dri-devel October 2021

dri-devel@lists.freedesktop.org

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825 discussions

[PATCH v4 0/5] drm/msm/dp: Support multiple DP instances and add sc8180x
by Bjorn Andersson 07 Oct '21

07 Oct '21

The current implementation supports a single DP instance and the DPU code will only match it against INTF_DP instance 0. These patches extends this to allow multiple DP instances and support for matching against DP instances beyond 0. With that in place add SC8180x DP and eDP controllers. Bjorn Andersson (7): drm/msm/dp: Remove global g_dp_display variable drm/msm/dp: Modify prototype of encoder based API drm/msm/dp: Allow specifying connector_type per controller drm/msm/dp: Allow attaching a drm_panel drm/msm/dp: Support up to 3 DP controllers dt-bindings: msm/dp: Add SC8180x compatibles drm/msm/dp: Add sc8180x DP controllers .../bindings/display/msm/dp-controller.yaml | 2 + drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 23 +-- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 66 ++++---- .../gpu/drm/msm/disp/msm_disp_snapshot_util.c | 8 +- drivers/gpu/drm/msm/dp/dp_display.c | 153 ++++++++++-------- drivers/gpu/drm/msm/dp/dp_display.h | 2 + drivers/gpu/drm/msm/dp/dp_drm.c | 13 +- drivers/gpu/drm/msm/dp/dp_parser.c | 30 +++- drivers/gpu/drm/msm/dp/dp_parser.h | 3 +- drivers/gpu/drm/msm/msm_drv.h | 2 +- 10 files changed, 194 insertions(+), 108 deletions(-) -- 2.29.2

4 31

[PATCH v2 00/13] backlight: qcom-wled: fix and solidify handling of enabled-strings
by Marijn Suijten 07 Oct '21

07 Oct '21

This patchset fixes WLED's handling of enabled-strings: besides some cleanup it is now actually possible to specify a non-contiguous array of enabled strings (not necessarily starting at zero) and the values from DT are now validated to prevent possible unexpected out-of-bounds register and array element accesses. Off-by-one mistakes in the maximum number of strings, also causing out-of-bounds access, have been addressed as well. Changes in v2: - Reordered patch 4/10 (Validate enabled string indices in DT) to sit before patch 1/10 (Pass number of elements to read to read_u32_array); - Pulled qcom,num-strings out of the DT enumeration parser, and moved it after qcom,enabled-strings parser to always have final sign-off over the number of strings; - Extra validation for this number of strings against qcom,enabled-strings; - Recombined patch 9 (Consistently use enabled-strings in set_brightness) and patch 10 (Consider enabled_strings in autodetection), which both solve the same problem in two different functions. In addition the autodetection code uses set_brightness as helper already; - Improved DT configurations for pmi8994 and pm660l, currently in 5.15 rc's. v1: https://lore.kernel.org/dri-devel/20211004192741.621870-1-marijn.suijten@so… Marijn Suijten (13): backlight: qcom-wled: Validate enabled string indices in DT backlight: qcom-wled: Pass number of elements to read to read_u32_array backlight: qcom-wled: Use cpu_to_le16 macro to perform conversion backlight: qcom-wled: Fix off-by-one maximum with default num_strings backlight: qcom-wled: Override default length with qcom,enabled-strings backlight: qcom-wled: Remove unnecessary 4th default string in WLED3 backlight: qcom-wled: Provide enabled_strings default for WLED 4 and 5 backlight: qcom-wled: Remove unnecessary double whitespace backlight: qcom-wled: Respect enabled-strings in set_brightness arm64: dts: qcom: pmi8994: Fix "eternal"->"external" typo in WLED node arm64: dts: qcom: pmi8994: Remove hardcoded linear WLED enabled-strings arm64: dts: qcom: Move WLED num-strings from pmi8994 to sony-xperia-tone arm64: dt: qcom: pm660l: Remove board-specific WLED configuration .../dts/qcom/msm8996-sony-xperia-tone.dtsi | 1 + arch/arm64/boot/dts/qcom/pm660l.dtsi | 7 - arch/arm64/boot/dts/qcom/pmi8994.dtsi | 5 +- drivers/video/backlight/qcom-wled.c | 131 ++++++++++-------- 4 files changed, 73 insertions(+), 71 deletions(-) -- 2.33.0

1 9

[PATCH 00/10] backlight: qcom-wled: fix and solidify handling of enabled-strings
by Marijn Suijten 07 Oct '21

07 Oct '21

3 33

[PATCH v2] drm/msm/dp: Simplify the dp_debug debugfs show function
by Bjorn Andersson 07 Oct '21

07 Oct '21

The "dp_debug" show function allocates a buffer and piecemeal appends line by line, checking for buffer overflows etc. Migrate the function to seq_file, to remove all the extra book keeping and simplify the function. Reviewed-by: Stephen Boyd <swboyd(a)chromium.org> Signed-off-by: Bjorn Andersson <bjorn.andersson(a)linaro.org> --- Changes since v1: - const drm_mode drivers/gpu/drm/msm/dp/dp_debug.c | 163 +++++------------------------- 1 file changed, 25 insertions(+), 138 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c index 2f6247e80e9d..af709d93bb9f 100644 --- a/drivers/gpu/drm/msm/dp/dp_debug.c +++ b/drivers/gpu/drm/msm/dp/dp_debug.c @@ -31,177 +31,69 @@ struct dp_debug_private { struct dp_debug dp_debug; }; -static int dp_debug_check_buffer_overflow(int rc, int *max_size, int *len) +static int dp_debug_show(struct seq_file *seq, void *p) { - if (rc >= *max_size) { - DRM_ERROR("buffer overflow\n"); - return -EINVAL; - } - *len += rc; - *max_size = SZ_4K - *len; - - return 0; -} - -static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff, - size_t count, loff_t *ppos) -{ - struct dp_debug_private *debug = file->private_data; - char *buf; - u32 len = 0, rc = 0; + struct dp_debug_private *debug = seq->private; u64 lclk = 0; - u32 max_size = SZ_4K; u32 link_params_rate; - struct drm_display_mode *drm_mode; + const struct drm_display_mode *drm_mode; if (!debug) return -ENODEV; - if (*ppos) - return 0; - - buf = kzalloc(SZ_4K, GFP_KERNEL); - if (!buf) - return -ENOMEM; - drm_mode = &debug->panel->dp_mode.drm_mode; - rc = snprintf(buf + len, max_size, "\tname = %s\n", DEBUG_NAME); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdp_panel\n\t\tmax_pclk_khz = %d\n", + seq_printf(seq, "\tname = %s\n", DEBUG_NAME); + seq_printf(seq, "\tdp_panel\n\t\tmax_pclk_khz = %d\n", debug->panel->max_pclk_khz); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdrm_dp_link\n\t\trate = %u\n", + seq_printf(seq, "\tdrm_dp_link\n\t\trate = %u\n", debug->panel->link_info.rate); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tnum_lanes = %u\n", + seq_printf(seq, "\t\tnum_lanes = %u\n", debug->panel->link_info.num_lanes); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tcapabilities = %lu\n", + seq_printf(seq, "\t\tcapabilities = %lu\n", debug->panel->link_info.capabilities); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdp_panel_info:\n\t\tactive = %dx%d\n", + seq_printf(seq, "\tdp_panel_info:\n\t\tactive = %dx%d\n", drm_mode->hdisplay, drm_mode->vdisplay); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tback_porch = %dx%d\n", + seq_printf(seq, "\t\tback_porch = %dx%d\n", drm_mode->htotal - drm_mode->hsync_end, drm_mode->vtotal - drm_mode->vsync_end); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tfront_porch = %dx%d\n", + seq_printf(seq, "\t\tfront_porch = %dx%d\n", drm_mode->hsync_start - drm_mode->hdisplay, drm_mode->vsync_start - drm_mode->vdisplay); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tsync_width = %dx%d\n", + seq_printf(seq, "\t\tsync_width = %dx%d\n", drm_mode->hsync_end - drm_mode->hsync_start, drm_mode->vsync_end - drm_mode->vsync_start); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tactive_low = %dx%d\n", + seq_printf(seq, "\t\tactive_low = %dx%d\n", debug->panel->dp_mode.h_active_low, debug->panel->dp_mode.v_active_low); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\th_skew = %d\n", + seq_printf(seq, "\t\th_skew = %d\n", drm_mode->hskew); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\trefresh rate = %d\n", + seq_printf(seq, "\t\trefresh rate = %d\n", drm_mode_vrefresh(drm_mode)); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tpixel clock khz = %d\n", + seq_printf(seq, "\t\tpixel clock khz = %d\n", drm_mode->clock); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tbpp = %d\n", + seq_printf(seq, "\t\tbpp = %d\n", debug->panel->dp_mode.bpp); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; /* Link Information */ - rc = snprintf(buf + len, max_size, - "\tdp_link:\n\t\ttest_requested = %d\n", + seq_printf(seq, "\tdp_link:\n\t\ttest_requested = %d\n", debug->link->sink_request); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tnum_lanes = %d\n", + seq_printf(seq, "\t\tnum_lanes = %d\n", debug->link->link_params.num_lanes); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - link_params_rate = debug->link->link_params.rate; - rc = snprintf(buf + len, max_size, - "\t\tbw_code = %d\n", + seq_printf(seq, "\t\tbw_code = %d\n", drm_dp_link_rate_to_bw_code(link_params_rate)); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - lclk = debug->link->link_params.rate * 1000; - rc = snprintf(buf + len, max_size, - "\t\tlclk = %lld\n", lclk); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tv_level = %d\n", + seq_printf(seq, "\t\tlclk = %lld\n", lclk); + seq_printf(seq, "\t\tv_level = %d\n", debug->link->phy_params.v_level); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tp_level = %d\n", + seq_printf(seq, "\t\tp_level = %d\n", debug->link->phy_params.p_level); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - if (copy_to_user(user_buff, buf, len)) - goto error; - - *ppos += len; - kfree(buf); - return len; - error: - kfree(buf); - return -EINVAL; + return 0; } +DEFINE_SHOW_ATTRIBUTE(dp_debug); static int dp_test_data_show(struct seq_file *m, void *data) { @@ -349,11 +241,6 @@ static int dp_test_active_open(struct inode *inode, inode->i_private); } -static const struct file_operations dp_debug_fops = { - .open = simple_open, - .read = dp_debug_read_info, -}; - static const struct file_operations test_active_fops = { .owner = THIS_MODULE, .open = dp_test_active_open, -- 2.29.2

1 0

[PATCH] drm/msm/dp: Simplify the dp_debug debugfs show function
by Bjorn Andersson 07 Oct '21

07 Oct '21

The "dp_debug" show function allocates a buffer and piecemeal appends line by line, checking for buffer overflows etc. Migrate the function to seq_file, to remove all the extra book keeping and simplify the function. Signed-off-by: Bjorn Andersson <bjorn.andersson(a)linaro.org> --- drivers/gpu/drm/msm/dp/dp_debug.c | 161 +++++------------------------- 1 file changed, 24 insertions(+), 137 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c index 2f6247e80e9d..566037942343 100644 --- a/drivers/gpu/drm/msm/dp/dp_debug.c +++ b/drivers/gpu/drm/msm/dp/dp_debug.c @@ -31,177 +31,69 @@ struct dp_debug_private { struct dp_debug dp_debug; }; -static int dp_debug_check_buffer_overflow(int rc, int *max_size, int *len) +static int dp_debug_show(struct seq_file *seq, void *p) { - if (rc >= *max_size) { - DRM_ERROR("buffer overflow\n"); - return -EINVAL; - } - *len += rc; - *max_size = SZ_4K - *len; - - return 0; -} - -static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff, - size_t count, loff_t *ppos) -{ - struct dp_debug_private *debug = file->private_data; - char *buf; - u32 len = 0, rc = 0; + struct dp_debug_private *debug = seq->private; u64 lclk = 0; - u32 max_size = SZ_4K; u32 link_params_rate; struct drm_display_mode *drm_mode; if (!debug) return -ENODEV; - if (*ppos) - return 0; - - buf = kzalloc(SZ_4K, GFP_KERNEL); - if (!buf) - return -ENOMEM; - drm_mode = &debug->panel->dp_mode.drm_mode; - rc = snprintf(buf + len, max_size, "\tname = %s\n", DEBUG_NAME); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdp_panel\n\t\tmax_pclk_khz = %d\n", + seq_printf(seq, "\tname = %s\n", DEBUG_NAME); + seq_printf(seq, "\tdp_panel\n\t\tmax_pclk_khz = %d\n", debug->panel->max_pclk_khz); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdrm_dp_link\n\t\trate = %u\n", + seq_printf(seq, "\tdrm_dp_link\n\t\trate = %u\n", debug->panel->link_info.rate); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tnum_lanes = %u\n", + seq_printf(seq, "\t\tnum_lanes = %u\n", debug->panel->link_info.num_lanes); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tcapabilities = %lu\n", + seq_printf(seq, "\t\tcapabilities = %lu\n", debug->panel->link_info.capabilities); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\tdp_panel_info:\n\t\tactive = %dx%d\n", + seq_printf(seq, "\tdp_panel_info:\n\t\tactive = %dx%d\n", drm_mode->hdisplay, drm_mode->vdisplay); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tback_porch = %dx%d\n", + seq_printf(seq, "\t\tback_porch = %dx%d\n", drm_mode->htotal - drm_mode->hsync_end, drm_mode->vtotal - drm_mode->vsync_end); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tfront_porch = %dx%d\n", + seq_printf(seq, "\t\tfront_porch = %dx%d\n", drm_mode->hsync_start - drm_mode->hdisplay, drm_mode->vsync_start - drm_mode->vdisplay); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tsync_width = %dx%d\n", + seq_printf(seq, "\t\tsync_width = %dx%d\n", drm_mode->hsync_end - drm_mode->hsync_start, drm_mode->vsync_end - drm_mode->vsync_start); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tactive_low = %dx%d\n", + seq_printf(seq, "\t\tactive_low = %dx%d\n", debug->panel->dp_mode.h_active_low, debug->panel->dp_mode.v_active_low); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\th_skew = %d\n", + seq_printf(seq, "\t\th_skew = %d\n", drm_mode->hskew); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\trefresh rate = %d\n", + seq_printf(seq, "\t\trefresh rate = %d\n", drm_mode_vrefresh(drm_mode)); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tpixel clock khz = %d\n", + seq_printf(seq, "\t\tpixel clock khz = %d\n", drm_mode->clock); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tbpp = %d\n", + seq_printf(seq, "\t\tbpp = %d\n", debug->panel->dp_mode.bpp); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; /* Link Information */ - rc = snprintf(buf + len, max_size, - "\tdp_link:\n\t\ttest_requested = %d\n", + seq_printf(seq, "\tdp_link:\n\t\ttest_requested = %d\n", debug->link->sink_request); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tnum_lanes = %d\n", + seq_printf(seq, "\t\tnum_lanes = %d\n", debug->link->link_params.num_lanes); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - link_params_rate = debug->link->link_params.rate; - rc = snprintf(buf + len, max_size, - "\t\tbw_code = %d\n", + seq_printf(seq, "\t\tbw_code = %d\n", drm_dp_link_rate_to_bw_code(link_params_rate)); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - lclk = debug->link->link_params.rate * 1000; - rc = snprintf(buf + len, max_size, - "\t\tlclk = %lld\n", lclk); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tv_level = %d\n", + seq_printf(seq, "\t\tlclk = %lld\n", lclk); + seq_printf(seq, "\t\tv_level = %d\n", debug->link->phy_params.v_level); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - rc = snprintf(buf + len, max_size, - "\t\tp_level = %d\n", + seq_printf(seq, "\t\tp_level = %d\n", debug->link->phy_params.p_level); - if (dp_debug_check_buffer_overflow(rc, &max_size, &len)) - goto error; - - if (copy_to_user(user_buff, buf, len)) - goto error; - - *ppos += len; - kfree(buf); - return len; - error: - kfree(buf); - return -EINVAL; + return 0; } +DEFINE_SHOW_ATTRIBUTE(dp_debug); static int dp_test_data_show(struct seq_file *m, void *data) { @@ -349,11 +241,6 @@ static int dp_test_active_open(struct inode *inode, inode->i_private); } -static const struct file_operations dp_debug_fops = { - .open = simple_open, - .read = dp_debug_read_info, -}; - static const struct file_operations test_active_fops = { .owner = THIS_MODULE, .open = dp_test_active_open, -- 2.29.2

2 1

[PATCH] gpu: host1x: select CONFIG_DMA_SHARED_BUFFER
by Arnd Bergmann 07 Oct '21

07 Oct '21

From: Arnd Bergmann <arnd(a)arndb.de> Linking fails when dma-buf is disabled: ld.lld: error: undefined symbol: dma_fence_release >>> referenced by fence.c >>> gpu/host1x/fence.o:(host1x_syncpt_fence_enable_signaling) in archive drivers/built-in.a >>> referenced by fence.c >>> gpu/host1x/fence.o:(host1x_fence_signal) in archive drivers/built-in.a >>> referenced by fence.c >>> gpu/host1x/fence.o:(do_fence_timeout) in archive drivers/built-in.a Fixes: 687db2207b1b ("gpu: host1x: Add DMA fence implementation") Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/gpu/host1x/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/host1x/Kconfig b/drivers/gpu/host1x/Kconfig index 6dab94adf25e..6815b4db17c1 100644 --- a/drivers/gpu/host1x/Kconfig +++ b/drivers/gpu/host1x/Kconfig @@ -2,6 +2,7 @@ config TEGRA_HOST1X tristate "NVIDIA Tegra host1x driver" depends on ARCH_TEGRA || (ARM && COMPILE_TEST) + select DMA_SHARED_BUFFER select IOMMU_IOVA help Driver for the NVIDIA Tegra host1x hardware. -- 2.29.2

3 2

[PATCH v2] host1x: bus.c: drop excess kernel-doc entry @key
by Randy Dunlap 07 Oct '21

07 Oct '21

Fix kernel-doc warning in host1x: ../drivers/gpu/host1x/bus.c:774: warning: Excess function parameter 'key' description in '__host1x_client_register' Fixes: 0cfe5a6e758f ("gpu: host1x: Split up client initalization and registration") Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org> Cc: Thierry Reding <thierry.reding(a)gmail.com> Cc: dri-devel(a)lists.freedesktop.org Cc: linux-tegra(a)vger.kernel.org Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> --- v2: rebase and resend drivers/gpu/host1x/bus.c | 1 - 1 file changed, 1 deletion(-) --- lnx-515-rc4.orig/drivers/gpu/host1x/bus.c +++ lnx-515-rc4/drivers/gpu/host1x/bus.c @@ -761,7 +761,6 @@ EXPORT_SYMBOL(host1x_client_exit); /** * __host1x_client_register() - register a host1x client * @client: host1x client - * @key: lock class key for the client-specific mutex * * Registers a host1x client with each host1x controller instance. Note that * each client will only match their parent host1x controller and will only be

2 1

[PATCH v3] drm/i915: remove IS_ACTIVE
by Lucas De Marchi 07 Oct '21

07 Oct '21

When trying to bring IS_ACTIVE to linux/kconfig.h I thought it wouldn't provide much value just encapsulating it in a boolean context. So I also added the support for handling undefined macros as the IS_ENABLED() counterpart. However the feedback received from Masahiro Yamada was that it is too ugly, not providing much value. And just wrapping in a boolean context is too dumb - we could simply open code it. As detailed in commit babaab2f4738 ("drm/i915: Encapsulate kconfig constant values inside boolean predicates"), the IS_ACTIVE macro was added to workaround a compilation warning. However after checking again our current uses of IS_ACTIVE it turned out there is only 1 case in which it triggers a warning in clang (due -Wconstant-logical-operand) and 2 in smatch. All the others can simply use the shorter version, without wrapping it in any macro. So here I'm dialing all the way back to simply removing the macro. That single case hit by clang can be changed to make the constant come first, so it doesn't think it's mask: - if (context && CONFIG_DRM_I915_FENCE_TIMEOUT) + if (CONFIG_DRM_I915_FENCE_TIMEOUT && context) As talked with Dan Carpenter, that logic will be added in smatch as well, so it will also stop warning about it. Signed-off-by: Lucas De Marchi <lucas.demarchi(a)intel.com> Acked-by: Jani Nikula <jani.nikula(a)intel.com> --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_mman.c | 2 +- drivers/gpu/drm/i915/gt/intel_engine.h | 4 ++-- drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c | 2 +- drivers/gpu/drm/i915/gt/intel_engine_types.h | 2 +- .../gpu/drm/i915/gt/intel_execlists_submission.c | 2 +- .../gpu/drm/i915/gt/selftest_engine_heartbeat.c | 4 ++-- drivers/gpu/drm/i915/gt/selftest_execlists.c | 14 +++++++------- drivers/gpu/drm/i915/i915_config.c | 2 +- drivers/gpu/drm/i915/i915_request.c | 2 +- drivers/gpu/drm/i915/i915_utils.h | 13 ------------- 11 files changed, 18 insertions(+), 31 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 74e33a4cdfe8..d225d3dd0b40 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -804,7 +804,7 @@ static int intel_context_set_gem(struct intel_context *ce, intel_engine_has_semaphores(ce->engine)) __set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags); - if (IS_ACTIVE(CONFIG_DRM_I915_REQUEST_TIMEOUT) && + if (CONFIG_DRM_I915_REQUEST_TIMEOUT && ctx->i915->params.request_timeout_ms) { unsigned int timeout_ms = ctx->i915->params.request_timeout_ms; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index 5130e8ed9564..65fc6ff5f59d 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -395,7 +395,7 @@ static vm_fault_t vm_fault_gtt(struct vm_fault *vmf) /* Track the mmo associated with the fenced vma */ vma->mmo = mmo; - if (IS_ACTIVE(CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND)) + if (CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND) intel_wakeref_auto(&i915->ggtt.userfault_wakeref, msecs_to_jiffies_timeout(CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND)); diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h index eed4634c08cd..452248884ef1 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine.h +++ b/drivers/gpu/drm/i915/gt/intel_engine.h @@ -275,7 +275,7 @@ static inline bool intel_engine_uses_guc(const struct intel_engine_cs *engine) static inline bool intel_engine_has_preempt_reset(const struct intel_engine_cs *engine) { - if (!IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT)) + if (!CONFIG_DRM_I915_PREEMPT_TIMEOUT) return false; return intel_engine_has_preemption(engine); @@ -302,7 +302,7 @@ intel_virtual_engine_has_heartbeat(const struct intel_engine_cs *engine) static inline bool intel_engine_has_heartbeat(const struct intel_engine_cs *engine) { - if (!IS_ACTIVE(CONFIG_DRM_I915_HEARTBEAT_INTERVAL)) + if (!CONFIG_DRM_I915_HEARTBEAT_INTERVAL) return false; if (intel_engine_is_virtual(engine)) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c index 74775ae961b2..a3698f611f45 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c @@ -207,7 +207,7 @@ static void heartbeat(struct work_struct *wrk) void intel_engine_unpark_heartbeat(struct intel_engine_cs *engine) { - if (!IS_ACTIVE(CONFIG_DRM_I915_HEARTBEAT_INTERVAL)) + if (!CONFIG_DRM_I915_HEARTBEAT_INTERVAL) return; next_heartbeat(engine); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 5ae1207c363b..9167ce52487c 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -556,7 +556,7 @@ intel_engine_has_semaphores(const struct intel_engine_cs *engine) static inline bool intel_engine_has_timeslices(const struct intel_engine_cs *engine) { - if (!IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (!CONFIG_DRM_I915_TIMESLICE_DURATION) return false; return engine->flags & I915_ENGINE_HAS_TIMESLICES; diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 7147fe80919e..73a79c2acd3a 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3339,7 +3339,7 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine) engine->flags |= I915_ENGINE_HAS_SEMAPHORES; if (can_preempt(engine)) { engine->flags |= I915_ENGINE_HAS_PREEMPTION; - if (IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (CONFIG_DRM_I915_TIMESLICE_DURATION) engine->flags |= I915_ENGINE_HAS_TIMESLICES; } } diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c index 317eebf086c3..6e6e4d747cca 100644 --- a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c +++ b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c @@ -290,7 +290,7 @@ static int live_heartbeat_fast(void *arg) int err = 0; /* Check that the heartbeat ticks at the desired rate. */ - if (!IS_ACTIVE(CONFIG_DRM_I915_HEARTBEAT_INTERVAL)) + if (!CONFIG_DRM_I915_HEARTBEAT_INTERVAL) return 0; for_each_engine(engine, gt, id) { @@ -352,7 +352,7 @@ static int live_heartbeat_off(void *arg) int err = 0; /* Check that we can turn off heartbeat and not interrupt VIP */ - if (!IS_ACTIVE(CONFIG_DRM_I915_HEARTBEAT_INTERVAL)) + if (!CONFIG_DRM_I915_HEARTBEAT_INTERVAL) return 0; for_each_engine(engine, gt, id) { diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index b3863abc51f5..25a8c4f62b0d 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -992,7 +992,7 @@ static int live_timeslice_preempt(void *arg) * need to preempt the current task and replace it with another * ready task. */ - if (!IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (!CONFIG_DRM_I915_TIMESLICE_DURATION) return 0; obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE); @@ -1122,7 +1122,7 @@ static int live_timeslice_rewind(void *arg) * but only a few of those requests, forcing us to rewind the * RING_TAIL of the original request. */ - if (!IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (!CONFIG_DRM_I915_TIMESLICE_DURATION) return 0; for_each_engine(engine, gt, id) { @@ -1299,7 +1299,7 @@ static int live_timeslice_queue(void *arg) * ELSP[1] is already occupied, so must rely on timeslicing to * eject ELSP[0] in favour of the queue.) */ - if (!IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (!CONFIG_DRM_I915_TIMESLICE_DURATION) return 0; obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE); @@ -1420,7 +1420,7 @@ static int live_timeslice_nopreempt(void *arg) * We should not timeslice into a request that is marked with * I915_REQUEST_NOPREEMPT. */ - if (!IS_ACTIVE(CONFIG_DRM_I915_TIMESLICE_DURATION)) + if (!CONFIG_DRM_I915_TIMESLICE_DURATION) return 0; if (igt_spinner_init(&spin, gt)) @@ -2260,7 +2260,7 @@ static int __cancel_hostile(struct live_preempt_cancel *arg) int err; /* Preempt cancel non-preemptible spinner in ELSP0 */ - if (!IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT)) + if (!CONFIG_DRM_I915_PREEMPT_TIMEOUT) return 0; if (!intel_has_reset_engine(arg->engine->gt)) @@ -2316,7 +2316,7 @@ static int __cancel_fail(struct live_preempt_cancel *arg) struct i915_request *rq; int err; - if (!IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT)) + if (!CONFIG_DRM_I915_PREEMPT_TIMEOUT) return 0; if (!intel_has_reset_engine(engine->gt)) @@ -3375,7 +3375,7 @@ static int live_preempt_timeout(void *arg) * Check that we force preemption to occur by cancelling the previous * context if it refuses to yield the GPU. */ - if (!IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT)) + if (!CONFIG_DRM_I915_PREEMPT_TIMEOUT) return 0; if (!intel_has_reset_engine(gt)) diff --git a/drivers/gpu/drm/i915/i915_config.c b/drivers/gpu/drm/i915/i915_config.c index b79b5f6d2cfa..afb828dab53b 100644 --- a/drivers/gpu/drm/i915/i915_config.c +++ b/drivers/gpu/drm/i915/i915_config.c @@ -8,7 +8,7 @@ unsigned long i915_fence_context_timeout(const struct drm_i915_private *i915, u64 context) { - if (context && IS_ACTIVE(CONFIG_DRM_I915_FENCE_TIMEOUT)) + if (CONFIG_DRM_I915_FENCE_TIMEOUT && context) return msecs_to_jiffies_timeout(CONFIG_DRM_I915_FENCE_TIMEOUT); return 0; diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index 79da5eca60af..91bd6f4e9909 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -1852,7 +1852,7 @@ long i915_request_wait(struct i915_request *rq, * completion. That requires having a good predictor for the request * duration, which we currently lack. */ - if (IS_ACTIVE(CONFIG_DRM_I915_MAX_REQUEST_BUSYWAIT) && + if (CONFIG_DRM_I915_MAX_REQUEST_BUSYWAIT && __i915_spin_request(rq, state)) goto out; diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h index 5259edacde38..62f189e064a9 100644 --- a/drivers/gpu/drm/i915/i915_utils.h +++ b/drivers/gpu/drm/i915/i915_utils.h @@ -458,17 +458,4 @@ static inline bool timer_expired(const struct timer_list *t) return timer_active(t) && !timer_pending(t); } -/* - * This is a lookalike for IS_ENABLED() that takes a kconfig value, - * e.g. CONFIG_DRM_I915_SPIN_REQUEST, and evaluates whether it is non-zero - * i.e. whether the configuration is active. Wrapping up the config inside - * a boolean context prevents clang and smatch from complaining about potential - * issues in confusing logical-&& with bitwise-& for constants. - * - * Sadly IS_ENABLED() itself does not work with kconfig values. - * - * Returns 0 if @config is 0, 1 if set to any value. - */ -#define IS_ACTIVE(config) ((config) != 0) - #endif /* !__I915_UTILS_H */ -- 2.33.0

2 1

[PATCH][next] drm/amd/display: Remove redundant initialization of variable result
by Colin King 07 Oct '21

07 Oct '21

From: Colin Ian King <colin.king(a)canonical.com> The variable result is being initialized with a value that is never read, it is being updated immediately afterwards in both branches of an if statement. The assignment is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c index 6936b9d549e5..8387767ec1b3 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c @@ -774,7 +774,7 @@ static enum link_training_result dpia_training_eq_phase(struct dc_link *link, struct link_training_settings *lt_settings, uint32_t hop) { - enum link_training_result result = LINK_TRAINING_EQ_FAIL_EQ; + enum link_training_result result; if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) result = dpia_training_eq_non_transparent(link, lt_settings, hop); -- 2.32.0

2 1

[PATCH] drm/msm: fix compilation when COMMON_CLK is disabled
by Christian König 07 Oct '21

07 Oct '21

We can't even compile test without this Fixes: b3ed524f84f5 ("drm/msm: allow compile_test on !ARM") Signed-off-by: Christian König <christian.koenig(a)amd.com> --- drivers/gpu/drm/msm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig index 5879f67bc88c..d9879b011fb0 100644 --- a/drivers/gpu/drm/msm/Kconfig +++ b/drivers/gpu/drm/msm/Kconfig @@ -5,7 +5,7 @@ config DRM_MSM depends on DRM depends on ARCH_QCOM || SOC_IMX5 || COMPILE_TEST depends on IOMMU_SUPPORT - depends on (OF && COMMON_CLK) || COMPILE_TEST + depends on (OF || COMPILE_TEST) && COMMON_CLK depends on QCOM_OCMEM || QCOM_OCMEM=n depends on QCOM_LLCC || QCOM_LLCC=n depends on QCOM_COMMAND_DB || QCOM_COMMAND_DB=n -- 2.25.1

2 1

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dri-devel October 2021