It can be useful to know what the driver's parameters have ended up set
to after sanitisation, so this commit adds a debugfs function to print
the current values of all the module parameters.
---
drivers/gpu/drm/i915/i915_debugfs.c | 45 +++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 2ad4c48..9d75efc 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2819,6 +2819,50 @@ static int i915_ddb_info(struct seq_file *m, void
*unused)
return 0;
}
+static int i915_params(struct seq_file *m, void *unused)
+{
+ size_t extra;
+
+ seq_printf(m, "i915.%s=%d\n", "modeset", i915.modeset);
+ seq_printf(m, "i915.%s=%d\n", "panel_ignore_lid",
i915.panel_ignore_lid);
+ seq_printf(m, "i915.%s=%u\n", "powersave", i915.powersave);
+ seq_printf(m, "i915.%s=%d\n", "semaphores", i915.semaphores);
+ seq_printf(m, "i915.%s=%u\n", "lvds_downclock", i915.lvds_downclock);
+ seq_printf(m, "i915.%s=%d\n", "lvds_channel_mode",
i915.lvds_channel_mode);
+ seq_printf(m, "i915.%s=%d\n", "panel_use_ssc", i915.panel_use_ssc);
+ seq_printf(m, "i915.%s=%d\n", "vbt_sdvo_panel_type",
i915.vbt_sdvo_panel_type);
+ seq_printf(m, "i915.%s=%d\n", "enable_rc6", i915.enable_rc6);
+ seq_printf(m, "i915.%s=%d\n", "enable_fbc", i915.enable_fbc);
+ seq_printf(m, "i915.%s=%d\n", "enable_ppgtt", i915.enable_ppgtt);
+ seq_printf(m, "i915.%s=%d\n", "enable_execlists",
i915.enable_execlists);
+ seq_printf(m, "i915.%s=%d\n", "enable_psr", i915.enable_psr);
+ seq_printf(m, "i915.%s=%u\n", "preliminary_hw_support",
i915.preliminary_hw_support);
+ seq_printf(m, "i915.%s=%d\n", "disable_power_well",
i915.disable_power_well);
+ seq_printf(m, "i915.%s=%d\n", "enable_ips", i915.enable_ips);
+ seq_printf(m, "i915.%s=%d\n", "invert_brightness",
i915.invert_brightness);
+ seq_printf(m, "i915.%s=%d\n", "enable_cmd_parser",
i915.enable_cmd_parser);
+ /* leave bools at the end to not create holes */
+ seq_printf(m, "i915.%s=%#x\n", "enable_hangcheck",
i915.enable_hangcheck);
+ seq_printf(m, "i915.%s=%#x\n", "fastboot", i915.fastboot);
+ seq_printf(m, "i915.%s=%#x\n", "prefault_disable",
i915.prefault_disable);
+ seq_printf(m, "i915.%s=%#x\n", "reset", i915.reset);
+ seq_printf(m, "i915.%s=%#x\n", "disable_display", i915.disable_display);
+ seq_printf(m, "i915.%s=%#x\n", "disable_vtd_wa", i915.disable_vtd_wa);
+ seq_printf(m, "i915.%s=%d\n", "use_mmio_flip", i915.use_mmio_flip);
+ seq_printf(m, "i915.%s=%#x\n", "mmio_debug", i915.mmio_debug);
+ seq_printf(m, "i915.%s=%#x\n", "verbose_state_checks",
i915.verbose_state_checks);
+
+ /* Print a message if new members have been added without this code
being updated */
+ extra = sizeof(struct i915_params)
+ - offsetof(struct i915_params, verbose_state_checks)
+ - sizeof(i915.verbose_state_checks);
+ if (extra)
+ seq_printf(m, "Note: %lu bytes of padding or unknown options
found after i915.%s\n",
+ extra, "verbose_state_checks");
+
+ return 0;
+}
+
struct pipe_crc_info {
const char *name;
struct drm_device *dev;
@@ -4433,6 +4477,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_dp_mst_info", i915_dp_mst_info, 0},
{"i915_wa_registers", i915_wa_registers, 0},
{"i915_ddb_info", i915_ddb_info, 0},
+ {"i915_params", i915_params, 0},
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
--
1.7.9.5
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