Dear Rolf Offermanns, In message <4b191b54.6030...@sysgo.com> you wrote: > > does anyone has a working SM501 framebuffer on the STK5200 board? The > board itself works fine on the 2.6.32 kernel.
This is a pretty well supported configuration.
> I got a patch from TQ which used to work around 2.6.24 but it seems with
> the unification of the "simple mpc5200" boards the sm501 support got lost.
Don't expect any real support from TQ on this; so far they never
spent any efforts on the arch/powerpc port of the TQM5200.
> I toyed around with the patch a bit and I got the driver to probe and
> initialize the chip, but I don't get an output on the crt port and an
> open() on /dev/fb0 or /dev/fb1 fails with "no device".
Did you check if you eventually have forgotten to enable Framebuffer
console in your kernel configuration? Make sure to set:
Device Drivers --->
Character devices --->
[*] Virtual terminal
[*] Support for console on virtual terminal (NEW)
...
Multifunction device drivers --->
<*> Support for Silicon Motion SM501
...
Graphics support --->
<*> Support for frame buffer devices --->
[*] Framebuffer foreign endianness support --->
Choice endianness support (Support for Big- and Little-Endian
framebuffers) --->
...
<*> Silicon Motion SM501 framebuffer support
...
Console display driver support --->
[ ] VGA text console (! disable VGA text console!)
<*> Framebuffer Console support
Please find attached below a patch which fixes some issues (but we
don't consider it clean enough for inclusion into mainline yet), and a
known to be working config file. [Kudos to Anatolij for providing
this.]
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
What was sliced bread the greatest thing since?
>From e503a4524ac714f0336ab0a7c02f92ae488e4940 Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Tue, 7 Oct 2009 14:45:16 +0200
Subject: [PATCH] sm501: support SM501 on TQM5200
Signed-off-by: Anatolij Gustschin <agust@denx.de>
---
drivers/mfd/sm501.c | 40 ++++++++++++++++++++++++++++++++++++++++
drivers/video/sm501fb.c | 12 +++++++++++-
2 files changed, 51 insertions(+), 1 deletions(-)
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 0cc5eef..970fa89 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -27,6 +27,13 @@
#include <asm/io.h>
+#if defined(CONFIG_PPC_MPC52xx)
+#undef readl
+#undef writel
+#define readl(addr) __do_readl_be((addr))
+#define writel(val, addr) __do_writel_be((val), (addr))
+#endif
+
struct sm501_device {
struct list_head list;
struct platform_device pdev;
@@ -1378,12 +1385,14 @@ static int __devinit sm501_init_dev(struct sm501_devdata *sm)
sm501_register_gpio(sm);
}
+#if !defined(CONFIG_PPC_MPC52xx) /* prevent crash on tqm5200 */
if (pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) {
if (!sm501_gpio_isregistered(sm))
dev_err(sm->dev, "no gpio available for i2c gpio.\n");
else
sm501_register_gpio_i2c(sm, pdata);
}
+#endif
ret = sm501_check_clocks(sm);
if (ret) {
@@ -1417,7 +1426,9 @@ static int __devinit sm501_plat_probe(struct platform_device *dev)
ret = platform_get_irq(dev, 0);
if (ret < 0) {
dev_err(&dev->dev, "failed to get irq resource\n");
+#if !defined(CONFIG_PPC_MPC52xx) /* we do not need irq on tqm5200 for fbdev */
goto err_res;
+#endif
}
sm->irq = ret;
@@ -1748,8 +1759,37 @@ static struct platform_driver sm501_plat_driver = {
.resume = sm501_plat_resume,
};
+#if defined(CONFIG_PPC_MPC52xx)
+/* define sm501 resources on tqm5200 */
+#define SM501_FB_BASE 0xe0000000
+#define SM501_FB_SIZE 0x00800000
+#define SM501_IO_BASE 0xe3e00000
+#define SM501_IO_SIZE 0x00200000
+#define SM501_FB_END ((SM501_FB_BASE) + (SM501_FB_SIZE) - 1)
+#define SM501_IO_END ((SM501_IO_BASE) + (SM501_IO_SIZE) - 1)
+
+static struct resource sm501_device0_resources[] = {
+ [0] = {.start = SM501_FB_BASE, .end = SM501_FB_END, .flags = IORESOURCE_MEM,},
+ [1] = {.start = SM501_IO_BASE, .end = SM501_IO_END, .flags = IORESOURCE_MEM,},
+};
+
+static struct platform_device sm501_device0 = {
+ .name = "sm501",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(sm501_device0_resources),
+ .resource = sm501_device0_resources,
+};
+
+static struct platform_device *sm501_mfd_devices[] __initdata = {
+ &sm501_device0,
+};
+#endif
+
static int __init sm501_base_init(void)
{
+#if defined(CONFIG_PPC_MPC52xx)
+ platform_add_devices(sm501_mfd_devices, ARRAY_SIZE(sm501_mfd_devices));
+#endif
platform_driver_register(&sm501_plat_driver);
return pci_register_driver(&sm501_pci_driver);
}
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index 924d794..6b65ecd 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -43,6 +43,13 @@
#define NR_PALETTE 256
+#if defined(CONFIG_PPC_MPC52xx)
+#undef readl
+#undef writel
+#define readl(addr) __do_readl_be((addr))
+#define writel(val, addr) __do_writel_be((val), (addr))
+#endif
+
enum sm501_controller {
HEAD_CRT = 0,
HEAD_PANEL = 1,
@@ -1487,6 +1494,9 @@ static int sm501fb_init_fb(struct fb_info *fb,
fb->fbops = &par->ops;
fb->flags = FBINFO_FLAG_DEFAULT |
+#if defined(CONFIG_PPC_MPC52xx)
+ FBINFO_FOREIGN_ENDIAN |
+#endif
FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
/* fixed data */
@@ -1519,7 +1529,7 @@ static int sm501fb_init_fb(struct fb_info *fb,
fb->var.yres_virtual = fb->var.yres;
} else {
ret = fb_find_mode(&fb->var, fb,
- NULL, NULL, 0, NULL, 8);
+ "640x480@60", NULL, 0, NULL, 16);
if (ret == 0 || ret == 4) {
dev_err(info->dev,
--
1.5.6.3
config-tqm5200-sm501.gz
Description: config-tqm5200-sm501.gz
_______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
