Ben Widawsky 46ddf19477 drm/i915: Add setters for min/max frequency ... Provide a standardized sysfs interface for setting min, and max frequencies. The code which reads the limits were lifted from the debugfs files. As a brief explanation, the limits are similar to the CPU p-states. We have 3 states: RP0 - ie. max frequency RP1 - ie. "preferred min" frequency RPn - seriously lowest frequency Initially Daniel asked me to clamp the writes to supported values, but in conforming to the way the cpufreq drivers seem to work, instead return -EINVAL (noticed by Jesse in discussion). The values can be used by userspace wishing to control the limits of the GPU (see the CC list for people who care). v4: Make exceeding the soft limits return -EINVAL as well (Daniel) v3: bug fix (Ben) - was passing the MHz value to gen6_set_rps instead of the step value. To fix, deal only with step values by doing the divide at the top. v2: add the dropped mutex_unlock in error cases (Chris) EINVAL on both too min, or too max (Daniel) v2 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> CC: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2012-09-20 14:23:06 +02:00
..
dvo_ch7xxx.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo_ch7017.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo_ivch.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo_ns2501.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo_sil164.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo_tfp410.c	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
dvo.h	drm/i915/dvo: implement get_hw_state	2012-09-06 07:58:52 +02:00
i915_debugfs.c	drm/i915: #define gpu freq multipler	2012-09-20 14:23:00 +02:00
i915_dma.c	i915: use alloc_ordered_workqueue() instead of explicit UNBOUND w/ max_active = 1	2012-08-24 01:13:53 +02:00
i915_drv.c	Merge the modeset-rework, basic conversion into drm-intel-next	2012-09-06 22:52:43 +02:00
i915_drv.h	drm/i915: #define gpu freq multipler	2012-09-20 14:23:00 +02:00
i915_gem_context.c	drm/i915: Only pwrite through the GTT if there is space in the aperture	2012-08-24 02:03:33 +02:00
i915_gem_debug.c	drm/i915: stop using dev->agp->base	2012-06-12 22:18:06 +02:00
i915_gem_dmabuf.c	drm/i915: Replace the array of pages with a scatterlist	2012-09-20 14:22:57 +02:00
i915_gem_evict.c	drm/i915: Only pwrite through the GTT if there is space in the aperture	2012-08-24 02:03:33 +02:00
i915_gem_execbuffer.c	drm/i915: Drop the misleading cast to the wrong user pointer type	2012-09-20 14:23:05 +02:00
i915_gem_gtt.c	drm/i915: Replace the array of pages with a scatterlist	2012-09-20 14:22:57 +02:00
i915_gem_stolen.c	drm/i915: Split the stolen handling for GEM out of i915_dma.c	2012-05-03 11:18:11 +02:00
i915_gem_tiling.c	drm/i915: Replace the array of pages with a scatterlist	2012-09-20 14:22:57 +02:00
i915_gem.c	drm/i915: Replace the array of pages with a scatterlist	2012-09-20 14:22:57 +02:00
i915_ioc32.c	drm/i915: [sparse] trivial sparse fixes	2012-04-18 10:34:49 +02:00
i915_irq.c	drm/i915: Error checks in gen6_set_rps	2012-09-20 14:23:01 +02:00
i915_reg.h	Merge the modeset-rework, basic conversion into drm-intel-next	2012-09-06 22:52:43 +02:00
i915_suspend.c	Linux 3.5-rc7	2012-07-20 00:53:28 -04:00
i915_sysfs.c	drm/i915: Add setters for min/max frequency	2012-09-20 14:23:06 +02:00
i915_trace_points.c	drm/i915: [sparse] trivial sparse fixes	2012-04-18 10:34:49 +02:00
i915_trace.h	drm/i915: add a tracepoint for gpu frequency changes	2012-09-03 10:09:27 +02:00
intel_acpi.c	drm/i915: [sparse] trivial sparse fixes	2012-04-18 10:34:49 +02:00
intel_bios.c	drm/i915/bios: cleanup return type of intel_parse_bios()	2012-06-27 10:17:51 +01:00
intel_bios.h	drm/i915/bios: cleanup return type of intel_parse_bios()	2012-06-27 10:17:51 +01:00
intel_crt.c	Merge the modeset-rework, basic conversion into drm-intel-next	2012-09-06 22:52:43 +02:00
intel_ddi.c	drm/i915/hdmi: implement get_hw_state	2012-09-06 07:58:22 +02:00
intel_display.c	drm/i915: add encoder->pre_enable/post_disable	2012-09-20 14:23:02 +02:00
intel_dp.c	drm/i915: rip out edp special case from dp_link_down	2012-09-20 14:23:05 +02:00
intel_drv.h	drm/i915: add encoder->pre_enable/post_disable	2012-09-20 14:23:02 +02:00
intel_dvo.c	drm/i915: improve modeset state checking after dpms calls	2012-09-06 08:21:31 +02:00
intel_fb.c	drm/i915: Zero initialize mode_cmd	2012-07-05 13:27:58 +02:00
intel_hdmi.c	Merge the modeset-rework, basic conversion into drm-intel-next	2012-09-06 22:52:43 +02:00
intel_i2c.c	drm/i915: ensure i2c adapter is all set before adding it	2012-08-13 19:04:24 +02:00
intel_lvds.c	drm/i915: fix OOPS in lid_notify	2012-09-18 00:59:37 +02:00
intel_modes.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next	2012-08-27 16:22:20 +10:00
intel_opregion.c	i915: initialize CADL in opregion	2012-09-20 14:23:05 +02:00
intel_overlay.c	drm/i915: Only pwrite through the GTT if there is space in the aperture	2012-08-24 02:03:33 +02:00
intel_panel.c	drm/i915: Fix blank panel at reopening lid	2012-08-11 21:15:16 +02:00
intel_pm.c	drm/i915: Error checks in gen6_set_rps	2012-09-20 14:23:01 +02:00
intel_ringbuffer.c	drm/i915: Replace the array of pages with a scatterlist	2012-09-20 14:22:57 +02:00
intel_ringbuffer.h	drm/i915: Lazily apply the SNB+ seqno w/a	2012-08-10 11:11:32 +02:00
intel_sdvo_regs.h	drm/i915: properly handle interlaced bit for sdvo dtd conversion	2012-05-24 17:53:52 +02:00
intel_sdvo.c	Merge the modeset-rework, basic conversion into drm-intel-next	2012-09-06 22:52:43 +02:00
intel_sprite.c	drm/i915: mask tiled bit when updating ILK sprites	2012-07-20 12:21:40 +02:00
intel_tv.c	drm/i915: s/intel_encoder_disable/intel_encoder_noop	2012-09-06 08:21:27 +02:00
Makefile	drm/i915: Support for ns2501-DVO	2012-07-25 18:23:48 +02:00