---

yaml
---
r: 236080
b: refs/heads/master
c: 0867b42
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 008536e8458613ce569595e43b0e71afa8b48ae8
+refs/heads/master: 0867b42113ec4eb8646eb361b15cbcfb741ddf5b

trunk/drivers/staging/Kconfig

@@ -179,5 +179,7 @@ source "drivers/staging/cptm1217/Kconfig"
 
 source "drivers/staging/ste_rmi4/Kconfig"
 
+source "drivers/staging/gma500/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING

trunk/drivers/staging/Makefile

@@ -61,12 +61,13 @@ obj-$(CONFIG_SOLO6X10)		+= solo6x10/
 obj-$(CONFIG_TIDSPBRIDGE)	+= tidspbridge/
 obj-$(CONFIG_ACPI_QUICKSTART)	+= quickstart/
 obj-$(CONFIG_WESTBRIDGE_ASTORIA)	+= westbridge/astoria/
-obj-$(CONFIG_SBE_2T3E3)	+= sbe-2t3e3/
+obj-$(CONFIG_SBE_2T3E3)		+= sbe-2t3e3/
 obj-$(CONFIG_ATH6K_LEGACY)	+= ath6kl/
 obj-$(CONFIG_USB_ENESTORAGE)	+= keucr/
-obj-$(CONFIG_BCM_WIMAX)	+= bcm/
+obj-$(CONFIG_BCM_WIMAX)		+= bcm/
 obj-$(CONFIG_FT1000)		+= ft1000/
-obj-$(CONFIG_SND_INTEL_SST)		+= intel_sst/
-obj-$(CONFIG_SPEAKUP)	+= speakup/
+obj-$(CONFIG_SND_INTEL_SST)	+= intel_sst/
+obj-$(CONFIG_SPEAKUP)		+= speakup/
 obj-$(CONFIG_TOUCHSCREEN_CLEARPAD_TM1217)	+= cptm1217/
 obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4)	+= ste_rmi4/
+obj-$(CONFIG_DRM_PSB)		+= gma500/

trunk/drivers/staging/gma500/Kconfig

@@ -0,0 +1,12 @@
+config DRM_PSB
+	tristate "Intel GMA500 KMS Framebuffer"
+	depends on DRM && PCI
+	select FB_CFB_COPYAREA
+        select FB_CFB_FILLRECT
+        select FB_CFB_IMAGEBLIT
+        select DRM_KMS_HELPER
+        select DRM_TTM
+	help
+	  Say yes for an experimental KMS framebuffer driver for the
+	  Intel GMA500 ('Poulsbo') graphics support.
+

trunk/drivers/staging/gma500/Makefile

@@ -0,0 +1,30 @@
+#
+#	KMS driver for the GMA500
+#
+ccflags-y += -Iinclude/drm
+
+psb_gfx-y += psb_bl.o \
+	  psb_drv.o \
+	  psb_fb.o \
+	  psb_gtt.o \
+	  psb_intel_bios.o \
+	  psb_intel_opregion.o \
+	  psb_intel_display.o \
+	  psb_intel_i2c.o \
+	  psb_intel_lvds.o \
+	  psb_intel_modes.o \
+	  psb_intel_sdvo.o \
+	  psb_reset.o \
+	  psb_sgx.o \
+	  psb_pvr_glue.o \
+	  psb_buffer.o \
+	  psb_fence.o \
+	  psb_mmu.o \
+	  psb_ttm_glue.o \
+	  psb_ttm_fence.o \
+	  psb_ttm_fence_user.o \
+	  psb_ttm_placement_user.o \
+	  psb_powermgmt.o \
+	  psb_irq.o
+
+obj-$(CONFIG_DRM_PSB) += psb_gfx.o

trunk/drivers/staging/gma500/TODO

@@ -0,0 +1,26 @@
+-	Test on more platforms
+-	Clean up the various chunks of unused code
+-	Sort out the power management side. Not important for Poulsbo but
+	matters for Moorestown
+-	Add Moorestown support (single pipe, no BIOS, no stolen memory,
+				some other differences)
+-	Sort out the bo and ttm code to support userframe buffers and DRM
+	interfaces rather than just faking it enough for a framebuffer
+-	Add 2D acceleration via console and DRM
+
+As per kernel policy and the in the interest of the safety of various
+kittens there is no support or plans to add hooks for the closed user space
+stuff.
+
+
+Why bother ?
+- Proper display configuration
+- Can be made to work on Moorestown where VESA won't
+- Works on systems where the VESA BIOS is bust or the tables are broken
+  without hacks
+- 2D acceleration
+
+Currently tested on
++	Dell Mini 10 100x600
+
+

trunk/drivers/staging/gma500/psb_bl.c

@@ -0,0 +1,167 @@
+/*
+ *  psb backlight using HAL
+ *
+ * Copyright (c) 2009, 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: Eric Knopp
+ *
+ */
+
+#include <linux/backlight.h>
+#include <linux/version.h>
+#include "psb_drv.h"
+#include "psb_intel_reg.h"
+#include "psb_intel_drv.h"
+#include "psb_intel_bios.h"
+#include "psb_powermgmt.h"
+
+#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 BRIGHTNESS_MIN_LEVEL 1
+#define BRIGHTNESS_MAX_LEVEL 100
+#define BRIGHTNESS_MASK	0xFF
+#define BLC_POLARITY_NORMAL 0
+#define BLC_POLARITY_INVERSE 1
+#define BLC_ADJUSTMENT_MAX 100
+
+#define PSB_BLC_PWM_PRECISION_FACTOR    10
+#define PSB_BLC_MAX_PWM_REG_FREQ        0xFFFE
+#define PSB_BLC_MIN_PWM_REG_FREQ        0x2
+
+#define PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR (0xFFFE)
+#define PSB_BACKLIGHT_PWM_CTL_SHIFT	(16)
+
+static int psb_brightness;
+static struct backlight_device *psb_backlight_device;
+static u8 blc_brightnesscmd;
+static u8 blc_pol;
+static u8 blc_type;
+
+int psb_set_brightness(struct backlight_device *bd)
+{
+	struct drm_device *dev = bl_get_data(psb_backlight_device);
+	int level = bd->props.brightness;
+
+	DRM_DEBUG_DRIVER("backlight level set to %d\n", level);
+
+	/* Perform value bounds checking */
+	if (level < BRIGHTNESS_MIN_LEVEL)
+		level = BRIGHTNESS_MIN_LEVEL;
+
+	psb_intel_lvds_set_brightness(dev, level);
+	psb_brightness = level;
+	return 0;
+}
+
+int psb_get_brightness(struct backlight_device *bd)
+{
+	DRM_DEBUG_DRIVER("brightness = 0x%x\n", psb_brightness);
+
+	/* return locally cached var instead of HW read (due to DPST etc.) */
+	return psb_brightness;
+}
+
+static const struct backlight_ops psb_ops = {
+	.get_brightness = psb_get_brightness,
+	.update_status  = psb_set_brightness,
+};
+
+static int device_backlight_init(struct drm_device *dev)
+{
+	unsigned long CoreClock;
+	/* u32 bl_max_freq; */
+	/* unsigned long value; */
+	u16 bl_max_freq;
+	uint32_t value;
+	uint32_t blc_pwm_precision_factor;
+	struct drm_psb_private *dev_priv = dev->dev_private;
+
+	/* get bl_max_freq and pol from dev_priv*/
+	if (!dev_priv->lvds_bl) {
+		DRM_ERROR("Has no valid LVDS backlight info\n");
+		return 1;
+	}
+	bl_max_freq = dev_priv->lvds_bl->freq;
+	blc_pol = dev_priv->lvds_bl->pol;
+	blc_pwm_precision_factor = PSB_BLC_PWM_PRECISION_FACTOR;
+	blc_brightnesscmd = dev_priv->lvds_bl->brightnesscmd;
+	blc_type = dev_priv->lvds_bl->type;
+
+	CoreClock = dev_priv->core_freq;
+
+	value = (CoreClock * MHz) / BLC_PWM_FREQ_CALC_CONSTANT;
+	value *= blc_pwm_precision_factor;
+	value /= bl_max_freq;
+	value /= blc_pwm_precision_factor;
+
+	if (ospm_power_using_hw_begin(OSPM_DISPLAY_ISLAND,
+						OSPM_UHB_ONLY_IF_ON)) {
+		/* Check: may be MFLD only */
+		if (
+		 value > (unsigned long long)PSB_BLC_MAX_PWM_REG_FREQ ||
+		 value < (unsigned long long)PSB_BLC_MIN_PWM_REG_FREQ)
+			return 2;
+		else {
+			value &= PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR;
+			REG_WRITE(BLC_PWM_CTL,
+				(value << PSB_BACKLIGHT_PWM_CTL_SHIFT) |
+				(value));
+		}
+		ospm_power_using_hw_end(OSPM_DISPLAY_ISLAND);
+	}
+	return 0;
+}
+
+int psb_backlight_init(struct drm_device *dev)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+	int ret = 0;
+
+	struct backlight_properties props;
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.max_brightness = BRIGHTNESS_MAX_LEVEL;
+
+	psb_backlight_device = backlight_device_register("psb-bl", NULL,
+						(void *)dev, &psb_ops, &props);
+	if (IS_ERR(psb_backlight_device))
+		return PTR_ERR(psb_backlight_device);
+
+	ret = device_backlight_init(dev);
+	if (ret < 0)
+		return ret;
+
+	psb_backlight_device->props.brightness = BRIGHTNESS_MAX_LEVEL;
+	psb_backlight_device->props.max_brightness = BRIGHTNESS_MAX_LEVEL;
+	backlight_update_status(psb_backlight_device);
+#endif
+	return 0;
+}
+
+void psb_backlight_exit(void)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+	psb_backlight_device->props.brightness = 0;
+	backlight_update_status(psb_backlight_device);
+	backlight_device_unregister(psb_backlight_device);
+#endif
+}
+
+struct backlight_device *psb_get_backlight_device(void)
+{
+	return psb_backlight_device;
+}