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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/video/fbdev/q40fb.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/video/fbdev/q40fb.c')
| -rw-r--r-- | drivers/video/fbdev/q40fb.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/video/fbdev/q40fb.c b/drivers/video/fbdev/q40fb.c new file mode 100644 index 000000000..1ff8fa176 --- /dev/null +++ b/drivers/video/fbdev/q40fb.c @@ -0,0 +1,151 @@ +/* + * linux/drivers/video/q40fb.c -- Q40 frame buffer device + * + * Copyright (C) 2001 + * + * Richard Zidlicky <rz@linux-m68k.org> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> + +#include <linux/uaccess.h> +#include <asm/setup.h> +#include <asm/q40_master.h> +#include <linux/fb.h> +#include <linux/module.h> + +#define Q40_PHYS_SCREEN_ADDR 0xFE800000 + +static struct fb_fix_screeninfo q40fb_fix = { + .id = "Q40", + .smem_len = 1024*1024, + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, + .line_length = 1024*2, + .accel = FB_ACCEL_NONE, +}; + +static const struct fb_var_screeninfo q40fb_var = { + .xres = 1024, + .yres = 512, + .xres_virtual = 1024, + .yres_virtual = 512, + .bits_per_pixel = 16, + .red = {6, 5, 0}, + .green = {11, 5, 0}, + .blue = {0, 6, 0}, + .activate = FB_ACTIVATE_NOW, + .height = 230, + .width = 300, + .vmode = FB_VMODE_NONINTERLACED, +}; + +static int q40fb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, + struct fb_info *info) +{ + /* + * Set a single color register. The values supplied have a 16 bit + * magnitude. + * Return != 0 for invalid regno. + */ + + if (regno > 255) + return 1; + red>>=11; + green>>=11; + blue>>=10; + + if (regno < 16) { + ((u32 *)info->pseudo_palette)[regno] = ((red & 31) <<6) | + ((green & 31) << 11) | + (blue & 63); + } + return 0; +} + +static const struct fb_ops q40fb_ops = { + .owner = THIS_MODULE, + FB_DEFAULT_IOMEM_OPS, + .fb_setcolreg = q40fb_setcolreg, +}; + +static int q40fb_probe(struct platform_device *dev) +{ + struct fb_info *info; + + if (!MACH_IS_Q40) + return -ENXIO; + + /* mapped in q40/config.c */ + q40fb_fix.smem_start = Q40_PHYS_SCREEN_ADDR; + + info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); + if (!info) + return -ENOMEM; + + info->var = q40fb_var; + info->fix = q40fb_fix; + info->fbops = &q40fb_ops; + info->pseudo_palette = info->par; + info->par = NULL; + info->screen_base = (char *) q40fb_fix.smem_start; + + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { + framebuffer_release(info); + return -ENOMEM; + } + + master_outb(3, DISPLAY_CONTROL_REG); + + if (register_framebuffer(info) < 0) { + printk(KERN_ERR "Unable to register Q40 frame buffer\n"); + fb_dealloc_cmap(&info->cmap); + framebuffer_release(info); + return -EINVAL; + } + + fb_info(info, "Q40 frame buffer alive and kicking !\n"); + return 0; +} + +static struct platform_driver q40fb_driver = { + .probe = q40fb_probe, + .driver = { + .name = "q40fb", + }, +}; + +static struct platform_device q40fb_device = { + .name = "q40fb", +}; + +static int __init q40fb_init(void) +{ + int ret = 0; + + if (fb_get_options("q40fb", NULL)) + return -ENODEV; + + ret = platform_driver_register(&q40fb_driver); + + if (!ret) { + ret = platform_device_register(&q40fb_device); + if (ret) + platform_driver_unregister(&q40fb_driver); + } + return ret; +} + +module_init(q40fb_init); +MODULE_LICENSE("GPL"); |
