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linux_dsm_epyc7002/drivers/gpu/drm/gma500/oaktrail_device.c
Thomas Gleixner a61127c213 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 111 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.567572064@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:06 +02:00

566 lines
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// SPDX-License-Identifier: GPL-2.0-only
/**************************************************************************
* Copyright (c) 2011, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#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 = &regs->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 = &regs->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,
.save_crtc = gma_crtc_save,
.restore_crtc = gma_crtc_restore,
.power_down = oaktrail_power_down,
.power_up = oaktrail_power_up,
.i2c_bus = 1,
};
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