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POEnable TV Out for Dev Kit 7000 on Android
 

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  1. POEnable TV Out for Dev Kit 7000 on Android
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    <p>I am using <a href="http://www.armkits.com/product/devkit7000.asp" rel="nofollow">DevKit7000</a> running Android 2.3.1, and I want to use TV Out (Composite) interface, but I am not getting any output (signal) on TV Out. Although I have enabled TV Out in the kernel. Here's the portion of configuration file (.config) file of kernel dealing with TV Out and video stuff.</p> <pre><code>config VIDEO_TV20=y config HDMI_CEC=y config HDMI_HPD=y config TV_FB=y CONFIG_VIDEO_SAMSUNG=y CONFIG_VIDEO_SAMSUNG_V4L2=y </code></pre> <p>And here's the portion of output of hyperterminal when the board boot up, (<strong><em>Please see the 2nd update</em></strong>)</p> <pre><code>[ 2.007845] FIMC0 registered successfully [ 2.011670] FIMC1 registered successfully [ 2.015652] FIMC2 registered successfully [ 2.018470] &lt;6&gt;S5PC1XX TVOUT Driver, (c) 2009 Samsung Electronics [ 2.025187] s5p-tvout s5p-tvout: hpd status is cable removed [ 2.036115] DBUG_PORT must not use AFC! [ 2.038533] Freeing init memory: 152K </code></pre> <p>This shows that TVOUT driver is sucessfully included and loaded, but i don't what's the meaning of <strong>hpd status is cable removed</strong>, If you can please tell what does that mean ?</p> <p>The only relevant link I could find on web regarding "Enabling TV OUT On Android" was <a href="http://www.omappedia.org/wiki/Kernel_TV-Out" rel="nofollow">this</a>, but this is for <a href="http://en.wikipedia.org/wiki/OMAP" rel="nofollow">OMAP</a> based devices but I am having <a href="http://en.wikipedia.org/wiki/ARM_architecture" rel="nofollow">ARM</a>.</p> <p>TV Out is also visible in the list of available devices, here's the output of <strong>ls /dev/devices/platform</strong> command in the adb shell.</p> <pre><code># ls sys/devices/platofrm uevent power power.0 s5pv210-nand smdkc110-rtc devkit7000-keypad s3c-g2d s5p-tvout s5p-cec s5p-hpd pvrsrvkm </code></pre> <p>Apparently everything is good but still TV OUT is not working. So If you can please tell how can I use(enable) TV OUT ?</p> <p><strong>Update:</strong> The output of <code>/sys/module/</code> is (edited for brevity):</p> <pre><code>cd /sys/module # ls s3cfb pvrsrvkm scsi_mod sg dm9000 usbcore ehci_hcd usb_storage u_ether tuner_xc2028 tuner_simple mt20xx tda8290 tea5767 tea5761 tda9887 xc5000 v4l1_compat mmc_core sdhci hid usbhid usbserialbinder snd snd_timer snd_pcm sch_htb </code></pre> <p><strong>2nd Update:</strong></p> <p>Deep look on the log on boot-up reveals the possible issue, here's the output of hyper-terminal on boot-up (only portion of output related to tv out):</p> <pre><code>[ 2.043158] &lt;6&gt;s5p_tv_init [ 2.046943] &lt;6&gt;S5PC1XX TVOUT Driver, (c) 2009 Samsung Electronics [Screwed]! [ 2.053992] &lt;6&gt; __devinit s5p_tv_probe [ 2.058895] &lt;6&gt; __devinit tv_clk_get [ 2.063516] &lt;6&gt; s5p_tv_base_clk_gate [ 2.068191] &lt;6&gt; s5p_hpd_get_state [ 2.072152] s5p-tvout s5p-tvout: hpd status is cable removed [ 2.077964] &lt;6&gt; s5p_tv_if_init_param [ 2.082293] &lt;6&gt; s5ptvfb_set_lcd_info [ 2.086796] &lt;6&gt; s5ptvfb_alloc_framebuffer [ 2.091825] &lt;6&gt; s5ptvfb_init_fbinfo [ 2.096239] &lt;6&gt; s5ptvfb_set_bitfield [ 2.100747] &lt;6&gt; s5ptvfb_set_alpha_info [ 2.105424] &lt;6&gt; s5ptvfb_register_framebuffer [ 2.116337] &lt;6&gt; s5p_tv_base_clk_gate [ 2.119670] DBUG_PORT must not use AFC! [ 13.997353] s5p_vlayer_stop::s5p_vp_stop() fail </code></pre> <p>So <strong>s5p_vlayer_stop::<a href="https://dev.openwrt.org.cn/browser/backfire/target/linux/s5pv210/files-2.6.35/drivers/media/video/samsung/tv20/s5pv210/vprocessor_s5pv210.c?rev=427#L695" rel="nofollow">s5p_vp_stop()</a></strong> fails, which would obviously have stopped calling other methods responsible for making tv out initialize/work properly. But i am not a driver expert and can't figure-out/backtrack all the function calls, if any1 of u has the experience and can help out to prevent s5p_vp_stop() to fail ?</p> <p>Thanks !</p> <p>Regards</p> <p>Usama</p>
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    1. COWe get the Android Kernel source from Embest(manufacturer of Dev Kit 7000). "modinfo s5p-tvout" gives error when entered in adb shell. modinfo s5p-tvout modinfo : not found. And ls /sys/class/graphics returns fb0,fb1,fb2,fb3,fb4,fb5. each of these fb* have different parameters such as name, mode, state, etc
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    2. COTV-Out is set saying 'NO SIGNAL'. And i can't find the module in /sys/module :/. Please see the updated question (can't paste the output here)
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