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	Fixed MTP to work with TWRP
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								drivers/gpu/drm/gma500/oaktrail_device.c
									
										
									
									
									
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								drivers/gpu/drm/gma500/oaktrail_device.c
									
										
									
									
									
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							|  | @ -0,0 +1,575 @@ | |||
| /**************************************************************************
 | ||||
|  * Copyright (c) 2011, Intel Corporation. | ||||
|  * All Rights Reserved. | ||||
|  * | ||||
|  * This program is free software; you can redistribute it and/or modify it | ||||
|  * under the terms and conditions of the GNU General Public License, | ||||
|  * version 2, as published by the Free Software Foundation. | ||||
|  * | ||||
|  * This program is distributed in the hope it will be useful, but WITHOUT | ||||
|  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||||
|  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for | ||||
|  * more details. | ||||
|  * | ||||
|  * You should have received a copy of the GNU General Public License along with | ||||
|  * this program; if not, write to the Free Software Foundation, Inc., | ||||
|  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | ||||
|  * | ||||
|  **************************************************************************/ | ||||
| 
 | ||||
| #include <linux/backlight.h> | ||||
| #include <linux/module.h> | ||||
| #include <linux/dmi.h> | ||||
| #include <drm/drmP.h> | ||||
| #include <drm/drm.h> | ||||
| #include <drm/gma_drm.h> | ||||
| #include "psb_drv.h" | ||||
| #include "psb_reg.h" | ||||
| #include "psb_intel_reg.h" | ||||
| #include <asm/intel-mid.h> | ||||
| #include <asm/intel_scu_ipc.h> | ||||
| #include "mid_bios.h" | ||||
| #include "intel_bios.h" | ||||
| 
 | ||||
| static int oaktrail_output_init(struct drm_device *dev) | ||||
| { | ||||
| 	struct drm_psb_private *dev_priv = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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); | ||||
| 	DRM_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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	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 = dev->dev_private; | ||||
| 	int ret; | ||||
| 	 | ||||
| 	if (pci_enable_msi(dev->pdev)) | ||||
| 		dev_warn(dev->dev, "Enabling MSI failed!\n"); | ||||
| 
 | ||||
| 	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 = dev->dev_private; | ||||
| 
 | ||||
| 	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", | ||||
| 	.accel_2d = 1, | ||||
| 	.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, | ||||
| 	.crtc_funcs = &psb_intel_crtc_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, | ||||
| 	.power_down = oaktrail_power_down, | ||||
| 	.power_up = oaktrail_power_up, | ||||
| 
 | ||||
| 	.i2c_bus = 1, | ||||
| }; | ||||
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