dri-devel April 2022

dri-devel@lists.freedesktop.org

351 participants
951 discussions

[RFC PATCH] drm/edid: drm_add_modes_noedid() should set lowest resolution as preferred
by Douglas Anderson 11 May '22

11 May '22

If we're unable to read the EDID for a display because it's corrupt / bogus / invalid then we'll add a set of standard modes for the display. When userspace looks at these modes it doesn't really have a good concept for which mode to pick and it'll likely pick the highest resolution one by default. That's probably not ideal because the modes were purely guesses on the part of the Linux kernel. Let's instead set 640x480 as the "preferred" mode when we have no EDID. Signed-off-by: Douglas … [View More]

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[PATCH] drm/bridge: simplify the return expression of ps8640_bridge_host_attach
by cgel.zte＠gmail.com 10 May '22

10 May '22

From: Minghao Chi <chi.minghao(a)zte.com.cn> Simplify the return expression. Reported-by: Zeal Robot <zealci(a)zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao(a)zte.com.cn> --- drivers/gpu/drm/bridge/parade-ps8640.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c index edb939b14c04..e2467e58b5b7 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/… [View More]

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5.18 vmwgfx seems to break booting VirtualBox VMs
by Hans de Goede 10 May '22

10 May '22

Hi All, Fedora has received a bug report here: https://bugzilla.redhat.com/show_bug.cgi?id=2072556 That Fedora rawhide VMs no longer boot under the VirtualBox hypervisor after the VM has been updated to a 5.18-rc# kernel. Switching the emulated GPU from vmwaregfx to VirtualBoxSVGA fixes this, so this seems to be a vmwgfx driver regression. Note I've not investigated/reproduced this myself due to -ENOTIME. Regards, Hans

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[PATCH] drm/stm: dsi: Enable wrapper glue regulator early
by Marek Vasut 10 May '22

10 May '22

Certain DSI bridge chips like TC358767/TC358867/TC9595 expect the DSI D0 data lane to be in LP-11 state when released from reset. Currently the STM32MP157 DSI host wrapper glue logic keeps D0 data lane in LP-00 state until DSI init happens, which confuses the TC358767 into entering some sort of test mode and the chip cannot be brought out of this test mode in any way. Enable the wrapper glue logic regulator in probe callback already and disable it in remove callback to satisfy this requirement.… [View More] The D0 data lane is in LP-11 mode when the TC358767 bridge chip is brought up and the chip is not confused anymore. Signed-off-by: Marek Vasut <marex(a)denx.de> Cc: Alexandre Torgue <alexandre.torgue(a)foss.st.com> Cc: Antonio Borneo <antonio.borneo(a)foss.st.com> Cc: Philippe Cornu <philippe.cornu(a)foss.st.com> Cc: Raphael Gallais-Pou <raphael.gallais-pou(a)foss.st.com> Cc: Robert Foss <robert.foss(a)linaro.org> Cc: Yannick Fertre <yannick.fertre(a)foss.st.com> --- drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 30 +++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index 89897d5f5c72..c403633ffeae 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -194,16 +194,29 @@ static int dsi_pll_get_params(struct dw_mipi_dsi_stm *dsi, return 0; } +static int dw_mipi_dsi_phy_regulator_on(struct dw_mipi_dsi_stm *dsi) +{ + u32 val; + + /* Enable the regulator */ + dsi_set(dsi, DSI_WRPCR, WRPCR_REGEN | WRPCR_BGREN); + return readl_poll_timeout(dsi->base + DSI_WISR, val, val & WISR_RRS, + SLEEP_US, TIMEOUT_US); +} + +static void dw_mipi_dsi_phy_regulator_off(struct dw_mipi_dsi_stm *dsi) +{ + /* Disable the regulator */ + dsi_clear(dsi, DSI_WRPCR, WRPCR_REGEN | WRPCR_BGREN); +} + static int dw_mipi_dsi_phy_init(void *priv_data) { struct dw_mipi_dsi_stm *dsi = priv_data; u32 val; int ret; - /* Enable the regulator */ - dsi_set(dsi, DSI_WRPCR, WRPCR_REGEN | WRPCR_BGREN); - ret = readl_poll_timeout(dsi->base + DSI_WISR, val, val & WISR_RRS, - SLEEP_US, TIMEOUT_US); + ret = dw_mipi_dsi_phy_regulator_on(dsi); if (ret) DRM_DEBUG_DRIVER("!TIMEOUT! waiting REGU, let's continue\n"); @@ -499,8 +512,16 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) } dsi->hw_version = dsi_read(dsi, DSI_VERSION) & VERSION; + + ret = dw_mipi_dsi_phy_regulator_on(dsi); clk_disable_unprepare(pclk); + if (ret) { + DRM_ERROR("%s: Failed to enable wrapper regulator, ret=%d\n", + __func__, ret); + goto err_dsi_probe; + } + if (dsi->hw_version != HWVER_130 && dsi->hw_version != HWVER_131) { ret = -ENODEV; DRM_ERROR("bad dsi hardware version\n"); @@ -542,6 +563,7 @@ static int dw_mipi_dsi_stm_remove(struct platform_device *pdev) struct dw_mipi_dsi_stm *dsi = platform_get_drvdata(pdev); dw_mipi_dsi_remove(dsi->dsi); + dw_mipi_dsi_phy_regulator_off(dsi); clk_disable_unprepare(dsi->pllref_clk); regulator_disable(dsi->vdd_supply); -- 2.35.1 [View Less]

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[RFC v2 0/2] drm/doc/rfc: i915 VM_BIND feature design + uapi
by Niranjana Vishwanathapura 09 May '22

09 May '22

This is the i915 driver VM_BIND feature design RFC patch series along with the required uapi definition and description of intended use cases. v2: Updated design and uapi, more documentation. Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura(a)intel.com> Niranjana Vishwanathapura (2): drm/doc/rfc: VM_BIND feature design document drm/doc/rfc: VM_BIND uapi definition Documentation/gpu/rfc/i915_vm_bind.h | 176 +++++++++++++++++++++ Documentation/gpu/rfc/… [View More]

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[PATCH v3 0/5] drm: Provide framebuffer vmap helpers
by Thomas Zimmermann 09 May '22

09 May '22

Add the new helpers drm_gem_fb_vmap() and drm_gem_fb_vunmap(), which provide vmap/vunmap for all BOs of a framebuffer. Convert shadow- plane helpers, gud and vkms. Callers of GEM vmap and vunmap functions used to do the minimum work or get some detail wrong. Therefore shadow-plane helpers were intro- duced to implement the details for all callers. The vmapping code in the shadow-plane helpers is also useful for gud and vkms. So it makes sense to provide rsp helpers. Simply call drm_gem_fb_vmap(… [View More]

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RX 5500 XT: PCIe link speed stuck at Gen1 2.5GT/s by default
by Bjorn Helgaas 09 May '22

09 May '22

See https://gitlab.freedesktop.org/drm/amd/-/issues/1447 This report was against DRM, but I'm mentioning it here because we've been talking about some link speed init issues lately, and AFAICT the gitlab reports don't show up anywhere in lore. Robert Hancock reported: > I'm using a RX 5500 XT card on an Asus PRIME H270-PRO motherboard, > Intel i5-7500 CPU, with kernel 5.10.9 under Fedora 33. I noticed > that in Linux, "lspci -vv" always showed the GPU PCIe link running > at 2.5GT/… [View More]

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[PATCH v5 0/2] Let userspace know when snd-hda-intel needs i915
by Mauro Carvalho Chehab 09 May '22

09 May '22

Currently, kernel/module annotates module dependencies when request_symbol is used, but it doesn't cover more complex inter-driver dependencies that are subsystem and/or driver-specific. In the case of hdmi sound, depending on the CPU/GPU, sometimes the snd_hda_driver can talk directly with the hardware, but sometimes, it uses the i915 driver. When the snd_hda_driver uses i915, it should first be unbind/rmmod, as otherwise trying to unbind/rmmod the i915 driver cause driver issues, as as … [View More]reported by CI tools with different GPU models: https://intel-gfx-ci.01.org/tree/drm-tip/IGT_6415/fi-tgl-1115g4/igt@core_ho… https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11495/bat-adlm-1/igt@i915_m… In the past, just a few CPUs were doing such bindings, but this issue now applies to all "modern" Intel CPUs that have onboard graphics, as well as to the newer discrete GPUs. With the discrete GPU case, the HDA controller is physically separate and requires i915 to power on the hardware for all hardware access. In this case, the issue is hit basicly 100% of the time. With on-board graphics, i915 driver is needed only when the display codec is accessed. If i915 is unbind during runtime suspend, while snd-hda-intel is still bound, nothing bad happens, but unbinding i915 on other situations may also cause issues. So, add support at kernel/modules to allow snd-hda drivers to properly annotate when a dependency on a DRM driver dependencies exists, and add a call to such new function at the snd-hda driver when it successfully binds into the DRM driver. This would allow userspace tools to check and properly remove the audio driver before trying to remove or unbind the GPU driver. It should be noticed that this series conveys the hidden module dependencies. Other changes are needed in order to allow removing or unbinding the i915 driver while keeping the snd-hda-intel driver loaded/bound. With that regards, there are some discussions on how to improve this at alsa-devel a while back: https://mailman.alsa-project.org/pipermail/alsa-devel/2021-September/190099… So, future improvements on both in i915 and the audio drivers could be made. E.g. with discrete GPUs, it's the only codec of the card, so it seems feasible to detach the ALSA card if i915 is bound (using infra made for VGA switcheroo), but, until these improvements are done and land in upstream, audio drivers needs to be unbound if i915 driver goes unbind. Yet, even if such fixes got merged, this series is still needed, as it makes such dependencies more explicit and easier to debug. PS.: This series was generated against next-20220428. --- v5: - while v4 works fine, it ends calling try_module_format() recursively, which is not what it it was supposed to do. So, change the logic to avoid such recursion, by adding a static __try_module_format() and renaming the new version that takes two arguments as try_module_format_owner(). v4: - fix a compilation warning reported by Intel's Kernel robot when !CONFIG_MODULE_UNLOAD or !CONFIG_MODULE. v3: minor fixes: - fixed a checkpatch warning; - use a single line for the new function prototype. v2: - the dependencies are now handled directly at try_module_get(). Mauro Carvalho Chehab (2): module: update dependencies at try_module_get() ALSA: hda - identify when audio is provided by a video driver include/linux/module.h | 8 +++-- kernel/module/main.c | 65 ++++++++++++++++++++++++++++++-------- sound/hda/hdac_component.c | 2 +- 3 files changed, 57 insertions(+), 18 deletions(-) -- 2.35.1 [View Less]

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[PATCH 5.10 1/1] drm/amdgpu: Ensure the AMDGPU file descriptor is legitimate
by Lee Jones 09 May '22

09 May '22

[ Upstream commit b40a6ab2cf9213923bf8e821ce7fa7f6a0a26990 ] This is a partial cherry-pick of the above upstream commit. It ensures the file descriptor passed in by userspace is a valid one. Cc: Felix Kuehling <Felix.Kuehling(a)amd.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: amd-gfx(a)lists.freedesktop.org Cc: dri-devel(a)… [View More]

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[PATCH 1/2] [RFC] regmap: Add bulk read/write callbacks into regmap_config
by Marek Vasut 09 May '22

09 May '22

Currently the regmap_config structure only allows the user to implement single element register read/write using .reg_read/.reg_write callbacks. The regmap_bus already implements bulk counterparts of both, and is being misused as a workaround for the missing bulk read/write callbacks in regmap_config by a couple of drivers. To stop this misuse, add the bulk read/write callbacks to regmap_config and call them from the regmap core code. Signed-off-by: Marek Vasut <marex(a)denx.de> Cc: … [View More]Jagan Teki <jagan(a)amarulasolutions.com> Cc: Mark Brown <broonie(a)kernel.org> Cc: Maxime Ripard <maxime(a)cerno.tech> Cc: Robert Foss <robert.foss(a)linaro.org> Cc: Sam Ravnborg <sam(a)ravnborg.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> To: dri-devel(a)lists.freedesktop.org --- drivers/base/regmap/internal.h | 4 ++ drivers/base/regmap/regmap.c | 76 ++++++++++++++++++---------------- include/linux/regmap.h | 12 ++++++ 3 files changed, 56 insertions(+), 36 deletions(-) diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index b4df36c7b17d..da8996e7a1f1 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -110,6 +110,10 @@ struct regmap { int (*reg_write)(void *context, unsigned int reg, unsigned int val); int (*reg_update_bits)(void *context, unsigned int reg, unsigned int mask, unsigned int val); + /* Bulk read/write */ + int (*read)(void *context, const void *reg_buf, size_t reg_size, + void *val_buf, size_t val_size); + int (*write)(void *context, const void *data, size_t count); bool defer_caching; diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 5e12f7cb5147..879a87a6461b 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -838,12 +838,15 @@ struct regmap *__regmap_init(struct device *dev, map->reg_stride_order = ilog2(map->reg_stride); else map->reg_stride_order = -1; - map->use_single_read = config->use_single_read || !bus || !bus->read; - map->use_single_write = config->use_single_write || !bus || !bus->write; - map->can_multi_write = config->can_multi_write && bus && bus->write; + map->use_single_read = config->use_single_read || !(config->read || (bus && bus->read)); + map->use_single_write = config->use_single_write || !(config->write || (bus && bus->write)); + map->can_multi_write = config->can_multi_write && (config->write || (bus && bus->write)); if (bus) { map->max_raw_read = bus->max_raw_read; map->max_raw_write = bus->max_raw_write; + } else if (config->max_raw_read && config->max_raw_write) { + map->max_raw_read = config->max_raw_read; + map->max_raw_write = config->max_raw_write; } map->dev = dev; map->bus = bus; @@ -877,7 +880,16 @@ struct regmap *__regmap_init(struct device *dev, map->read_flag_mask = bus->read_flag_mask; } - if (!bus) { + if (config && config->read && config->write) { + map->reg_read = _regmap_bus_read; + + /* Bulk read/write */ + map->read = config->read; + map->write = config->write; + + reg_endian = REGMAP_ENDIAN_NATIVE; + val_endian = REGMAP_ENDIAN_NATIVE; + } else if (!bus) { map->reg_read = config->reg_read; map->reg_write = config->reg_write; map->reg_update_bits = config->reg_update_bits; @@ -894,10 +906,13 @@ struct regmap *__regmap_init(struct device *dev, } else { map->reg_read = _regmap_bus_read; map->reg_update_bits = bus->reg_update_bits; - } + /* Bulk read/write */ + map->read = bus->read; + map->write = bus->write; - reg_endian = regmap_get_reg_endian(bus, config); - val_endian = regmap_get_val_endian(dev, bus, config); + reg_endian = regmap_get_reg_endian(bus, config); + val_endian = regmap_get_val_endian(dev, bus, config); + } switch (config->reg_bits + map->reg_shift) { case 2: @@ -1671,8 +1686,6 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg, size_t len; int i; - WARN_ON(!map->bus); - /* Check for unwritable or noinc registers in range * before we start */ @@ -1754,7 +1767,7 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg, val = work_val; } - if (map->async && map->bus->async_write) { + if (map->async && map->bus && map->bus->async_write) { struct regmap_async *async; trace_regmap_async_write_start(map, reg, val_len); @@ -1822,10 +1835,10 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg, * write. */ if (val == work_val) - ret = map->bus->write(map->bus_context, map->work_buf, - map->format.reg_bytes + - map->format.pad_bytes + - val_len); + ret = map->write(map->bus_context, map->work_buf, + map->format.reg_bytes + + map->format.pad_bytes + + val_len); else if (map->bus->gather_write) ret = map->bus->gather_write(map->bus_context, map->work_buf, map->format.reg_bytes + @@ -1844,7 +1857,7 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg, memcpy(buf, map->work_buf, map->format.reg_bytes); memcpy(buf + map->format.reg_bytes + map->format.pad_bytes, val, val_len); - ret = map->bus->write(map->bus_context, buf, len); + ret = map->write(map->bus_context, buf, len); kfree(buf); } else if (ret != 0 && !map->cache_bypass && map->format.parse_val) { @@ -1901,7 +1914,7 @@ static int _regmap_bus_formatted_write(void *context, unsigned int reg, struct regmap_range_node *range; struct regmap *map = context; - WARN_ON(!map->bus || !map->format.format_write); + WARN_ON(!map->format.format_write); range = _regmap_range_lookup(map, reg); if (range) { @@ -1916,8 +1929,7 @@ static int _regmap_bus_formatted_write(void *context, unsigned int reg, trace_regmap_hw_write_start(map, reg, 1); - ret = map->bus->write(map->bus_context, map->work_buf, - map->format.buf_size); + ret = map->write(map->bus_context, map->work_buf, map->format.buf_size); trace_regmap_hw_write_done(map, reg, 1); @@ -1937,7 +1949,7 @@ static int _regmap_bus_raw_write(void *context, unsigned int reg, { struct regmap *map = context; - WARN_ON(!map->bus || !map->format.format_val); + WARN_ON(!map->format.format_val); map->format.format_val(map->work_buf + map->format.reg_bytes + map->format.pad_bytes, val, 0); @@ -1951,7 +1963,7 @@ static int _regmap_bus_raw_write(void *context, unsigned int reg, static inline void *_regmap_map_get_context(struct regmap *map) { - return (map->bus) ? map : map->bus_context; + return (map->bus || (!map->bus && map->read)) ? map : map->bus_context; } int _regmap_write(struct regmap *map, unsigned int reg, @@ -2363,7 +2375,7 @@ static int _regmap_raw_multi_reg_write(struct regmap *map, u8 = buf; *u8 |= map->write_flag_mask; - ret = map->bus->write(map->bus_context, buf, len); + ret = map->write(map->bus_context, buf, len); kfree(buf); @@ -2669,9 +2681,7 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val, struct regmap_range_node *range; int ret; - WARN_ON(!map->bus); - - if (!map->bus || !map->bus->read) + if (!map->read) return -EINVAL; range = _regmap_range_lookup(map, reg); @@ -2689,9 +2699,9 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val, map->read_flag_mask); trace_regmap_hw_read_start(map, reg, val_len / map->format.val_bytes); - ret = map->bus->read(map->bus_context, map->work_buf, - map->format.reg_bytes + map->format.pad_bytes, - val, val_len); + ret = map->read(map->bus_context, map->work_buf, + map->format.reg_bytes + map->format.pad_bytes, + val, val_len); trace_regmap_hw_read_done(map, reg, val_len / map->format.val_bytes); @@ -2802,8 +2812,6 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val, unsigned int v; int ret, i; - if (!map->bus) - return -EINVAL; if (val_len % map->format.val_bytes) return -EINVAL; if (!IS_ALIGNED(reg, map->reg_stride)) @@ -2818,7 +2826,7 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val, size_t chunk_count, chunk_bytes; size_t chunk_regs = val_count; - if (!map->bus->read) { + if (!map->read) { ret = -ENOTSUPP; goto out; } @@ -2878,7 +2886,7 @@ EXPORT_SYMBOL_GPL(regmap_raw_read); * @val: Pointer to data buffer * @val_len: Length of output buffer in bytes. * - * The regmap API usually assumes that bulk bus read operations will read a + * The regmap API usually assumes that bulk read operations will read a * range of registers. Some devices have certain registers for which a read * operation read will read from an internal FIFO. * @@ -2896,10 +2904,6 @@ int regmap_noinc_read(struct regmap *map, unsigned int reg, size_t read_len; int ret; - if (!map->bus) - return -EINVAL; - if (!map->bus->read) - return -ENOTSUPP; if (val_len % map->format.val_bytes) return -EINVAL; if (!IS_ALIGNED(reg, map->reg_stride)) @@ -3013,7 +3017,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, if (val_count == 0) return -EINVAL; - if (map->bus && map->format.parse_inplace && (vol || map->cache_type == REGCACHE_NONE)) { + if (map->format.parse_inplace && (vol || map->cache_type == REGCACHE_NONE)) { ret = regmap_raw_read(map, reg, val, val_bytes * val_count); if (ret != 0) return ret; diff --git a/include/linux/regmap.h b/include/linux/regmap.h index de81a94d7b30..8952fa3d0d59 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -299,6 +299,12 @@ typedef void (*regmap_unlock)(void *); * if the function require special handling with lock and reg * handling and the operation cannot be represented as a simple * update_bits operation on a bus such as SPI, I2C, etc. + * @read: Optional callback that if filled will be used to perform all the + * bulk reads from the registers. Data is returned in the buffer used + * to transmit data. + * @write: Same as above for writing. + * @max_raw_read: Max raw read size that can be used on the device. + * @max_raw_write: Max raw write size that can be used on the device. * @fast_io: Register IO is fast. Use a spinlock instead of a mutex * to perform locking. This field is ignored if custom lock/unlock * functions are used (see fields lock/unlock of struct regmap_config). @@ -385,6 +391,12 @@ struct regmap_config { int (*reg_write)(void *context, unsigned int reg, unsigned int val); int (*reg_update_bits)(void *context, unsigned int reg, unsigned int mask, unsigned int val); + /* Bulk read/write */ + int (*read)(void *context, const void *reg_buf, size_t reg_size, + void *val_buf, size_t val_size); + int (*write)(void *context, const void *data, size_t count); + size_t max_raw_read; + size_t max_raw_write; bool fast_io; -- 2.35.1 [View Less]

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dri-devel April 2022