From: Stanislav Lisovskiy <[email protected]> Add a new Lunar Lake CDCLK table from BSpec and also a helper function in order to be able to find lowest possible CDCLK, which has required MDCLK for the correspodent pixel rate.
Bspec: 68861 Signed-off-by: Stanislav Lisovskiy <[email protected]> Signed-off-by: Lucas De Marchi <[email protected]> --- drivers/gpu/drm/i915/display/intel_cdclk.c | 52 +++++++++++++++++++++- 1 file changed, 50 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 3e566f45996d..ed45a2cf5c9a 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -1381,6 +1381,31 @@ static const struct intel_cdclk_vals mtl_cdclk_table[] = { {} }; +static const struct intel_cdclk_vals lnl_cdclk_table[] = { + { .refclk = 38400, .cdclk = 153600, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xaaaa }, + { .refclk = 38400, .cdclk = 172800, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xad5a }, + { .refclk = 38400, .cdclk = 192000, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xb6b6 }, + { .refclk = 38400, .cdclk = 211200, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xdbb6 }, + { .refclk = 38400, .cdclk = 230400, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xeeee }, + { .refclk = 38400, .cdclk = 249600, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xf7de }, + { .refclk = 38400, .cdclk = 268800, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xfefe }, + { .refclk = 38400, .cdclk = 288000, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0xfffe }, + { .refclk = 38400, .cdclk = 307200, .mdclk = 614400, .divider = 2, .ratio = 16, .waveform = 0x0000 }, + { .refclk = 38400, .cdclk = 330000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0xdbb6 }, + { .refclk = 38400, .cdclk = 360000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0xeeee }, + { .refclk = 38400, .cdclk = 390000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0xf7de }, + { .refclk = 38400, .cdclk = 420000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0xfefe }, + { .refclk = 38400, .cdclk = 450000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0xfffe }, + { .refclk = 38400, .cdclk = 480000, .mdclk = 960000, .divider = 2, .ratio = 25, .waveform = 0x0000 }, + { .refclk = 38400, .cdclk = 487200, .mdclk = 1113600, .divider = 2, .ratio = 29, .waveform = 0xfefe }, + { .refclk = 38400, .cdclk = 522000, .mdclk = 1113600, .divider = 2, .ratio = 29, .waveform = 0xfffe }, + { .refclk = 38400, .cdclk = 556800, .mdclk = 1113600, .divider = 2, .ratio = 29, .waveform = 0x0000 }, + { .refclk = 38400, .cdclk = 571200, .mdclk = 1305600, .divider = 2, .ratio = 34, .waveform = 0xfefe }, + { .refclk = 38400, .cdclk = 612000, .mdclk = 1305600, .divider = 2, .ratio = 34, .waveform = 0xfffe }, + { .refclk = 38400, .cdclk = 652800, .mdclk = 1305600, .divider = 2, .ratio = 34, .waveform = 0x0000 }, + {} +}; + static int bxt_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk) { const struct intel_cdclk_vals *table = dev_priv->display.cdclk.table; @@ -2531,12 +2556,32 @@ intel_set_cdclk_post_plane_update(struct intel_atomic_state *state) } } +static int +cdclk_match_by_refclk_mdclk(struct drm_i915_private *i915, int pixel_rate) +{ + const struct intel_cdclk_vals *table = i915->display.cdclk.table; + int i; + + for (i = 0; table[i].refclk; i++) + if (table[i].refclk == i915->display.cdclk.hw.ref && + table[i].mdclk >= pixel_rate) + return table[i].cdclk; + + drm_WARN(&i915->drm, 1, + "Cannot satisfy pixel rate %d with refclk %u\n", + pixel_rate, i915->display.cdclk.hw.ref); + + return 0; +} + static int intel_pixel_rate_to_cdclk(const struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); int pixel_rate = crtc_state->pixel_rate; - if (DISPLAY_VER(dev_priv) >= 10) + if (DISPLAY_VER(dev_priv) >= 20) + return cdclk_match_by_refclk_mdclk(dev_priv, pixel_rate); + else if (DISPLAY_VER(dev_priv) >= 10) return DIV_ROUND_UP(pixel_rate, 2); else if (DISPLAY_VER(dev_priv) == 9 || IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) @@ -3581,7 +3626,10 @@ static const struct intel_cdclk_funcs i830_cdclk_funcs = { */ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv) { - if (IS_METEORLAKE(dev_priv)) { + if (DISPLAY_VER(dev_priv) >= 20) { + dev_priv->display.funcs.cdclk = &mtl_cdclk_funcs; + dev_priv->display.cdclk.table = lnl_cdclk_table; + } else if (IS_METEORLAKE(dev_priv)) { dev_priv->display.funcs.cdclk = &mtl_cdclk_funcs; dev_priv->display.cdclk.table = mtl_cdclk_table; } else if (IS_DG2(dev_priv)) { -- 2.40.1
