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drm/i915/icl: Map VBT DDC Pin to BSpec DDC Pin

Ver código fonte 
On ICL we need to map VBT DDC Pin to BSpec DDC Pin.
Adding ICL Pin Values.

According to VBT
Block 2 (General Bytes Definition)
DDC Bus

+----------+-----------+--------------------+
| DDI Type | VBT Value | BSpec Mapped Value |
+----------+-----------+--------------------+
| DDI-A    | 0x1       | 0x1                |
| DDI-B    | 0x2       | 0x2                |
| PORT-1   | 0x4       | 0x9                |
| PORT-2   | 0x5       | 0xA                |
| PORT-3   | 0x6       | 0xB                |
| PORT-4   | 0x7       | 0xC                |
+----------+-----------+--------------------+

Cc: James Ausmus <james.ausmus@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Clinton Taylor <clinton.a.taylor@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Paulo: checkpatch fixes.]
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180522002558.29262-9-paulo.r.zanoni@intel.com
Esse commit está contido em:
Radhakrishna Sripada
2018-05-21 17:25:42 -07:00
commit de Paulo Zanoni
pai a2bc69a1a9
commit 3937eb1a07
2 arquivos alterados com 33 adições e 8 exclusões
Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

35
drivers/gpu/drm/i915/intel_bios.c
Ver arquivo

@@ -1259,18 +1259,37 @@ static const u8 cnp_ddc_pin_map[] = {
[DDC_BUS_DDI_F] = GMBUS_PIN_3_BXT, /* sic */
};
static const u8 icp_ddc_pin_map[] = {
[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
[ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
[ICL_DDC_BUS_PORT_1] = GMBUS_PIN_9_TC1_ICP,
[ICL_DDC_BUS_PORT_2] = GMBUS_PIN_10_TC2_ICP,
[ICL_DDC_BUS_PORT_3] = GMBUS_PIN_11_TC3_ICP,
[ICL_DDC_BUS_PORT_4] = GMBUS_PIN_12_TC4_ICP,
};
static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
{
if (HAS_PCH_CNP(dev_priv)) {
if (vbt_pin < ARRAY_SIZE(cnp_ddc_pin_map)) {
return cnp_ddc_pin_map[vbt_pin];
} else {
DRM_DEBUG_KMS("Ignoring alternate pin: VBT claims DDC pin %d, which is not valid for this platform\n", vbt_pin);
return 0;
}
const u8 *ddc_pin_map;
int n_entries;
if (HAS_PCH_ICP(dev_priv)) {
ddc_pin_map = icp_ddc_pin_map;
n_entries = ARRAY_SIZE(icp_ddc_pin_map);
} else if (HAS_PCH_CNP(dev_priv)) {
ddc_pin_map = cnp_ddc_pin_map;
n_entries = ARRAY_SIZE(cnp_ddc_pin_map);
} else {
/* Assuming direct map */
return vbt_pin;
}
return vbt_pin;
if (vbt_pin < n_entries && ddc_pin_map[vbt_pin] != 0)
return ddc_pin_map[vbt_pin];
DRM_DEBUG_KMS("Ignoring alternate pin: VBT claims DDC pin %d, which is not valid for this platform\n",
vbt_pin);
return 0;
}
static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,