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Commit 4295f9bf authored by Heiko Schocher's avatar Heiko Schocher Committed by Paul Mundt
Browse files

video, sm501: add OF binding to support SM501 



- add binding to OF, compatible name "smi,sm501"

Signed-off-by: default avatarHeiko Schocher <hs@denx.de>
cc: linux-fbdev@vger.kernel.org
cc: devicetree-discuss@ozlabs.org
cc: Ben Dooks <ben@simtec.co.uk>
cc: Vincent Sanders <vince@simtec.co.uk>
cc: Samuel Ortiz <sameo@linux.intel.com>
cc: linux-kernel@vger.kernel.org
cc: Randy Dunlap <rdunlap@xenotime.net>
cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent e6a04980

Documentation/powerpc/dts-bindings/sm501.txt

0 → 100644
+34 −0
Original line number Diff line number Diff line 
* SM SM501



The SM SM501 is a LCD controller, with proper hardware, it can also

drive DVI monitors.



Required properties:

- compatible : should be "smi,sm501".

- reg : contain two entries:

    - First entry: System Configuration register

    - Second entry: IO space (Display Controller register)

- interrupts : SMI interrupt to the cpu should be described here.

- interrupt-parent : the phandle for the interrupt controller that

  services interrupts for this device.



Optional properties:

- mode : select a video mode:

    <xres>x<yres>[-<bpp>][@<refresh>]

- edid : verbatim EDID data block describing attached display.

  Data from the detailed timing descriptor will be used to

  program the display controller.

- little-endian: availiable on big endian systems, to

  set different foreign endian.

- big-endian: availiable on little endian systems, to

  set different foreign endian.



Example for MPC5200:

	display@1,0 {

		compatible = "smi,sm501";

		reg = <1 0x00000000 0x00800000

		       1 0x03e00000 0x00200000>;

		interrupts = <1 1 3>;

		mode = "640x480-32@60";

		edid = [edid-data];

	};

drivers/mfd/sm501.c

+8 −1
Original line number Diff line number Diff line
@@ -1377,7 +1377,7 @@ static int __devinit sm501_init_dev(struct sm501_devdata *sm) 
			sm501_register_gpio(sm);

	}



	if (pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) {

	if (pdata && 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
@@ -1422,6 +1422,7 @@ static int __devinit sm501_plat_probe(struct platform_device *dev) 


	sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);

	sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);



	if (sm->io_res == NULL || sm->mem_res == NULL) {

		dev_err(&dev->dev, "failed to get IO resource\n");

		ret = -ENOENT;
@@ -1735,10 +1736,16 @@ static struct pci_driver sm501_pci_driver = { 


MODULE_ALIAS("platform:sm501");



static struct of_device_id __devinitdata of_sm501_match_tbl[] = {

	{ .compatible = "smi,sm501", },

	{ /* end */ }

};



static struct platform_driver sm501_plat_driver = {

	.driver		= {

		.name	= "sm501",

		.owner	= THIS_MODULE,

		.of_match_table = of_sm501_match_tbl,

	},

	.probe		= sm501_plat_probe,

	.remove		= sm501_plat_remove,

drivers/video/sm501fb.c

+39 −3
Original line number Diff line number Diff line
@@ -1729,6 +1729,15 @@ static int sm501fb_init_fb(struct fb_info *fb, 
		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |

		FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;



#if defined(CONFIG_OF)

#ifdef __BIG_ENDIAN

	if (of_get_property(info->dev->parent->of_node, "little-endian", NULL))

		fb->flags |= FBINFO_FOREIGN_ENDIAN;

#else

	if (of_get_property(info->dev->parent->of_node, "big-endian", NULL))

		fb->flags |= FBINFO_FOREIGN_ENDIAN;

#endif

#endif

	/* fixed data */



	fb->fix.type		= FB_TYPE_PACKED_PIXELS;
@@ -1765,14 +1774,17 @@ static int sm501fb_init_fb(struct fb_info *fb, 
			fb->var.xres_virtual = fb->var.xres;

			fb->var.yres_virtual = fb->var.yres;

		} else {

			if (info->edid_data)

			if (info->edid_data) {

				ret = fb_find_mode(&fb->var, fb, fb_mode,

					fb->monspecs.modedb,

					fb->monspecs.modedb_len,

					&sm501_default_mode, default_bpp);

			else

				/* edid_data is no longer needed, free it */

				kfree(info->edid_data);

			} else {

				ret = fb_find_mode(&fb->var, fb,

					   NULL, NULL, 0, NULL, 8);

			}



			switch (ret) {

			case 1:
@@ -1933,9 +1945,33 @@ static int __devinit sm501fb_probe(struct platform_device *pdev) 
	}



	if (info->pdata == NULL) {

		int found = 0;

#if defined(CONFIG_OF)

		struct device_node *np = pdev->dev.parent->of_node;

		const u8 *prop;

		const char *cp;

		int len;



		info->pdata = &sm501fb_def_pdata;

		if (np) {

			/* Get EDID */

			cp = of_get_property(np, "mode", &len);

			if (cp)

				strcpy(fb_mode, cp);

			prop = of_get_property(np, "edid", &len);

			if (prop && len == EDID_LENGTH) {

				info->edid_data = kmemdup(prop, EDID_LENGTH,

							  GFP_KERNEL);

				if (info->edid_data)

					found = 1;

			}

		}

#endif

		if (!found) {

			dev_info(dev, "using default configuration data\n");

			info->pdata = &sm501fb_def_pdata;

		}

	}



	/* probe for the presence of each panel */