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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 01/10] arm: remove the ARM HDLCD driver
The ARM HDLCD driver is unused. The device itself can only be found on
Virtual Express boards that are for early development only. Remove the
driver.
Suggested-by: Julien Grall <julien.grall@xxxxxxx>
Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
Changes in v2:
- patch added
---
xen/arch/arm/Kconfig | 1 -
xen/drivers/video/Kconfig | 3 -
xen/drivers/video/Makefile | 1 -
xen/drivers/video/arm_hdlcd.c | 281 ------------------------------------------
4 files changed, 286 deletions(-)
delete mode 100644 xen/drivers/video/arm_hdlcd.c
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 8174c0c..cbd9f1b 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -17,7 +17,6 @@ config ARM_64
config ARM
def_bool y
select HAS_ALTERNATIVE
- select HAS_ARM_HDLCD
select HAS_DEVICE_TREE
select HAS_MEM_ACCESS
select HAS_PASSTHROUGH
diff --git a/xen/drivers/video/Kconfig b/xen/drivers/video/Kconfig
index 52e8ce6..41ca503 100644
--- a/xen/drivers/video/Kconfig
+++ b/xen/drivers/video/Kconfig
@@ -11,6 +11,3 @@ config VGA
Enable VGA output for the Xen hypervisor.
If unsure, say Y.
-
-config HAS_ARM_HDLCD
- bool
diff --git a/xen/drivers/video/Makefile b/xen/drivers/video/Makefile
index 2bb91d6..2b3fc76 100644
--- a/xen/drivers/video/Makefile
+++ b/xen/drivers/video/Makefile
@@ -4,4 +4,3 @@ obj-$(CONFIG_VIDEO) += font_8x16.o
obj-$(CONFIG_VIDEO) += font_8x8.o
obj-$(CONFIG_VIDEO) += lfb.o
obj-$(CONFIG_VGA) += vesa.o
-obj-$(CONFIG_HAS_ARM_HDLCD) += arm_hdlcd.o
diff --git a/xen/drivers/video/arm_hdlcd.c b/xen/drivers/video/arm_hdlcd.c
deleted file mode 100644
index e1174b2..0000000
--- a/xen/drivers/video/arm_hdlcd.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * xen/drivers/video/arm_hdlcd.c
- *
- * Driver for ARM HDLCD Controller
- *
- * Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
- * Copyright (c) 2013 Citrix Systems.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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 <asm/delay.h>
-#include <asm/types.h>
-#include <asm/platforms/vexpress.h>
-#include <xen/device_tree.h>
-#include <xen/libfdt/libfdt.h>
-#include <xen/init.h>
-#include <xen/mm.h>
-#include "font.h"
-#include "lfb.h"
-#include "modelines.h"
-
-#define HDLCD ((volatile uint32_t *) FIXMAP_ADDR(FIXMAP_MISC))
-
-#define HDLCD_INTMASK (0x18/4)
-#define HDLCD_FBBASE (0x100/4)
-#define HDLCD_LINELENGTH (0x104/4)
-#define HDLCD_LINECOUNT (0x108/4)
-#define HDLCD_LINEPITCH (0x10C/4)
-#define HDLCD_BUS (0x110/4)
-#define HDLCD_VSYNC (0x200/4)
-#define HDLCD_VBACK (0x204/4)
-#define HDLCD_VDATA (0x208/4)
-#define HDLCD_VFRONT (0x20C/4)
-#define HDLCD_HSYNC (0x210/4)
-#define HDLCD_HBACK (0x214/4)
-#define HDLCD_HDATA (0x218/4)
-#define HDLCD_HFRONT (0x21C/4)
-#define HDLCD_POLARITIES (0x220/4)
-#define HDLCD_COMMAND (0x230/4)
-#define HDLCD_PF (0x240/4)
-#define HDLCD_RED (0x244/4)
-#define HDLCD_GREEN (0x248/4)
-#define HDLCD_BLUE (0x24C/4)
-
-struct color_masks {
- int red_shift;
- int red_size;
- int green_shift;
- int green_size;
- int blue_shift;
- int blue_size;
-};
-
-struct pixel_colors {
- const char* bpp;
- struct color_masks colors;
-};
-
-struct pixel_colors __initdata colors[] = {
- { "16", { 0, 5, 11, 5, 6, 5 } },
- { "24", { 0, 8, 16, 8, 8, 8 } },
- { "32", { 0, 8, 16, 8, 8, 8 } },
-};
-
-static void vga_noop_puts(const char *s) {}
-void (*video_puts)(const char *) = vga_noop_puts;
-
-static void hdlcd_flush(void)
-{
- dsb(sy);
-}
-
-static int __init get_color_masks(const char* bpp, struct color_masks **masks)
-{
- int i;
- for ( i = 0; i < ARRAY_SIZE(colors); i++ )
- {
- if ( !strncmp(colors[i].bpp, bpp, 2) )
- {
- *masks = &colors[i].colors;
- return 0;
- }
- }
- return -1;
-}
-
-static void __init set_pixclock(uint32_t pixclock)
-{
- if ( dt_find_compatible_node(NULL, NULL, "arm,vexpress") )
- vexpress_syscfg(1, V2M_SYS_CFG_OSC_FUNC,
- V2M_SYS_CFG_OSC5, &pixclock);
-}
-
-void __init video_init(void)
-{
- struct lfb_prop lfbp;
- unsigned char *lfb;
- paddr_t hdlcd_start, hdlcd_size;
- paddr_t framebuffer_start, framebuffer_size;
- const char *mode_string;
- char _mode_string[16];
- int bytes_per_pixel = 4;
- struct color_masks *c = NULL;
- struct modeline *videomode = NULL;
- int i;
- const struct dt_device_node *dev;
- const __be32 *cells;
- u32 lenp;
- int res;
-
- dev = dt_find_compatible_node(NULL, NULL, "arm,hdlcd");
-
- if ( !dev )
- {
- printk("HDLCD: Cannot find node compatible with \"arm,hdcld\"\n");
- return;
- }
-
- res = dt_device_get_address(dev, 0, &hdlcd_start, &hdlcd_size);
- if ( !res )
- {
- printk("HDLCD: Unable to retrieve MMIO base address\n");
- return;
- }
-
- cells = dt_get_property(dev, "framebuffer", &lenp);
- if ( !cells )
- {
- printk("HDLCD: Unable to retrieve framebuffer property\n");
- return;
- }
-
- framebuffer_start = dt_next_cell(dt_n_addr_cells(dev), &cells);
- framebuffer_size = dt_next_cell(dt_n_size_cells(dev), &cells);
-
- if ( !hdlcd_start )
- {
- printk(KERN_ERR "HDLCD: address missing from device tree, disabling
driver\n");
- return;
- }
-
- if ( !framebuffer_start )
- {
- printk(KERN_ERR "HDLCD: framebuffer address missing from device tree,
disabling driver\n");
- return;
- }
-
- res = dt_property_read_string(dev, "mode", &mode_string);
- if ( res )
- {
- get_color_masks("32", &c);
- memcpy(_mode_string, "1280x1024@60", strlen("1280x1024@60") + 1);
- bytes_per_pixel = 4;
- }
- else if ( strlen(mode_string) < strlen("800x600@60") ||
- strlen(mode_string) > sizeof(_mode_string) - 1 )
- {
- printk(KERN_ERR "HDLCD: invalid modeline=%s\n", mode_string);
- return;
- } else {
- char *s = strchr(mode_string, '-');
- if ( !s )
- {
- printk(KERN_INFO "HDLCD: bpp not found in modeline %s, assume 32
bpp\n",
- mode_string);
- get_color_masks("32", &c);
- memcpy(_mode_string, mode_string, strlen(mode_string) + 1);
- bytes_per_pixel = 4;
- } else {
- if ( strlen(s) < 6 )
- {
- printk(KERN_ERR "HDLCD: invalid mode %s\n", mode_string);
- return;
- }
- s++;
- if ( get_color_masks(s, &c) < 0 )
- {
- printk(KERN_WARNING "HDLCD: unsupported bpp %s\n", s);
- return;
- }
- bytes_per_pixel = simple_strtoll(s, NULL, 10) / 8;
- }
- i = s - mode_string - 1;
- memcpy(_mode_string, mode_string, i);
- memcpy(_mode_string + i, mode_string + i + 3, 4);
- }
-
- for ( i = 0; i < ARRAY_SIZE(videomodes); i++ ) {
- if ( !strcmp(_mode_string, videomodes[i].mode) )
- {
- videomode = &videomodes[i];
- break;
- }
- }
- if ( !videomode )
- {
- printk(KERN_WARNING "HDLCD: unsupported videomode %s\n",
- _mode_string);
- return;
- }
-
- if ( framebuffer_size < bytes_per_pixel * videomode->xres *
videomode->yres )
- {
- printk(KERN_ERR "HDLCD: the framebuffer is too small, disabling the
HDLCD driver\n");
- return;
- }
-
- printk(KERN_INFO "Initializing HDLCD driver\n");
-
- lfb = ioremap_wc(framebuffer_start, framebuffer_size);
- if ( !lfb )
- {
- printk(KERN_ERR "Couldn't map the framebuffer\n");
- return;
- }
- memset(lfb, 0x00, bytes_per_pixel * videomode->xres * videomode->yres);
-
- /* uses FIXMAP_MISC */
- set_pixclock(videomode->pixclock);
-
- set_fixmap(FIXMAP_MISC, maddr_to_mfn(hdlcd_start),
PAGE_HYPERVISOR_NOCACHE);
- HDLCD[HDLCD_COMMAND] = 0;
-
- HDLCD[HDLCD_LINELENGTH] = videomode->xres * bytes_per_pixel;
- HDLCD[HDLCD_LINECOUNT] = videomode->yres - 1;
- HDLCD[HDLCD_LINEPITCH] = videomode->xres * bytes_per_pixel;
- HDLCD[HDLCD_PF] = ((bytes_per_pixel - 1) << 3);
- HDLCD[HDLCD_INTMASK] = 0;
- HDLCD[HDLCD_FBBASE] = framebuffer_start;
- HDLCD[HDLCD_BUS] = 0xf00 | (1 << 4);
- HDLCD[HDLCD_VBACK] = videomode->vback - 1;
- HDLCD[HDLCD_VSYNC] = videomode->vsync - 1;
- HDLCD[HDLCD_VDATA] = videomode->yres - 1;
- HDLCD[HDLCD_VFRONT] = videomode->vfront - 1;
- HDLCD[HDLCD_HBACK] = videomode->hback - 1;
- HDLCD[HDLCD_HSYNC] = videomode->hsync - 1;
- HDLCD[HDLCD_HDATA] = videomode->xres - 1;
- HDLCD[HDLCD_HFRONT] = videomode->hfront - 1;
- HDLCD[HDLCD_POLARITIES] = (1 << 2) | (1 << 3);
- HDLCD[HDLCD_RED] = (c->red_size << 8) | c->red_shift;
- HDLCD[HDLCD_GREEN] = (c->green_size << 8) | c->green_shift;
- HDLCD[HDLCD_BLUE] = (c->blue_size << 8) | c->blue_shift;
- HDLCD[HDLCD_COMMAND] = 1;
- clear_fixmap(FIXMAP_MISC);
-
- lfbp.pixel_on = (((1 << c->red_size) - 1) << c->red_shift) |
- (((1 << c->green_size) - 1) << c->green_shift) |
- (((1 << c->blue_size) - 1) << c->blue_shift);
- lfbp.lfb = lfb;
- lfbp.font = &font_vga_8x16;
- lfbp.bits_per_pixel = bytes_per_pixel*8;
- lfbp.bytes_per_line = bytes_per_pixel*videomode->xres;
- lfbp.width = videomode->xres;
- lfbp.height = videomode->yres;
- lfbp.flush = hdlcd_flush;
- lfbp.text_columns = videomode->xres / 8;
- lfbp.text_rows = videomode->yres / 16;
- if ( lfb_init(&lfbp) < 0 )
- return;
- video_puts = lfb_scroll_puts;
-}
-
-void __init video_endboot(void) { }
-
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- */
--
1.9.1
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