From 89c78134cc54dff016c83367912eb055637fa50c Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 3 Nov 2011 18:22:15 +0000 Subject: gma500: Add Poulsbo support This provides the specific code for Poulsbo, some of which is also used for the later chipsets. We support the GTT, the 2D engine (for console), and the display setup/management. We do not support 3D or the video overlays. In theory enough public info is available to do the video overlay work but that represents a large task. Framebuffer X will run nicely with this but do *NOT* use the VESA X server at the same time as KMS. With a Dell mini 10 things like Xfce4 are nice and usable even when compositing as the CPU has a good path to the memory. Signed-off-by: Alan Cox Signed-off-by: Dave Airlie --- drivers/gpu/drm/gma500/psb_lid.c | 90 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 drivers/gpu/drm/gma500/psb_lid.c (limited to 'drivers/gpu/drm/gma500/psb_lid.c') diff --git a/drivers/gpu/drm/gma500/psb_lid.c b/drivers/gpu/drm/gma500/psb_lid.c new file mode 100644 index 000000000000..af328516561e --- /dev/null +++ b/drivers/gpu/drm/gma500/psb_lid.c @@ -0,0 +1,90 @@ +/************************************************************************** + * Copyright (c) 2007, Intel Corporation. + * + * 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. + * + * Authors: Thomas Hellstrom + **************************************************************************/ + +#include +#include "psb_drv.h" +#include "psb_reg.h" +#include "psb_intel_reg.h" +#include + +static void psb_lid_timer_func(unsigned long data) +{ + struct drm_psb_private * dev_priv = (struct drm_psb_private *)data; + struct drm_device *dev = (struct drm_device *)dev_priv->dev; + struct timer_list *lid_timer = &dev_priv->lid_timer; + unsigned long irq_flags; + u32 *lid_state = dev_priv->lid_state; + u32 pp_status; + + if (readl(lid_state) == dev_priv->lid_last_state) + goto lid_timer_schedule; + + if ((readl(lid_state)) & 0x01) { + /*lid state is open*/ + REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | POWER_TARGET_ON); + do { + pp_status = REG_READ(PP_STATUS); + } while ((pp_status & PP_ON) == 0); + + /*FIXME: should be backlight level before*/ + psb_intel_lvds_set_brightness(dev, 100); + } else { + psb_intel_lvds_set_brightness(dev, 0); + + REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & ~POWER_TARGET_ON); + do { + pp_status = REG_READ(PP_STATUS); + } while ((pp_status & PP_ON) == 0); + } + /* printk(KERN_INFO"%s: lid: closed\n", __FUNCTION__); */ + + dev_priv->lid_last_state = readl(lid_state); + +lid_timer_schedule: + spin_lock_irqsave(&dev_priv->lid_lock, irq_flags); + if (!timer_pending(lid_timer)) { + lid_timer->expires = jiffies + PSB_LID_DELAY; + add_timer(lid_timer); + } + spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags); +} + +void psb_lid_timer_init(struct drm_psb_private *dev_priv) +{ + struct timer_list *lid_timer = &dev_priv->lid_timer; + unsigned long irq_flags; + + spin_lock_init(&dev_priv->lid_lock); + spin_lock_irqsave(&dev_priv->lid_lock, irq_flags); + + init_timer(lid_timer); + + lid_timer->data = (unsigned long)dev_priv; + lid_timer->function = psb_lid_timer_func; + lid_timer->expires = jiffies + PSB_LID_DELAY; + + add_timer(lid_timer); + spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags); +} + +void psb_lid_timer_takedown(struct drm_psb_private *dev_priv) +{ + del_timer_sync(&dev_priv->lid_timer); +} + -- cgit v1.2.2