// SPDX-License-Identifier: GPL-2.0-only /************************************************************************** * Copyright (c) 2011, Intel Corporation. * All Rights Reserved. * **************************************************************************/ #include #include #include #include #include #include "intel_bios.h" #include "mid_bios.h" #include "psb_drv.h" #include "psb_intel_reg.h" #include "psb_reg.h" static int oaktrail_output_init(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); if (dev_priv->iLVDS_enable) oaktrail_lvds_init(dev, &dev_priv->mode_dev); else dev_err(dev->dev, "DSI is not supported\n"); if (dev_priv->hdmi_priv) oaktrail_hdmi_init(dev, &dev_priv->mode_dev); psb_intel_sdvo_init(dev, SDVOB); return 0; } /* * Provide the low level interfaces for the Moorestown backlight */ #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE #define MRST_BLC_MAX_PWM_REG_FREQ 0xFFFF #define BLC_PWM_PRECISION_FACTOR 100 /* 10000000 */ #define BLC_PWM_FREQ_CALC_CONSTANT 32 #define MHz 1000000 #define BLC_ADJUSTMENT_MAX 100 static struct backlight_device *oaktrail_backlight_device; static int oaktrail_brightness; static int oaktrail_set_brightness(struct backlight_device *bd) { struct drm_device *dev = bl_get_data(oaktrail_backlight_device); struct drm_psb_private *dev_priv = to_drm_psb_private(dev); int level = bd->props.brightness; u32 blc_pwm_ctl; u32 max_pwm_blc; /* Percentage 1-100% being valid */ if (level < 1) level = 1; if (gma_power_begin(dev, 0)) { /* Calculate and set the brightness value */ max_pwm_blc = REG_READ(BLC_PWM_CTL) >> 16; blc_pwm_ctl = level * max_pwm_blc / 100; /* Adjust the backlight level with the percent in * dev_priv->blc_adj1; */ blc_pwm_ctl = blc_pwm_ctl * dev_priv->blc_adj1; blc_pwm_ctl = blc_pwm_ctl / 100; /* Adjust the backlight level with the percent in * dev_priv->blc_adj2; */ blc_pwm_ctl = blc_pwm_ctl * dev_priv->blc_adj2; blc_pwm_ctl = blc_pwm_ctl / 100; /* force PWM bit on */ REG_WRITE(BLC_PWM_CTL2, (0x80000000 | REG_READ(BLC_PWM_CTL2))); REG_WRITE(BLC_PWM_CTL, (max_pwm_blc << 16) | blc_pwm_ctl); gma_power_end(dev); } oaktrail_brightness = level; return 0; } static int oaktrail_get_brightness(struct backlight_device *bd) { /* return locally cached var instead of HW read (due to DPST etc.) */ /* FIXME: ideally return actual value in case firmware fiddled with it */ return oaktrail_brightness; } static int device_backlight_init(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); unsigned long core_clock; u16 bl_max_freq; uint32_t value; uint32_t blc_pwm_precision_factor; dev_priv->blc_adj1 = BLC_ADJUSTMENT_MAX; dev_priv->blc_adj2 = BLC_ADJUSTMENT_MAX; bl_max_freq = 256; /* this needs to be set elsewhere */ blc_pwm_precision_factor = BLC_PWM_PRECISION_FACTOR; core_clock = dev_priv->core_freq; value = (core_clock * MHz) / BLC_PWM_FREQ_CALC_CONSTANT; value *= blc_pwm_precision_factor; value /= bl_max_freq; value /= blc_pwm_precision_factor; if (value > (unsigned long long)MRST_BLC_MAX_PWM_REG_FREQ) return -ERANGE; if (gma_power_begin(dev, false)) { REG_WRITE(BLC_PWM_CTL2, (0x80000000 | REG_READ(BLC_PWM_CTL2))); REG_WRITE(BLC_PWM_CTL, value | (value << 16)); gma_power_end(dev); } return 0; } static const struct backlight_ops oaktrail_ops = { .get_brightness = oaktrail_get_brightness, .update_status = oaktrail_set_brightness, }; static int oaktrail_backlight_init(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); int ret; struct backlight_properties props; memset(&props, 0, sizeof(struct backlight_properties)); props.max_brightness = 100; props.type = BACKLIGHT_PLATFORM; oaktrail_backlight_device = backlight_device_register("oaktrail-bl", NULL, (void *)dev, &oaktrail_ops, &props); if (IS_ERR(oaktrail_backlight_device)) return PTR_ERR(oaktrail_backlight_device); ret = device_backlight_init(dev); if (ret < 0) { backlight_device_unregister(oaktrail_backlight_device); return ret; } oaktrail_backlight_device->props.brightness = 100; oaktrail_backlight_device->props.max_brightness = 100; backlight_update_status(oaktrail_backlight_device); dev_priv->backlight_device = oaktrail_backlight_device; return 0; } #endif /* * Provide the Moorestown specific chip logic and low level methods * for power management */ /** * oaktrail_save_display_registers - save registers lost on suspend * @dev: our DRM device * * Save the state we need in order to be able to restore the interface * upon resume from suspend */ static int oaktrail_save_display_registers(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); struct psb_save_area *regs = &dev_priv->regs; struct psb_pipe *p = ®s->pipe[0]; int i; u32 pp_stat; /* Display arbitration control + watermarks */ regs->psb.saveDSPARB = PSB_RVDC32(DSPARB); regs->psb.saveDSPFW1 = PSB_RVDC32(DSPFW1); regs->psb.saveDSPFW2 = PSB_RVDC32(DSPFW2); regs->psb.saveDSPFW3 = PSB_RVDC32(DSPFW3); regs->psb.saveDSPFW4 = PSB_RVDC32(DSPFW4); regs->psb.saveDSPFW5 = PSB_RVDC32(DSPFW5); regs->psb.saveDSPFW6 = PSB_RVDC32(DSPFW6); regs->psb.saveCHICKENBIT = PSB_RVDC32(DSPCHICKENBIT); /* Pipe & plane A info */ p->conf = PSB_RVDC32(PIPEACONF); p->src = PSB_RVDC32(PIPEASRC); p->fp0 = PSB_RVDC32(MRST_FPA0); p->fp1 = PSB_RVDC32(MRST_FPA1); p->dpll = PSB_RVDC32(MRST_DPLL_A); p->htotal = PSB_RVDC32(HTOTAL_A); p->hblank = PSB_RVDC32(HBLANK_A); p->hsync = PSB_RVDC32(HSYNC_A); p->vtotal = PSB_RVDC32(VTOTAL_A); p->vblank = PSB_RVDC32(VBLANK_A); p->vsync = PSB_RVDC32(VSYNC_A); regs->psb.saveBCLRPAT_A = PSB_RVDC32(BCLRPAT_A); p->cntr = PSB_RVDC32(DSPACNTR); p->stride = PSB_RVDC32(DSPASTRIDE); p->addr = PSB_RVDC32(DSPABASE); p->surf = PSB_RVDC32(DSPASURF); p->linoff = PSB_RVDC32(DSPALINOFF); p->tileoff = PSB_RVDC32(DSPATILEOFF); /* Save cursor regs */ regs->psb.saveDSPACURSOR_CTRL = PSB_RVDC32(CURACNTR); regs->psb.saveDSPACURSOR_BASE = PSB_RVDC32(CURABASE); regs->psb.saveDSPACURSOR_POS = PSB_RVDC32(CURAPOS); /* Save palette (gamma) */ for (i = 0; i < 256; i++) p->palette[i] = PSB_RVDC32(PALETTE_A + (i << 2)); if (dev_priv->hdmi_priv) oaktrail_hdmi_save(dev); /* Save performance state */ regs->psb.savePERF_MODE = PSB_RVDC32(MRST_PERF_MODE); /* LVDS state */ regs->psb.savePP_CONTROL = PSB_RVDC32(PP_CONTROL); regs->psb.savePFIT_PGM_RATIOS = PSB_RVDC32(PFIT_PGM_RATIOS); regs->psb.savePFIT_AUTO_RATIOS = PSB_RVDC32(PFIT_AUTO_RATIOS); regs->saveBLC_PWM_CTL = PSB_RVDC32(BLC_PWM_CTL); regs->saveBLC_PWM_CTL2 = PSB_RVDC32(BLC_PWM_CTL2); regs->psb.saveLVDS = PSB_RVDC32(LVDS); regs->psb.savePFIT_CONTROL = PSB_RVDC32(PFIT_CONTROL); regs->psb.savePP_ON_DELAYS = PSB_RVDC32(LVDSPP_ON); regs->psb.savePP_OFF_DELAYS = PSB_RVDC32(LVDSPP_OFF); regs->psb.savePP_DIVISOR = PSB_RVDC32(PP_CYCLE); /* HW overlay */ regs->psb.saveOV_OVADD = PSB_RVDC32(OV_OVADD); regs->psb.saveOV_OGAMC0 = PSB_RVDC32(OV_OGAMC0); regs->psb.saveOV_OGAMC1 = PSB_RVDC32(OV_OGAMC1); regs->psb.saveOV_OGAMC2 = PSB_RVDC32(OV_OGAMC2); regs->psb.saveOV_OGAMC3 = PSB_RVDC32(OV_OGAMC3); regs->psb.saveOV_OGAMC4 = PSB_RVDC32(OV_OGAMC4); regs->psb.saveOV_OGAMC5 = PSB_RVDC32(OV_OGAMC5); /* DPST registers */ regs->psb.saveHISTOGRAM_INT_CONTROL_REG = PSB_RVDC32(HISTOGRAM_INT_CONTROL); regs->psb.saveHISTOGRAM_LOGIC_CONTROL_REG = PSB_RVDC32(HISTOGRAM_LOGIC_CONTROL); regs->psb.savePWM_CONTROL_LOGIC = PSB_RVDC32(PWM_CONTROL_LOGIC); if (dev_priv->iLVDS_enable) { /* Shut down the panel */ PSB_WVDC32(0, PP_CONTROL); do { pp_stat = PSB_RVDC32(PP_STATUS); } while (pp_stat & 0x80000000); /* Turn off the plane */ PSB_WVDC32(0x58000000, DSPACNTR); /* Trigger the plane disable */ PSB_WVDC32(0, DSPASURF); /* Wait ~4 ticks */ msleep(4); /* Turn off pipe */ PSB_WVDC32(0x0, PIPEACONF); /* Wait ~8 ticks */ msleep(8); /* Turn off PLLs */ PSB_WVDC32(0, MRST_DPLL_A); } return 0; } /** * oaktrail_restore_display_registers - restore lost register state * @dev: our DRM device * * Restore register state that was lost during suspend and resume. */ static int oaktrail_restore_display_registers(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); struct psb_save_area *regs = &dev_priv->regs; struct psb_pipe *p = ®s->pipe[0]; u32 pp_stat; int i; /* Display arbitration + watermarks */ PSB_WVDC32(regs->psb.saveDSPARB, DSPARB); PSB_WVDC32(regs->psb.saveDSPFW1, DSPFW1); PSB_WVDC32(regs->psb.saveDSPFW2, DSPFW2); PSB_WVDC32(regs->psb.saveDSPFW3, DSPFW3); PSB_WVDC32(regs->psb.saveDSPFW4, DSPFW4); PSB_WVDC32(regs->psb.saveDSPFW5, DSPFW5); PSB_WVDC32(regs->psb.saveDSPFW6, DSPFW6); PSB_WVDC32(regs->psb.saveCHICKENBIT, DSPCHICKENBIT); /* Make sure VGA plane is off. it initializes to on after reset!*/ PSB_WVDC32(0x80000000, VGACNTRL); /* set the plls */ PSB_WVDC32(p->fp0, MRST_FPA0); PSB_WVDC32(p->fp1, MRST_FPA1); /* Actually enable it */ PSB_WVDC32(p->dpll, MRST_DPLL_A); udelay(150); /* Restore mode */ PSB_WVDC32(p->htotal, HTOTAL_A); PSB_WVDC32(p->hblank, HBLANK_A); PSB_WVDC32(p->hsync, HSYNC_A); PSB_WVDC32(p->vtotal, VTOTAL_A); PSB_WVDC32(p->vblank, VBLANK_A); PSB_WVDC32(p->vsync, VSYNC_A); PSB_WVDC32(p->src, PIPEASRC); PSB_WVDC32(regs->psb.saveBCLRPAT_A, BCLRPAT_A); /* Restore performance mode*/ PSB_WVDC32(regs->psb.savePERF_MODE, MRST_PERF_MODE); /* Enable the pipe*/ if (dev_priv->iLVDS_enable) PSB_WVDC32(p->conf, PIPEACONF); /* Set up the plane*/ PSB_WVDC32(p->linoff, DSPALINOFF); PSB_WVDC32(p->stride, DSPASTRIDE); PSB_WVDC32(p->tileoff, DSPATILEOFF); /* Enable the plane */ PSB_WVDC32(p->cntr, DSPACNTR); PSB_WVDC32(p->surf, DSPASURF); /* Enable Cursor A */ PSB_WVDC32(regs->psb.saveDSPACURSOR_CTRL, CURACNTR); PSB_WVDC32(regs->psb.saveDSPACURSOR_POS, CURAPOS); PSB_WVDC32(regs->psb.saveDSPACURSOR_BASE, CURABASE); /* Restore palette (gamma) */ for (i = 0; i < 256; i++) PSB_WVDC32(p->palette[i], PALETTE_A + (i << 2)); if (dev_priv->hdmi_priv) oaktrail_hdmi_restore(dev); if (dev_priv->iLVDS_enable) { PSB_WVDC32(regs->saveBLC_PWM_CTL2, BLC_PWM_CTL2); PSB_WVDC32(regs->psb.saveLVDS, LVDS); /*port 61180h*/ PSB_WVDC32(regs->psb.savePFIT_CONTROL, PFIT_CONTROL); PSB_WVDC32(regs->psb.savePFIT_PGM_RATIOS, PFIT_PGM_RATIOS); PSB_WVDC32(regs->psb.savePFIT_AUTO_RATIOS, PFIT_AUTO_RATIOS); PSB_WVDC32(regs->saveBLC_PWM_CTL, BLC_PWM_CTL); PSB_WVDC32(regs->psb.savePP_ON_DELAYS, LVDSPP_ON); PSB_WVDC32(regs->psb.savePP_OFF_DELAYS, LVDSPP_OFF); PSB_WVDC32(regs->psb.savePP_DIVISOR, PP_CYCLE); PSB_WVDC32(regs->psb.savePP_CONTROL, PP_CONTROL); } /* Wait for cycle delay */ do { pp_stat = PSB_RVDC32(PP_STATUS); } while (pp_stat & 0x08000000); /* Wait for panel power up */ do { pp_stat = PSB_RVDC32(PP_STATUS); } while (pp_stat & 0x10000000); /* Restore HW overlay */ PSB_WVDC32(regs->psb.saveOV_OVADD, OV_OVADD); PSB_WVDC32(regs->psb.saveOV_OGAMC0, OV_OGAMC0); PSB_WVDC32(regs->psb.saveOV_OGAMC1, OV_OGAMC1); PSB_WVDC32(regs->psb.saveOV_OGAMC2, OV_OGAMC2); PSB_WVDC32(regs->psb.saveOV_OGAMC3, OV_OGAMC3); PSB_WVDC32(regs->psb.saveOV_OGAMC4, OV_OGAMC4); PSB_WVDC32(regs->psb.saveOV_OGAMC5, OV_OGAMC5); /* DPST registers */ PSB_WVDC32(regs->psb.saveHISTOGRAM_INT_CONTROL_REG, HISTOGRAM_INT_CONTROL); PSB_WVDC32(regs->psb.saveHISTOGRAM_LOGIC_CONTROL_REG, HISTOGRAM_LOGIC_CONTROL); PSB_WVDC32(regs->psb.savePWM_CONTROL_LOGIC, PWM_CONTROL_LOGIC); return 0; } /** * oaktrail_power_down - power down the display island * @dev: our DRM device * * Power down the display interface of our device */ static int oaktrail_power_down(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); u32 pwr_mask ; u32 pwr_sts; pwr_mask = PSB_PWRGT_DISPLAY_MASK; outl(pwr_mask, dev_priv->ospm_base + PSB_PM_SSC); while (true) { pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS); if ((pwr_sts & pwr_mask) == pwr_mask) break; else udelay(10); } return 0; } /* * oaktrail_power_up * * Restore power to the specified island(s) (powergating) */ static int oaktrail_power_up(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); u32 pwr_mask = PSB_PWRGT_DISPLAY_MASK; u32 pwr_sts, pwr_cnt; pwr_cnt = inl(dev_priv->ospm_base + PSB_PM_SSC); pwr_cnt &= ~pwr_mask; outl(pwr_cnt, (dev_priv->ospm_base + PSB_PM_SSC)); while (true) { pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS); if ((pwr_sts & pwr_mask) == 0) break; else udelay(10); } return 0; } /* Oaktrail */ static const struct psb_offset oaktrail_regmap[2] = { { .fp0 = MRST_FPA0, .fp1 = MRST_FPA1, .cntr = DSPACNTR, .conf = PIPEACONF, .src = PIPEASRC, .dpll = MRST_DPLL_A, .htotal = HTOTAL_A, .hblank = HBLANK_A, .hsync = HSYNC_A, .vtotal = VTOTAL_A, .vblank = VBLANK_A, .vsync = VSYNC_A, .stride = DSPASTRIDE, .size = DSPASIZE, .pos = DSPAPOS, .surf = DSPASURF, .addr = MRST_DSPABASE, .base = MRST_DSPABASE, .status = PIPEASTAT, .linoff = DSPALINOFF, .tileoff = DSPATILEOFF, .palette = PALETTE_A, }, { .fp0 = FPB0, .fp1 = FPB1, .cntr = DSPBCNTR, .conf = PIPEBCONF, .src = PIPEBSRC, .dpll = DPLL_B, .htotal = HTOTAL_B, .hblank = HBLANK_B, .hsync = HSYNC_B, .vtotal = VTOTAL_B, .vblank = VBLANK_B, .vsync = VSYNC_B, .stride = DSPBSTRIDE, .size = DSPBSIZE, .pos = DSPBPOS, .surf = DSPBSURF, .addr = DSPBBASE, .base = DSPBBASE, .status = PIPEBSTAT, .linoff = DSPBLINOFF, .tileoff = DSPBTILEOFF, .palette = PALETTE_B, }, }; static int oaktrail_chip_setup(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); int ret; dev_priv->use_msi = true; dev_priv->regmap = oaktrail_regmap; ret = mid_chip_setup(dev); if (ret < 0) return ret; if (!dev_priv->has_gct) { /* Now pull the BIOS data */ psb_intel_opregion_init(dev); psb_intel_init_bios(dev); } gma_intel_setup_gmbus(dev); oaktrail_hdmi_setup(dev); return 0; } static void oaktrail_teardown(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); gma_intel_teardown_gmbus(dev); oaktrail_hdmi_teardown(dev); if (!dev_priv->has_gct) psb_intel_destroy_bios(dev); } const struct psb_ops oaktrail_chip_ops = { .name = "Oaktrail", .pipes = 2, .crtcs = 2, .hdmi_mask = (1 << 1), .lvds_mask = (1 << 0), .sdvo_mask = (1 << 1), .cursor_needs_phys = 0, .sgx_offset = MRST_SGX_OFFSET, .chip_setup = oaktrail_chip_setup, .chip_teardown = oaktrail_teardown, .crtc_helper = &oaktrail_helper_funcs, .output_init = oaktrail_output_init, #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE .backlight_init = oaktrail_backlight_init, #endif .save_regs = oaktrail_save_display_registers, .restore_regs = oaktrail_restore_display_registers, .save_crtc = gma_crtc_save, .restore_crtc = gma_crtc_restore, .power_down = oaktrail_power_down, .power_up = oaktrail_power_up, .i2c_bus = 1, };