diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dsi_vbt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c index 6b4a27372c82..dd24aef925f2 100644 --- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c +++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c @@ -30,6 +30,7 @@ #include <linux/pinctrl/consumer.h> #include <linux/pinctrl/machine.h> #include <linux/slab.h> +#include <linux/string_helpers.h> #include <asm/unaligned.h> @@ -124,9 +125,25 @@ struct i2c_adapter_lookup { #define ICL_GPIO_DDPA_CTRLCLK_2 8 #define ICL_GPIO_DDPA_CTRLDATA_2 9 -static enum port intel_dsi_seq_port_to_port(u8 port) +static enum port intel_dsi_seq_port_to_port(struct intel_dsi *intel_dsi, + u8 seq_port) { - return port ? PORT_C : PORT_A; + /* + * If single link DSI is being used on any port, the VBT sequence block + * send packet apparently always has 0 for the port. Just use the port + * we have configured, and ignore the sequence block port. + */ + if (hweight8(intel_dsi->ports) == 1) + return ffs(intel_dsi->ports) - 1; + + if (seq_port) { + if (intel_dsi->ports & PORT_B) + return PORT_B; + else if (intel_dsi->ports & PORT_C) + return PORT_C; + } + + return PORT_A; } static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, @@ -148,15 +165,10 @@ static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, seq_port = (flags >> MIPI_PORT_SHIFT) & 3; - /* For DSI single link on Port A & C, the seq_port value which is - * parsed from Sequence Block#53 of VBT has been set to 0 - * Now, read/write of packets for the DSI single link on Port A and - * Port C will based on the DVO port from VBT block 2. - */ - if (intel_dsi->ports == (1 << PORT_C)) - port = PORT_C; - else - port = intel_dsi_seq_port_to_port(seq_port); + port = intel_dsi_seq_port_to_port(intel_dsi, seq_port); + + if (drm_WARN_ON(&dev_priv->drm, !intel_dsi->dsi_hosts[port])) + goto out; dsi_device = intel_dsi->dsi_hosts[port]->device; if (!dsi_device) { @@ -686,9 +698,9 @@ void intel_dsi_log_params(struct intel_dsi *intel_dsi) intel_dsi->burst_mode_ratio); drm_dbg_kms(&i915->drm, "Reset timer %d\n", intel_dsi->rst_timer_val); drm_dbg_kms(&i915->drm, "Eot %s\n", - enableddisabled(intel_dsi->eotp_pkt)); + str_enabled_disabled(intel_dsi->eotp_pkt)); drm_dbg_kms(&i915->drm, "Clockstop %s\n", - enableddisabled(!intel_dsi->clock_stop)); + str_enabled_disabled(!intel_dsi->clock_stop)); drm_dbg_kms(&i915->drm, "Mode %s\n", intel_dsi->operation_mode ? "command" : "video"); if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) @@ -715,7 +727,7 @@ void intel_dsi_log_params(struct intel_dsi *intel_dsi) drm_dbg_kms(&i915->drm, "HS to LP Clock Count 0x%x\n", intel_dsi->clk_hs_to_lp_count); drm_dbg_kms(&i915->drm, "BTA %s\n", - enableddisabled(!(intel_dsi->video_frmt_cfg_bits & DISABLE_VIDEO_BTA))); + str_enabled_disabled(!(intel_dsi->video_frmt_cfg_bits & DISABLE_VIDEO_BTA))); } bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id) |