Linux Drivers for 7" Zed Touch Display Kit

Are there Linux drivers available for the 7" Zed Touch Display Kit? There is a precompiled example design called "Display Panel Ubuntu Tutorial for ZedBoard", and there is a ISE 14.4 patch file which references several header/source files located at "drivers/gpu/drm/zeddispkit/", but I haven't been able to locate these.

Any help would be greatly appreciated.

Thanks,
Greg

0 zedhed over 10 years ago

Hi Greg,

Applying that patch file should add the header/source files to the kernel source tree.

Regards,

-Kevin
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0 Former Member over 10 years ago in reply to zedhed

Thanks, Kevin. I didn't realize the patch included the missing files.
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0 jothin over 9 years ago in reply to zedhed

Hi,

The patch can be applied for xilinx_v2015.2 linux also
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0 armendzh over 9 years ago

I am trying to apply this patch to Xilinx_v2015.2.
Some files have changed from the version 14.4 for which this patch is made. Is there an updated patch for Xilinx v2015.2 available somewhere?

I am trying to get display kit to work with PetaLinux.
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0 armendzh over 9 years ago in reply to armendzh

After trying to patch PetaLinux 2015.2 using available patch from AVNET, I am getting following error or warnings when saving kernel configuration.

======================
configuration written to /home/adzh/zynq_mini-itx_amp10/subsystems/linux/configs/kernel/config

*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.

warning: (DRM_KMS_CMA_HELPER && DRM_RADEON && DRM_NOUVEAU && DRM_I915_FBDEV && DRM_EXYNOS && DRM_ROCKCHIP && DRM_GMA500 && DRM_UDL && DRM_AST && DRM_MGAG200 && DRM_CIRRUS_QEMU && DRM_ARMADA && DRM_RCAR_DU && DRM_SHMOBILE && DRM_OMAP && DRM_TILCDC && DRM_QXL && DRM_BOCHS && DRM_MSM_FBDEV && DRM_IMX && DRM_TEGRA_FBDEV) selects DRM_KMS_FB_HELPER which has unmet direct dependencies (HAS_IOMEM && DRM_KMS_HELPER)
warning: (DRM_KMS_CMA_HELPER && DRM_RADEON && DRM_NOUVEAU && DRM_I915_FBDEV && DRM_EXYNOS && DRM_ROCKCHIP && DRM_GMA500 && DRM_UDL && DRM_AST && DRM_MGAG200 && DRM_CIRRUS_QEMU && DRM_ARMADA && DRM_RCAR_DU && DRM_SHMOBILE && DRM_OMAP && DRM_TILCDC && DRM_QXL && DRM_BOCHS && DRM_MSM_FBDEV && DRM_IMX && DRM_TEGRA_FBDEV) selects DRM_KMS_FB_HELPER which has unmet direct dependencies (HAS_IOMEM && DRM_KMS_HELPER)
warning: (DRM_KMS_CMA_HELPER && DRM_RADEON && DRM_NOUVEAU && DRM_I915_FBDEV && DRM_EXYNOS && DRM_ROCKCHIP && DRM_GMA500 && DRM_UDL && DRM_AST && DRM_MGAG200 && DRM_CIRRUS_QEMU && DRM_ARMADA && DRM_RCAR_DU && DRM_SHMOBILE && DRM_OMAP && DRM_TILCDC && DRM_QXL && DRM_BOCHS && DRM_MSM_FBDEV && DRM_IMX && DRM_TEGRA_FBDEV) selects DRM_KMS_FB_HELPER which has unmet direct dependencies (HAS_IOMEM && DRM_KMS_HELPER)
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0 armendzh over 9 years ago

I started looking at updating display driver for PetaLinux and mini-ITX board to be able to use AVNET touch screen display.

I have everything updated except for display driver files. I pressume most of those errors are due to changes made to the framebuffer from the time of kernel 3.6 to kernel 3.19 (to which I am trying to update).

Here are error I am getting when building my image:
[code]
====================================================
[ALL ]   CC      drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.o
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c: In function 'zeddispkit_drm_crtc_update':
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:50:35: error: 'struct drm_crtc' has no member named 'fb'
[ALL ]   struct drm_framebuffer *fb = crtc->fb;
[ALL ]                                    ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:64:30: error: 'struct xilinx_vdma_config' has no member named 'hsize'
[ALL ]    zeddispkit_crtc->dma_config.hsize = mode->hdisplay * fb->bits_per_pixel / 8;
[ALL ]                               ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:65:30: error: 'struct xilinx_vdma_config' has no member named 'vsize'
[ALL ]    zeddispkit_crtc->dma_config.vsize = mode->vdisplay;
[ALL ]                               ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:66:30: error: 'struct xilinx_vdma_config' has no member named 'stride'
[ALL ]    zeddispkit_crtc->dma_config.stride = fb->pitches[0];
[ALL ]                               ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:74:18: error: expected ')' before 'offset'
[ALL ]       obj->paddr offset,
[ALL ]                   ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:73:10: error: too few arguments to function 'dmaengine_prep_slave_single'
[ALL ]    desc = dmaengine_prep_slave_single(zeddispkit_crtc->dma,
[ALL ]           ^
[ALL ] In file included from /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:27:0:
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/include/linux/dmaengine.h:710:47: note: declared here
[ALL ] static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
[ALL ]                                                ^
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c: In function 'zeddispkit_drm_crtc_create':
[ALL ] /home/adzh/petalinux/components/linux-kernel/xlnx-3.19/drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.c:197:2: error: implicit declaration of function 'drm_crtc_init' [-Werror=implicit-function-declaration]
[ALL ]   drm_crtc_init(dev, crtc, &zeddispkit_crtc_funcs);
[ALL ]   ^
[ALL ] cc1: some warnings being treated as errors
[ERROR] make[7]: *** [drivers/gpu/drm/zeddispkit/zeddispkit_drm_crtc.o] Error 1
[ERROR] make[6]: *** [drivers/gpu/drm/zeddispkit] Error 2
[ERROR] make[5]: *** [drivers/gpu/drm] Error 2
[ERROR] make[4]: *** [drivers/gpu] Error 2
[ERROR] make[3]: *** [drivers] Error 2
[ALL ] make[3]: *** Waiting for unfinished jobs....
[ALL ]   CC      net/ipv4/udplite.o
[ALL ]   CC      net/ipv6/udp_offload.o
[/code]
====================================================

First one has conflict with:

====================================================
[code]
struct drm_framebuffer *fb = crtc->fb;
[/code]

Next three can not find hsize, vsize and stride... (with dma_config defined as xilinx_vdma_config).
[code]
zeddispkit_crtc->dma_config.hsize = mode->hdisplay * fb->bits_per_pixel / 8;
zeddispkit_crtc->dma_config.vsize = mode->vdisplay;
zeddispkit_crtc->dma_config.stride = fb->pitches[0];
[/code]
====================================================

All three were previously defined in include/linux/amba/xilinx_dma.h:

====================================================
Kernel 3.6
[code]
struct xilinx_vdma_config {
        enum dma_transfer_direction direction;
                                        /* Channel direction */
        int vsize;                      /* Vertical size */
        int hsize;                      /* Horizontal size */
        int stride;                     /* Stride */
        int frm_dly;                    /* Frame delay */
        int gen_lock;                   /* Whether in gen-lock mode */
        int master;                     /* Master that it syncs to */
        int frm_cnt_en;                 /* Enable frame count enable */
        int park;                       /* Whether wants to park */
        int park_frm;                   /* Frame to park on */
        int coalesc;                    /* Interrupt coalescing threshold */
        int delay;                      /* Delay counter */
        int disable_intr;               /* Whether use interrupts */
        int reset;                      /* Reset Channel */
        int ext_fsync;                  /* External Frame Sync */
};
[/code]

Kernel 3.19
[code]
struct xilinx_vdma_config {
        int frm_dly;
        int gen_lock;
        int master;
        int frm_cnt_en;
        int park;
        int park_frm;
        int coalesc;
        int delay;
        int reset;
        int ext_fsync;
};
[/code]
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