linux-dev/drivers/media/platform/mtk-mdp, branch master

media: platform: rename mtk-mdp/ to mediatek/mtk-mdp/

2022-03-18T04:56:51Z

As the end goal is to have platform drivers split by vendor, rename mtk-mdp/ to mediatek/mtk-mdp/. Signed-off-by: Mauro Carvalho Chehab

media: platform: mtk-mdp: move config to its own file

2022-03-15T05:45:39Z

In order to better organize the platform/Kconfig, place mtk-mdp-specific config stuff on a separate Kconfig file. Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: Remove redundant 'flush_workqueue()' calls

2022-03-07T10:05:41Z

'destroy_workqueue()' already drains the queue before destroying it, so there is no need to flush it explicitly. Remove the redundant 'flush_workqueue()' calls. Signed-off-by: Xu Wang Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: Get rid of mtk_smi_larb_get/put

2022-01-28T14:30:21Z

MediaTek IOMMU has already added the device_link between the consumer and smi-larb device. If the mdp device calls the pm_runtime_get_sync, the smi-larb's pm_runtime_get_sync also be called automatically. CC: Minghsiu Tsai Signed-off-by: Yong Wu Reviewed-by: Evan Green Reviewed-by: Houlong Wei Reviewed-by: Dafna Hirschfeld Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: address a clang warning

2021-11-29T12:23:25Z

The typecasts at the dvb-core generate clang warnings when W=1 is enabled. Such warning is harmless, but it causes the build to break with CONFIG_WERROR and W=1 with clang, so do the cast on a way that it won't produce warnings anymore. Reviewed-by: Arnd Bergmann Signed-off-by: Mauro Carvalho Chehab

media: mdk-mdp: fix pm_runtime_get_sync() usage count

2021-05-10T09:36:33Z

The pm_runtime_get_sync() internally increments the dev->power.usage_count without decrementing it, even on errors. Replace it by the new pm_runtime_resume_and_get(), introduced by: commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") in order to properly decrement the usage counter, avoiding a potential PM usage counter leak. While here, fix the return contition of mtk_mdp_m2m_start_streaming(), as it doesn't make any sense to return 0 if the PM runtime failed to resume. Reviewed-by: Jonathan Cameron Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: fix kernel-doc warnings

2021-03-22T11:57:26Z

mtk_mdp_comp.h: MTK_MDP_COMP_TYPE_MAX was undocumented, but it is also unused, so just remove it. mtk_mdp_core.h: add missing '*' inside comment blocks, add a missing : after '@ctrls' and add a missing struct keyword. Signed-off-by: Hans Verkuil Cc: Eizan Miyamoto Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: Do not zero reserved fields

2021-01-27T12:18:29Z

Core code already clears reserved fields of struct v4l2_pix_format_mplane, check commit 4e1e0eb0e074 ("media: v4l2-ioctl: Zero v4l2_plane_pix_format reserved fields"). Cc: Matthias Brugger Signed-off-by: Ricardo Ribalda Reviewed-by: Kieran Bingham Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: Fix Null pointer dereference when calling list_add

2020-09-26T08:23:48Z

In list_add, the first variable is the new node and the second is the list head. The function is called with a wrong order causing NULL dereference: [ 15.527030] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 [ 15.542317] Mem abort info: [ 15.545152] ESR = 0x96000044 [ 15.548248] EC = 0x25: DABT (current EL), IL = 32 bits [ 15.553624] SET = 0, FnV = 0 [ 15.556715] EA = 0, S1PTW = 0 [ 15.559892] Data abort info: [ 15.562799] ISV = 0, ISS = 0x00000044 [ 15.566678] CM = 0, WnR = 1 [ 15.569683] user pgtable: 4k pages, 48-bit VAs, pgdp=00000001373f0000 [ 15.576196] [0000000000000008] pgd=0000000000000000, p4d=0000000000000000 [ 15.583101] Internal error: Oops: 96000044 [#1] PREEMPT SMP [ 15.588747] Modules linked in: mtk_mdp(+) cfg80211 v4l2_mem2mem videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common vide odev mt8173_rt5650 smsc95xx usbnet ecdh_generic ecc snd_soc_rt5645 mc mt8173_afe_pcm rfkill cros_ec_sensors snd_soc_mtk_common elan_i2c crct10dif_ce cros_ec_se nsors_core snd_soc_rl6231 elants_i2c industrialio_triggered_buffer kfifo_buf mtk_vpu cros_ec_chardev cros_usbpd_charger cros_usbpd_logger sbs_battery display_c onnector pwm_bl ip_tables x_tables ipv6 [ 15.634295] CPU: 0 PID: 188 Comm: systemd-udevd Not tainted 5.9.0-rc2+ #69 [ 15.641242] Hardware name: Google Elm (DT) [ 15.645381] pstate: 20000005 (nzCv daif -PAN -UAO BTYPE=--) [ 15.651022] pc : mtk_mdp_probe+0x134/0x3a8 [mtk_mdp] [ 15.656041] lr : mtk_mdp_probe+0x128/0x3a8 [mtk_mdp] [ 15.661055] sp : ffff80001255b910 [ 15.669548] x29: ffff80001255b910 x28: 0000000000000000 [ 15.679973] x27: ffff800009089bf8 x26: ffff0000fafde800 [ 15.690347] x25: ffff0000ff7d2768 x24: ffff800009089010 [ 15.700670] x23: ffff0000f01a7cd8 x22: ffff0000fafde810 [ 15.710940] x21: ffff0000f01a7c80 x20: ffff0000f0c3c180 [ 15.721148] x19: ffff0000ff7f1618 x18: 0000000000000010 [ 15.731289] x17: 0000000000000000 x16: 0000000000000000 [ 15.741375] x15: 0000000000aaaaaa x14: 0000000000000020 [ 15.751399] x13: 00000000ffffffff x12: 0000000000000020 [ 15.761363] x11: 0000000000000028 x10: 0101010101010101 [ 15.771279] x9 : 0000000000000004 x8 : 7f7f7f7f7f7f7f7f [ 15.781148] x7 : 646bff6171606b2b x6 : 0000000000806d65 [ 15.790981] x5 : ffff0000ff7f8360 x4 : 0000000000000000 [ 15.800767] x3 : 0000000000000004 x2 : 0000000000000001 [ 15.810501] x1 : 0000000000000005 x0 : 0000000000000000 [ 15.820171] Call trace: [ 15.826944] mtk_mdp_probe+0x134/0x3a8 [mtk_mdp] [ 15.835908] platform_drv_probe+0x54/0xa8 [ 15.844247] really_probe+0xe4/0x3b0 [ 15.852104] driver_probe_device+0x58/0xb8 [ 15.860457] device_driver_attach+0x74/0x80 [ 15.868854] __driver_attach+0x58/0xe0 [ 15.876770] bus_for_each_dev+0x70/0xc0 [ 15.884726] driver_attach+0x24/0x30 [ 15.892374] bus_add_driver+0x14c/0x1f0 [ 15.900295] driver_register+0x64/0x120 [ 15.908168] __platform_driver_register+0x48/0x58 [ 15.916864] mtk_mdp_driver_init+0x20/0x1000 [mtk_mdp] [ 15.925943] do_one_initcall+0x54/0x1b4 [ 15.933662] do_init_module+0x54/0x200 [ 15.941246] load_module+0x1cf8/0x22d0 [ 15.948798] __do_sys_finit_module+0xd8/0xf0 [ 15.956829] __arm64_sys_finit_module+0x20/0x30 [ 15.965082] el0_svc_common.constprop.0+0x6c/0x168 [ 15.973527] do_el0_svc+0x24/0x90 [ 15.980403] el0_sync_handler+0x90/0x198 [ 15.987867] el0_sync+0x158/0x180 [ 15.994653] Code: 9400014b 2a0003fc 35000920 f9400280 (f9000417) [ 16.004299] ---[ end trace 76fee0203f9898e5 ]--- Fixes: 86698b9505bbc ("media: mtk-mdp: convert mtk_mdp_dev.comp array to list") Signed-off-by: Dafna Hirschfeld Reviewed-by: Matthias Brugger Tested-by: Enric Balletbo i Serra Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mtk-mdp: Fix a refcounting bug on error in init

2020-08-06T09:27:45Z

We need to call of_node_put(comp->dev_node); on the error paths in this function. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Signed-off-by: Dan Carpenter Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab