mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
bf28fb50bf
As usual, this patches were taken (and rebased) from https://github.com/raspberrypi/linux/commits/rpi-4.1.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 47258
414 lines
13 KiB
Diff
414 lines
13 KiB
Diff
From 23f7babfd87a6be47db1e16e1177f5743ddb4ea5 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
|
|
Date: Mon, 20 Jul 2015 12:20:59 +0200
|
|
Subject: [PATCH 137/203] fbdev: bcm2708: Use firmware API
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Use the new firmware API instead of the legacy mailbox API.
|
|
|
|
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
|
|
---
|
|
arch/arm/boot/dts/bcm2708_common.dtsi | 1 +
|
|
drivers/video/fbdev/bcm2708_fb.c | 273 +++++++++++++++++++---------------
|
|
2 files changed, 152 insertions(+), 122 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/bcm2708_common.dtsi
|
|
+++ b/arch/arm/boot/dts/bcm2708_common.dtsi
|
|
@@ -217,6 +217,7 @@
|
|
|
|
fb: fb {
|
|
compatible = "brcm,bcm2708-fb";
|
|
+ firmware = <&firmware>;
|
|
status = "disabled";
|
|
};
|
|
|
|
--- a/drivers/video/fbdev/bcm2708_fb.c
|
|
+++ b/drivers/video/fbdev/bcm2708_fb.c
|
|
@@ -25,7 +25,6 @@
|
|
#include <linux/ioport.h>
|
|
#include <linux/list.h>
|
|
#include <linux/platform_data/dma-bcm2708.h>
|
|
-#include <linux/platform_data/mailbox-bcm2708.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/printk.h>
|
|
@@ -34,6 +33,7 @@
|
|
#include <asm/sizes.h>
|
|
#include <linux/io.h>
|
|
#include <linux/dma-mapping.h>
|
|
+#include <soc/bcm2835/raspberrypi-firmware.h>
|
|
|
|
//#define BCM2708_FB_DEBUG
|
|
#define MODULE_NAME "bcm2708_fb"
|
|
@@ -58,15 +58,19 @@ static u32 dma_busy_wait_threshold = 1<<
|
|
module_param(dma_busy_wait_threshold, int, 0644);
|
|
MODULE_PARM_DESC(dma_busy_wait_threshold, "Busy-wait for DMA completion below this area");
|
|
|
|
-/* this data structure describes each frame buffer device we find */
|
|
-
|
|
-struct fbinfo_s {
|
|
- u32 xres, yres, xres_virtual, yres_virtual;
|
|
- u32 pitch, bpp;
|
|
+struct fb_alloc_tags {
|
|
+ struct rpi_firmware_property_tag_header tag1;
|
|
+ u32 xres, yres;
|
|
+ struct rpi_firmware_property_tag_header tag2;
|
|
+ u32 xres_virtual, yres_virtual;
|
|
+ struct rpi_firmware_property_tag_header tag3;
|
|
+ u32 bpp;
|
|
+ struct rpi_firmware_property_tag_header tag4;
|
|
u32 xoffset, yoffset;
|
|
- u32 base;
|
|
- u32 screen_size;
|
|
- u16 cmap[256];
|
|
+ struct rpi_firmware_property_tag_header tag5;
|
|
+ u32 base, screen_size;
|
|
+ struct rpi_firmware_property_tag_header tag6;
|
|
+ u32 pitch;
|
|
};
|
|
|
|
struct bcm2708_fb_stats {
|
|
@@ -78,9 +82,9 @@ struct bcm2708_fb_stats {
|
|
struct bcm2708_fb {
|
|
struct fb_info fb;
|
|
struct platform_device *dev;
|
|
- struct fbinfo_s *info;
|
|
- dma_addr_t dma;
|
|
+ struct rpi_firmware *fw;
|
|
u32 cmap[16];
|
|
+ u32 gpu_cmap[256];
|
|
int dma_chan;
|
|
int dma_irq;
|
|
void __iomem *dma_chan_base;
|
|
@@ -270,69 +274,71 @@ static int bcm2708_fb_check_var(struct f
|
|
|
|
static int bcm2708_fb_set_par(struct fb_info *info)
|
|
{
|
|
- uint32_t val = 0;
|
|
struct bcm2708_fb *fb = to_bcm2708(info);
|
|
- volatile struct fbinfo_s *fbinfo = fb->info;
|
|
- fbinfo->xres = info->var.xres;
|
|
- fbinfo->yres = info->var.yres;
|
|
- fbinfo->xres_virtual = info->var.xres_virtual;
|
|
- fbinfo->yres_virtual = info->var.yres_virtual;
|
|
- fbinfo->bpp = info->var.bits_per_pixel;
|
|
- fbinfo->xoffset = info->var.xoffset;
|
|
- fbinfo->yoffset = info->var.yoffset;
|
|
- fbinfo->base = 0; /* filled in by VC */
|
|
- fbinfo->pitch = 0; /* filled in by VC */
|
|
+ struct fb_alloc_tags fbinfo = {
|
|
+ .tag1 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT,
|
|
+ 8, 0, },
|
|
+ .xres = info->var.xres,
|
|
+ .yres = info->var.yres,
|
|
+ .tag2 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT,
|
|
+ 8, 0, },
|
|
+ .xres_virtual = info->var.xres_virtual,
|
|
+ .yres_virtual = info->var.yres_virtual,
|
|
+ .tag3 = { RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH, 4, 0 },
|
|
+ .bpp = info->var.bits_per_pixel,
|
|
+ .tag4 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET, 8, 0 },
|
|
+ .xoffset = info->var.xoffset,
|
|
+ .yoffset = info->var.yoffset,
|
|
+ .tag5 = { RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE, 8, 0 },
|
|
+ .base = 0,
|
|
+ .screen_size = 0,
|
|
+ .tag6 = { RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH, 4, 0 },
|
|
+ .pitch = 0,
|
|
+ };
|
|
+ int ret;
|
|
|
|
print_debug("bcm2708_fb_set_par info(%p) %dx%d (%dx%d), %d, %d\n", info,
|
|
info->var.xres, info->var.yres, info->var.xres_virtual,
|
|
info->var.yres_virtual, (int)info->screen_size,
|
|
info->var.bits_per_pixel);
|
|
|
|
- /* ensure last write to fbinfo is visible to GPU */
|
|
- wmb();
|
|
-
|
|
- /* inform vc about new framebuffer */
|
|
- bcm_mailbox_write(MBOX_CHAN_FB, fb->dma);
|
|
+ ret = rpi_firmware_property_list(fb->fw, &fbinfo, sizeof(fbinfo));
|
|
+ if (ret) {
|
|
+ dev_err(info->device,
|
|
+ "Failed to allocate GPU framebuffer (%d)\n", ret);
|
|
+ return ret;
|
|
+ }
|
|
|
|
- /* TODO: replace fb driver with vchiq version */
|
|
- /* wait for response */
|
|
- bcm_mailbox_read(MBOX_CHAN_FB, &val);
|
|
-
|
|
- /* ensure GPU writes are visible to us */
|
|
- rmb();
|
|
-
|
|
- if (val == 0) {
|
|
- fb->fb.fix.line_length = fbinfo->pitch;
|
|
-
|
|
- if (info->var.bits_per_pixel <= 8)
|
|
- fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
|
|
- else
|
|
- fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
|
|
-
|
|
- fb->fb_bus_address = fbinfo->base;
|
|
- fbinfo->base &= ~0xc0000000;
|
|
- fb->fb.fix.smem_start = fbinfo->base;
|
|
- fb->fb.fix.smem_len = fbinfo->pitch * fbinfo->yres_virtual;
|
|
- fb->fb.screen_size = fbinfo->screen_size;
|
|
- if (fb->fb.screen_base)
|
|
- iounmap(fb->fb.screen_base);
|
|
- fb->fb.screen_base =
|
|
- (void *)ioremap_wc(fbinfo->base, fb->fb.screen_size);
|
|
- if (!fb->fb.screen_base) {
|
|
- /* the console may currently be locked */
|
|
- console_trylock();
|
|
- console_unlock();
|
|
- pr_err("bcm2708_fb_set_par: Failed to set screen_base\n");
|
|
- return -EIO;
|
|
- }
|
|
+ if (info->var.bits_per_pixel <= 8)
|
|
+ fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
|
|
+ else
|
|
+ fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
|
|
+
|
|
+ fb->fb.fix.line_length = fbinfo.pitch;
|
|
+ fbinfo.base |= 0x40000000;
|
|
+ fb->fb_bus_address = fbinfo.base;
|
|
+ fbinfo.base &= ~0xc0000000;
|
|
+ fb->fb.fix.smem_start = fbinfo.base;
|
|
+ fb->fb.fix.smem_len = fbinfo.pitch * fbinfo.yres_virtual;
|
|
+ fb->fb.screen_size = fbinfo.screen_size;
|
|
+ if (fb->fb.screen_base)
|
|
+ iounmap(fb->fb.screen_base);
|
|
+ fb->fb.screen_base = ioremap_wc(fbinfo.base, fb->fb.screen_size);
|
|
+ if (!fb->fb.screen_base) {
|
|
+ /* the console may currently be locked */
|
|
+ console_trylock();
|
|
+ console_unlock();
|
|
+ dev_err(info->device, "Failed to set screen_base\n");
|
|
+ return -ENOMEM;
|
|
}
|
|
+
|
|
print_debug
|
|
- ("BCM2708FB: start = %p,%p width=%d, height=%d, bpp=%d, pitch=%d size=%d success=%d\n",
|
|
+ ("BCM2708FB: start = %p,%p width=%d, height=%d, bpp=%d, pitch=%d size=%d\n",
|
|
(void *)fb->fb.screen_base, (void *)fb->fb_bus_address,
|
|
- fbinfo->xres, fbinfo->yres, fbinfo->bpp,
|
|
- fbinfo->pitch, (int)fb->fb.screen_size, val);
|
|
+ fbinfo.xres, fbinfo.yres, fbinfo.bpp,
|
|
+ fbinfo.pitch, (int)fb->fb.screen_size);
|
|
|
|
- return val;
|
|
+ return 0;
|
|
}
|
|
|
|
static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
|
|
@@ -352,15 +358,34 @@ static int bcm2708_fb_setcolreg(unsigned
|
|
/*print_debug("BCM2708FB: setcolreg %d:(%02x,%02x,%02x,%02x) %x\n", regno, red, green, blue, transp, fb->fb.fix.visual);*/
|
|
if (fb->fb.var.bits_per_pixel <= 8) {
|
|
if (regno < 256) {
|
|
- /* blue [0:4], green [5:10], red [11:15] */
|
|
- fb->info->cmap[regno] = ((red >> (16-5)) & 0x1f) << 11 |
|
|
- ((green >> (16-6)) & 0x3f) << 5 |
|
|
- ((blue >> (16-5)) & 0x1f) << 0;
|
|
+ /* blue [23:16], green [15:8], red [7:0] */
|
|
+ fb->gpu_cmap[regno] = ((red >> 8) & 0xff) << 0 |
|
|
+ ((green >> 8) & 0xff) << 8 |
|
|
+ ((blue >> 8) & 0xff) << 16;
|
|
}
|
|
/* Hack: we need to tell GPU the palette has changed, but currently bcm2708_fb_set_par takes noticable time when called for every (256) colour */
|
|
/* So just call it for what looks like the last colour in a list for now. */
|
|
- if (regno == 15 || regno == 255)
|
|
- bcm2708_fb_set_par(info);
|
|
+ if (regno == 15 || regno == 255) {
|
|
+ struct packet {
|
|
+ u32 offset;
|
|
+ u32 length;
|
|
+ u32 cmap[256];
|
|
+ } *packet;
|
|
+ int ret;
|
|
+
|
|
+ packet = kmalloc(sizeof(*packet), GFP_KERNEL);
|
|
+ if (!packet)
|
|
+ return -ENOMEM;
|
|
+ packet->offset = 0;
|
|
+ packet->length = regno + 1;
|
|
+ memcpy(packet->cmap, fb->gpu_cmap, sizeof(packet->cmap));
|
|
+ ret = rpi_firmware_property(fb->fw, RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE,
|
|
+ packet, (2 + packet->length) * sizeof(u32));
|
|
+ if (ret || packet->offset)
|
|
+ dev_err(info->device, "Failed to set palette (%d,%u)\n",
|
|
+ ret, packet->offset);
|
|
+ kfree(packet);
|
|
+ }
|
|
} else if (regno < 16) {
|
|
fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
|
|
convert_bitfield(blue, &fb->fb.var.blue) |
|
|
@@ -372,27 +397,31 @@ static int bcm2708_fb_setcolreg(unsigned
|
|
|
|
static int bcm2708_fb_blank(int blank_mode, struct fb_info *info)
|
|
{
|
|
- s32 result = -1;
|
|
- u32 p[7];
|
|
- if ( (blank_mode == FB_BLANK_NORMAL) ||
|
|
- (blank_mode == FB_BLANK_UNBLANK)) {
|
|
-
|
|
- p[0] = 28; // size = sizeof u32 * length of p
|
|
- p[1] = VCMSG_PROCESS_REQUEST; // process request
|
|
- p[2] = VCMSG_SET_BLANK_SCREEN; // (the tag id)
|
|
- p[3] = 4; // (size of the response buffer)
|
|
- p[4] = 4; // (size of the request data)
|
|
- p[5] = blank_mode;
|
|
- p[6] = VCMSG_PROPERTY_END; // end tag
|
|
-
|
|
- bcm_mailbox_property(&p, p[0]);
|
|
-
|
|
- if ( p[1] == VCMSG_REQUEST_SUCCESSFUL )
|
|
- result = 0;
|
|
- else
|
|
- pr_err("bcm2708_fb_blank(%d) returns=%d p[1]=0x%x\n", blank_mode, p[5], p[1]);
|
|
+ struct bcm2708_fb *fb = to_bcm2708(info);
|
|
+ u32 value;
|
|
+ int ret;
|
|
+
|
|
+ switch (blank_mode) {
|
|
+ case FB_BLANK_UNBLANK:
|
|
+ value = 0;
|
|
+ break;
|
|
+ case FB_BLANK_NORMAL:
|
|
+ case FB_BLANK_VSYNC_SUSPEND:
|
|
+ case FB_BLANK_HSYNC_SUSPEND:
|
|
+ case FB_BLANK_POWERDOWN:
|
|
+ value = 1;
|
|
+ break;
|
|
+ default:
|
|
+ return -EINVAL;
|
|
}
|
|
- return result;
|
|
+
|
|
+ ret = rpi_firmware_property(fb->fw, RPI_FIRMWARE_FRAMEBUFFER_BLANK,
|
|
+ &value, sizeof(value));
|
|
+ if (ret)
|
|
+ dev_err(info->device, "bcm2708_fb_blank(%d) failed: %d\n",
|
|
+ blank_mode, ret);
|
|
+
|
|
+ return ret;
|
|
}
|
|
|
|
static int bcm2708_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
@@ -408,25 +437,25 @@ static int bcm2708_fb_pan_display(struct
|
|
|
|
static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
|
|
{
|
|
- s32 result = -1;
|
|
- u32 p[7];
|
|
- if (cmd == FBIO_WAITFORVSYNC) {
|
|
- p[0] = 28; // size = sizeof u32 * length of p
|
|
- p[1] = VCMSG_PROCESS_REQUEST; // process request
|
|
- p[2] = VCMSG_SET_VSYNC; // (the tag id)
|
|
- p[3] = 4; // (size of the response buffer)
|
|
- p[4] = 4; // (size of the request data)
|
|
- p[5] = 0; // dummy
|
|
- p[6] = VCMSG_PROPERTY_END; // end tag
|
|
-
|
|
- bcm_mailbox_property(&p, p[0]);
|
|
-
|
|
- if ( p[1] == VCMSG_REQUEST_SUCCESSFUL )
|
|
- result = 0;
|
|
- else
|
|
- pr_err("bcm2708_fb_ioctl %x,%lx returns=%d p[1]=0x%x\n", cmd, arg, p[5], p[1]);
|
|
+ struct bcm2708_fb *fb = to_bcm2708(info);
|
|
+ u32 dummy = 0;
|
|
+ int ret;
|
|
+
|
|
+ switch (cmd) {
|
|
+ case FBIO_WAITFORVSYNC:
|
|
+ ret = rpi_firmware_property(fb->fw,
|
|
+ RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC,
|
|
+ &dummy, sizeof(dummy));
|
|
+ break;
|
|
+ default:
|
|
+ dev_err(info->device, "Unknown ioctl 0x%x\n", cmd);
|
|
+ return -EINVAL;
|
|
}
|
|
- return result;
|
|
+
|
|
+ if (ret)
|
|
+ dev_err(info->device, "ioctl 0x%x failed (%d)\n", cmd, ret);
|
|
+
|
|
+ return ret;
|
|
}
|
|
static void bcm2708_fb_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *rect)
|
|
@@ -621,20 +650,7 @@ static struct fb_ops bcm2708_fb_ops = {
|
|
static int bcm2708_fb_register(struct bcm2708_fb *fb)
|
|
{
|
|
int ret;
|
|
- dma_addr_t dma;
|
|
- void *mem;
|
|
|
|
- mem =
|
|
- dma_alloc_coherent(&fb->dev->dev, PAGE_ALIGN(sizeof(*fb->info)), &dma,
|
|
- GFP_KERNEL);
|
|
-
|
|
- if (NULL == mem) {
|
|
- pr_err(": unable to allocate fbinfo buffer\n");
|
|
- ret = -ENOMEM;
|
|
- } else {
|
|
- fb->info = (struct fbinfo_s *)mem;
|
|
- fb->dma = dma;
|
|
- }
|
|
fb->fb.fbops = &bcm2708_fb_ops;
|
|
fb->fb.flags = FBINFO_FLAG_DEFAULT | FBINFO_HWACCEL_COPYAREA;
|
|
fb->fb.pseudo_palette = fb->cmap;
|
|
@@ -693,9 +709,22 @@ out:
|
|
|
|
static int bcm2708_fb_probe(struct platform_device *dev)
|
|
{
|
|
+ struct device_node *fw_np;
|
|
+ struct rpi_firmware *fw;
|
|
struct bcm2708_fb *fb;
|
|
int ret;
|
|
|
|
+ fw_np = of_parse_phandle(dev->dev.of_node, "firmware", 0);
|
|
+/* Remove comment when booting without Device Tree is no longer supported
|
|
+ if (!fw_np) {
|
|
+ dev_err(&dev->dev, "Missing firmware node\n");
|
|
+ return -ENOENT;
|
|
+ }
|
|
+*/
|
|
+ fw = rpi_firmware_get(fw_np);
|
|
+ if (!fw)
|
|
+ return -EPROBE_DEFER;
|
|
+
|
|
fb = kzalloc(sizeof(struct bcm2708_fb), GFP_KERNEL);
|
|
if (!fb) {
|
|
dev_err(&dev->dev,
|
|
@@ -704,6 +733,7 @@ static int bcm2708_fb_probe(struct platf
|
|
goto free_region;
|
|
}
|
|
|
|
+ fb->fw = fw;
|
|
bcm2708_fb_debugfs_init(fb);
|
|
|
|
fb->cb_base = dma_alloc_writecombine(&dev->dev, SZ_64K,
|
|
@@ -737,6 +767,7 @@ static int bcm2708_fb_probe(struct platf
|
|
fb->dma_chan, fb->dma_chan_base);
|
|
|
|
fb->dev = dev;
|
|
+ fb->fb.device = &dev->dev;
|
|
|
|
ret = bcm2708_fb_register(fb);
|
|
if (ret == 0) {
|
|
@@ -769,8 +800,6 @@ static int bcm2708_fb_remove(struct plat
|
|
dma_free_writecombine(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
|
|
bcm_dma_chan_free(fb->dma_chan);
|
|
|
|
- dma_free_coherent(NULL, PAGE_ALIGN(sizeof(*fb->info)), (void *)fb->info,
|
|
- fb->dma);
|
|
bcm2708_fb_debugfs_deinit(fb);
|
|
|
|
free_irq(fb->dma_irq, fb);
|