diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/gma/Kconfig | 6 | ||||
| -rw-r--r-- | src/drivers/intel/gma/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/intel/gma/display.c | 119 | ||||
| -rw-r--r-- | src/drivers/intel/gma/drm_dp_helper.c | 119 | ||||
| -rw-r--r-- | src/drivers/intel/gma/i915.h | 200 | ||||
| -rw-r--r-- | src/drivers/intel/gma/intel_ddi.c | 156 | ||||
| -rw-r--r-- | src/drivers/intel/gma/intel_dp.c | 1622 |
7 files changed, 0 insertions, 2223 deletions
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig index df45083b5c..1e60a425da 100644 --- a/src/drivers/intel/gma/Kconfig +++ b/src/drivers/intel/gma/Kconfig @@ -14,12 +14,6 @@ ## GNU General Public License for more details. ## -config INTEL_DP - bool - default n - help - helper functions for intel display port operations - config INTEL_DDI bool default n diff --git a/src/drivers/intel/gma/Makefile.inc b/src/drivers/intel/gma/Makefile.inc index d4d6c08842..502ae08654 100644 --- a/src/drivers/intel/gma/Makefile.inc +++ b/src/drivers/intel/gma/Makefile.inc @@ -13,7 +13,6 @@ ## GNU General Public License for more details. ## -ramstage-$(CONFIG_INTEL_DP) += intel_dp.c drm_dp_helper.c display.c ramstage-$(CONFIG_INTEL_DDI) += intel_ddi.c ramstage-$(CONFIG_INTEL_EDID) += edid.c vbt.c ifeq ($(CONFIG_VGA_ROM_RUN),y) diff --git a/src/drivers/intel/gma/display.c b/src/drivers/intel/gma/display.c deleted file mode 100644 index afcec91d4c..0000000000 --- a/src/drivers/intel/gma/display.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copyright 2013 Google Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - * Authors: - * Keith Packard <keithp@keithp.com> - * - */ - -/* This code was created by the coccinnelle filters in the i915tool, - * with some final hand filtering. - */ - -#include <console/console.h> -#include <stdint.h> -#include <delay.h> -#include <drivers/intel/gma/i915.h> -#include <string.h> - -void compute_display_params(struct intel_dp *dp) -{ - struct edid *edid = &(dp->edid); - struct edid_mode *mode = &edid->mode; - - /* step 1: get the constants in the dp struct set up. */ - dp->lane_count = dp->dpcd[DP_MAX_LANE_COUNT]&DP_LANE_COUNT_MASK; - - dp->link_bw = dp->dpcd[DP_MAX_LINK_RATE]; - dp->clock = intel_dp_bw_code_to_link_rate(dp->link_bw); - dp->edid.link_clock = intel_dp_bw_code_to_link_rate(dp->link_bw); - - /* step 2. Do some computation of other stuff. */ - dp->bytes_per_pixel = dp->pipe_bits_per_pixel/8; - - dp->stride = edid->bytes_per_line; - - dp->htotal = (mode->ha - 1) | ((mode->ha + mode->hbl - 1) << 16); - - dp->hblank = (mode->ha - 1) | ((mode->ha + mode->hbl - 1) << 16); - - dp->hsync = (mode->ha + mode->hso - 1) | - ((mode->ha + mode->hso + mode->hspw - 1) << 16); - - dp->vtotal = (mode->va - 1) | ((mode->va + mode->vbl - 1) << 16); - - dp->vblank = (mode->va - 1) | ((mode->va + mode->vbl - 1) << 16); - - dp->vsync = (mode->va + mode->vso - 1) | - ((mode->va + mode->vso + mode->vspw - 1) << 16); - - /* PIPEASRC is wid-1 x ht-1 */ - dp->pipesrc = (mode->ha-1)<<16 | (mode->va-1); - - dp->pfa_pos = 0; - - dp->pfa_ctl = PF_ENABLE | PF_FILTER_MED_3x3; - /* IVB hack */ - if (dp->gen == 6) - dp->pfa_ctl |= PF_PIPE_SEL_IVB(dp->pipe); - - dp->pfa_sz = (mode->ha << 16) | (mode->va); - - /* step 3. Call the linux code we pulled in. */ - dp->flags = intel_ddi_calc_transcoder_flags(edid->panel_bits_per_pixel, - dp->port, - dp->pipe, - dp->type, - dp->lane_count, - dp->pfa_sz, - mode->phsync == '+'?1:0, - mode->pvsync == '+'?1:0); - - dp->transcoder = intel_ddi_get_transcoder(dp->port, - dp->pipe); - - intel_dp_compute_m_n(edid->panel_bits_per_pixel, - dp->lane_count, - dp->edid.mode.pixel_clock, - dp->edid.link_clock, - &dp->m_n); - - printk(BIOS_SPEW, "dp->lane_count = 0x%08x\n",dp->lane_count); - printk(BIOS_SPEW, "dp->stride = 0x%08x\n",dp->stride); - printk(BIOS_SPEW, "dp->htotal = 0x%08x\n", dp->htotal); - printk(BIOS_SPEW, "dp->hblank = 0x%08x\n", dp->hblank); - printk(BIOS_SPEW, "dp->hsync = 0x%08x\n", dp->hsync); - printk(BIOS_SPEW, "dp->vtotal = 0x%08x\n", dp->vtotal); - printk(BIOS_SPEW, "dp->vblank = 0x%08x\n", dp->vblank); - printk(BIOS_SPEW, "dp->vsync = 0x%08x\n", dp->vsync); - printk(BIOS_SPEW, "dp->pipesrc = 0x%08x\n", dp->pipesrc); - printk(BIOS_SPEW, "dp->pfa_pos = 0x%08x\n", dp->pfa_pos); - printk(BIOS_SPEW, "dp->pfa_ctl = 0x%08x\n", dp->pfa_ctl); - printk(BIOS_SPEW, "dp->pfa_sz = 0x%08x\n", dp->pfa_sz); - printk(BIOS_SPEW, "dp->link_m = 0x%08x\n", dp->m_n.link_m); - printk(BIOS_SPEW, "dp->link_n = 0x%08x\n", dp->m_n.link_n); - printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", - TU_SIZE(dp->m_n.tu) | dp->m_n.gmch_m); - printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", dp->m_n.gmch_m); - printk(BIOS_SPEW, "0x6f034 = 0x%08x\n", dp->m_n.gmch_n); - printk(BIOS_SPEW, "dp->flags = 0x%08x\n", dp->flags); -} diff --git a/src/drivers/intel/gma/drm_dp_helper.c b/src/drivers/intel/gma/drm_dp_helper.c deleted file mode 100644 index 66072263f4..0000000000 --- a/src/drivers/intel/gma/drm_dp_helper.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copyright 2013 Google Inc. - * Copyright © 2009 Keith Packard - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting documentation, and - * that the name of the copyright holders not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. The copyright holders make no representations - * about the suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE - * OF THIS SOFTWARE. - */ - -#include <console/console.h> -#include <stdint.h> -#include <delay.h> -#include <drivers/intel/gma/i915.h> -#include <string.h> - -#include <edid.h> - -/* reduced a lot for coreboot. */ -/** - * DOC: dp helpers - * - * These functions contain some common logic and helpers at various - * abstraction levels to deal with Display Port sink devices and - * related things like DP aux channel transfers, EDID reading over DP - * aux channels, decoding certain DPCD blocks, ... - */ - - -/* Helpers for DP link training */ -static u8 dp_link_status(u8 link_status[DP_LINK_STATUS_SIZE], int r) -{ - printk(BIOS_SPEW, "%s: %d, %d, %d\n", __func__, - r, r - DP_LANE0_1_STATUS, - link_status[r - DP_LANE0_1_STATUS]); - return link_status[r - DP_LANE0_1_STATUS]; -} - -static u8 dp_get_lane_status(u8 link_status[DP_LINK_STATUS_SIZE], - int lane) -{ - int i = DP_LANE0_1_STATUS + (lane >> 1); - int s = (lane & 1) * 4; - u8 l = dp_link_status(link_status, i); - return (l >> s) & 0xf; -} - -int drm_dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE], - int lane_count) -{ - u8 lane_align; - u8 lane_status; - int lane; - - lane_align = dp_link_status(link_status, - DP_LANE_ALIGN_STATUS_UPDATED); - if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) - return 0; - for (lane = 0; lane < lane_count; lane++) { - lane_status = dp_get_lane_status(link_status, lane); - if ((lane_status & DP_CHANNEL_EQ_BITS) != DP_CHANNEL_EQ_BITS) - return 0; - } - return 1; -} - -int drm_dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE], - int lane_count) -{ - int lane; - u8 lane_status; - - for (lane = 0; lane < lane_count; lane++) { - lane_status = dp_get_lane_status(link_status, lane); - if ((lane_status & DP_LANE_CR_DONE) == 0) - return 0; - } - return 1; -} - -u8 drm_dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE], - int lane) -{ - int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); - int s = ((lane & 1) ? - DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : - DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT); - u8 l = dp_link_status(link_status, i); - - printk(BIOS_SPEW, "%s: i %d s %d l %d return %d\n", - __func__, i, s, l, - ((l >> s) & 0x3) << DP_TRAIN_VOLTAGE_SWING_SHIFT); - return ((l >> s) & 0x3) << DP_TRAIN_VOLTAGE_SWING_SHIFT; -} - -u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], - int lane) -{ - int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); - int s = ((lane & 1) ? - DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT : - DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT); - u8 l = dp_link_status(link_status, i); - - return ((l >> s) & 0x3) << DP_TRAIN_PRE_EMPHASIS_SHIFT; -} diff --git a/src/drivers/intel/gma/i915.h b/src/drivers/intel/gma/i915.h index d9bb940fa4..9a2acdb96b 100644 --- a/src/drivers/intel/gma/i915.h +++ b/src/drivers/intel/gma/i915.h @@ -81,201 +81,7 @@ enum { unsigned long io_i915_read32(unsigned long addr); void io_i915_write32(unsigned long val, unsigned long addr); -/* - * To communicate to and control the extracted-from-kernel code, - * we need this struct. It has a counterpart in the ARM code, so - * there is a precedent. - */ - -#define DP_RECEIVER_CAP_SIZE 0xf -#define DP_LINK_STATUS_SIZE 6 -#define DP_LINK_CHECK_TIMEOUT (10 * 1000) - -#define DP_LINK_CONFIGURATION_SIZE 9 - -struct intel_dp_m_n { - uint32_t tu; - uint32_t gmch_m; - uint32_t gmch_n; - uint32_t link_m; - uint32_t link_n; -}; - -struct intel_dp { - int gen; // 6 for link, 7 for wtm2 - int has_pch_split; // 1 for link and wtm2 - int has_pch_cpt; // 1 for everything we know about. - int is_haswell; - /* output register offset in MMIO space. Usually DP_A */ - u32 output_reg; - /* The initial value of the DP register. - * Mainboards can set this to a non-zero - * value in the case that there are undetectable - * but essential parameters. - */ - u32 DP; - uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]; - u32 color_range; - /* these paramaters are determined after reading the DPCD */ - int dpms_mode; - uint8_t link_bw; - uint8_t lane_count; - /* This data is read from the panel via the AUX channel.*/ - uint8_t dpcd[DP_RECEIVER_CAP_SIZE]; - int type; - int edp; - int is_pch_edp; - /* state related to training. */ - uint8_t train_set[4]; - /* Determined from EDID or coreboot hard-sets. */ - int panel_power_up_delay; - int panel_power_down_delay; - int panel_power_cycle_delay; - int backlight_on_delay; - int backlight_off_delay; - int want_panel_vdd; - u32 clock; - int port; - int pipe; - int plane; - int pipe_bits_per_pixel; - /* i2c on aux is ... interesting. - * Before you do an i2c cycle, you need to set the address. - * This requires we remember it from one moment to the next. - * Remember it here. - */ - u16 address; - /* timing parameters for aux channel IO. They used to compute these on - * each and every entry to the functions, which is kind of stupid, and it had - * errors anyway. - * note: you can get these from watching YABEL output. E.g.: - * you see an outb of 0x802300e1 to 64010. the 3 is the precharge - * and the e1 is the clock divider. - */ - u32 aux_clock_divider; - u32 precharge; - /* EDID, raw and processed */ - u8 rawedid[256]; - int edidlen; - struct edid edid; - /* computed values needed for "i915" registers */ - int bytes_per_pixel; - u32 htotal; - u32 hblank; - u32 hsync; - u32 vtotal; - u32 vblank; - u32 vsync; - u32 pfa_sz; - u32 pfa_pos; - u32 pfa_ctl; - u32 pipesrc; - u32 stride; - struct intel_dp_m_n m_n; - u32 flags; - u32 transcoder; - /* parameters computed by the early startup, to be used - * in the GMA code. - */ - u8 *graphics; - /* physical address, not to be used directly. */ - u64 physbase; -}; - -/* we may yet need these. */ -void intel_dp_mode_set(struct intel_dp *intel_dp); -void intel_dp_start_link_train(struct intel_dp *intel_dp); - -int intel_dp_i2c_init(struct intel_dp *intel_dp); -int intel_dp_i2c_aux_ch(struct intel_dp *intel_dp, - int mode, uint8_t write_byte, uint8_t *read_byte); - -int intel_dp_get_dpcd(struct intel_dp *intel_dp); -struct edid *intel_dp_get_edid(struct intel_dp *intel_dp); - -void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode); -void ironlake_edp_pll_on(void); -void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp); -void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, int sync); -int intel_dp_get_max_downspread(struct intel_dp *intel_dp, u8 *max_downspread); -void ironlake_edp_panel_on(struct intel_dp *intel_dp); -void ironlake_edp_backlight_on(struct intel_dp *intel_dp); -/* needed only on haswell. */ -void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, int port); -int intel_dp_aux_ch(struct intel_dp *intel_dp, - uint8_t *send, int send_bytes, - uint8_t *recv, int recv_size); -void unpack_aux(u32 src, uint8_t *dst, int dst_bytes); -int intel_channel_eq_ok(struct intel_dp *intel_dp, - uint8_t link_status[DP_LINK_STATUS_SIZE]); -void ironlake_edp_panel_off(struct intel_dp *intel_dp); -void ironlake_edp_backlight_off(struct intel_dp *intel_dp); - -/* drm_dp_helper.c */ -int drm_dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE], - int lane_count); -int drm_dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE], - int lane_count); -u8 drm_dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE], - int lane); -u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], - int lane); - - -void intel_dp_wait_reg(unsigned long addr, - unsigned long val); - -void intel_dp_wait_panel_power_control(unsigned long val); - -void intel_dp_compute_m_n(unsigned int bits_per_pixel, - unsigned int nlanes, - unsigned int pixel_clock, - unsigned int link_clock, - struct intel_dp_m_n *m_n); - -u32 intel_ddi_calc_transcoder_flags(u32 pipe_bpp, - enum port port, - enum pipe pipe, - int type, - int lane_count, - int pf_sz, - u8 phsync, - u8 pvsync); - -enum transcoder intel_ddi_get_transcoder(enum port port, - enum pipe pipe); - -void intel_dp_set_m_n_regs(struct intel_dp *intel_dp); -int intel_dp_bw_code_to_link_rate(u8 link_bw); -void intel_dp_set_resolution(struct intel_dp *intel_dp); - -int intel_dp_i2c_write(struct intel_dp *intel_dp, - u8 val); - -int intel_dp_i2c_read(struct intel_dp *intel_dp, - u8 *val); - -int intel_dp_set_bw(struct intel_dp *intel_dp); -int intel_dp_set_lane_count(struct intel_dp *intel_dp); -int intel_dp_set_training_lane0(struct intel_dp *intel_dp, - u8 val); -int intel_dp_set_training_pattern(struct intel_dp *intel_dp, - u8 pat); - -int intel_dp_get_link_status(struct intel_dp *intel_dp, - uint8_t link_status[DP_LINK_STATUS_SIZE]); - -int intel_dp_get_training_pattern(struct intel_dp *intel_dp, - u8 *recv); - -int intel_dp_get_lane_count(struct intel_dp *intel_dp, - u8 *recv); - -int intel_dp_get_lane_align_status(struct intel_dp *intel_dp, - u8 *recv); - void intel_prepare_ddi(void); -void intel_ddi_set_pipe_settings(struct intel_dp *intel_dp); int gtt_poll(u32 reg, u32 mask, u32 value); void gtt_write(u32 reg, u32 data); @@ -295,14 +101,8 @@ drivers_intel_gma_displays_ssdt_generate(const struct i915_gpu_controller_info * const struct i915_gpu_controller_info * intel_gma_get_controller_info(void); -int i915lightup(unsigned int physbase, unsigned int mmio, - unsigned int gfx, unsigned int init_fb); -int panel_lightup(struct intel_dp *dp, unsigned int init_fb); void *igd_make_opregion(void); -/* display.c */ -void compute_display_params(struct intel_dp *dp); - /* vbt.c */ struct device; void diff --git a/src/drivers/intel/gma/intel_ddi.c b/src/drivers/intel/gma/intel_ddi.c index 9127060ece..c01aef45c9 100644 --- a/src/drivers/intel/gma/intel_ddi.c +++ b/src/drivers/intel/gma/intel_ddi.c @@ -114,159 +114,3 @@ void intel_prepare_ddi(void) intel_prepare_ddi_buffers(PORT_E, use_fdi); } - -static void intel_wait_ddi_buf_idle(int port) -{ - uint32_t reg = DDI_BUF_CTL(port); - int i; - - for (i = 0; i < 8; i++) { - udelay(1); - if (gtt_read(reg) & DDI_BUF_IS_IDLE){ - printk(BIOS_SPEW, "%s: buf is idle (success)\n", __func__); - return; - } - } - printk(BIOS_ERR, "Timeout waiting for DDI BUF %d idle bit\n", port); -} - - -void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, int port) -{ - int wait = 0; - uint32_t val; - - if (gtt_read(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) { - val = gtt_read(DDI_BUF_CTL(port)); - if (val & DDI_BUF_CTL_ENABLE) { - val &= ~DDI_BUF_CTL_ENABLE; - gtt_write(val,DDI_BUF_CTL(port)); - wait = 1; - } - - val = gtt_read(DP_TP_CTL(port)); - val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); - val |= DP_TP_CTL_LINK_TRAIN_PAT1; - gtt_write(val,DP_TP_CTL(port)); - //POSTING_READ(DP_TP_CTL(port)); - - if (wait) - intel_wait_ddi_buf_idle(port); - } - - val = DP_TP_CTL_ENABLE | DP_TP_CTL_MODE_SST | - DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE; - if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) - val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; - gtt_write(val,DP_TP_CTL(port)); - //POSTING_READ(DP_TP_CTL(port)); - - intel_dp->DP |= DDI_BUF_CTL_ENABLE; - gtt_write(intel_dp->DP,DDI_BUF_CTL(port)); - //POSTING_READ(DDI_BUF_CTL(port)); - - udelay(600); -} - -u32 intel_ddi_calc_transcoder_flags(u32 pipe_bpp, - enum port port, - enum pipe pipe, - int type, - int lane_count, - int pf_sz, - u8 phsync, - u8 pvsync) -{ - u32 temp; - - temp = TRANS_DDI_FUNC_ENABLE; - temp |= TRANS_DDI_SELECT_PORT(port); - - switch (pipe_bpp) { - case 18: - temp |= TRANS_DDI_BPC_6; - break; - case 24: - temp |= TRANS_DDI_BPC_8; - break; - case 30: - temp |= TRANS_DDI_BPC_10; - break; - case 36: - temp |= TRANS_DDI_BPC_12; - break; - default: - printk(BIOS_ERR, "Invalid pipe_bpp: %d, *** Initialization will not succeed ***\n", pipe_bpp); - } - - if (port == PORT_A) { - switch (pipe) { - case PIPE_A: - if (pf_sz) - temp |= TRANS_DDI_EDP_INPUT_A_ONOFF; - else - temp |= TRANS_DDI_EDP_INPUT_A_ON; - break; - case PIPE_B: - temp |= TRANS_DDI_EDP_INPUT_B_ONOFF; - break; - case PIPE_C: - temp |= TRANS_DDI_EDP_INPUT_C_ONOFF; - break; - default: - printk(BIOS_ERR, "Invalid pipe %d\n", pipe); - } - } - - if (phsync) - temp |= TRANS_DDI_PHSYNC; - - if (pvsync) - temp |= TRANS_DDI_PVSYNC; - - if (type == INTEL_OUTPUT_HDMI) { - /* Need to understand when to set TRANS_DDI_MODE_SELECT_HDMI / TRANS_DDI_MODE_SELECT_DVI */ - } else if (type == INTEL_OUTPUT_ANALOG) { - /* Set TRANS_DDI_MODE_SELECT_FDI with lane_count */ - } else if (type == INTEL_OUTPUT_DISPLAYPORT || - type == INTEL_OUTPUT_EDP) { - temp |= TRANS_DDI_MODE_SELECT_DP_SST; - - temp |= DDI_PORT_WIDTH(lane_count); - } else { - printk(BIOS_ERR, "Invalid type %d for pipe\n", type); - } - - return temp; -} - -enum transcoder intel_ddi_get_transcoder(enum port port, - enum pipe pipe) -{ - if (port == PORT_A) - return TRANSCODER_EDP; - return (enum transcoder)pipe; -} - -void intel_ddi_set_pipe_settings(struct intel_dp *intel_dp) -{ - u32 val = TRANS_MSA_SYNC_CLK; - - switch (intel_dp->pipe_bits_per_pixel) { - case 18: - val |= TRANS_MSA_6_BPC; - break; - case 24: - val |= TRANS_MSA_8_BPC; - break; - case 30: - val |= TRANS_MSA_10_BPC; - break; - case 36: - val |= TRANS_MSA_12_BPC; - break; - default: - printk(BIOS_ERR, "Invalid bpp settings %d\n", intel_dp->pipe_bits_per_pixel); - } - gtt_write(TRANS_MSA_MISC(intel_dp->transcoder),val); -} diff --git a/src/drivers/intel/gma/intel_dp.c b/src/drivers/intel/gma/intel_dp.c deleted file mode 100644 index 56ee73b7e2..0000000000 --- a/src/drivers/intel/gma/intel_dp.c +++ /dev/null @@ -1,1622 +0,0 @@ -/* - * Copyright 2013 Google Inc. - * Copyright © 2008 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - * Authors: - * Keith Packard <keithp@keithp.com> - * - */ - -/* This code was created by the coccinnelle filters in the i915tool, - * with some final hand filtering. - */ - -#include <console/console.h> -#include <stdint.h> -#include <delay.h> -#include <drivers/intel/gma/i915.h> -#include <string.h> - -/** - * is_edp - is the given port attached to an eDP panel (either CPU or PCH) - * @param intel_dp: DP struct - * - * If a CPU or PCH DP output is attached to an eDP panel, this function - * will return 1, and 0 otherwise. - */ -static int is_edp(struct intel_dp *intel_dp) -{ - return intel_dp->type == INTEL_OUTPUT_EDP; -} - -/** - * is_pch_edp - is the port on the PCH and attached to an eDP panel? - * @param intel_dp: DP struct - * - * Returns 1 if the given DP struct corresponds to a PCH DP port attached - * to an eDP panel, 0 otherwise. Helpful for determining whether we - * may need FDI resources for a given DP output or not. - */ -static int is_pch_edp(struct intel_dp *intel_dp) -{ - return intel_dp->is_pch_edp; -} - -/** - * is_cpu_edp - is the port on the CPU and attached to an eDP panel? - * @param intel_dp: DP struct - * - * Returns 1 if the given DP struct corresponds to a CPU eDP port. - */ -static int is_cpu_edp(struct intel_dp *intel_dp) -{ - return is_edp(intel_dp) && !is_pch_edp(intel_dp); -} - -static uint32_t -pack_aux(uint8_t *src, int src_bytes) -{ - int i; - uint32_t v = 0; - - if (src_bytes > 4) - src_bytes = 4; - for (i = 0; i < src_bytes; i++) - v |= ((uint32_t) src[i]) << ((3-i) * 8); - return v; -} - -void -unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) -{ - int i; - if (dst_bytes > 4) - dst_bytes = 4; - for (i = 0; i < dst_bytes; i++) - dst[i] = src >> ((3-i) * 8); -} - -static int ironlake_edp_have_panel_power(struct intel_dp *intel_dp) -{ - - return (gtt_read(PCH_PP_STATUS) & PP_ON) != 0; -} - -static int ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp) -{ - return (gtt_read(PCH_PP_CONTROL) & EDP_FORCE_VDD) != 0; -} - -int -intel_dp_aux_ch(struct intel_dp *intel_dp, - uint8_t *send, int send_bytes, - uint8_t *recv, int recv_size) -{ - uint32_t output_reg = intel_dp->output_reg; - uint32_t ch_ctl = output_reg + 0x10; - uint32_t ch_data = ch_ctl + 4; - int i; - int recv_bytes; - uint32_t status; - int try; - - /* Try to wait for any previous AUX channel activity */ - for (try = 0; try < 3; try++) { - status = gtt_read(ch_ctl); - if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) - break; - mdelay(1); - } - - if (try == 3) { - if (1) { - status = gtt_read(ch_ctl); - printk(BIOS_ERR, - "dp_aux_ch not started status 0x%08x\n", - status); - } - return -1; - } - - /* Must try at least 3 times according to DP spec */ - for (try = 0; try < 5; try++) { - /* Load the send data into the aux channel data registers */ - for (i = 0; i < send_bytes; i += 4){ - u32 val, addr; - val = pack_aux(send + i, send_bytes - i); - addr = ch_data + i; - gtt_write(addr,val); - } - - /* Send the command and wait for it to complete */ - gtt_write(ch_ctl, DP_AUX_CH_CTL_SEND_BUSY | - DP_AUX_CH_CTL_TIME_OUT_400us | - (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | - (intel_dp->precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | - (intel_dp->aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | - DP_AUX_CH_CTL_DONE | - DP_AUX_CH_CTL_TIME_OUT_ERROR | - DP_AUX_CH_CTL_RECEIVE_ERROR); - for (;;) { - status = gtt_read(ch_ctl); - if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) - break; - udelay(100); - } - - /* Clear done status and any errors */ - gtt_write(ch_ctl, status | - DP_AUX_CH_CTL_DONE | - DP_AUX_CH_CTL_TIME_OUT_ERROR | - DP_AUX_CH_CTL_RECEIVE_ERROR); - - if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | - DP_AUX_CH_CTL_RECEIVE_ERROR)) - continue; - if (status & DP_AUX_CH_CTL_DONE) - break; - } - - if ((status & DP_AUX_CH_CTL_DONE) == 0) { - printk(BIOS_ERR, "dp_aux_ch not done status 0x%08x\n", status); - return -1; - } - - /* Check for timeout or receive error. - * Timeouts occur when the sink is not connected - */ - if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { - printk(BIOS_ERR, - "dp_aux_ch receive error status 0x%08x\n", status); - return -1; - } - - /* Timeouts occur when the device isn't connected, so they're - * "normal" -- don't fill the kernel log with these */ - if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { - printk(BIOS_ERR, "dp_aux_ch timeout status 0x%08x\n", status); - return -1; - } - - /* Unload any bytes sent back from the other side */ - recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> - DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); - if (recv_bytes > recv_size) - recv_bytes = recv_size; - - for (i = 0; i < recv_bytes; i += 4) - unpack_aux(gtt_read(ch_data + i), - recv + i, recv_bytes - i); - - return recv_bytes; -} - -/* Write data to the aux channel in native mode */ -static int -intel_dp_aux_native_write(struct intel_dp *intel_dp, - uint16_t address, uint8_t *send, int send_bytes) -{ - int ret; - uint8_t msg[20]; - int msg_bytes; - uint8_t ack; - - if (send_bytes > 16) - return -1; - msg[0] = AUX_NATIVE_WRITE << 4; - msg[1] = address >> 8; - msg[2] = address & 0xff; - msg[3] = send_bytes - 1; - memcpy(&msg[4], send, send_bytes); - msg_bytes = send_bytes + 4; - for (;;) { - ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1); - if (ret < 0) - return ret; - if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) - break; - else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) - udelay(100); - else - return -1; - } - return send_bytes; -} - -/* Write a single byte to the aux channel in native mode */ -static int -intel_dp_aux_native_write_1(struct intel_dp *intel_dp, - uint16_t address, uint8_t byte) -{ - return intel_dp_aux_native_write(intel_dp, address, &byte, 1); -} - -int intel_dp_set_bw(struct intel_dp *intel_dp) -{ - printk(BIOS_SPEW, "DP_LINK_BW_SET"); - return intel_dp_aux_native_write_1(intel_dp, - DP_LINK_BW_SET, - intel_dp->link_bw); -} - -int intel_dp_set_lane_count(struct intel_dp *intel_dp) -{ - printk(BIOS_SPEW, "DP_LANE_COUNT_SET %d ", intel_dp->lane_count); - return intel_dp_aux_native_write_1(intel_dp, - DP_LANE_COUNT_SET, - intel_dp->lane_count); -} - -int intel_dp_set_training_pattern(struct intel_dp *intel_dp, - u8 pat) -{ - printk(BIOS_SPEW, "DP_TRAINING_PATTERN_SET"); - return intel_dp_aux_native_write_1(intel_dp, - DP_TRAINING_PATTERN_SET, - pat); -} - -int intel_dp_set_training_lane0(struct intel_dp *intel_dp, - u8 val) -{ - printk(BIOS_SPEW, "DP_TRAINING_LANE0_SET"); - return intel_dp_aux_native_write_1(intel_dp, - DP_TRAINING_LANE0_SET, - val); -} - -/* read bytes from a native aux channel */ -static int -intel_dp_aux_native_read(struct intel_dp *intel_dp, - uint16_t address, uint8_t *recv, int recv_bytes) -{ - uint8_t msg[4]; - int msg_bytes; - uint8_t reply[20]; - int reply_bytes; - uint8_t ack; - int ret; - - msg[0] = AUX_NATIVE_READ << 4; - msg[1] = address >> 8; - msg[2] = address & 0xff; - msg[3] = recv_bytes - 1; - - msg_bytes = 4; - reply_bytes = recv_bytes + 1; - - for (;;) { - ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, - reply, reply_bytes); - if (ret == 0) - return -1; - if (ret < 0) - return ret; - ack = reply[0]; - if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { - memcpy(recv, reply + 1, ret - 1); - return ret - 1; - } - else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) - udelay(100); - else - return -1; - } -} - -int -intel_dp_i2c_aux_ch(struct intel_dp *intel_dp, - int mode, uint8_t write_byte, uint8_t *read_byte) -{ - uint8_t msg[5]; - uint8_t reply[2]; - unsigned retry; - int msg_bytes; - int reply_bytes; - int ret; - - /* Set up the command byte */ - if (mode & MODE_I2C_READ) - msg[0] = AUX_I2C_READ << 4; - else - msg[0] = AUX_I2C_WRITE << 4; - - if (!(mode & MODE_I2C_STOP)) - msg[0] |= AUX_I2C_MOT << 4; - - msg[1] = intel_dp->address >> 8; - msg[2] = intel_dp->address; - - switch (mode) { - case MODE_I2C_WRITE: - msg[3] = 0; - msg[4] = write_byte; - msg_bytes = 5; - reply_bytes = 1; - break; - case MODE_I2C_READ: - msg[3] = 0; - msg_bytes = 4; - reply_bytes = 2; - break; - default: - msg_bytes = 3; - reply_bytes = 1; - break; - } - - for (retry = 0; retry < 5; retry++) { - ret = intel_dp_aux_ch(intel_dp, - msg, msg_bytes, - reply, reply_bytes); - if (ret < 0) { - printk(BIOS_ERR, "aux_ch failed %d\n", ret); - return ret; - } - - switch (reply[0] & AUX_NATIVE_REPLY_MASK) { - case AUX_NATIVE_REPLY_ACK: - /* I2C-over-AUX Reply field is only valid - * when paired with AUX ACK. - */ - break; - case AUX_NATIVE_REPLY_NACK: - printk(BIOS_ERR, "aux_ch native nack\n"); - return -1; - case AUX_NATIVE_REPLY_DEFER: - udelay(100); - continue; - default: - printk(BIOS_ERR, "aux_ch invalid native reply 0x%02x\n", - reply[0]); - return -1; - } - - switch (reply[0] & AUX_I2C_REPLY_MASK) { - case AUX_I2C_REPLY_ACK: - if (mode == MODE_I2C_READ) { - *read_byte = reply[1]; - } - return reply_bytes - 1; - case AUX_I2C_REPLY_NACK: - printk(BIOS_ERR, "aux_i2c nack\n"); - return -1; - case AUX_I2C_REPLY_DEFER: - printk(BIOS_ERR, "aux_i2c defer\n"); - udelay(100); - break; - default: - printk(BIOS_ERR, - "aux_i2c invalid reply 0x%02x\n", reply[0]); - return -1; - } - } - - printk(BIOS_ERR, "too many retries, giving up\n"); - return -1; -} - -int intel_dp_i2c_write(struct intel_dp *intel_dp, - u8 val) -{ - return intel_dp_i2c_aux_ch(intel_dp, - MODE_I2C_WRITE, - val, - NULL); -} - -int intel_dp_i2c_read(struct intel_dp *intel_dp, - u8 *val) -{ - return intel_dp_i2c_aux_ch(intel_dp, - MODE_I2C_READ, - 0, - val); -} - -int -intel_dp_i2c_init(struct intel_dp *intel_dp) -{ - int ret = 0; - - /* not clear what we need to do here, if anything. - * this function was more about setting up the kernel. - * it's a handy placeholder, so we leave it in for now. - */ - return ret; -} - -static void -intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den) -{ - while (*num > DATA_LINK_M_N_MASK || *den > DATA_LINK_M_N_MASK) { - *num >>= 1; - *den >>= 1; - } -} - -unsigned int roundup_power_of_two(unsigned int n); - -unsigned int roundup_power_of_two(unsigned int n) -{ - n--; - n |= n >> 1; - n |= n >> 2; - n |= n >> 4; - n |= n >> 8; - n |= n >> 16; - n++; - return n; -} - -static void compute_m_n(unsigned int m, unsigned int n, - unsigned int *ret_m, unsigned int *ret_n) -{ - /* We noticed in the IO operations that - * the VBIOS was setting N to DATA_LINK_N_MAX. - * This makes sense, actually: the bigger N is, i.e. - * the bigger the denominator is, the bigger - * the numerator can be, and the more - * bits of numerator you get, the better the result. - * So, first pick the max of the two powers of two. - * And, in the (unlikely) event that you end up with - * something bigger than DATA_LINK_N_MAX, catch that - * case with a MIN. Note the second case is unlikely, - * but we are best off being careful. - */ - /* - * This code is incorrect and will always set ret_n - * to DATA_LINK_N_MAX. - */ - *ret_n = MAX(roundup_power_of_two(n), DATA_LINK_N_MAX); - *ret_n = MIN(*ret_n, DATA_LINK_N_MAX); - *ret_m = ( (unsigned long long)m * *ret_n) / n; - intel_reduce_m_n_ratio(ret_m, ret_n); -} - -void intel_dp_compute_m_n(unsigned int bits_per_pixel, - unsigned int nlanes, - unsigned int pixel_clock, - unsigned int link_clock, - struct intel_dp_m_n *m_n) -{ - m_n->tu = 64; - compute_m_n(bits_per_pixel * pixel_clock, - link_clock * nlanes * 8, - &m_n->gmch_m, &m_n->gmch_n); - - compute_m_n(pixel_clock, link_clock, - &m_n->link_m, &m_n->link_n); -} - -static void ironlake_edp_pll_off(void); - -void -intel_dp_mode_set(struct intel_dp *intel_dp) -{ - /* Turn on the eDP PLL if needed */ - if (is_edp(intel_dp)) { - if (!is_pch_edp(intel_dp)) - ironlake_edp_pll_on(); - else - ironlake_edp_pll_off(); - } - - /* - * There are four kinds of DP registers: - * - * IBX PCH - * SNB CPU - * IVB CPU - * CPT PCH - * - * IBX PCH and CPU are the same for almost everything, - * except that the CPU DP PLL is configured in this - * register - * - * CPT PCH is quite different, having many bits moved - * to the TRANS_DP_CTL register instead. That - * configuration happens (oddly) in ironlake_pch_enable - */ - - /* Preserve the BIOS-computed detected bit. This is - * supposed to be read-only. - */ - intel_dp->DP = gtt_read(intel_dp->output_reg) & DP_DETECTED; - printk(BIOS_SPEW, "%s: initial value is %08lx\n", __func__, - (unsigned long)intel_dp->DP); - /* | 0 essentially */ - intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; - - /* Handle DP bits in common between all three register formats */ - - switch (intel_dp->lane_count) { - case 1: - intel_dp->DP |= DP_PORT_WIDTH_1; - break; - case 2: - intel_dp->DP |= DP_PORT_WIDTH_2; - break; - case 4: - intel_dp->DP |= DP_PORT_WIDTH_4; - break; - } - memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); - intel_dp->link_configuration[0] = intel_dp->link_bw; - intel_dp->link_configuration[1] = intel_dp->lane_count; - intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; - /* - * Check for DPCD version > 1.1 and enhanced framing support - */ - if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && - (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { - intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; - } - - /* Split out the IBX/CPU vs CPT settings */ - - if (is_cpu_edp(intel_dp) && (intel_dp->gen == 7)) { - /* what are these? We're not sure. - if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) - intel_dp->DP |= DP_SYNC_HS_HIGH; - - if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) - */ - intel_dp->DP |= DP_SYNC_VS_HIGH; - /* */ - intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; - - if (intel_dp->link_configuration[1] & - DP_LANE_COUNT_ENHANCED_FRAME_EN) - intel_dp->DP |= DP_ENHANCED_FRAMING; - - intel_dp->DP |= intel_dp->pipe << 29; - - /* don't miss out required setting for eDP */ - intel_dp->DP |= DP_PLL_ENABLE; - if (intel_dp->clock < 200000) - intel_dp->DP |= DP_PLL_FREQ_160MHZ; - else - intel_dp->DP |= DP_PLL_FREQ_270MHZ; - } else if (!intel_dp->has_pch_cpt || is_cpu_edp(intel_dp)) { - intel_dp->DP |= intel_dp->color_range; - intel_dp->DP |= DP_LINK_TRAIN_OFF; - - if (intel_dp->link_configuration[1] & - DP_LANE_COUNT_ENHANCED_FRAME_EN) - intel_dp->DP |= DP_ENHANCED_FRAMING; - - if (intel_dp->pipe == 1) - intel_dp->DP |= DP_PIPEB_SELECT; - - if (is_cpu_edp(intel_dp)) { - /* don't miss out required setting for eDP */ - intel_dp->DP |= DP_PLL_ENABLE; - if (intel_dp->clock < 200000) - intel_dp->DP |= DP_PLL_FREQ_160MHZ; - else - intel_dp->DP |= DP_PLL_FREQ_270MHZ; - } - } else { - intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; - } -} - -#define IDLE_ON_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) -#define IDLE_ON_VALUE (PP_ON | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) - -#define IDLE_OFF_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) -#define IDLE_OFF_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) - -#define IDLE_CYCLE_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) -#define IDLE_CYCLE_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) - -static void ironlake_wait_panel_status(struct intel_dp *intel_dp, - u32 mask, - u32 value) -{ - int i; - u32 status; - printk(BIOS_ERR, "[000000.0] [drm:%s], ", __func__); - printk(BIOS_ERR, "mask %08lx value %08lx status %08lx control %08lx\n", - (unsigned long) mask, (unsigned long) value, - (unsigned long)gtt_read(PCH_PP_STATUS), - (unsigned long)gtt_read(PCH_PP_CONTROL)); - - for (i = 0, status = gtt_read(PCH_PP_STATUS); ((status & mask) != value) && (i < 5000); - status = gtt_read(PCH_PP_STATUS)){ - udelay(10); - } - if (i > 5000){ - printk(BIOS_ERR, - "Panel status timeout: status %08lx control %08lx\n", - (unsigned long)gtt_read(PCH_PP_STATUS), - (unsigned long)gtt_read(PCH_PP_CONTROL)); - } -} - -static void ironlake_wait_panel_on(struct intel_dp *intel_dp) -{ - printk(BIOS_ERR, "Wait for panel power on\n"); - ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); -} - -static void ironlake_wait_panel_off(struct intel_dp *intel_dp) -{ - printk(BIOS_ERR, "Wait for panel power off time\n"); - ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); -} - -static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp) -{ - printk(BIOS_ERR, "Wait for panel power cycle\n"); - ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); -} - -void intel_dp_wait_reg(unsigned long addr, - unsigned long val) -{ - unsigned long newval; - int tries = 0; - - while ((newval = gtt_read(addr)) != val) { - udelay(1); - if (tries++ > 1000) { - printk(BIOS_ERR, "%s: Waiting on %08lx to be %08lx, got %08lx\n", - __func__, addr, val, newval); - break; - } - } -} - -void intel_dp_wait_panel_power_control(unsigned long val) -{ - intel_dp_wait_reg(PCH_PP_CONTROL, val); -} - -/* Read the current pp_control value, unlocking the register if it - * is locked - */ - -static u32 ironlake_get_pp_control(void) -{ - u32 control = gtt_read(PCH_PP_CONTROL); - - control &= ~PANEL_UNLOCK_MASK; - control |= PANEL_UNLOCK_REGS; - return control; -} - -void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!is_edp(intel_dp)) - return; - printk(BIOS_ERR, "Turn eDP VDD on\n"); - - if (intel_dp->want_panel_vdd) { - printk(BIOS_ERR, "eDP VDD already requested on\n"); - } - - intel_dp->want_panel_vdd = 1; - - if (ironlake_edp_have_panel_vdd(intel_dp)) { - printk(BIOS_ERR, "eDP VDD already on\n"); - return; - } - - if (!ironlake_edp_have_panel_power(intel_dp)) - ironlake_wait_panel_power_cycle(intel_dp); - - pp = ironlake_get_pp_control(); - pp |= EDP_FORCE_VDD; - gtt_write(PCH_PP_CONTROL,pp); - // remember this if we need it later. Not sure yet. - ////POSTING_READ(PCH_PP_CONTROL); - printk(BIOS_ERR, "PCH_PP_STATUS: 0x%08lx PCH_PP_CONTROL: 0x%08lx\n", - (unsigned long) gtt_read(PCH_PP_STATUS), - (unsigned long) gtt_read(PCH_PP_CONTROL)); - - /* - * If the panel wasn't on, delay before accessing aux channel - */ - if (!ironlake_edp_have_panel_power(intel_dp)) { - printk(BIOS_ERR, "eDP was not running\n"); - mdelay(intel_dp->panel_power_up_delay); - } -} - -static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) { - pp = ironlake_get_pp_control(); - pp &= ~EDP_FORCE_VDD; - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - - /* Make sure sequencer is idle before allowing subsequent activity */ - printk(BIOS_ERR, "PCH_PP_STATUS: 0x%08lx PCH_PP_CONTROL: 0x%08lx\n", - (unsigned long) gtt_read(PCH_PP_STATUS), - (unsigned long) gtt_read(PCH_PP_CONTROL)); - - mdelay(intel_dp->panel_power_down_delay); - } -} - -void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, int sync) -{ - if (!is_edp(intel_dp)) - return; - - printk(BIOS_ERR, "Turn eDP VDD off %d\n", intel_dp->want_panel_vdd); - if (!intel_dp->want_panel_vdd) { - printk(BIOS_ERR, "eDP VDD not forced on"); - } - - intel_dp->want_panel_vdd = 0; - - if (sync) - ironlake_panel_vdd_off_sync(intel_dp); -} - -void ironlake_edp_panel_on(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!is_edp(intel_dp)) - return; - - printk(BIOS_ERR, "Turn eDP power on\n"); - - if (ironlake_edp_have_panel_power(intel_dp)) { - printk(BIOS_ERR, "eDP power already on\n"); - return; - } - - ironlake_wait_panel_power_cycle(intel_dp); - - pp = ironlake_get_pp_control(); - if (intel_dp->gen == 5) { - /* ILK workaround: disable reset around power sequence */ - pp &= ~PANEL_POWER_RESET; - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - } - - pp |= POWER_TARGET_ON; - if (!(intel_dp->gen == 5)) - pp |= PANEL_POWER_RESET; - - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - - ironlake_wait_panel_on(intel_dp); - - if (intel_dp->gen == 5) { - pp |= PANEL_POWER_RESET; /* restore panel reset bit */ - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - } -} - -void ironlake_edp_panel_off(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!is_edp(intel_dp)) - return; - - printk(BIOS_ERR, "Turn eDP power off\n"); - - if (intel_dp->want_panel_vdd) { - printk(BIOS_ERR, "Cannot turn power off while VDD is on\n"); - } - - pp = ironlake_get_pp_control(); - pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | - PANEL_POWER_RESET | EDP_BLC_ENABLE); - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - - ironlake_wait_panel_off(intel_dp); -} - -void ironlake_edp_backlight_on(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!is_edp(intel_dp)) - return; - - /* - * If we enable the backlight right away following a panel power - * on, we may see slight flicker as the panel syncs with the eDP - * link. So delay a bit to make sure the image is solid before - * allowing it to appear. - */ - mdelay(intel_dp->backlight_on_delay); - pp = ironlake_get_pp_control(); - pp |= EDP_BLC_ENABLE; - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); -} - -void ironlake_edp_backlight_off(struct intel_dp *intel_dp) -{ - u32 pp; - - if (!is_edp(intel_dp)) - return; - - pp = ironlake_get_pp_control(); - pp &= ~EDP_BLC_ENABLE; - gtt_write(PCH_PP_CONTROL,pp); - ////POSTING_READ(PCH_PP_CONTROL); - mdelay(intel_dp->backlight_off_delay); -} - -void ironlake_edp_pll_on(void) -{ - u32 dpa_ctl; - - dpa_ctl = gtt_read(DP_A); - dpa_ctl |= DP_PLL_ENABLE; - gtt_write(DP_A,dpa_ctl); - ////POSTING_READ(DP_A); - udelay(200); -} - -static void ironlake_edp_pll_off(void) -{ - u32 dpa_ctl; - - dpa_ctl = gtt_read(DP_A); - dpa_ctl &= ~DP_PLL_ENABLE; - gtt_write(DP_A,dpa_ctl); - ////POSTING_READ(DP_A); - udelay(200); -} - -/* If the sink supports it, try to set the power state appropriately */ -void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) -{ - int ret, i; - - /* Should have a valid DPCD by this point */ - if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) - return; - - /* the convention, for whatever reason, is that mode > 0 means 'off' */ - if (mode) { - ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER, - DP_SET_POWER_D3); - if (ret != 1) { - printk(BIOS_ERR, "failed to write sink power state\n"); - } - } else { - /* - * When turning on, we need to retry for 1ms to give the sink - * time to wake up. - */ - for (i = 0; i < 3; i++) { - ret = intel_dp_aux_native_write_1(intel_dp, - DP_SET_POWER, - DP_SET_POWER_D0); - if (ret == 1) - break; - mdelay(1); - } - } -} - -/* - * Native read with retry for link status and receiver capability reads for - * cases where the sink may still be asleep. - */ -static int -intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address, - uint8_t *recv, int recv_bytes) -{ - int ret, i; - - /* - * Sinks are *supposed* to come up within 1ms from an off state, - * but we're also supposed to retry 3 times per the spec. - */ - for (i = 0; i < 3; i++) { - ret = intel_dp_aux_native_read(intel_dp, address, recv, - recv_bytes); - if (ret == recv_bytes) - return ret; - mdelay(1); - } - - return ret; -} - -/* - * Fetch AUX CH registers 0x202 - 0x207 which contain - * link status information - */ -int -intel_dp_get_link_status(struct intel_dp *intel_dp, - uint8_t link_status[DP_LINK_STATUS_SIZE]) -{ - int ret, i; - - ret = intel_dp_aux_native_read_retry(intel_dp, - DP_LANE0_1_STATUS, - link_status, - DP_LINK_STATUS_SIZE); - - printk(BIOS_SPEW, "%s:", __func__); - for (i = 0; i < /* !!sizeof(link_status) == 4*/ - DP_LINK_STATUS_SIZE; i++) - printk(BIOS_SPEW, " %02x", link_status[i]); - printk(BIOS_SPEW, "\n"); - return ret; -} - -static uint8_t -intel_dp_link_status(uint8_t link_status[DP_LINK_STATUS_SIZE], - int r) -{ - return link_status[r - DP_LANE0_1_STATUS]; -} - -const char *voltage_names[] = { - "0.4V", "0.6V", "0.8V", "1.2V" -}; -const char *pre_emph_names[] = { - "0dB", "3.5dB", "6dB", "9.5dB" -}; -const char *link_train_names[] = { - "pattern 1", "pattern 2", "idle", "off" -}; - -/* - * These are source-specific values; current Intel hardware supports - * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB - */ - -static uint8_t -intel_dp_voltage_max(struct intel_dp *intel_dp) -{ - - if ((intel_dp->gen == 7) && is_cpu_edp(intel_dp)) - return DP_TRAIN_VOLTAGE_SWING_800; - else if (intel_dp->has_pch_cpt && !is_cpu_edp(intel_dp)) - return DP_TRAIN_VOLTAGE_SWING_1200; - else - return DP_TRAIN_VOLTAGE_SWING_800; -} - -static uint8_t -intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) -{ - - if (intel_dp->is_haswell){ - switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { - case DP_TRAIN_VOLTAGE_SWING_400: - return DP_TRAIN_PRE_EMPHASIS_9_5; - case DP_TRAIN_VOLTAGE_SWING_600: - return DP_TRAIN_PRE_EMPHASIS_6; - case DP_TRAIN_VOLTAGE_SWING_800: - return DP_TRAIN_PRE_EMPHASIS_3_5; - case DP_TRAIN_VOLTAGE_SWING_1200: - default: - return DP_TRAIN_PRE_EMPHASIS_0; - } - } else if ((intel_dp->gen == 7) && is_cpu_edp(intel_dp)) { - switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { - case DP_TRAIN_VOLTAGE_SWING_400: - return DP_TRAIN_PRE_EMPHASIS_6; - case DP_TRAIN_VOLTAGE_SWING_600: - case DP_TRAIN_VOLTAGE_SWING_800: - return DP_TRAIN_PRE_EMPHASIS_3_5; - default: - return DP_TRAIN_PRE_EMPHASIS_0; - } - } else { - switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { - case DP_TRAIN_VOLTAGE_SWING_400: - return DP_TRAIN_PRE_EMPHASIS_6; - case DP_TRAIN_VOLTAGE_SWING_600: - return DP_TRAIN_PRE_EMPHASIS_6; - case DP_TRAIN_VOLTAGE_SWING_800: - return DP_TRAIN_PRE_EMPHASIS_3_5; - case DP_TRAIN_VOLTAGE_SWING_1200: - default: - return DP_TRAIN_PRE_EMPHASIS_0; - } - } -} - -static void -intel_get_adjust_train(struct intel_dp *intel_dp, - uint8_t link_status[DP_LINK_STATUS_SIZE]) -{ - uint8_t v = 0; - uint8_t p = 0; - int lane; - uint8_t voltage_max; - uint8_t preemph_max; - - for (lane = 0; lane < intel_dp->lane_count; lane++) { - uint8_t this_v = drm_dp_get_adjust_request_voltage( - link_status, lane); - uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis( - link_status, lane); - - if (this_v > v) - v = this_v; - if (this_p > p) - p = this_p; - } - - voltage_max = intel_dp_voltage_max(intel_dp); - if (v >= voltage_max) - v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; - - preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); - if (p >= preemph_max) - p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; - - printk(BIOS_SPEW, "%s: set to %s %s%s %s\n", - __func__, - voltage_names[v&3], pre_emph_names[p&3], - v & DP_TRAIN_MAX_SWING_REACHED ? ",max volt swing reached":"", - p & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ? - ", max pre emph reached" : ""); - for (lane = 0; lane < 4; lane++) - intel_dp->train_set[lane] = v | p; -} - -static uint32_t -intel_dp_signal_levels(uint8_t train_set) -{ - uint32_t signal_levels = 0; - - switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { - case DP_TRAIN_VOLTAGE_SWING_400: - default: - signal_levels |= DP_VOLTAGE_0_4; - break; - case DP_TRAIN_VOLTAGE_SWING_600: - signal_levels |= DP_VOLTAGE_0_6; - break; - case DP_TRAIN_VOLTAGE_SWING_800: - signal_levels |= DP_VOLTAGE_0_8; - break; - case DP_TRAIN_VOLTAGE_SWING_1200: - signal_levels |= DP_VOLTAGE_1_2; - break; - } - switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { - case DP_TRAIN_PRE_EMPHASIS_0: - default: - signal_levels |= DP_PRE_EMPHASIS_0; - break; - case DP_TRAIN_PRE_EMPHASIS_3_5: - signal_levels |= DP_PRE_EMPHASIS_3_5; - break; - case DP_TRAIN_PRE_EMPHASIS_6: - signal_levels |= DP_PRE_EMPHASIS_6; - break; - case DP_TRAIN_PRE_EMPHASIS_9_5: - signal_levels |= DP_PRE_EMPHASIS_9_5; - break; - } - return signal_levels; -} - -/* Gen6's DP voltage swing and pre-emphasis control */ -static uint32_t -intel_gen6_edp_signal_levels(uint8_t train_set) -{ - int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | - DP_TRAIN_PRE_EMPHASIS_MASK); - switch (signal_levels) { - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: - return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: - return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: - return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: - return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: - case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: - return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; - default: - printk(BIOS_ERR, "[000000.0] [drm:%s], ", __func__); - printk(BIOS_ERR, "Unsupported voltage swing/pre-emphasis level:" - "0x%x\n", signal_levels); - return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; - } -} - -/* Gen7's DP voltage swing and pre-emphasis control */ -static uint32_t -intel_gen7_edp_signal_levels(uint8_t train_set) -{ - int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | - DP_TRAIN_PRE_EMPHASIS_MASK); - switch (signal_levels) { - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: - return EDP_LINK_TRAIN_400MV_0DB_IVB; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: - return EDP_LINK_TRAIN_400MV_3_5DB_IVB; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: - return EDP_LINK_TRAIN_400MV_6DB_IVB; - - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: - return EDP_LINK_TRAIN_600MV_0DB_IVB; - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: - return EDP_LINK_TRAIN_600MV_3_5DB_IVB; - - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: - return EDP_LINK_TRAIN_800MV_0DB_IVB; - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: - return EDP_LINK_TRAIN_800MV_3_5DB_IVB; - - default: - printk(BIOS_ERR, "[000000.0] [drm:%s], ", __func__); - printk(BIOS_ERR, "Unsupported voltage swing/pre-emphasis level:" - "0x%x\n", signal_levels); - return EDP_LINK_TRAIN_500MV_0DB_IVB; - } -} - -/* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ -static uint32_t -intel_dp_signal_levels_hsw(uint8_t train_set) -{ - int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | - DP_TRAIN_PRE_EMPHASIS_MASK); - switch (signal_levels) { - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: - return DDI_BUF_EMP_400MV_0DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: - return DDI_BUF_EMP_400MV_3_5DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: - return DDI_BUF_EMP_400MV_6DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: - return DDI_BUF_EMP_400MV_9_5DB_HSW; - - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: - return DDI_BUF_EMP_600MV_0DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: - return DDI_BUF_EMP_600MV_3_5DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: - return DDI_BUF_EMP_600MV_6DB_HSW; - - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: - return DDI_BUF_EMP_800MV_0DB_HSW; - case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: - return DDI_BUF_EMP_800MV_3_5DB_HSW; - default: - printk(BIOS_SPEW, - "Unsupported voltage swing/pre-emphasis level:" - "0x%x\n", signal_levels); - return DDI_BUF_EMP_400MV_0DB_HSW; - } -} - - -static uint8_t -intel_get_lane_status(uint8_t link_status[DP_LINK_STATUS_SIZE], - int lane) -{ - int s = (lane & 1) * 4; - uint8_t l = link_status[lane>>1]; - - return (l >> s) & 0xf; -} - -/* Check for clock recovery is done on all channels */ -static int -intel_clock_recovery_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], - int lane_count) -{ - int lane; - uint8_t lane_status; - - for (lane = 0; lane < lane_count; lane++) { - lane_status = intel_get_lane_status(link_status, lane); - printk(BIOS_SPEW, - "%s: Lane %d, status %02x\n", __func__, - lane, lane_status); - if ((lane_status & DP_LANE_CR_DONE) == 0) - return 0; - } - return 1; -} - -/* Check to see if channel eq is done on all channels */ -#define CHANNEL_EQ_BITS (DP_LANE_CR_DONE| \ - DP_LANE_CHANNEL_EQ_DONE| \ - DP_LANE_SYMBOL_LOCKED) -int -intel_channel_eq_ok(struct intel_dp *intel_dp, - uint8_t link_status[DP_LINK_STATUS_SIZE]) -{ - uint8_t lane_align; - uint8_t lane_status; - int lane; - - lane_align = intel_dp_link_status(link_status, - DP_LANE_ALIGN_STATUS_UPDATED); - if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) - return 0; - for (lane = 0; lane < intel_dp->lane_count; lane++) { - lane_status = intel_get_lane_status(link_status, lane); - if ((lane_status & CHANNEL_EQ_BITS) != CHANNEL_EQ_BITS) - return 0; - } - return 1; -} - -static int -intel_dp_set_link_train(struct intel_dp *intel_dp, - uint32_t dp_reg_value, - uint8_t dp_train_pat) -{ - int ret; - u32 temp; - int port = intel_dp->port; - int i; - - printk(BIOS_SPEW, "%s: dp_reg_value %08lx dp_train_pat %02x\n", - __func__, (unsigned long) dp_reg_value, dp_train_pat); - if (intel_dp->is_haswell){ - temp = gtt_read(DP_TP_CTL(port)); - - if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) - temp |= DP_TP_CTL_SCRAMBLE_DISABLE; - else - temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; - - temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; - switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { - case DP_TRAINING_PATTERN_DISABLE: - temp |= DP_TP_CTL_LINK_TRAIN_IDLE; - gtt_write(DP_TP_CTL(port), temp); - - for (i = 0; i < 10; i++){ - u32 status; - status = gtt_read(DP_TP_STATUS(port)); - if (status & DP_TP_STATUS_IDLE_DONE) - break; - } - - if (i == 10) - printk(BIOS_ERR, - "Timed out waiting for DP idle patterns\n"); - - temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; - temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; - - break; - case DP_TRAINING_PATTERN_1: - temp |= DP_TP_CTL_LINK_TRAIN_PAT1; - break; - case DP_TRAINING_PATTERN_2: - temp |= DP_TP_CTL_LINK_TRAIN_PAT2; - break; - case DP_TRAINING_PATTERN_3: - temp |= DP_TP_CTL_LINK_TRAIN_PAT3; - break; - } - gtt_write(DP_TP_CTL(port), temp); - - } else if (intel_dp->has_pch_cpt && - (intel_dp->gen != 7 || !is_cpu_edp(intel_dp))) { - dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT; - - switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { - case DP_TRAINING_PATTERN_DISABLE: - dp_reg_value |= DP_LINK_TRAIN_OFF_CPT; - break; - case DP_TRAINING_PATTERN_1: - dp_reg_value |= DP_LINK_TRAIN_PAT_1_CPT; - break; - case DP_TRAINING_PATTERN_2: - dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; - break; - case DP_TRAINING_PATTERN_3: - printk(BIOS_ERR, - "DP training pattern 3 not supported\n"); - dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; - break; - } - - } else { - dp_reg_value &= ~DP_LINK_TRAIN_MASK; - - switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { - case DP_TRAINING_PATTERN_DISABLE: - dp_reg_value |= DP_LINK_TRAIN_OFF; - break; - case DP_TRAINING_PATTERN_1: - dp_reg_value |= DP_LINK_TRAIN_PAT_1; - break; - case DP_TRAINING_PATTERN_2: - dp_reg_value |= DP_LINK_TRAIN_PAT_2; - break; - case DP_TRAINING_PATTERN_3: - printk(BIOS_ERR,"DP training pattern 3 not supported\n"); - dp_reg_value |= DP_LINK_TRAIN_PAT_2; - break; - } - } - - gtt_write(intel_dp->output_reg, dp_reg_value); - //POSTING_READ(intel_dp->output_reg); - - intel_dp_aux_native_write_1(intel_dp, - DP_TRAINING_PATTERN_SET, - dp_train_pat); - - if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) != - DP_TRAINING_PATTERN_DISABLE) { - ret = intel_dp_aux_native_write(intel_dp, - DP_TRAINING_LANE0_SET, - intel_dp->train_set, - intel_dp->lane_count); - if (ret != intel_dp->lane_count){ - printk(BIOS_ERR, "%s: wanted %d, got %d\n", __func__, - intel_dp->lane_count, ret); - return 0; - } - } - - printk(BIOS_SPEW, "%s: success\n", __func__); - return 1; -} - -/* Enable corresponding port and start training pattern 1 */ -void -intel_dp_start_link_train(struct intel_dp *intel_dp) -{ - int i; - uint8_t voltage; - int clock_recovery = 0; - int voltage_tries, loop_tries; - u32 reg; - uint32_t DP = intel_dp->DP; - - if (intel_dp->is_haswell) - intel_ddi_prepare_link_retrain(intel_dp, intel_dp->port); - - /* Write the link configuration data */ - printk(BIOS_SPEW, "Write the link configuration data\n"); - intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, - intel_dp->link_configuration, - DP_LINK_CONFIGURATION_SIZE); - printk(BIOS_SPEW, "Written\n"); - - DP |= DP_PORT_EN; - - memset(intel_dp->train_set, 0, 4); - voltage = 0xff; - voltage_tries = 0; - loop_tries = 0; - clock_recovery = 0; - - for (;;) { - /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ - uint8_t link_status[DP_LINK_STATUS_SIZE]; - uint32_t signal_levels; - - if (intel_dp->is_haswell){ - signal_levels = - intel_dp_signal_levels_hsw(intel_dp->train_set[0]); - DP = (DP & ~DDI_BUF_EMP_MASK) | signal_levels; - printk(BIOS_SPEW, "Haswell: levels %08x DP %08x\n", signal_levels, DP); - } else if ((intel_dp->gen == 7) && is_cpu_edp(intel_dp)) { - signal_levels = intel_gen7_edp_signal_levels(intel_dp->train_set[0]); - DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB) | signal_levels; - } else if ((intel_dp->gen == 6) && is_cpu_edp(intel_dp)) { - signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]); - DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; - } else { - signal_levels = intel_dp_signal_levels(intel_dp->train_set[0]); - DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; - } - printk(BIOS_ERR, "training pattern 1 signal levels %08x\n", signal_levels); - - if (intel_dp->has_pch_cpt && ((intel_dp->gen == 7) || !is_cpu_edp(intel_dp))) - reg = DP | DP_LINK_TRAIN_PAT_1_CPT; - else - reg = DP | DP_LINK_TRAIN_PAT_1; - - if (!intel_dp_set_link_train(intel_dp, reg, - DP_TRAINING_PATTERN_1 | - DP_LINK_SCRAMBLING_DISABLE)) - break; - /* Set training pattern 1 */ - - udelay(100); - if (!intel_dp_get_link_status(intel_dp, link_status)) { - printk(BIOS_ERR, "failed to get link status\n"); - break; - } - - if (intel_clock_recovery_ok(link_status, intel_dp->lane_count)) { - printk(BIOS_ERR, "clock recovery OK\n"); - clock_recovery = 1; - break; - } - - /* Check to see if we've tried the max voltage */ - for (i = 0; i < intel_dp->lane_count; i++) - if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) - break; - if (i == intel_dp->lane_count) { - ++loop_tries; - if (loop_tries == 5) { - printk(BIOS_ERR, "too many full retries, give up\n"); - break; - } - printk(BIOS_SPEW, "%s: reset train set\n", __func__); - memset(intel_dp->train_set, 0, 4); - voltage_tries = 0; - continue; - } - - /* Check to see if we've tried the same voltage 5 times */ - if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { - ++voltage_tries; - if (voltage_tries == 5) { - printk(BIOS_ERR, "too many voltage retries, give up\n"); - break; - } - } else - voltage_tries = 0; - voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; - printk(BIOS_SPEW, "%s: voltage now %s\n", __func__, - voltage_names[voltage]); - - /* Compute new intel_dp->train_set as requested by target */ - intel_get_adjust_train(intel_dp, link_status); - printk(BIOS_SPEW, "%s: new intel train set is " - "%02x%02x%02x%02x", - __func__, - intel_dp->train_set[0], intel_dp->train_set[1], - intel_dp->train_set[2], intel_dp->train_set[3]); - } - - intel_dp->DP = DP; -} - -int -intel_dp_get_dpcd(struct intel_dp *intel_dp) -{ - int got = 0, want = sizeof(intel_dp->dpcd), rev; - got = intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd, - want); - if (got < want) { - printk(BIOS_SPEW, "%s: got %d, wanted %d\n", __func__, got, want); - return 0; - } - - rev = intel_dp->dpcd[DP_DPCD_REV]; - if (!rev){ - printk(BIOS_SPEW, "%s: intel->dp[DP_DPCD_REV] is 0\n", - __func__); - return 0; - } - - printk(BIOS_SPEW, "DPCD: %02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx\n", - intel_dp->dpcd[0], intel_dp->dpcd[1], intel_dp->dpcd[2], - intel_dp->dpcd[3], intel_dp->dpcd[4], intel_dp->dpcd[5], - intel_dp->dpcd[6], intel_dp->dpcd[7]); - return 1; -} - -/* I have no idea how big max downspread is. 1 byte? Hard as hell to find. */ -int -intel_dp_get_max_downspread(struct intel_dp *intel_dp, u8 *max_downspread) -{ - int got, want = 1; - got = intel_dp_aux_native_read_retry(intel_dp, DP_MAX_DOWNSPREAD, max_downspread, - want); - if (got < want) { - printk(BIOS_SPEW, "%s: got %d, wanted %d\n", __func__, got, want); - return 0; - } - - printk(BIOS_SPEW, "%s: max_downspread is %02x\n", __func__, *max_downspread); - return 1; -} - -void intel_dp_set_m_n_regs(struct intel_dp *dp) -{ - gtt_write(PIPE_DATA_M1(dp->transcoder), - TU_SIZE(dp->m_n.tu) | dp->m_n.gmch_m); - gtt_write(PIPE_DATA_N1(dp->transcoder),dp->m_n.gmch_n); - gtt_write(PIPE_LINK_M1(dp->transcoder),dp->m_n.link_m); - gtt_write(PIPE_LINK_N1(dp->transcoder),dp->m_n.link_n); -} - -int intel_dp_bw_code_to_link_rate(u8 link_bw) -{ - switch (link_bw) { - default: - printk(BIOS_ERR, - "ERROR: link_bw(%d) is bogus; must be one of 6, 0xa, or 0x14\n", - link_bw); - case DP_LINK_BW_1_62: - return 162000; - case DP_LINK_BW_2_7: - return 270000; - case DP_LINK_BW_5_4: - return 540000; - } -} - -void intel_dp_set_resolution(struct intel_dp *intel_dp) -{ - gtt_write(HTOTAL(intel_dp->transcoder),intel_dp->htotal); - gtt_write(HBLANK(intel_dp->transcoder),intel_dp->hblank); - gtt_write(HSYNC(intel_dp->transcoder),intel_dp->hsync); - gtt_write(VTOTAL(intel_dp->transcoder),intel_dp->vtotal); - gtt_write(VBLANK(intel_dp->transcoder),intel_dp->vblank); - gtt_write(VSYNC(intel_dp->transcoder),intel_dp->vsync); -} - -int intel_dp_get_training_pattern(struct intel_dp *intel_dp, - u8 *recv) -{ - return intel_dp_aux_native_read_retry(intel_dp, - DP_TRAINING_PATTERN_SET, - recv, - 0); -} - -int intel_dp_get_lane_count(struct intel_dp *intel_dp, - u8 *recv) -{ - int val = intel_dp_aux_native_read_retry(intel_dp, - DP_LANE_COUNT_SET, - recv, - 0); - *recv &= DP_LANE_COUNT_MASK; - printk(BIOS_SPEW, "Lane count %s:%d\n", val < 0 ? "fail" : "ok", *recv); - return val; -} - -int intel_dp_get_lane_align_status(struct intel_dp *intel_dp, - u8 *recv) -{ - return intel_dp_aux_native_read_retry(intel_dp, - DP_LANE_ALIGN_STATUS_UPDATED, - recv, - 0); -} |