diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0128--ARM-goldfish-fb-Add-fb-driver-for-goldfish.patch')
-rw-r--r-- | target/linux/goldfish/patches-2.6.30/0128--ARM-goldfish-fb-Add-fb-driver-for-goldfish.patch | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0128--ARM-goldfish-fb-Add-fb-driver-for-goldfish.patch b/target/linux/goldfish/patches-2.6.30/0128--ARM-goldfish-fb-Add-fb-driver-for-goldfish.patch deleted file mode 100644 index 48e69da..0000000 --- a/target/linux/goldfish/patches-2.6.30/0128--ARM-goldfish-fb-Add-fb-driver-for-goldfish.patch +++ /dev/null @@ -1,384 +0,0 @@ -From f8101c780fdc050eda9f93c94f8841de9f384b4f Mon Sep 17 00:00:00 2001 -From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@google.com> -Date: Fri, 29 Jun 2007 22:14:27 -0700 -Subject: [PATCH 128/134] [ARM] goldfish: fb: Add fb driver for goldfish. -MIME-Version: 1.0 -Content-Type: text/plain; charset=utf-8 -Content-Transfer-Encoding: 8bit - -Supports panning for double buffering. - -Signed-off-by: Mike A. Chan <mikechan@google.com> -Signed-off-by: Arve Hjønnevåg <arve@android.com> ---- - drivers/video/Kconfig | 9 ++ - drivers/video/Makefile | 1 + - drivers/video/goldfishfb.c | 334 ++++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 344 insertions(+), 0 deletions(-) - create mode 100644 drivers/video/goldfishfb.c - ---- a/drivers/video/Kconfig -+++ b/drivers/video/Kconfig -@@ -2005,6 +2005,15 @@ config FB_XILINX - framebuffer. ML300 carries a 640*480 LCD display on the board, - ML403 uses a standard DB15 VGA connector. - -+config FB_GOLDFISH -+ tristate "Goldfish Framebuffer" -+ depends on FB -+ select FB_CFB_FILLRECT -+ select FB_CFB_COPYAREA -+ select FB_CFB_IMAGEBLIT -+ ---help--- -+ Framebuffer driver for Goldfish Virtual Platform -+ - config FB_COBALT - tristate "Cobalt server LCD frame buffer support" - depends on FB && MIPS_COBALT ---- a/drivers/video/Makefile -+++ b/drivers/video/Makefile -@@ -92,6 +92,7 @@ obj-$(CONFIG_FB_ATMEL) += atmel_lcdfb - obj-$(CONFIG_FB_PVR2) += pvr2fb.o - obj-$(CONFIG_FB_VOODOO1) += sstfb.o - obj-$(CONFIG_FB_ARMCLCD) += amba-clcd.o -+obj-$(CONFIG_FB_GOLDFISH) += goldfishfb.o - obj-$(CONFIG_FB_68328) += 68328fb.o - obj-$(CONFIG_FB_GBE) += gbefb.o - obj-$(CONFIG_FB_CIRRUS) += cirrusfb.o ---- /dev/null -+++ b/drivers/video/goldfishfb.c -@@ -0,0 +1,334 @@ -+/* drivers/video/goldfishfb.c -+** -+** Copyright (C) 2007 Google, Inc. -+** -+** This software is licensed under the terms of the GNU General Public -+** License version 2, as published by the Free Software Foundation, and -+** may be copied, distributed, and modified under those terms. -+** -+** This program is distributed in the hope that 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. -+** -+*/ -+ -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/dma-mapping.h> -+#include <linux/errno.h> -+#include <linux/string.h> -+#include <linux/slab.h> -+#include <linux/delay.h> -+#include <linux/mm.h> -+#include <linux/fb.h> -+#include <linux/init.h> -+#include <linux/interrupt.h> -+#include <linux/ioport.h> -+#include <linux/platform_device.h> -+#ifdef CONFIG_ANDROID_POWER -+#include <linux/android_power.h> -+#endif -+ -+#include <mach/hardware.h> -+ -+enum { -+ FB_GET_WIDTH = 0x00, -+ FB_GET_HEIGHT = 0x04, -+ FB_INT_STATUS = 0x08, -+ FB_INT_ENABLE = 0x0c, -+ FB_SET_BASE = 0x10, -+ FB_SET_ROTATION = 0x14, -+ FB_SET_BLANK = 0x18, -+ FB_GET_PHYS_WIDTH = 0x1c, -+ FB_GET_PHYS_HEIGHT = 0x20, -+ -+ FB_INT_VSYNC = 1U << 0, -+ FB_INT_BASE_UPDATE_DONE = 1U << 1 -+}; -+ -+struct goldfish_fb { -+ uint32_t reg_base; -+ int irq; -+ spinlock_t lock; -+ wait_queue_head_t wait; -+ int base_update_count; -+ int rotation; -+ struct fb_info fb; -+ u32 cmap[16]; -+#ifdef CONFIG_ANDROID_POWER -+ android_early_suspend_t early_suspend; -+#endif -+}; -+ -+static irqreturn_t -+goldfish_fb_interrupt(int irq, void *dev_id) -+{ -+ unsigned long irq_flags; -+ struct goldfish_fb *fb = dev_id; -+ uint32_t status; -+ -+ spin_lock_irqsave(&fb->lock, irq_flags); -+ status = readl(fb->reg_base + FB_INT_STATUS); -+ if(status & FB_INT_BASE_UPDATE_DONE) { -+ fb->base_update_count++; -+ wake_up(&fb->wait); -+ } -+ spin_unlock_irqrestore(&fb->lock, irq_flags); -+ return status ? IRQ_HANDLED : IRQ_NONE; -+} -+ -+static inline u32 convert_bitfield(int val, struct fb_bitfield *bf) -+{ -+ unsigned int mask = (1 << bf->length) - 1; -+ -+ return (val >> (16 - bf->length) & mask) << bf->offset; -+} -+ -+static int -+goldfish_fb_setcolreg(unsigned int regno, unsigned int red, unsigned int green, -+ unsigned int blue, unsigned int transp, struct fb_info *info) -+{ -+ struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb); -+ -+ if (regno < 16) { -+ fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) | -+ convert_bitfield(blue, &fb->fb.var.blue) | -+ convert_bitfield(green, &fb->fb.var.green) | -+ convert_bitfield(red, &fb->fb.var.red); -+ return 0; -+ } -+ else { -+ return 1; -+ } -+} -+ -+static int goldfish_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) -+{ -+ if((var->rotate & 1) != (info->var.rotate & 1)) { -+ if((var->xres != info->var.yres) || -+ (var->yres != info->var.xres) || -+ (var->xres_virtual != info->var.yres) || -+ (var->yres_virtual > info->var.xres * 2) || -+ (var->yres_virtual < info->var.xres )) { -+ return -EINVAL; -+ } -+ } -+ else { -+ if((var->xres != info->var.xres) || -+ (var->yres != info->var.yres) || -+ (var->xres_virtual != info->var.xres) || -+ (var->yres_virtual > info->var.yres * 2) || -+ (var->yres_virtual < info->var.yres )) { -+ return -EINVAL; -+ } -+ } -+ if((var->xoffset != info->var.xoffset) || -+ (var->bits_per_pixel != info->var.bits_per_pixel) || -+ (var->grayscale != info->var.grayscale)) { -+ return -EINVAL; -+ } -+ return 0; -+} -+ -+static int goldfish_fb_set_par(struct fb_info *info) -+{ -+ struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb); -+ if(fb->rotation != fb->fb.var.rotate) { -+ info->fix.line_length = info->var.xres * 2; -+ fb->rotation = fb->fb.var.rotate; -+ writel(fb->rotation, fb->reg_base + FB_SET_ROTATION); -+ } -+ return 0; -+} -+ -+ -+static int goldfish_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) -+{ -+ unsigned long irq_flags; -+ int base_update_count; -+ struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb); -+ -+ spin_lock_irqsave(&fb->lock, irq_flags); -+ base_update_count = fb->base_update_count; -+ writel(fb->fb.fix.smem_start + fb->fb.var.xres * 2 * var->yoffset, fb->reg_base + FB_SET_BASE); -+ spin_unlock_irqrestore(&fb->lock, irq_flags); -+ wait_event_timeout(fb->wait, fb->base_update_count != base_update_count, HZ / 15); -+ if(fb->base_update_count == base_update_count) -+ printk("goldfish_fb_pan_display: timeout wating for base update\n"); -+ return 0; -+} -+ -+#ifdef CONFIG_ANDROID_POWER -+static void goldfish_fb_early_suspend(android_early_suspend_t *h) -+{ -+ struct goldfish_fb *fb = container_of(h, struct goldfish_fb, early_suspend); -+ writel(1, fb->reg_base + FB_SET_BLANK); -+} -+ -+static void goldfish_fb_late_resume(android_early_suspend_t *h) -+{ -+ struct goldfish_fb *fb = container_of(h, struct goldfish_fb, early_suspend); -+ writel(0, fb->reg_base + FB_SET_BLANK); -+} -+#endif -+ -+static struct fb_ops goldfish_fb_ops = { -+ .owner = THIS_MODULE, -+ .fb_check_var = goldfish_fb_check_var, -+ .fb_set_par = goldfish_fb_set_par, -+ .fb_setcolreg = goldfish_fb_setcolreg, -+ .fb_pan_display = goldfish_fb_pan_display, -+ .fb_fillrect = cfb_fillrect, -+ .fb_copyarea = cfb_copyarea, -+ .fb_imageblit = cfb_imageblit, -+}; -+ -+ -+static int goldfish_fb_probe(struct platform_device *pdev) -+{ -+ int ret; -+ struct resource *r; -+ struct goldfish_fb *fb; -+ size_t framesize; -+ uint32_t width, height; -+ dma_addr_t fbpaddr; -+ -+ fb = kzalloc(sizeof(*fb), GFP_KERNEL); -+ if(fb == NULL) { -+ ret = -ENOMEM; -+ goto err_fb_alloc_failed; -+ } -+ spin_lock_init(&fb->lock); -+ init_waitqueue_head(&fb->wait); -+ platform_set_drvdata(pdev, fb); -+ -+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if(r == NULL) { -+ ret = -ENODEV; -+ goto err_no_io_base; -+ } -+ fb->reg_base = IO_ADDRESS(r->start - IO_START); -+ -+ fb->irq = platform_get_irq(pdev, 0); -+ if(fb->irq < 0) { -+ ret = -ENODEV; -+ goto err_no_irq; -+ } -+ -+ width = readl(fb->reg_base + FB_GET_WIDTH); -+ height = readl(fb->reg_base + FB_GET_HEIGHT); -+ -+ fb->fb.fbops = &goldfish_fb_ops; -+ fb->fb.flags = FBINFO_FLAG_DEFAULT; -+ fb->fb.pseudo_palette = fb->cmap; -+ //strncpy(fb->fb.fix.id, clcd_name, sizeof(fb->fb.fix.id)); -+ fb->fb.fix.type = FB_TYPE_PACKED_PIXELS; -+ fb->fb.fix.visual = FB_VISUAL_TRUECOLOR; -+ fb->fb.fix.line_length = width * 2; -+ fb->fb.fix.accel = FB_ACCEL_NONE; -+ fb->fb.fix.ypanstep = 1; -+ -+ fb->fb.var.xres = width; -+ fb->fb.var.yres = height; -+ fb->fb.var.xres_virtual = width; -+ fb->fb.var.yres_virtual = height * 2; -+ fb->fb.var.bits_per_pixel = 16; -+ fb->fb.var.activate = FB_ACTIVATE_NOW; -+ fb->fb.var.height = readl(fb->reg_base + FB_GET_PHYS_HEIGHT); -+ fb->fb.var.width = readl(fb->reg_base + FB_GET_PHYS_WIDTH); -+ -+ fb->fb.var.red.offset = 11; -+ fb->fb.var.red.length = 5; -+ fb->fb.var.green.offset = 5; -+ fb->fb.var.green.length = 6; -+ fb->fb.var.blue.offset = 0; -+ fb->fb.var.blue.length = 5; -+ -+ framesize = width * height * 2 * 2; -+ fb->fb.screen_base = dma_alloc_writecombine(&pdev->dev, framesize, -+ &fbpaddr, GFP_KERNEL); -+ printk("allocating frame buffer %d * %d, got %p\n", width, height, fb->fb.screen_base); -+ if(fb->fb.screen_base == 0) { -+ ret = -ENOMEM; -+ goto err_alloc_screen_base_failed; -+ } -+ fb->fb.fix.smem_start = fbpaddr; -+ fb->fb.fix.smem_len = framesize; -+ -+ ret = fb_set_var(&fb->fb, &fb->fb.var); -+ if(ret) -+ goto err_fb_set_var_failed; -+ -+ ret = request_irq(fb->irq, goldfish_fb_interrupt, IRQF_SHARED, pdev->name, fb); -+ if(ret) -+ goto err_request_irq_failed; -+ -+ writel(FB_INT_BASE_UPDATE_DONE, fb->reg_base + FB_INT_ENABLE); -+ goldfish_fb_pan_display(&fb->fb.var, &fb->fb); // updates base -+ -+ ret = register_framebuffer(&fb->fb); -+ if(ret) -+ goto err_register_framebuffer_failed; -+ -+#ifdef CONFIG_ANDROID_POWER -+ fb->early_suspend.suspend = goldfish_fb_early_suspend; -+ fb->early_suspend.resume = goldfish_fb_late_resume; -+ android_register_early_suspend(&fb->early_suspend); -+#endif -+ -+ return 0; -+ -+ -+err_register_framebuffer_failed: -+ free_irq(fb->irq, fb); -+err_request_irq_failed: -+err_fb_set_var_failed: -+ dma_free_writecombine(&pdev->dev, framesize, fb->fb.screen_base, fb->fb.fix.smem_start); -+err_alloc_screen_base_failed: -+err_no_irq: -+err_no_io_base: -+ kfree(fb); -+err_fb_alloc_failed: -+ return ret; -+} -+ -+static int goldfish_fb_remove(struct platform_device *pdev) -+{ -+ size_t framesize; -+ struct goldfish_fb *fb = platform_get_drvdata(pdev); -+ -+ framesize = fb->fb.var.xres_virtual * fb->fb.var.yres_virtual * 2; -+ -+#ifdef CONFIG_ANDROID_POWER -+ android_unregister_early_suspend(&fb->early_suspend); -+#endif -+ unregister_framebuffer(&fb->fb); -+ free_irq(fb->irq, fb); -+ dma_free_writecombine(&pdev->dev, framesize, fb->fb.screen_base, fb->fb.fix.smem_start); -+ kfree(fb); -+ return 0; -+} -+ -+ -+static struct platform_driver goldfish_fb_driver = { -+ .probe = goldfish_fb_probe, -+ .remove = goldfish_fb_remove, -+ .driver = { -+ .name = "goldfish_fb" -+ } -+}; -+ -+static int __init goldfish_fb_init(void) -+{ -+ return platform_driver_register(&goldfish_fb_driver); -+} -+ -+static void __exit goldfish_fb_exit(void) -+{ -+ platform_driver_unregister(&goldfish_fb_driver); -+} -+ -+module_init(goldfish_fb_init); -+module_exit(goldfish_fb_exit); -+ |