36,12 → 36,13 |
|
static int panel_type; |
|
static void * |
find_section(struct bdb_header *bdb, int section_id) |
static const void * |
find_section(const void *_bdb, int section_id) |
{ |
u8 *base = (u8 *)bdb; |
const struct bdb_header *bdb = _bdb; |
const u8 *base = _bdb; |
int index = 0; |
u16 total, current_size; |
u32 total, current_size; |
u8 current_id; |
|
/* skip to first section */ |
53,9 → 54,13 |
current_id = *(base + index); |
index++; |
|
current_size = *((u16 *)(base + index)); |
current_size = *((const u16 *)(base + index)); |
index += 2; |
|
/* The MIPI Sequence Block v3+ has a separate size field. */ |
if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3) |
current_size = *((const u32 *)(base + index + 1)); |
|
if (index + current_size > total) |
return NULL; |
|
69,7 → 74,7 |
} |
|
static u16 |
get_blocksize(void *p) |
get_blocksize(const void *p) |
{ |
u16 *block_ptr, block_size; |
|
121,42 → 126,6 |
drm_mode_set_name(panel_fixed_mode); |
} |
|
static bool |
lvds_dvo_timing_equal_size(const struct lvds_dvo_timing *a, |
const struct lvds_dvo_timing *b) |
{ |
if (a->hactive_hi != b->hactive_hi || |
a->hactive_lo != b->hactive_lo) |
return false; |
|
if (a->hsync_off_hi != b->hsync_off_hi || |
a->hsync_off_lo != b->hsync_off_lo) |
return false; |
|
if (a->hsync_pulse_width != b->hsync_pulse_width) |
return false; |
|
if (a->hblank_hi != b->hblank_hi || |
a->hblank_lo != b->hblank_lo) |
return false; |
|
if (a->vactive_hi != b->vactive_hi || |
a->vactive_lo != b->vactive_lo) |
return false; |
|
if (a->vsync_off != b->vsync_off) |
return false; |
|
if (a->vsync_pulse_width != b->vsync_pulse_width) |
return false; |
|
if (a->vblank_hi != b->vblank_hi || |
a->vblank_lo != b->vblank_lo) |
return false; |
|
return true; |
} |
|
static const struct lvds_dvo_timing * |
get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
204,7 → 173,7 |
/* Try to find integrated panel data */ |
static void |
parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
const struct bdb_lvds_options *lvds_options; |
const struct bdb_lvds_lfp_data *lvds_lfp_data; |
212,7 → 181,7 |
const struct lvds_dvo_timing *panel_dvo_timing; |
const struct lvds_fp_timing *fp_timing; |
struct drm_display_mode *panel_fixed_mode; |
int i, downclock, drrs_mode; |
int drrs_mode; |
|
lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
if (!lvds_options) |
271,30 → 240,6 |
DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
drm_mode_debug_printmodeline(panel_fixed_mode); |
|
/* |
* Iterate over the LVDS panel timing info to find the lowest clock |
* for the native resolution. |
*/ |
downclock = panel_dvo_timing->clock; |
for (i = 0; i < 16; i++) { |
const struct lvds_dvo_timing *dvo_timing; |
|
dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
lvds_lfp_data_ptrs, |
i); |
if (lvds_dvo_timing_equal_size(dvo_timing, panel_dvo_timing) && |
dvo_timing->clock < downclock) |
downclock = dvo_timing->clock; |
} |
|
if (downclock < panel_dvo_timing->clock && i915.lvds_downclock) { |
dev_priv->lvds_downclock_avail = 1; |
dev_priv->lvds_downclock = downclock * 10; |
DRM_DEBUG_KMS("LVDS downclock is found in VBT. " |
"Normal Clock %dKHz, downclock %dKHz\n", |
panel_fixed_mode->clock, 10*downclock); |
} |
|
fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, |
lvds_lfp_data_ptrs, |
lvds_options->panel_type); |
310,7 → 255,8 |
} |
|
static void |
parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) |
parse_lfp_backlight(struct drm_i915_private *dev_priv, |
const struct bdb_header *bdb) |
{ |
const struct bdb_lfp_backlight_data *backlight_data; |
const struct bdb_lfp_backlight_data_entry *entry; |
348,9 → 294,9 |
/* Try to find sdvo panel data */ |
static void |
parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct lvds_dvo_timing *dvo_timing; |
const struct lvds_dvo_timing *dvo_timing; |
struct drm_display_mode *panel_fixed_mode; |
int index; |
|
361,7 → 307,7 |
} |
|
if (index == -1) { |
struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
const struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
|
sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); |
if (!sdvo_lvds_options) |
402,10 → 348,10 |
|
static void |
parse_general_features(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct drm_device *dev = dev_priv->dev; |
struct bdb_general_features *general; |
const struct bdb_general_features *general; |
|
general = find_section(bdb, BDB_GENERAL_FEATURES); |
if (general) { |
428,9 → 374,9 |
|
static void |
parse_general_definitions(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct bdb_general_definitions *general; |
const struct bdb_general_definitions *general; |
|
general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
if (general) { |
438,7 → 384,7 |
if (block_size >= sizeof(*general)) { |
int bus_pin = general->crt_ddc_gmbus_pin; |
DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
if (intel_gmbus_is_port_valid(bus_pin)) |
if (intel_gmbus_is_valid_pin(dev_priv, bus_pin)) |
dev_priv->vbt.crt_ddc_pin = bus_pin; |
} else { |
DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
447,13 → 393,19 |
} |
} |
|
static const union child_device_config * |
child_device_ptr(const struct bdb_general_definitions *p_defs, int i) |
{ |
return (const void *) &p_defs->devices[i * p_defs->child_dev_size]; |
} |
|
static void |
parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct sdvo_device_mapping *p_mapping; |
struct bdb_general_definitions *p_defs; |
union child_device_config *p_child; |
const struct bdb_general_definitions *p_defs; |
const struct old_child_dev_config *child; /* legacy */ |
int i, child_device_num, count; |
u16 block_size; |
|
462,14 → 414,14 |
DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
return; |
} |
/* judge whether the size of child device meets the requirements. |
* If the child device size obtained from general definition block |
* is different with sizeof(struct child_device_config), skip the |
* parsing of sdvo device info |
|
/* |
* Only parse SDVO mappings when the general definitions block child |
* device size matches that of the *legacy* child device config |
* struct. Thus, SDVO mapping will be skipped for newer VBT. |
*/ |
if (p_defs->child_dev_size != sizeof(*p_child)) { |
/* different child dev size . Ignore it */ |
DRM_DEBUG_KMS("different child size is found. Invalid.\n"); |
if (p_defs->child_dev_size != sizeof(*child)) { |
DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n"); |
return; |
} |
/* get the block size of general definitions */ |
476,16 → 428,16 |
block_size = get_blocksize(p_defs); |
/* get the number of child device */ |
child_device_num = (block_size - sizeof(*p_defs)) / |
sizeof(*p_child); |
p_defs->child_dev_size; |
count = 0; |
for (i = 0; i < child_device_num; i++) { |
p_child = &(p_defs->devices[i]); |
if (!p_child->old.device_type) { |
child = &child_device_ptr(p_defs, i)->old; |
if (!child->device_type) { |
/* skip the device block if device type is invalid */ |
continue; |
} |
if (p_child->old.slave_addr != SLAVE_ADDR1 && |
p_child->old.slave_addr != SLAVE_ADDR2) { |
if (child->slave_addr != SLAVE_ADDR1 && |
child->slave_addr != SLAVE_ADDR2) { |
/* |
* If the slave address is neither 0x70 nor 0x72, |
* it is not a SDVO device. Skip it. |
492,8 → 444,8 |
*/ |
continue; |
} |
if (p_child->old.dvo_port != DEVICE_PORT_DVOB && |
p_child->old.dvo_port != DEVICE_PORT_DVOC) { |
if (child->dvo_port != DEVICE_PORT_DVOB && |
child->dvo_port != DEVICE_PORT_DVOC) { |
/* skip the incorrect SDVO port */ |
DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
continue; |
500,16 → 452,16 |
} |
DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
" %s port\n", |
p_child->old.slave_addr, |
(p_child->old.dvo_port == DEVICE_PORT_DVOB) ? |
child->slave_addr, |
(child->dvo_port == DEVICE_PORT_DVOB) ? |
"SDVOB" : "SDVOC"); |
p_mapping = &(dev_priv->sdvo_mappings[p_child->old.dvo_port - 1]); |
p_mapping = &(dev_priv->sdvo_mappings[child->dvo_port - 1]); |
if (!p_mapping->initialized) { |
p_mapping->dvo_port = p_child->old.dvo_port; |
p_mapping->slave_addr = p_child->old.slave_addr; |
p_mapping->dvo_wiring = p_child->old.dvo_wiring; |
p_mapping->ddc_pin = p_child->old.ddc_pin; |
p_mapping->i2c_pin = p_child->old.i2c_pin; |
p_mapping->dvo_port = child->dvo_port; |
p_mapping->slave_addr = child->slave_addr; |
p_mapping->dvo_wiring = child->dvo_wiring; |
p_mapping->ddc_pin = child->ddc_pin; |
p_mapping->i2c_pin = child->i2c_pin; |
p_mapping->initialized = 1; |
DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
p_mapping->dvo_port, |
521,7 → 473,7 |
DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
"two SDVO device.\n"); |
} |
if (p_child->old.slave2_addr) { |
if (child->slave2_addr) { |
/* Maybe this is a SDVO device with multiple inputs */ |
/* And the mapping info is not added */ |
DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
539,9 → 491,9 |
|
static void |
parse_driver_features(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct bdb_driver_features *driver; |
const struct bdb_driver_features *driver; |
|
driver = find_section(bdb, BDB_DRIVER_FEATURES); |
if (!driver) |
565,11 → 517,11 |
} |
|
static void |
parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) |
parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
{ |
struct bdb_edp *edp; |
struct edp_power_seq *edp_pps; |
struct edp_link_params *edp_link_params; |
const struct bdb_edp *edp; |
const struct edp_power_seq *edp_pps; |
const struct edp_link_params *edp_link_params; |
|
edp = find_section(bdb, BDB_EDP); |
if (!edp) { |
662,8 → 614,64 |
edp_link_params->vswing); |
break; |
} |
|
if (bdb->version >= 173) { |
uint8_t vswing; |
|
/* Don't read from VBT if module parameter has valid value*/ |
if (i915.edp_vswing) { |
dev_priv->edp_low_vswing = i915.edp_vswing == 1; |
} else { |
vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; |
dev_priv->edp_low_vswing = vswing == 0; |
} |
} |
} |
|
static void |
parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
{ |
const struct bdb_psr *psr; |
const struct psr_table *psr_table; |
|
psr = find_section(bdb, BDB_PSR); |
if (!psr) { |
DRM_DEBUG_KMS("No PSR BDB found.\n"); |
return; |
} |
|
psr_table = &psr->psr_table[panel_type]; |
|
dev_priv->vbt.psr.full_link = psr_table->full_link; |
dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup; |
|
/* Allowed VBT values goes from 0 to 15 */ |
dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 : |
psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames; |
|
switch (psr_table->lines_to_wait) { |
case 0: |
dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT; |
break; |
case 1: |
dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT; |
break; |
case 2: |
dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT; |
break; |
case 3: |
dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT; |
break; |
default: |
DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n", |
psr_table->lines_to_wait); |
break; |
} |
|
dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time; |
dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time; |
} |
|
static u8 *goto_next_sequence(u8 *data, int *size) |
{ |
u16 len; |
732,13 → 740,14 |
} |
|
static void |
parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb) |
parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
{ |
struct bdb_mipi_config *start; |
struct bdb_mipi_sequence *sequence; |
struct mipi_config *config; |
struct mipi_pps_data *pps; |
u8 *data, *seq_data; |
const struct bdb_mipi_config *start; |
const struct bdb_mipi_sequence *sequence; |
const struct mipi_config *config; |
const struct mipi_pps_data *pps; |
u8 *data; |
const u8 *seq_data; |
int i, panel_id, seq_size; |
u16 block_size; |
|
794,6 → 803,12 |
return; |
} |
|
/* Fail gracefully for forward incompatible sequence block. */ |
if (sequence->version >= 3) { |
DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n"); |
return; |
} |
|
DRM_DEBUG_DRIVER("Found MIPI sequence block\n"); |
|
block_size = get_blocksize(sequence); |
881,8 → 896,19 |
memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); |
} |
|
static u8 translate_iboost(u8 val) |
{ |
static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */ |
|
if (val >= ARRAY_SIZE(mapping)) { |
DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val); |
return 0; |
} |
return mapping[val]; |
} |
|
static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
union child_device_config *it, *child = NULL; |
struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
889,16 → 915,16 |
uint8_t hdmi_level_shift; |
int i, j; |
bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; |
uint8_t aux_channel; |
uint8_t aux_channel, ddc_pin; |
/* Each DDI port can have more than one value on the "DVO Port" field, |
* so look for all the possible values for each port and abort if more |
* than one is found. */ |
int dvo_ports[][2] = { |
{DVO_PORT_HDMIA, DVO_PORT_DPA}, |
{DVO_PORT_HDMIB, DVO_PORT_DPB}, |
{DVO_PORT_HDMIC, DVO_PORT_DPC}, |
{DVO_PORT_HDMID, DVO_PORT_DPD}, |
{DVO_PORT_CRT, -1 /* Port E can only be DVO_PORT_CRT */ }, |
int dvo_ports[][3] = { |
{DVO_PORT_HDMIA, DVO_PORT_DPA, -1}, |
{DVO_PORT_HDMIB, DVO_PORT_DPB, -1}, |
{DVO_PORT_HDMIC, DVO_PORT_DPC, -1}, |
{DVO_PORT_HDMID, DVO_PORT_DPD, -1}, |
{DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE}, |
}; |
|
/* Find the child device to use, abort if more than one found. */ |
905,7 → 931,7 |
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
it = dev_priv->vbt.child_dev + i; |
|
for (j = 0; j < 2; j++) { |
for (j = 0; j < 3; j++) { |
if (dvo_ports[port][j] == -1) |
break; |
|
923,6 → 949,7 |
return; |
|
aux_channel = child->raw[25]; |
ddc_pin = child->common.ddc_pin; |
|
is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; |
is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; |
954,22 → 981,53 |
DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); |
|
if (is_dvi) { |
if (child->common.ddc_pin == 0x05 && port != PORT_B) |
if (port == PORT_E) { |
info->alternate_ddc_pin = ddc_pin; |
/* if DDIE share ddc pin with other port, then |
* dvi/hdmi couldn't exist on the shared port. |
* Otherwise they share the same ddc bin and system |
* couldn't communicate with them seperately. */ |
if (ddc_pin == DDC_PIN_B) { |
dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; |
dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; |
} else if (ddc_pin == DDC_PIN_C) { |
dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; |
dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; |
} else if (ddc_pin == DDC_PIN_D) { |
dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; |
dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; |
} |
} else if (ddc_pin == DDC_PIN_B && port != PORT_B) |
DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); |
if (child->common.ddc_pin == 0x04 && port != PORT_C) |
else if (ddc_pin == DDC_PIN_C && port != PORT_C) |
DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); |
if (child->common.ddc_pin == 0x06 && port != PORT_D) |
else if (ddc_pin == DDC_PIN_D && port != PORT_D) |
DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); |
} |
|
if (is_dp) { |
if (aux_channel == 0x40 && port != PORT_A) |
if (port == PORT_E) { |
info->alternate_aux_channel = aux_channel; |
/* if DDIE share aux channel with other port, then |
* DP couldn't exist on the shared port. Otherwise |
* they share the same aux channel and system |
* couldn't communicate with them seperately. */ |
if (aux_channel == DP_AUX_A) |
dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0; |
else if (aux_channel == DP_AUX_B) |
dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0; |
else if (aux_channel == DP_AUX_C) |
dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0; |
else if (aux_channel == DP_AUX_D) |
dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0; |
} |
else if (aux_channel == DP_AUX_A && port != PORT_A) |
DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); |
if (aux_channel == 0x10 && port != PORT_B) |
else if (aux_channel == DP_AUX_B && port != PORT_B) |
DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); |
if (aux_channel == 0x20 && port != PORT_C) |
else if (aux_channel == DP_AUX_C && port != PORT_C) |
DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); |
if (aux_channel == 0x30 && port != PORT_D) |
else if (aux_channel == DP_AUX_D && port != PORT_D) |
DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); |
} |
|
981,10 → 1039,20 |
hdmi_level_shift); |
info->hdmi_level_shift = hdmi_level_shift; |
} |
|
/* Parse the I_boost config for SKL and above */ |
if (bdb->version >= 196 && (child->common.flags_1 & IBOOST_ENABLE)) { |
info->dp_boost_level = translate_iboost(child->common.iboost_level & 0xF); |
DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n", |
port_name(port), info->dp_boost_level); |
info->hdmi_boost_level = translate_iboost(child->common.iboost_level >> 4); |
DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n", |
port_name(port), info->hdmi_boost_level); |
} |
} |
|
static void parse_ddi_ports(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct drm_device *dev = dev_priv->dev; |
enum port port; |
1004,11 → 1072,13 |
|
static void |
parse_device_mapping(struct drm_i915_private *dev_priv, |
struct bdb_header *bdb) |
const struct bdb_header *bdb) |
{ |
struct bdb_general_definitions *p_defs; |
union child_device_config *p_child, *child_dev_ptr; |
const struct bdb_general_definitions *p_defs; |
const union child_device_config *p_child; |
union child_device_config *child_dev_ptr; |
int i, child_device_num, count; |
u8 expected_size; |
u16 block_size; |
|
p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
1016,25 → 1086,40 |
DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
return; |
} |
/* judge whether the size of child device meets the requirements. |
* If the child device size obtained from general definition block |
* is different with sizeof(struct child_device_config), skip the |
* parsing of sdvo device info |
*/ |
if (p_defs->child_dev_size != sizeof(*p_child)) { |
/* different child dev size . Ignore it */ |
DRM_DEBUG_KMS("different child size is found. Invalid.\n"); |
if (bdb->version < 195) { |
expected_size = sizeof(struct old_child_dev_config); |
} else if (bdb->version == 195) { |
expected_size = 37; |
} else if (bdb->version <= 197) { |
expected_size = 38; |
} else { |
expected_size = 38; |
BUILD_BUG_ON(sizeof(*p_child) < 38); |
DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n", |
bdb->version, expected_size); |
} |
|
/* The legacy sized child device config is the minimum we need. */ |
if (p_defs->child_dev_size < sizeof(struct old_child_dev_config)) { |
DRM_ERROR("Child device config size %u is too small.\n", |
p_defs->child_dev_size); |
return; |
} |
|
/* Flag an error for unexpected size, but continue anyway. */ |
if (p_defs->child_dev_size != expected_size) |
DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n", |
p_defs->child_dev_size, expected_size, bdb->version); |
|
/* get the block size of general definitions */ |
block_size = get_blocksize(p_defs); |
/* get the number of child device */ |
child_device_num = (block_size - sizeof(*p_defs)) / |
sizeof(*p_child); |
p_defs->child_dev_size; |
count = 0; |
/* get the number of child device that is present */ |
for (i = 0; i < child_device_num; i++) { |
p_child = &(p_defs->devices[i]); |
p_child = child_device_ptr(p_defs, i); |
if (!p_child->common.device_type) { |
/* skip the device block if device type is invalid */ |
continue; |
1054,7 → 1139,7 |
dev_priv->vbt.child_dev_num = count; |
count = 0; |
for (i = 0; i < child_device_num; i++) { |
p_child = &(p_defs->devices[i]); |
p_child = child_device_ptr(p_defs, i); |
if (!p_child->common.device_type) { |
/* skip the device block if device type is invalid */ |
continue; |
1070,8 → 1155,14 |
|
child_dev_ptr = dev_priv->vbt.child_dev + count; |
count++; |
memcpy((void *)child_dev_ptr, (void *)p_child, |
sizeof(*p_child)); |
|
/* |
* Copy as much as we know (sizeof) and is available |
* (child_dev_size) of the child device. Accessing the data must |
* depend on VBT version. |
*/ |
memcpy(child_dev_ptr, p_child, |
min_t(size_t, p_defs->child_dev_size, sizeof(*p_child))); |
} |
return; |
} |
1082,7 → 1173,7 |
struct drm_device *dev = dev_priv->dev; |
enum port port; |
|
dev_priv->vbt.crt_ddc_pin = GMBUS_PORT_VGADDC; |
dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; |
|
/* Default to having backlight */ |
dev_priv->vbt.backlight.present = true; |
1140,19 → 1231,15 |
{ } |
}; |
|
static struct bdb_header *validate_vbt(char *base, size_t size, |
struct vbt_header *vbt, |
static const struct bdb_header *validate_vbt(const void *base, |
size_t size, |
const void *_vbt, |
const char *source) |
{ |
size_t offset; |
struct bdb_header *bdb; |
size_t offset = _vbt - base; |
const struct vbt_header *vbt = _vbt; |
const struct bdb_header *bdb; |
|
if (vbt == NULL) { |
DRM_DEBUG_DRIVER("VBT signature missing\n"); |
return NULL; |
} |
|
offset = (char *)vbt - base; |
if (offset + sizeof(struct vbt_header) > size) { |
DRM_DEBUG_DRIVER("VBT header incomplete\n"); |
return NULL; |
1169,7 → 1256,7 |
return NULL; |
} |
|
bdb = (struct bdb_header *)(base + offset); |
bdb = base + offset; |
if (offset + bdb->bdb_size > size) { |
DRM_DEBUG_DRIVER("BDB incomplete\n"); |
return NULL; |
1180,6 → 1267,30 |
return bdb; |
} |
|
static const struct bdb_header *find_vbt(void __iomem *bios, size_t size) |
{ |
const struct bdb_header *bdb = NULL; |
size_t i; |
|
/* Scour memory looking for the VBT signature. */ |
for (i = 0; i + 4 < size; i++) { |
if (ioread32(bios + i) == *((const u32 *) "$VBT")) { |
/* |
* This is the one place where we explicitly discard the |
* address space (__iomem) of the BIOS/VBT. From now on |
* everything is based on 'base', and treated as regular |
* memory. |
*/ |
void *_bios = (void __force *) bios; |
|
bdb = validate_vbt(_bios, size, _bios + i, "PCI ROM"); |
break; |
} |
} |
|
return bdb; |
} |
|
/** |
* intel_parse_bios - find VBT and initialize settings from the BIOS |
* @dev: DRM device |
1194,7 → 1305,7 |
{ |
struct drm_i915_private *dev_priv = dev->dev_private; |
struct pci_dev *pdev = dev->pdev; |
struct bdb_header *bdb = NULL; |
const struct bdb_header *bdb = NULL; |
u8 __iomem *bios = NULL; |
|
if (HAS_PCH_NOP(dev)) |
1204,27 → 1315,17 |
|
/* XXX Should this validation be moved to intel_opregion.c? */ |
if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) |
bdb = validate_vbt((char *)dev_priv->opregion.header, OPREGION_SIZE, |
(struct vbt_header *)dev_priv->opregion.vbt, |
"OpRegion"); |
bdb = validate_vbt(dev_priv->opregion.header, OPREGION_SIZE, |
dev_priv->opregion.vbt, "OpRegion"); |
|
if (bdb == NULL) { |
size_t i, size; |
size_t size; |
|
bios = pci_map_rom(pdev, &size); |
if (!bios) |
return -1; |
|
/* Scour memory looking for the VBT signature */ |
for (i = 0; i + 4 < size; i++) { |
if (memcmp(bios + i, "$VBT", 4) == 0) { |
bdb = validate_vbt(bios, size, |
(struct vbt_header *)(bios + i), |
"PCI ROM"); |
break; |
} |
} |
|
bdb = find_vbt(bios, size); |
if (!bdb) { |
pci_unmap_rom(pdev, bios); |
return -1; |
1241,6 → 1342,7 |
parse_device_mapping(dev_priv, bdb); |
parse_driver_features(dev_priv, bdb); |
parse_edp(dev_priv, bdb); |
parse_psr(dev_priv, bdb); |
parse_mipi(dev_priv, bdb); |
parse_ddi_ports(dev_priv, bdb); |
|
1249,21 → 1351,3 |
|
return 0; |
} |
|
/* Ensure that vital registers have been initialised, even if the BIOS |
* is absent or just failing to do its job. |
*/ |
void intel_setup_bios(struct drm_device *dev) |
{ |
struct drm_i915_private *dev_priv = dev->dev_private; |
|
/* Set the Panel Power On/Off timings if uninitialized. */ |
if (!HAS_PCH_SPLIT(dev) && |
I915_READ(PP_ON_DELAYS) == 0 && I915_READ(PP_OFF_DELAYS) == 0) { |
/* Set T2 to 40ms and T5 to 200ms */ |
I915_WRITE(PP_ON_DELAYS, 0x019007d0); |
|
/* Set T3 to 35ms and Tx to 200ms */ |
I915_WRITE(PP_OFF_DELAYS, 0x015e07d0); |
} |
} |