[Intel-gfx] [PATCH] drm/i915/skl: Update DDI buffer translation programming.
Jani Nikula
jani.nikula at linux.intel.com
Wed Aug 26 00:27:18 PDT 2015
On Tue, 25 Aug 2015, Rodrigo Vivi <rodrigo.vivi at intel.com> wrote:
> SKL-Y can now use the same programming for all VccIO values after an adjustment to I_boost.
> SKL-U DP table adjustments.
> 1. Remove SKL Y 0.95V from "SKL H and S" columns in all tables. The other SKL Y column removes the "0.85V VccIO" so it now applies to all voltages.
> 2. DP table changes SKL U 400mV+0db dword 0 value from 2016h to 201Bh.
> 3. DP table changes SKL U 600mv+0db dword 0 value from 2016h to 201Bh.
> 4. DP table increases I_boost to level 3 for SKL Y 400mv+9.5db.
>
> v2: Fix compilation warnings as pointed by Paulo.
>
> Reference: Graphics Spec Change r97962
> Cc: Arthur Runyan <arthur.j.runyan at intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
Pushed to drm-intel-next-fixes.
BR,
Jani.
> ---
> drivers/gpu/drm/i915/intel_ddi.c | 75 ++++++++++++++--------------------------
> 1 file changed, 25 insertions(+), 50 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 56d778f..3b056c4 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -128,7 +128,7 @@ static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = {
> { 0x80FFFFFF, 0x001B0002, 0x0 },/* 9: 1000 1000 0 */
> };
>
> -/* Skylake H, S, and Skylake Y with 0.95V VccIO */
> +/* Skylake H and S */
> static const struct ddi_buf_trans skl_ddi_translations_dp[] = {
> { 0x00002016, 0x000000A0, 0x0 },
> { 0x00005012, 0x0000009B, 0x0 },
> @@ -143,23 +143,23 @@ static const struct ddi_buf_trans skl_ddi_translations_dp[] = {
>
> /* Skylake U */
> static const struct ddi_buf_trans skl_u_ddi_translations_dp[] = {
> - { 0x00002016, 0x000000A2, 0x0 },
> + { 0x0000201B, 0x000000A2, 0x0 },
> { 0x00005012, 0x00000088, 0x0 },
> { 0x00007011, 0x00000087, 0x0 },
> - { 0x80009010, 0x000000C7, 0x1 }, /* Uses I_boost */
> - { 0x00002016, 0x0000009D, 0x0 },
> + { 0x80009010, 0x000000C7, 0x1 }, /* Uses I_boost level 0x1 */
> + { 0x0000201B, 0x0000009D, 0x0 },
> { 0x00005012, 0x000000C7, 0x0 },
> { 0x00007011, 0x000000C7, 0x0 },
> { 0x00002016, 0x00000088, 0x0 },
> { 0x00005012, 0x000000C7, 0x0 },
> };
>
> -/* Skylake Y with 0.85V VccIO */
> -static const struct ddi_buf_trans skl_y_085v_ddi_translations_dp[] = {
> +/* Skylake Y */
> +static const struct ddi_buf_trans skl_y_ddi_translations_dp[] = {
> { 0x00000018, 0x000000A2, 0x0 },
> { 0x00005012, 0x00000088, 0x0 },
> { 0x00007011, 0x00000087, 0x0 },
> - { 0x80009010, 0x000000C7, 0x1 }, /* Uses I_boost */
> + { 0x80009010, 0x000000C7, 0x3 }, /* Uses I_boost level 0x3 */
> { 0x00000018, 0x0000009D, 0x0 },
> { 0x00005012, 0x000000C7, 0x0 },
> { 0x00007011, 0x000000C7, 0x0 },
> @@ -168,7 +168,7 @@ static const struct ddi_buf_trans skl_y_085v_ddi_translations_dp[] = {
> };
>
> /*
> - * Skylake H and S, and Skylake Y with 0.95V VccIO
> + * Skylake H and S
> * eDP 1.4 low vswing translation parameters
> */
> static const struct ddi_buf_trans skl_ddi_translations_edp[] = {
> @@ -202,10 +202,10 @@ static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = {
> };
>
> /*
> - * Skylake Y with 0.95V VccIO
> + * Skylake Y
> * eDP 1.4 low vswing translation parameters
> */
> -static const struct ddi_buf_trans skl_y_085v_ddi_translations_edp[] = {
> +static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = {
> { 0x00000018, 0x000000A8, 0x0 },
> { 0x00004013, 0x000000AB, 0x0 },
> { 0x00007011, 0x000000A4, 0x0 },
> @@ -218,7 +218,7 @@ static const struct ddi_buf_trans skl_y_085v_ddi_translations_edp[] = {
> { 0x00000018, 0x0000008A, 0x0 },
> };
>
> -/* Skylake H, S and U, and Skylake Y with 0.95V VccIO */
> +/* Skylake U, H and S */
> static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
> { 0x00000018, 0x000000AC, 0x0 },
> { 0x00005012, 0x0000009D, 0x0 },
> @@ -233,8 +233,8 @@ static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
> { 0x00000018, 0x000000C7, 0x0 },
> };
>
> -/* Skylake Y with 0.85V VccIO */
> -static const struct ddi_buf_trans skl_y_085v_ddi_translations_hdmi[] = {
> +/* Skylake Y */
> +static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
> { 0x00000018, 0x000000A1, 0x0 },
> { 0x00005012, 0x000000DF, 0x0 },
> { 0x00007011, 0x00000084, 0x0 },
> @@ -244,7 +244,7 @@ static const struct ddi_buf_trans skl_y_085v_ddi_translations_hdmi[] = {
> { 0x00006013, 0x000000C7, 0x0 },
> { 0x00000018, 0x0000008A, 0x0 },
> { 0x00003015, 0x000000C7, 0x0 }, /* Default */
> - { 0x80003015, 0x000000C7, 0x7 }, /* Uses I_boost */
> + { 0x80003015, 0x000000C7, 0x7 }, /* Uses I_boost level 0x7 */
> { 0x00000018, 0x000000C7, 0x0 },
> };
>
> @@ -335,19 +335,11 @@ intel_dig_port_supports_hdmi(const struct intel_digital_port *intel_dig_port)
> static const struct ddi_buf_trans *skl_get_buf_trans_dp(struct drm_device *dev,
> int *n_entries)
> {
> - struct drm_i915_private *dev_priv = dev->dev_private;
> const struct ddi_buf_trans *ddi_translations;
> - static int is_095v = -1;
> -
> - if (is_095v == -1) {
> - u32 spr1 = I915_READ(UAIMI_SPR1);
> -
> - is_095v = spr1 & SKL_VCCIO_MASK;
> - }
>
> - if (IS_SKL_ULX(dev) && !is_095v) {
> - ddi_translations = skl_y_085v_ddi_translations_dp;
> - *n_entries = ARRAY_SIZE(skl_y_085v_ddi_translations_dp);
> + if (IS_SKL_ULX(dev)) {
> + ddi_translations = skl_y_ddi_translations_dp;
> + *n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp);
> } else if (IS_SKL_ULT(dev)) {
> ddi_translations = skl_u_ddi_translations_dp;
> *n_entries = ARRAY_SIZE(skl_u_ddi_translations_dp);
> @@ -364,23 +356,14 @@ static const struct ddi_buf_trans *skl_get_buf_trans_edp(struct drm_device *dev,
> {
> struct drm_i915_private *dev_priv = dev->dev_private;
> const struct ddi_buf_trans *ddi_translations;
> - static int is_095v = -1;
> -
> - if (is_095v == -1) {
> - u32 spr1 = I915_READ(UAIMI_SPR1);
>
> - is_095v = spr1 & SKL_VCCIO_MASK;
> - }
> -
> - if (IS_SKL_ULX(dev) && !is_095v) {
> + if (IS_SKL_ULX(dev)) {
> if (dev_priv->edp_low_vswing) {
> - ddi_translations = skl_y_085v_ddi_translations_edp;
> - *n_entries =
> - ARRAY_SIZE(skl_y_085v_ddi_translations_edp);
> + ddi_translations = skl_y_ddi_translations_edp;
> + *n_entries = ARRAY_SIZE(skl_y_ddi_translations_edp);
> } else {
> - ddi_translations = skl_y_085v_ddi_translations_dp;
> - *n_entries =
> - ARRAY_SIZE(skl_y_085v_ddi_translations_dp);
> + ddi_translations = skl_y_ddi_translations_dp;
> + *n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp);
> }
> } else if (IS_SKL_ULT(dev)) {
> if (dev_priv->edp_low_vswing) {
> @@ -407,19 +390,11 @@ static const struct ddi_buf_trans *
> skl_get_buf_trans_hdmi(struct drm_device *dev,
> int *n_entries)
> {
> - struct drm_i915_private *dev_priv = dev->dev_private;
> const struct ddi_buf_trans *ddi_translations;
> - static int is_095v = -1;
> -
> - if (is_095v == -1) {
> - u32 spr1 = I915_READ(UAIMI_SPR1);
> -
> - is_095v = spr1 & SKL_VCCIO_MASK;
> - }
>
> - if (IS_SKL_ULX(dev) && !is_095v) {
> - ddi_translations = skl_y_085v_ddi_translations_hdmi;
> - *n_entries = ARRAY_SIZE(skl_y_085v_ddi_translations_hdmi);
> + if (IS_SKL_ULX(dev)) {
> + ddi_translations = skl_y_ddi_translations_hdmi;
> + *n_entries = ARRAY_SIZE(skl_y_ddi_translations_hdmi);
> } else {
> ddi_translations = skl_ddi_translations_hdmi;
> *n_entries = ARRAY_SIZE(skl_ddi_translations_hdmi);
> --
> 2.4.3
>
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--
Jani Nikula, Intel Open Source Technology Center
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