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  about 3 years ago by tdz | Reply

  Day 1: Today I returned to my old driver for SiS PCI devices, which used to work 3yrs ago. Admittedly, the driver has bit-rotted quite a bit. I since updated it and added atomic modesetting. But I never really tested these changes. I can get the modes from the monitor via EDID functionality and the driver now detects the VRAM size correctly. My monitor reports a signal error, which indicates a bug when programming display resolution or timing. Fixing the driver is what I currently do. I'll also have to update it for the 315 chip. My hope is that I can then replace the PCI-bus functionality with USB and have a semi-working USB driver later this week.

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Day 1: Today I returned to my old driver for SiS PCI devices, which used to work 3yrs ago. Admittedly, the driver has bit-rotted quite a bit. I since updated it and added atomic modesetting. But I never really tested these changes. I can get the modes from the monitor via EDID functionality and the driver now detects the VRAM size correctly. My monitor reports a signal error, which indicates a bug when programming display resolution or timing. Fixing the driver is what I currently do. I'll also have to update it for the 315 chip. My hope is that I can then replace the PCI-bus functionality with USB and have a semi-working USB driver later this week.
 
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Reply to tdz
Day 1: Today I returned to my old driver for SiS PCI devices, which used to work 3yrs ago. Admittedly, the driver has bit-rotted quite a bit. I since updated it and added atomic modesetting. But I never really tested these changes. I can get the modes from the monitor via EDID functionality and the driver now detects the VRAM size correctly. My monitor reports a signal error, which indicates a bug when programming display resolution or timing. Fixing the driver is what I currently do. I'll also have to update it for the 315 chip. My hope is that I can then replace the PCI-bus functionality with USB and have a semi-working USB driver later this week.
---
# A First Level Header
## A Second Level Header

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* Use asterisks
* for lists

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This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

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  about 3 years ago by tdz | Reply

  Day 2: I'm still working on getting the old PCI-based SiS driver to work correctly within the current kernel. I managed to get the display mode set and improved color-format settings. The display still looks wrong, but it's getting better. I give it one more day. No matter what the state is tomorrow, I'll push for USB support on Thursday.

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Edit Comment 5328
# A First Level Header
## A Second Level Header

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Day 2: I'm still working on getting the old PCI-based SiS driver to work correctly within the current kernel. I managed to get the display mode set and improved color-format settings. The display still looks wrong, but it's getting better. I give it one more day. No matter what the state is tomorrow, I'll push for USB support on Thursday.
 
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Reply to tdz
Day 2: I'm still working on getting the old PCI-based SiS driver to work correctly within the current kernel. I managed to get the display mode set and improved color-format settings. The display still looks wrong, but it's getting better. I give it one more day. No matter what the state is tomorrow, I'll push for USB support on Thursday.
---
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

This is a user link @hans

This is a project link hw#some-cool-title
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  about 3 years ago by tdz | Reply

  Day 3: The old driver uses the device VRAM directly. Today I converted it to DRM's SHMEM helpers. This is necessary to work with the USB device. SHMEM buffers will serve as shadow framebuffers that the driver can copy over USB into the device's memory.

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Edit Comment 5372
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

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Day 3: The old driver uses the device VRAM directly. Today I converted it to DRM's SHMEM helpers. This is necessary to work with the USB device. SHMEM buffers will serve as shadow framebuffers that the driver can copy over USB into the device's memory.
 
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Reply to tdz
Day 3: The old driver uses the device VRAM directly. Today I converted it to DRM's SHMEM helpers. This is necessary to work with the USB device. SHMEM buffers will serve as shadow framebuffers that the driver can copy over USB into the device's memory.
---
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

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  about 3 years ago by tdz | Reply

  Day 4: I began to turn the PCI driver into a USB driver. Each PCI I/O operation has to be converted to a USB bulk message. The rsp code is already in the old kernel stub driver somewhere. The PCI device is a VGA card and therefore POSTed by the BIOS. For the USB device, I expect that there might be an additional POST process necessary. The old userspace driver should have the rsp code somewhere. No way I'll be able to finish all of this by the end of the week.

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Edit Comment 5466
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

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This is a project link hw#some-cool-title
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Day 4: I began to turn the PCI driver into a USB driver. Each PCI I/O operation has to be converted to a USB bulk message. The rsp code is already in the old kernel stub driver somewhere. The PCI device is a VGA card and therefore POSTed by the BIOS. For the USB device, I expect that there might be an additional POST process necessary. The old userspace driver should have the rsp code somewhere. No way I'll be able to finish all of this by the end of the week.
 
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Reply to tdz
Day 4: I began to turn the PCI driver into a USB driver. Each PCI I/O operation has to be converted to a USB bulk message. The rsp code is already in the old kernel stub driver somewhere. The PCI device is a VGA card and therefore POSTed by the BIOS. For the USB device, I expect that there might be an additional POST process necessary. The old userspace driver should have the rsp code somewhere. No way I'll be able to finish all of this by the end of the week.
---
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

This is a user link @hans

This is a project link hw#some-cool-title
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  about 3 years ago by tdz | Reply

  Day 5: After some back and forth, I'm able to communicate with the USB device. No mode setting yet, just basic communication. I extracted this form the old sisusb driver in the kernel. I'll probably continue this project during the next hackweek.

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Edit Comment 5494
# A First Level Header
## A Second Level Header

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Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

This is a user link @hans

This is a project link hw#some-cool-title
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Day 5: After some back and forth, I'm able to communicate with the USB device. No mode setting yet, just basic communication. I extracted this form the old sisusb driver in the kernel. I'll probably continue this project during the next hackweek.
 
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Reply to tdz
Day 5: After some back and forth, I'm able to communicate with the USB device. No mode setting yet, just basic communication. I extracted this form the old sisusb driver in the kernel. I'll probably continue this project during the next hackweek.
---
# A First Level Header
## A Second Level Header

Use one asterisk to *emphasize*

Use two asterisks for **strong emphasis**

* Use asterisks
* for lists

This is an [example link](http://example.com/)

This is an ![example image](http://paste.opensuse.org/view/raw/68957446)

This is a user link @hans

This is a project link hw#some-cool-title
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