by: Thomas Zimmermann Acked-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-4-tzimmermann@suse.de