mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
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5d30146f94
Use ->screen_buffer instead of ->screen_base to fix sparse warnings.
[ Please see commit 17a7b0b4d9
("fb.h: Provide alternate screen_base
pointer") for details. ]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patchwork.freedesktop.org/patch/msgid/c687dbc5-cf5a-9508-2a61-e757a1a14568@samsung.com
2668 lines
66 KiB
C
2668 lines
66 KiB
C
/*
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* SuperH Mobile LCDC Framebuffer
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*
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* Copyright (c) 2008 Magnus Damm
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/atomic.h>
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#include <linux/backlight.h>
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#include <linux/clk.h>
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#include <linux/console.h>
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#include <linux/ctype.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/fbcon.h>
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/ioctl.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <linux/vmalloc.h>
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#include <video/sh_mobile_lcdc.h>
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#include "sh_mobile_lcdcfb.h"
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/* ----------------------------------------------------------------------------
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* Overlay register definitions
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*/
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#define LDBCR 0xb00
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#define LDBCR_UPC(n) (1 << ((n) + 16))
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#define LDBCR_UPF(n) (1 << ((n) + 8))
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#define LDBCR_UPD(n) (1 << ((n) + 0))
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#define LDBnBSIFR(n) (0xb20 + (n) * 0x20 + 0x00)
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#define LDBBSIFR_EN (1 << 31)
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#define LDBBSIFR_VS (1 << 29)
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#define LDBBSIFR_BRSEL (1 << 28)
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#define LDBBSIFR_MX (1 << 27)
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#define LDBBSIFR_MY (1 << 26)
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#define LDBBSIFR_CV3 (3 << 24)
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#define LDBBSIFR_CV2 (2 << 24)
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#define LDBBSIFR_CV1 (1 << 24)
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#define LDBBSIFR_CV0 (0 << 24)
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#define LDBBSIFR_CV_MASK (3 << 24)
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#define LDBBSIFR_LAY_MASK (0xff << 16)
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#define LDBBSIFR_LAY_SHIFT 16
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#define LDBBSIFR_ROP3_MASK (0xff << 16)
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#define LDBBSIFR_ROP3_SHIFT 16
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#define LDBBSIFR_AL_PL8 (3 << 14)
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#define LDBBSIFR_AL_PL1 (2 << 14)
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#define LDBBSIFR_AL_PK (1 << 14)
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#define LDBBSIFR_AL_1 (0 << 14)
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#define LDBBSIFR_AL_MASK (3 << 14)
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#define LDBBSIFR_SWPL (1 << 10)
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#define LDBBSIFR_SWPW (1 << 9)
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#define LDBBSIFR_SWPB (1 << 8)
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#define LDBBSIFR_RY (1 << 7)
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#define LDBBSIFR_CHRR_420 (2 << 0)
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#define LDBBSIFR_CHRR_422 (1 << 0)
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#define LDBBSIFR_CHRR_444 (0 << 0)
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#define LDBBSIFR_RPKF_ARGB32 (0x00 << 0)
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#define LDBBSIFR_RPKF_RGB16 (0x03 << 0)
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#define LDBBSIFR_RPKF_RGB24 (0x0b << 0)
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#define LDBBSIFR_RPKF_MASK (0x1f << 0)
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#define LDBnBSSZR(n) (0xb20 + (n) * 0x20 + 0x04)
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#define LDBBSSZR_BVSS_MASK (0xfff << 16)
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#define LDBBSSZR_BVSS_SHIFT 16
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#define LDBBSSZR_BHSS_MASK (0xfff << 0)
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#define LDBBSSZR_BHSS_SHIFT 0
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#define LDBnBLOCR(n) (0xb20 + (n) * 0x20 + 0x08)
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#define LDBBLOCR_CVLC_MASK (0xfff << 16)
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#define LDBBLOCR_CVLC_SHIFT 16
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#define LDBBLOCR_CHLC_MASK (0xfff << 0)
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#define LDBBLOCR_CHLC_SHIFT 0
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#define LDBnBSMWR(n) (0xb20 + (n) * 0x20 + 0x0c)
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#define LDBBSMWR_BSMWA_MASK (0xffff << 16)
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#define LDBBSMWR_BSMWA_SHIFT 16
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#define LDBBSMWR_BSMW_MASK (0xffff << 0)
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#define LDBBSMWR_BSMW_SHIFT 0
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#define LDBnBSAYR(n) (0xb20 + (n) * 0x20 + 0x10)
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#define LDBBSAYR_FG1A_MASK (0xff << 24)
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#define LDBBSAYR_FG1A_SHIFT 24
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#define LDBBSAYR_FG1R_MASK (0xff << 16)
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#define LDBBSAYR_FG1R_SHIFT 16
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#define LDBBSAYR_FG1G_MASK (0xff << 8)
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#define LDBBSAYR_FG1G_SHIFT 8
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#define LDBBSAYR_FG1B_MASK (0xff << 0)
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#define LDBBSAYR_FG1B_SHIFT 0
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#define LDBnBSACR(n) (0xb20 + (n) * 0x20 + 0x14)
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#define LDBBSACR_FG2A_MASK (0xff << 24)
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#define LDBBSACR_FG2A_SHIFT 24
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#define LDBBSACR_FG2R_MASK (0xff << 16)
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#define LDBBSACR_FG2R_SHIFT 16
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#define LDBBSACR_FG2G_MASK (0xff << 8)
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#define LDBBSACR_FG2G_SHIFT 8
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#define LDBBSACR_FG2B_MASK (0xff << 0)
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#define LDBBSACR_FG2B_SHIFT 0
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#define LDBnBSAAR(n) (0xb20 + (n) * 0x20 + 0x18)
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#define LDBBSAAR_AP_MASK (0xff << 24)
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#define LDBBSAAR_AP_SHIFT 24
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#define LDBBSAAR_R_MASK (0xff << 16)
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#define LDBBSAAR_R_SHIFT 16
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#define LDBBSAAR_GY_MASK (0xff << 8)
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#define LDBBSAAR_GY_SHIFT 8
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#define LDBBSAAR_B_MASK (0xff << 0)
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#define LDBBSAAR_B_SHIFT 0
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#define LDBnBPPCR(n) (0xb20 + (n) * 0x20 + 0x1c)
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#define LDBBPPCR_AP_MASK (0xff << 24)
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#define LDBBPPCR_AP_SHIFT 24
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#define LDBBPPCR_R_MASK (0xff << 16)
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#define LDBBPPCR_R_SHIFT 16
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#define LDBBPPCR_GY_MASK (0xff << 8)
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#define LDBBPPCR_GY_SHIFT 8
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#define LDBBPPCR_B_MASK (0xff << 0)
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#define LDBBPPCR_B_SHIFT 0
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#define LDBnBBGCL(n) (0xb10 + (n) * 0x04)
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#define LDBBBGCL_BGA_MASK (0xff << 24)
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#define LDBBBGCL_BGA_SHIFT 24
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#define LDBBBGCL_BGR_MASK (0xff << 16)
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#define LDBBBGCL_BGR_SHIFT 16
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#define LDBBBGCL_BGG_MASK (0xff << 8)
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#define LDBBBGCL_BGG_SHIFT 8
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#define LDBBBGCL_BGB_MASK (0xff << 0)
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#define LDBBBGCL_BGB_SHIFT 0
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#define SIDE_B_OFFSET 0x1000
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#define MIRROR_OFFSET 0x2000
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#define MAX_XRES 1920
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#define MAX_YRES 1080
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enum sh_mobile_lcdc_overlay_mode {
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LCDC_OVERLAY_BLEND,
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LCDC_OVERLAY_ROP3,
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};
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/*
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* struct sh_mobile_lcdc_overlay - LCDC display overlay
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*
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* @channel: LCDC channel this overlay belongs to
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* @cfg: Overlay configuration
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* @info: Frame buffer device
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* @index: Overlay index (0-3)
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* @base: Overlay registers base address
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* @enabled: True if the overlay is enabled
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* @mode: Overlay blending mode (alpha blend or ROP3)
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* @alpha: Global alpha blending value (0-255, for alpha blending mode)
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* @rop3: Raster operation (for ROP3 mode)
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* @fb_mem: Frame buffer virtual memory address
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* @fb_size: Frame buffer size in bytes
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* @dma_handle: Frame buffer DMA address
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* @base_addr_y: Overlay base address (RGB or luma component)
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* @base_addr_c: Overlay base address (chroma component)
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* @pan_y_offset: Panning linear offset in bytes (luma component)
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* @format: Current pixelf format
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* @xres: Horizontal visible resolution
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* @xres_virtual: Horizontal total resolution
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* @yres: Vertical visible resolution
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* @yres_virtual: Vertical total resolution
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* @pitch: Overlay line pitch
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* @pos_x: Horizontal overlay position
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* @pos_y: Vertical overlay position
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*/
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struct sh_mobile_lcdc_overlay {
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struct sh_mobile_lcdc_chan *channel;
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const struct sh_mobile_lcdc_overlay_cfg *cfg;
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struct fb_info *info;
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unsigned int index;
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unsigned long base;
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bool enabled;
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enum sh_mobile_lcdc_overlay_mode mode;
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unsigned int alpha;
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unsigned int rop3;
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void *fb_mem;
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unsigned long fb_size;
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dma_addr_t dma_handle;
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unsigned long base_addr_y;
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unsigned long base_addr_c;
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unsigned long pan_y_offset;
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const struct sh_mobile_lcdc_format_info *format;
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unsigned int xres;
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unsigned int xres_virtual;
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unsigned int yres;
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unsigned int yres_virtual;
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unsigned int pitch;
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int pos_x;
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int pos_y;
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};
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struct sh_mobile_lcdc_priv {
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void __iomem *base;
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int irq;
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atomic_t hw_usecnt;
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struct device *dev;
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struct clk *dot_clk;
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unsigned long lddckr;
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struct sh_mobile_lcdc_chan ch[2];
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struct sh_mobile_lcdc_overlay overlays[4];
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int started;
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int forced_fourcc; /* 2 channel LCDC must share fourcc setting */
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};
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/* -----------------------------------------------------------------------------
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* Registers access
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*/
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static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
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[LDDCKPAT1R] = 0x400,
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[LDDCKPAT2R] = 0x404,
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[LDMT1R] = 0x418,
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[LDMT2R] = 0x41c,
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[LDMT3R] = 0x420,
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[LDDFR] = 0x424,
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[LDSM1R] = 0x428,
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[LDSM2R] = 0x42c,
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[LDSA1R] = 0x430,
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[LDSA2R] = 0x434,
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[LDMLSR] = 0x438,
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[LDHCNR] = 0x448,
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[LDHSYNR] = 0x44c,
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[LDVLNR] = 0x450,
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[LDVSYNR] = 0x454,
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[LDPMR] = 0x460,
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[LDHAJR] = 0x4a0,
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};
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static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
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[LDDCKPAT1R] = 0x408,
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[LDDCKPAT2R] = 0x40c,
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[LDMT1R] = 0x600,
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[LDMT2R] = 0x604,
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[LDMT3R] = 0x608,
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[LDDFR] = 0x60c,
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[LDSM1R] = 0x610,
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[LDSM2R] = 0x614,
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[LDSA1R] = 0x618,
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[LDMLSR] = 0x620,
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[LDHCNR] = 0x624,
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[LDHSYNR] = 0x628,
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[LDVLNR] = 0x62c,
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[LDVSYNR] = 0x630,
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[LDPMR] = 0x63c,
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};
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static bool banked(int reg_nr)
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{
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switch (reg_nr) {
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case LDMT1R:
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case LDMT2R:
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case LDMT3R:
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case LDDFR:
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case LDSM1R:
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case LDSA1R:
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case LDSA2R:
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case LDMLSR:
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case LDHCNR:
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case LDHSYNR:
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case LDVLNR:
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case LDVSYNR:
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return true;
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}
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return false;
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}
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static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan)
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{
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return chan->cfg->chan == LCDC_CHAN_SUBLCD;
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}
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static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan,
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int reg_nr, unsigned long data)
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{
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iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]);
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if (banked(reg_nr))
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iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
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SIDE_B_OFFSET);
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}
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static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan,
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int reg_nr, unsigned long data)
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{
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iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
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MIRROR_OFFSET);
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}
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static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan,
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int reg_nr)
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{
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return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]);
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}
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static void lcdc_write_overlay(struct sh_mobile_lcdc_overlay *ovl,
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int reg, unsigned long data)
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{
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iowrite32(data, ovl->channel->lcdc->base + reg);
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iowrite32(data, ovl->channel->lcdc->base + reg + SIDE_B_OFFSET);
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}
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static void lcdc_write(struct sh_mobile_lcdc_priv *priv,
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unsigned long reg_offs, unsigned long data)
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{
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iowrite32(data, priv->base + reg_offs);
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}
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static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv,
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unsigned long reg_offs)
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{
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return ioread32(priv->base + reg_offs);
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}
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static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv,
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unsigned long reg_offs,
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unsigned long mask, unsigned long until)
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{
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while ((lcdc_read(priv, reg_offs) & mask) != until)
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cpu_relax();
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}
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/* -----------------------------------------------------------------------------
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* Clock management
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*/
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static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv)
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{
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if (atomic_inc_and_test(&priv->hw_usecnt)) {
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if (priv->dot_clk)
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clk_prepare_enable(priv->dot_clk);
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pm_runtime_get_sync(priv->dev);
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}
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}
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static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)
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{
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if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {
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pm_runtime_put(priv->dev);
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if (priv->dot_clk)
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clk_disable_unprepare(priv->dot_clk);
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}
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}
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static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv,
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int clock_source)
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{
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struct clk *clk;
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char *str;
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switch (clock_source) {
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case LCDC_CLK_BUS:
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str = "bus_clk";
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priv->lddckr = LDDCKR_ICKSEL_BUS;
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break;
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case LCDC_CLK_PERIPHERAL:
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str = "peripheral_clk";
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priv->lddckr = LDDCKR_ICKSEL_MIPI;
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break;
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case LCDC_CLK_EXTERNAL:
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str = NULL;
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priv->lddckr = LDDCKR_ICKSEL_HDMI;
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break;
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default:
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return -EINVAL;
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}
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if (str == NULL)
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return 0;
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clk = clk_get(priv->dev, str);
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if (IS_ERR(clk)) {
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dev_err(priv->dev, "cannot get dot clock %s\n", str);
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return PTR_ERR(clk);
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}
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priv->dot_clk = clk;
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* Display, panel and deferred I/O
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*/
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static void lcdc_sys_write_index(void *handle, unsigned long data)
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{
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struct sh_mobile_lcdc_chan *ch = handle;
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lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT);
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
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(lcdc_chan_is_sublcd(ch) ? 2 : 0));
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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}
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static void lcdc_sys_write_data(void *handle, unsigned long data)
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{
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struct sh_mobile_lcdc_chan *ch = handle;
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lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW);
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
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(lcdc_chan_is_sublcd(ch) ? 2 : 0));
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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}
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static unsigned long lcdc_sys_read_data(void *handle)
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{
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struct sh_mobile_lcdc_chan *ch = handle;
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lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR);
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA |
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(lcdc_chan_is_sublcd(ch) ? 2 : 0));
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udelay(1);
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lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
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return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK;
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}
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|
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static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
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|
.write_index = lcdc_sys_write_index,
|
|
.write_data = lcdc_sys_write_data,
|
|
.read_data = lcdc_sys_read_data,
|
|
};
|
|
|
|
static int sh_mobile_lcdc_sginit(struct fb_info *info,
|
|
struct list_head *pagelist)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT;
|
|
struct page *page;
|
|
int nr_pages = 0;
|
|
|
|
sg_init_table(ch->sglist, nr_pages_max);
|
|
|
|
list_for_each_entry(page, pagelist, lru)
|
|
sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0);
|
|
|
|
return nr_pages;
|
|
}
|
|
|
|
static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
|
|
struct list_head *pagelist)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
|
|
|
|
/* enable clocks before accessing hardware */
|
|
sh_mobile_lcdc_clk_on(ch->lcdc);
|
|
|
|
/*
|
|
* It's possible to get here without anything on the pagelist via
|
|
* sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync()
|
|
* invocation. In the former case, the acceleration routines are
|
|
* stepped in to when using the framebuffer console causing the
|
|
* workqueue to be scheduled without any dirty pages on the list.
|
|
*
|
|
* Despite this, a panel update is still needed given that the
|
|
* acceleration routines have their own methods for writing in
|
|
* that still need to be updated.
|
|
*
|
|
* The fsync() and empty pagelist case could be optimized for,
|
|
* but we don't bother, as any application exhibiting such
|
|
* behaviour is fundamentally broken anyways.
|
|
*/
|
|
if (!list_empty(pagelist)) {
|
|
unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist);
|
|
|
|
/* trigger panel update */
|
|
dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
|
|
if (panel->start_transfer)
|
|
panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
|
|
lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
|
|
dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages,
|
|
DMA_TO_DEVICE);
|
|
} else {
|
|
if (panel->start_transfer)
|
|
panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
|
|
lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
|
|
}
|
|
}
|
|
|
|
static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)
|
|
{
|
|
struct fb_deferred_io *fbdefio = info->fbdefio;
|
|
|
|
if (fbdefio)
|
|
schedule_delayed_work(&info->deferred_work, fbdefio->delay);
|
|
}
|
|
|
|
static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
|
|
|
|
if (ch->tx_dev) {
|
|
int ret;
|
|
|
|
ret = ch->tx_dev->ops->display_on(ch->tx_dev);
|
|
if (ret < 0)
|
|
return;
|
|
|
|
if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED)
|
|
ch->info->state = FBINFO_STATE_SUSPENDED;
|
|
}
|
|
|
|
/* HDMI must be enabled before LCDC configuration */
|
|
if (panel->display_on)
|
|
panel->display_on();
|
|
}
|
|
|
|
static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
|
|
|
|
if (panel->display_off)
|
|
panel->display_off();
|
|
|
|
if (ch->tx_dev)
|
|
ch->tx_dev->ops->display_off(ch->tx_dev);
|
|
}
|
|
|
|
static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info);
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Format helpers
|
|
*/
|
|
|
|
struct sh_mobile_lcdc_format_info {
|
|
u32 fourcc;
|
|
unsigned int bpp;
|
|
bool yuv;
|
|
u32 lddfr;
|
|
};
|
|
|
|
static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = {
|
|
{
|
|
.fourcc = V4L2_PIX_FMT_RGB565,
|
|
.bpp = 16,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_RGB16,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_BGR24,
|
|
.bpp = 24,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_RGB24,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_BGR32,
|
|
.bpp = 32,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_ARGB32,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV12,
|
|
.bpp = 12,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_420,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV21,
|
|
.bpp = 12,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_420,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV16,
|
|
.bpp = 16,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_422,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV61,
|
|
.bpp = 16,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_422,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV24,
|
|
.bpp = 24,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_444,
|
|
}, {
|
|
.fourcc = V4L2_PIX_FMT_NV42,
|
|
.bpp = 24,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_444,
|
|
},
|
|
};
|
|
|
|
static const struct sh_mobile_lcdc_format_info *
|
|
sh_mobile_format_info(u32 fourcc)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) {
|
|
if (sh_mobile_format_infos[i].fourcc == fourcc)
|
|
return &sh_mobile_format_infos[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var)
|
|
{
|
|
if (var->grayscale > 1)
|
|
return var->grayscale;
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 16:
|
|
return V4L2_PIX_FMT_RGB565;
|
|
case 24:
|
|
return V4L2_PIX_FMT_BGR24;
|
|
case 32:
|
|
return V4L2_PIX_FMT_BGR32;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var)
|
|
{
|
|
return var->grayscale > 1;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Start, stop and IRQ
|
|
*/
|
|
|
|
static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = data;
|
|
struct sh_mobile_lcdc_chan *ch;
|
|
unsigned long ldintr;
|
|
int is_sub;
|
|
int k;
|
|
|
|
/* Acknowledge interrupts and disable further VSYNC End IRQs. */
|
|
ldintr = lcdc_read(priv, _LDINTR);
|
|
lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE);
|
|
|
|
/* figure out if this interrupt is for main or sub lcd */
|
|
is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0;
|
|
|
|
/* wake up channel and disable clocks */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
/* Frame End */
|
|
if (ldintr & LDINTR_FS) {
|
|
if (is_sub == lcdc_chan_is_sublcd(ch)) {
|
|
ch->frame_end = 1;
|
|
wake_up(&ch->frame_end_wait);
|
|
|
|
sh_mobile_lcdc_clk_off(priv);
|
|
}
|
|
}
|
|
|
|
/* VSYNC End */
|
|
if (ldintr & LDINTR_VES)
|
|
complete(&ch->vsync_completion);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_wait_for_vsync(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
unsigned long ldintr;
|
|
int ret;
|
|
|
|
/* Enable VSync End interrupt and be careful not to acknowledge any
|
|
* pending interrupt.
|
|
*/
|
|
ldintr = lcdc_read(ch->lcdc, _LDINTR);
|
|
ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK;
|
|
lcdc_write(ch->lcdc, _LDINTR, ldintr);
|
|
|
|
ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion,
|
|
msecs_to_jiffies(100));
|
|
if (!ret)
|
|
return -ETIMEDOUT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
|
|
int start)
|
|
{
|
|
unsigned long tmp = lcdc_read(priv, _LDCNT2R);
|
|
int k;
|
|
|
|
/* start or stop the lcdc */
|
|
if (start)
|
|
lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO);
|
|
else
|
|
lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO);
|
|
|
|
/* wait until power is applied/stopped on all channels */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
|
|
if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled)
|
|
while (1) {
|
|
tmp = lcdc_read_chan(&priv->ch[k], LDPMR)
|
|
& LDPMR_LPS;
|
|
if (start && tmp == LDPMR_LPS)
|
|
break;
|
|
if (!start && tmp == 0)
|
|
break;
|
|
cpu_relax();
|
|
}
|
|
|
|
if (!start)
|
|
lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */
|
|
}
|
|
|
|
static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
const struct fb_var_screeninfo *var = &ch->info->var;
|
|
const struct fb_videomode *mode = &ch->display.mode;
|
|
unsigned long h_total, hsync_pos, display_h_total;
|
|
u32 tmp;
|
|
|
|
tmp = ch->ldmt1r_value;
|
|
tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL;
|
|
tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL;
|
|
tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0;
|
|
tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0;
|
|
tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0;
|
|
tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0;
|
|
tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0;
|
|
lcdc_write_chan(ch, LDMT1R, tmp);
|
|
|
|
/* setup SYS bus */
|
|
lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r);
|
|
lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r);
|
|
|
|
/* horizontal configuration */
|
|
h_total = mode->xres + mode->hsync_len + mode->left_margin
|
|
+ mode->right_margin;
|
|
tmp = h_total / 8; /* HTCN */
|
|
tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */
|
|
lcdc_write_chan(ch, LDHCNR, tmp);
|
|
|
|
hsync_pos = mode->xres + mode->right_margin;
|
|
tmp = hsync_pos / 8; /* HSYNP */
|
|
tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */
|
|
lcdc_write_chan(ch, LDHSYNR, tmp);
|
|
|
|
/* vertical configuration */
|
|
tmp = mode->yres + mode->vsync_len + mode->upper_margin
|
|
+ mode->lower_margin; /* VTLN */
|
|
tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */
|
|
lcdc_write_chan(ch, LDVLNR, tmp);
|
|
|
|
tmp = mode->yres + mode->lower_margin; /* VSYNP */
|
|
tmp |= mode->vsync_len << 16; /* VSYNW */
|
|
lcdc_write_chan(ch, LDVSYNR, tmp);
|
|
|
|
/* Adjust horizontal synchronisation for HDMI */
|
|
display_h_total = mode->xres + mode->hsync_len + mode->left_margin
|
|
+ mode->right_margin;
|
|
tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16)
|
|
| ((mode->hsync_len & 7) << 8) | (hsync_pos & 7);
|
|
lcdc_write_chan(ch, LDHAJR, tmp);
|
|
lcdc_write_chan_mirror(ch, LDHAJR, tmp);
|
|
}
|
|
|
|
static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
u32 format = 0;
|
|
|
|
if (!ovl->enabled) {
|
|
lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
|
|
lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), 0);
|
|
lcdc_write(ovl->channel->lcdc, LDBCR,
|
|
LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
|
|
return;
|
|
}
|
|
|
|
ovl->base_addr_y = ovl->dma_handle;
|
|
ovl->base_addr_c = ovl->dma_handle
|
|
+ ovl->xres_virtual * ovl->yres_virtual;
|
|
|
|
switch (ovl->mode) {
|
|
case LCDC_OVERLAY_BLEND:
|
|
format = LDBBSIFR_EN | (ovl->alpha << LDBBSIFR_LAY_SHIFT);
|
|
break;
|
|
|
|
case LCDC_OVERLAY_ROP3:
|
|
format = LDBBSIFR_EN | LDBBSIFR_BRSEL
|
|
| (ovl->rop3 << LDBBSIFR_ROP3_SHIFT);
|
|
break;
|
|
}
|
|
|
|
switch (ovl->format->fourcc) {
|
|
case V4L2_PIX_FMT_RGB565:
|
|
case V4L2_PIX_FMT_NV21:
|
|
case V4L2_PIX_FMT_NV61:
|
|
case V4L2_PIX_FMT_NV42:
|
|
format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR24:
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV16:
|
|
case V4L2_PIX_FMT_NV24:
|
|
format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
default:
|
|
format |= LDBBSIFR_SWPL;
|
|
break;
|
|
}
|
|
|
|
switch (ovl->format->fourcc) {
|
|
case V4L2_PIX_FMT_RGB565:
|
|
format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR24:
|
|
format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
|
|
break;
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV21:
|
|
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
|
|
break;
|
|
case V4L2_PIX_FMT_NV16:
|
|
case V4L2_PIX_FMT_NV61:
|
|
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
|
|
break;
|
|
case V4L2_PIX_FMT_NV24:
|
|
case V4L2_PIX_FMT_NV42:
|
|
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
|
|
break;
|
|
}
|
|
|
|
lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
|
|
|
|
lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), format);
|
|
|
|
lcdc_write_overlay(ovl, LDBnBSSZR(ovl->index),
|
|
(ovl->yres << LDBBSSZR_BVSS_SHIFT) |
|
|
(ovl->xres << LDBBSSZR_BHSS_SHIFT));
|
|
lcdc_write_overlay(ovl, LDBnBLOCR(ovl->index),
|
|
(ovl->pos_y << LDBBLOCR_CVLC_SHIFT) |
|
|
(ovl->pos_x << LDBBLOCR_CHLC_SHIFT));
|
|
lcdc_write_overlay(ovl, LDBnBSMWR(ovl->index),
|
|
ovl->pitch << LDBBSMWR_BSMW_SHIFT);
|
|
|
|
lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
|
|
lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
|
|
|
|
lcdc_write(ovl->channel->lcdc, LDBCR,
|
|
LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
|
|
}
|
|
|
|
/*
|
|
* __sh_mobile_lcdc_start - Configure and start the LCDC
|
|
* @priv: LCDC device
|
|
*
|
|
* Configure all enabled channels and start the LCDC device. All external
|
|
* devices (clocks, MERAM, panels, ...) are not touched by this function.
|
|
*/
|
|
static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch;
|
|
unsigned long tmp;
|
|
int k, m;
|
|
|
|
/* Enable LCDC channels. Read data from external memory, avoid using the
|
|
* BEU for now.
|
|
*/
|
|
lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled);
|
|
|
|
/* Stop the LCDC first and disable all interrupts. */
|
|
sh_mobile_lcdc_start_stop(priv, 0);
|
|
lcdc_write(priv, _LDINTR, 0);
|
|
|
|
/* Configure power supply, dot clocks and start them. */
|
|
tmp = priv->lddckr;
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
/* Power supply */
|
|
lcdc_write_chan(ch, LDPMR, 0);
|
|
|
|
m = ch->cfg->clock_divider;
|
|
if (!m)
|
|
continue;
|
|
|
|
/* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
|
|
* denominator.
|
|
*/
|
|
lcdc_write_chan(ch, LDDCKPAT1R, 0);
|
|
lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
|
|
|
|
if (m == 1)
|
|
m = LDDCKR_MOSEL;
|
|
tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
|
|
}
|
|
|
|
lcdc_write(priv, _LDDCKR, tmp);
|
|
lcdc_write(priv, _LDDCKSTPR, 0);
|
|
lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0);
|
|
|
|
/* Setup geometry, format, frame buffer memory and operation mode. */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
sh_mobile_lcdc_geometry(ch);
|
|
|
|
tmp = ch->format->lddfr;
|
|
|
|
if (ch->format->yuv) {
|
|
switch (ch->colorspace) {
|
|
case V4L2_COLORSPACE_REC709:
|
|
tmp |= LDDFR_CF1;
|
|
break;
|
|
case V4L2_COLORSPACE_JPEG:
|
|
tmp |= LDDFR_CF0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
lcdc_write_chan(ch, LDDFR, tmp);
|
|
lcdc_write_chan(ch, LDMLSR, ch->line_size);
|
|
lcdc_write_chan(ch, LDSA1R, ch->base_addr_y);
|
|
if (ch->format->yuv)
|
|
lcdc_write_chan(ch, LDSA2R, ch->base_addr_c);
|
|
|
|
/* When using deferred I/O mode, configure the LCDC for one-shot
|
|
* operation and enable the frame end interrupt. Otherwise use
|
|
* continuous read mode.
|
|
*/
|
|
if (ch->ldmt1r_value & LDMT1R_IFM &&
|
|
ch->cfg->sys_bus_cfg.deferred_io_msec) {
|
|
lcdc_write_chan(ch, LDSM1R, LDSM1R_OS);
|
|
lcdc_write(priv, _LDINTR, LDINTR_FE);
|
|
} else {
|
|
lcdc_write_chan(ch, LDSM1R, 0);
|
|
}
|
|
}
|
|
|
|
/* Word and long word swap. */
|
|
switch (priv->ch[0].format->fourcc) {
|
|
case V4L2_PIX_FMT_RGB565:
|
|
case V4L2_PIX_FMT_NV21:
|
|
case V4L2_PIX_FMT_NV61:
|
|
case V4L2_PIX_FMT_NV42:
|
|
tmp = LDDDSR_LS | LDDDSR_WS;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR24:
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV16:
|
|
case V4L2_PIX_FMT_NV24:
|
|
tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
|
|
break;
|
|
case V4L2_PIX_FMT_BGR32:
|
|
default:
|
|
tmp = LDDDSR_LS;
|
|
break;
|
|
}
|
|
lcdc_write(priv, _LDDDSR, tmp);
|
|
|
|
/* Enable the display output. */
|
|
lcdc_write(priv, _LDCNT1R, LDCNT1R_DE);
|
|
sh_mobile_lcdc_start_stop(priv, 1);
|
|
priv->started = 1;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch;
|
|
unsigned long tmp;
|
|
int ret;
|
|
int k;
|
|
|
|
/* enable clocks before accessing the hardware */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
if (priv->ch[k].enabled)
|
|
sh_mobile_lcdc_clk_on(priv);
|
|
}
|
|
|
|
/* reset */
|
|
lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR);
|
|
lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0);
|
|
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
const struct sh_mobile_lcdc_panel_cfg *panel;
|
|
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
panel = &ch->cfg->panel_cfg;
|
|
if (panel->setup_sys) {
|
|
ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Compute frame buffer base address and pitch for each channel. */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
ch->base_addr_y = ch->dma_handle;
|
|
ch->base_addr_c = ch->dma_handle
|
|
+ ch->xres_virtual * ch->yres_virtual;
|
|
ch->line_size = ch->pitch;
|
|
}
|
|
|
|
for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) {
|
|
struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[k];
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
}
|
|
|
|
/* Start the LCDC. */
|
|
__sh_mobile_lcdc_start(priv);
|
|
|
|
/* Setup deferred I/O, tell the board code to enable the panels, and
|
|
* turn backlight on.
|
|
*/
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
tmp = ch->cfg->sys_bus_cfg.deferred_io_msec;
|
|
if (ch->ldmt1r_value & LDMT1R_IFM && tmp) {
|
|
ch->defio.deferred_io = sh_mobile_lcdc_deferred_io;
|
|
ch->defio.delay = msecs_to_jiffies(tmp);
|
|
ch->info->fbdefio = &ch->defio;
|
|
fb_deferred_io_init(ch->info);
|
|
}
|
|
|
|
sh_mobile_lcdc_display_on(ch);
|
|
|
|
if (ch->bl) {
|
|
ch->bl->props.power = FB_BLANK_UNBLANK;
|
|
backlight_update_status(ch->bl);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch;
|
|
int k;
|
|
|
|
/* clean up deferred io and ask board code to disable panel */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
|
|
ch = &priv->ch[k];
|
|
if (!ch->enabled)
|
|
continue;
|
|
|
|
/* deferred io mode:
|
|
* flush frame, and wait for frame end interrupt
|
|
* clean up deferred io and enable clock
|
|
*/
|
|
if (ch->info && ch->info->fbdefio) {
|
|
ch->frame_end = 0;
|
|
schedule_delayed_work(&ch->info->deferred_work, 0);
|
|
wait_event(ch->frame_end_wait, ch->frame_end);
|
|
fb_deferred_io_cleanup(ch->info);
|
|
ch->info->fbdefio = NULL;
|
|
sh_mobile_lcdc_clk_on(priv);
|
|
}
|
|
|
|
if (ch->bl) {
|
|
ch->bl->props.power = FB_BLANK_POWERDOWN;
|
|
backlight_update_status(ch->bl);
|
|
}
|
|
|
|
sh_mobile_lcdc_display_off(ch);
|
|
}
|
|
|
|
/* stop the lcdc */
|
|
if (priv->started) {
|
|
sh_mobile_lcdc_start_stop(priv, 0);
|
|
priv->started = 0;
|
|
}
|
|
|
|
/* stop clocks */
|
|
for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
|
|
if (priv->ch[k].enabled)
|
|
sh_mobile_lcdc_clk_off(priv);
|
|
}
|
|
|
|
static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
if (var->xres > MAX_XRES || var->yres > MAX_YRES)
|
|
return -EINVAL;
|
|
|
|
/* Make sure the virtual resolution is at least as big as the visible
|
|
* resolution.
|
|
*/
|
|
if (var->xres_virtual < var->xres)
|
|
var->xres_virtual = var->xres;
|
|
if (var->yres_virtual < var->yres)
|
|
var->yres_virtual = var->yres;
|
|
|
|
if (sh_mobile_format_is_fourcc(var)) {
|
|
const struct sh_mobile_lcdc_format_info *format;
|
|
|
|
format = sh_mobile_format_info(var->grayscale);
|
|
if (format == NULL)
|
|
return -EINVAL;
|
|
var->bits_per_pixel = format->bpp;
|
|
|
|
/* Default to RGB and JPEG color-spaces for RGB and YUV formats
|
|
* respectively.
|
|
*/
|
|
if (!format->yuv)
|
|
var->colorspace = V4L2_COLORSPACE_SRGB;
|
|
else if (var->colorspace != V4L2_COLORSPACE_REC709)
|
|
var->colorspace = V4L2_COLORSPACE_JPEG;
|
|
} else {
|
|
if (var->bits_per_pixel <= 16) { /* RGB 565 */
|
|
var->bits_per_pixel = 16;
|
|
var->red.offset = 11;
|
|
var->red.length = 5;
|
|
var->green.offset = 5;
|
|
var->green.length = 6;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 5;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
} else if (var->bits_per_pixel <= 24) { /* RGB 888 */
|
|
var->bits_per_pixel = 24;
|
|
var->red.offset = 16;
|
|
var->red.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.length = 8;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 8;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
} else if (var->bits_per_pixel <= 32) { /* RGBA 888 */
|
|
var->bits_per_pixel = 32;
|
|
var->red.offset = 16;
|
|
var->red.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.length = 8;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 8;
|
|
var->transp.offset = 24;
|
|
var->transp.length = 8;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
var->red.msb_right = 0;
|
|
var->green.msb_right = 0;
|
|
var->blue.msb_right = 0;
|
|
var->transp.msb_right = 0;
|
|
}
|
|
|
|
/* Make sure we don't exceed our allocated memory. */
|
|
if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 >
|
|
info->fix.smem_len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Frame buffer operations - Overlays
|
|
*/
|
|
|
|
static ssize_t
|
|
overlay_alpha_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->alpha);
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_alpha_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
unsigned int alpha;
|
|
char *endp;
|
|
|
|
alpha = simple_strtoul(buf, &endp, 10);
|
|
if (isspace(*endp))
|
|
endp++;
|
|
|
|
if (endp - buf != count)
|
|
return -EINVAL;
|
|
|
|
if (alpha > 255)
|
|
return -EINVAL;
|
|
|
|
if (ovl->alpha != alpha) {
|
|
ovl->alpha = alpha;
|
|
|
|
if (ovl->mode == LCDC_OVERLAY_BLEND && ovl->enabled)
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->mode);
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_mode_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
unsigned int mode;
|
|
char *endp;
|
|
|
|
mode = simple_strtoul(buf, &endp, 10);
|
|
if (isspace(*endp))
|
|
endp++;
|
|
|
|
if (endp - buf != count)
|
|
return -EINVAL;
|
|
|
|
if (mode != LCDC_OVERLAY_BLEND && mode != LCDC_OVERLAY_ROP3)
|
|
return -EINVAL;
|
|
|
|
if (ovl->mode != mode) {
|
|
ovl->mode = mode;
|
|
|
|
if (ovl->enabled)
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_position_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
return scnprintf(buf, PAGE_SIZE, "%d,%d\n", ovl->pos_x, ovl->pos_y);
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_position_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
char *endp;
|
|
int pos_x;
|
|
int pos_y;
|
|
|
|
pos_x = simple_strtol(buf, &endp, 10);
|
|
if (*endp != ',')
|
|
return -EINVAL;
|
|
|
|
pos_y = simple_strtol(endp + 1, &endp, 10);
|
|
if (isspace(*endp))
|
|
endp++;
|
|
|
|
if (endp - buf != count)
|
|
return -EINVAL;
|
|
|
|
if (ovl->pos_x != pos_x || ovl->pos_y != pos_y) {
|
|
ovl->pos_x = pos_x;
|
|
ovl->pos_y = pos_y;
|
|
|
|
if (ovl->enabled)
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_rop3_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->rop3);
|
|
}
|
|
|
|
static ssize_t
|
|
overlay_rop3_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
unsigned int rop3;
|
|
char *endp;
|
|
|
|
rop3 = simple_strtoul(buf, &endp, 10);
|
|
if (isspace(*endp))
|
|
endp++;
|
|
|
|
if (endp - buf != count)
|
|
return -EINVAL;
|
|
|
|
if (rop3 > 255)
|
|
return -EINVAL;
|
|
|
|
if (ovl->rop3 != rop3) {
|
|
ovl->rop3 = rop3;
|
|
|
|
if (ovl->mode == LCDC_OVERLAY_ROP3 && ovl->enabled)
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct device_attribute overlay_sysfs_attrs[] = {
|
|
__ATTR(ovl_alpha, S_IRUGO|S_IWUSR,
|
|
overlay_alpha_show, overlay_alpha_store),
|
|
__ATTR(ovl_mode, S_IRUGO|S_IWUSR,
|
|
overlay_mode_show, overlay_mode_store),
|
|
__ATTR(ovl_position, S_IRUGO|S_IWUSR,
|
|
overlay_position_show, overlay_position_store),
|
|
__ATTR(ovl_rop3, S_IRUGO|S_IWUSR,
|
|
overlay_rop3_show, overlay_rop3_store),
|
|
};
|
|
|
|
static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix = {
|
|
.id = "SH Mobile LCDC",
|
|
.type = FB_TYPE_PACKED_PIXELS,
|
|
.visual = FB_VISUAL_TRUECOLOR,
|
|
.accel = FB_ACCEL_NONE,
|
|
.xpanstep = 1,
|
|
.ypanstep = 1,
|
|
.ywrapstep = 0,
|
|
.capabilities = FB_CAP_FOURCC,
|
|
};
|
|
|
|
static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
unsigned long base_addr_y;
|
|
unsigned long base_addr_c;
|
|
unsigned long y_offset;
|
|
unsigned long c_offset;
|
|
|
|
if (!ovl->format->yuv) {
|
|
y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset)
|
|
* ovl->format->bpp / 8;
|
|
c_offset = 0;
|
|
} else {
|
|
unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1;
|
|
unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1;
|
|
|
|
y_offset = var->yoffset * ovl->xres_virtual + var->xoffset;
|
|
c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub
|
|
+ var->xoffset * 2 / xsub;
|
|
}
|
|
|
|
/* If the Y offset hasn't changed, the C offset hasn't either. There's
|
|
* nothing to do in that case.
|
|
*/
|
|
if (y_offset == ovl->pan_y_offset)
|
|
return 0;
|
|
|
|
/* Set the source address for the next refresh */
|
|
base_addr_y = ovl->dma_handle + y_offset;
|
|
base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual
|
|
+ c_offset;
|
|
|
|
ovl->base_addr_y = base_addr_y;
|
|
ovl->base_addr_c = base_addr_c;
|
|
ovl->pan_y_offset = y_offset;
|
|
|
|
lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
|
|
|
|
lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
|
|
lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
|
|
|
|
lcdc_write(ovl->channel->lcdc, LDBCR,
|
|
LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_overlay_ioctl(struct fb_info *info, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
switch (cmd) {
|
|
case FBIO_WAITFORVSYNC:
|
|
return sh_mobile_lcdc_wait_for_vsync(ovl->channel);
|
|
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
return __sh_mobile_lcdc_check_var(var, info);
|
|
}
|
|
|
|
static int sh_mobile_lcdc_overlay_set_par(struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
ovl->format =
|
|
sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
|
|
|
|
ovl->xres = info->var.xres;
|
|
ovl->xres_virtual = info->var.xres_virtual;
|
|
ovl->yres = info->var.yres;
|
|
ovl->yres_virtual = info->var.yres_virtual;
|
|
|
|
if (ovl->format->yuv)
|
|
ovl->pitch = info->var.xres_virtual;
|
|
else
|
|
ovl->pitch = info->var.xres_virtual * ovl->format->bpp / 8;
|
|
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
|
|
info->fix.line_length = ovl->pitch;
|
|
|
|
if (sh_mobile_format_is_fourcc(&info->var)) {
|
|
info->fix.type = FB_TYPE_FOURCC;
|
|
info->fix.visual = FB_VISUAL_FOURCC;
|
|
} else {
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Overlay blanking. Disable the overlay when blanked. */
|
|
static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
ovl->enabled = !blank;
|
|
sh_mobile_lcdc_overlay_setup(ovl);
|
|
|
|
/* Prevent the backlight from receiving a blanking event by returning
|
|
* a non-zero value.
|
|
*/
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma)
|
|
{
|
|
struct sh_mobile_lcdc_overlay *ovl = info->par;
|
|
|
|
return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem,
|
|
ovl->dma_handle, ovl->fb_size);
|
|
}
|
|
|
|
static const struct fb_ops sh_mobile_lcdc_overlay_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_read = fb_sys_read,
|
|
.fb_write = fb_sys_write,
|
|
.fb_fillrect = sys_fillrect,
|
|
.fb_copyarea = sys_copyarea,
|
|
.fb_imageblit = sys_imageblit,
|
|
.fb_blank = sh_mobile_lcdc_overlay_blank,
|
|
.fb_pan_display = sh_mobile_lcdc_overlay_pan,
|
|
.fb_ioctl = sh_mobile_lcdc_overlay_ioctl,
|
|
.fb_check_var = sh_mobile_lcdc_overlay_check_var,
|
|
.fb_set_par = sh_mobile_lcdc_overlay_set_par,
|
|
.fb_mmap = sh_mobile_lcdc_overlay_mmap,
|
|
};
|
|
|
|
static void
|
|
sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
struct fb_info *info = ovl->info;
|
|
|
|
if (info == NULL || info->dev == NULL)
|
|
return;
|
|
|
|
unregister_framebuffer(ovl->info);
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
struct sh_mobile_lcdc_priv *lcdc = ovl->channel->lcdc;
|
|
struct fb_info *info = ovl->info;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
if (info == NULL)
|
|
return 0;
|
|
|
|
ret = register_framebuffer(info);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
dev_info(lcdc->dev, "registered %s/overlay %u as %dx%d %dbpp.\n",
|
|
dev_name(lcdc->dev), ovl->index, info->var.xres,
|
|
info->var.yres, info->var.bits_per_pixel);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(overlay_sysfs_attrs); ++i) {
|
|
ret = device_create_file(info->dev, &overlay_sysfs_attrs[i]);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
struct fb_info *info = ovl->info;
|
|
|
|
if (info == NULL || info->device == NULL)
|
|
return;
|
|
|
|
framebuffer_release(info);
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = ovl->channel->lcdc;
|
|
struct fb_var_screeninfo *var;
|
|
struct fb_info *info;
|
|
|
|
/* Allocate and initialize the frame buffer device. */
|
|
info = framebuffer_alloc(0, priv->dev);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
ovl->info = info;
|
|
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
info->fbops = &sh_mobile_lcdc_overlay_ops;
|
|
info->device = priv->dev;
|
|
info->screen_buffer = ovl->fb_mem;
|
|
info->par = ovl;
|
|
|
|
/* Initialize fixed screen information. Restrict pan to 2 lines steps
|
|
* for NV12 and NV21.
|
|
*/
|
|
info->fix = sh_mobile_lcdc_overlay_fix;
|
|
snprintf(info->fix.id, sizeof(info->fix.id),
|
|
"SH Mobile LCDC Overlay %u", ovl->index);
|
|
info->fix.smem_start = ovl->dma_handle;
|
|
info->fix.smem_len = ovl->fb_size;
|
|
info->fix.line_length = ovl->pitch;
|
|
|
|
if (ovl->format->yuv)
|
|
info->fix.visual = FB_VISUAL_FOURCC;
|
|
else
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
|
|
switch (ovl->format->fourcc) {
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV21:
|
|
info->fix.ypanstep = 2;
|
|
/* Fall through */
|
|
case V4L2_PIX_FMT_NV16:
|
|
case V4L2_PIX_FMT_NV61:
|
|
info->fix.xpanstep = 2;
|
|
}
|
|
|
|
/* Initialize variable screen information. */
|
|
var = &info->var;
|
|
memset(var, 0, sizeof(*var));
|
|
var->xres = ovl->xres;
|
|
var->yres = ovl->yres;
|
|
var->xres_virtual = ovl->xres_virtual;
|
|
var->yres_virtual = ovl->yres_virtual;
|
|
var->activate = FB_ACTIVATE_NOW;
|
|
|
|
/* Use the legacy API by default for RGB formats, and the FOURCC API
|
|
* for YUV formats.
|
|
*/
|
|
if (!ovl->format->yuv)
|
|
var->bits_per_pixel = ovl->format->bpp;
|
|
else
|
|
var->grayscale = ovl->format->fourcc;
|
|
|
|
return sh_mobile_lcdc_overlay_check_var(var, info);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Frame buffer operations - main frame buffer
|
|
*/
|
|
|
|
static int sh_mobile_lcdc_setcolreg(u_int regno,
|
|
u_int red, u_int green, u_int blue,
|
|
u_int transp, struct fb_info *info)
|
|
{
|
|
u32 *palette = info->pseudo_palette;
|
|
|
|
if (regno >= PALETTE_NR)
|
|
return -EINVAL;
|
|
|
|
/* only FB_VISUAL_TRUECOLOR supported */
|
|
|
|
red >>= 16 - info->var.red.length;
|
|
green >>= 16 - info->var.green.length;
|
|
blue >>= 16 - info->var.blue.length;
|
|
transp >>= 16 - info->var.transp.length;
|
|
|
|
palette[regno] = (red << info->var.red.offset) |
|
|
(green << info->var.green.offset) |
|
|
(blue << info->var.blue.offset) |
|
|
(transp << info->var.transp.offset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct fb_fix_screeninfo sh_mobile_lcdc_fix = {
|
|
.id = "SH Mobile LCDC",
|
|
.type = FB_TYPE_PACKED_PIXELS,
|
|
.visual = FB_VISUAL_TRUECOLOR,
|
|
.accel = FB_ACCEL_NONE,
|
|
.xpanstep = 1,
|
|
.ypanstep = 1,
|
|
.ywrapstep = 0,
|
|
.capabilities = FB_CAP_FOURCC,
|
|
};
|
|
|
|
static void sh_mobile_lcdc_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *rect)
|
|
{
|
|
sys_fillrect(info, rect);
|
|
sh_mobile_lcdc_deferred_io_touch(info);
|
|
}
|
|
|
|
static void sh_mobile_lcdc_copyarea(struct fb_info *info,
|
|
const struct fb_copyarea *area)
|
|
{
|
|
sys_copyarea(info, area);
|
|
sh_mobile_lcdc_deferred_io_touch(info);
|
|
}
|
|
|
|
static void sh_mobile_lcdc_imageblit(struct fb_info *info,
|
|
const struct fb_image *image)
|
|
{
|
|
sys_imageblit(info, image);
|
|
sh_mobile_lcdc_deferred_io_touch(info);
|
|
}
|
|
|
|
static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
struct sh_mobile_lcdc_priv *priv = ch->lcdc;
|
|
unsigned long ldrcntr;
|
|
unsigned long base_addr_y, base_addr_c;
|
|
unsigned long y_offset;
|
|
unsigned long c_offset;
|
|
|
|
if (!ch->format->yuv) {
|
|
y_offset = (var->yoffset * ch->xres_virtual + var->xoffset)
|
|
* ch->format->bpp / 8;
|
|
c_offset = 0;
|
|
} else {
|
|
unsigned int xsub = ch->format->bpp < 24 ? 2 : 1;
|
|
unsigned int ysub = ch->format->bpp < 16 ? 2 : 1;
|
|
|
|
y_offset = var->yoffset * ch->xres_virtual + var->xoffset;
|
|
c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub
|
|
+ var->xoffset * 2 / xsub;
|
|
}
|
|
|
|
/* If the Y offset hasn't changed, the C offset hasn't either. There's
|
|
* nothing to do in that case.
|
|
*/
|
|
if (y_offset == ch->pan_y_offset)
|
|
return 0;
|
|
|
|
/* Set the source address for the next refresh */
|
|
base_addr_y = ch->dma_handle + y_offset;
|
|
base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
|
|
+ c_offset;
|
|
|
|
ch->base_addr_y = base_addr_y;
|
|
ch->base_addr_c = base_addr_c;
|
|
ch->pan_y_offset = y_offset;
|
|
|
|
lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
|
|
if (ch->format->yuv)
|
|
lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
|
|
|
|
ldrcntr = lcdc_read(priv, _LDRCNTR);
|
|
if (lcdc_chan_is_sublcd(ch))
|
|
lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
|
|
else
|
|
lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
|
|
|
|
|
|
sh_mobile_lcdc_deferred_io_touch(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_ioctl(struct fb_info *info, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
int retval;
|
|
|
|
switch (cmd) {
|
|
case FBIO_WAITFORVSYNC:
|
|
retval = sh_mobile_lcdc_wait_for_vsync(ch);
|
|
break;
|
|
|
|
default:
|
|
retval = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
static void sh_mobile_fb_reconfig(struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
struct fb_var_screeninfo var;
|
|
struct fb_videomode mode;
|
|
|
|
if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par))
|
|
/* More framebuffer users are active */
|
|
return;
|
|
|
|
fb_var_to_videomode(&mode, &info->var);
|
|
|
|
if (fb_mode_is_equal(&ch->display.mode, &mode))
|
|
return;
|
|
|
|
/* Display has been re-plugged, framebuffer is free now, reconfigure */
|
|
var = info->var;
|
|
fb_videomode_to_var(&var, &ch->display.mode);
|
|
var.width = ch->display.width;
|
|
var.height = ch->display.height;
|
|
var.activate = FB_ACTIVATE_NOW;
|
|
|
|
if (fb_set_var(info, &var) < 0)
|
|
/* Couldn't reconfigure, hopefully, can continue as before */
|
|
return;
|
|
|
|
fbcon_update_vcs(info, true);
|
|
}
|
|
|
|
/*
|
|
* Locking: both .fb_release() and .fb_open() are called with info->lock held if
|
|
* user == 1, or with console sem held, if user == 0.
|
|
*/
|
|
static int sh_mobile_lcdc_release(struct fb_info *info, int user)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
|
|
mutex_lock(&ch->open_lock);
|
|
dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
|
|
|
|
ch->use_count--;
|
|
|
|
/* Nothing to reconfigure, when called from fbcon */
|
|
if (user) {
|
|
console_lock();
|
|
sh_mobile_fb_reconfig(info);
|
|
console_unlock();
|
|
}
|
|
|
|
mutex_unlock(&ch->open_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_open(struct fb_info *info, int user)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
|
|
mutex_lock(&ch->open_lock);
|
|
ch->use_count++;
|
|
|
|
dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
|
|
mutex_unlock(&ch->open_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
struct sh_mobile_lcdc_priv *p = ch->lcdc;
|
|
unsigned int best_dist = (unsigned int)-1;
|
|
unsigned int best_xres = 0;
|
|
unsigned int best_yres = 0;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
/* If board code provides us with a list of available modes, make sure
|
|
* we use one of them. Find the mode closest to the requested one. The
|
|
* distance between two modes is defined as the size of the
|
|
* non-overlapping parts of the two rectangles.
|
|
*/
|
|
for (i = 0; i < ch->cfg->num_modes; ++i) {
|
|
const struct fb_videomode *mode = &ch->cfg->lcd_modes[i];
|
|
unsigned int dist;
|
|
|
|
/* We can only round up. */
|
|
if (var->xres > mode->xres || var->yres > mode->yres)
|
|
continue;
|
|
|
|
dist = var->xres * var->yres + mode->xres * mode->yres
|
|
- 2 * min(var->xres, mode->xres)
|
|
* min(var->yres, mode->yres);
|
|
|
|
if (dist < best_dist) {
|
|
best_xres = mode->xres;
|
|
best_yres = mode->yres;
|
|
best_dist = dist;
|
|
}
|
|
}
|
|
|
|
/* If no available mode can be used, return an error. */
|
|
if (ch->cfg->num_modes != 0) {
|
|
if (best_dist == (unsigned int)-1)
|
|
return -EINVAL;
|
|
|
|
var->xres = best_xres;
|
|
var->yres = best_yres;
|
|
}
|
|
|
|
ret = __sh_mobile_lcdc_check_var(var, info);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* only accept the forced_fourcc for dual channel configurations */
|
|
if (p->forced_fourcc &&
|
|
p->forced_fourcc != sh_mobile_format_fourcc(var))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_set_par(struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
int ret;
|
|
|
|
sh_mobile_lcdc_stop(ch->lcdc);
|
|
|
|
ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
|
|
ch->colorspace = info->var.colorspace;
|
|
|
|
ch->xres = info->var.xres;
|
|
ch->xres_virtual = info->var.xres_virtual;
|
|
ch->yres = info->var.yres;
|
|
ch->yres_virtual = info->var.yres_virtual;
|
|
|
|
if (ch->format->yuv)
|
|
ch->pitch = info->var.xres_virtual;
|
|
else
|
|
ch->pitch = info->var.xres_virtual * ch->format->bpp / 8;
|
|
|
|
ret = sh_mobile_lcdc_start(ch->lcdc);
|
|
if (ret < 0)
|
|
dev_err(info->dev, "%s: unable to restart LCDC\n", __func__);
|
|
|
|
info->fix.line_length = ch->pitch;
|
|
|
|
if (sh_mobile_format_is_fourcc(&info->var)) {
|
|
info->fix.type = FB_TYPE_FOURCC;
|
|
info->fix.visual = FB_VISUAL_FOURCC;
|
|
} else {
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Screen blanking. Behavior is as follows:
|
|
* FB_BLANK_UNBLANK: screen unblanked, clocks enabled
|
|
* FB_BLANK_NORMAL: screen blanked, clocks enabled
|
|
* FB_BLANK_VSYNC,
|
|
* FB_BLANK_HSYNC,
|
|
* FB_BLANK_POWEROFF: screen blanked, clocks disabled
|
|
*/
|
|
static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
struct sh_mobile_lcdc_priv *p = ch->lcdc;
|
|
|
|
/* blank the screen? */
|
|
if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) {
|
|
struct fb_fillrect rect = {
|
|
.width = ch->xres,
|
|
.height = ch->yres,
|
|
};
|
|
sh_mobile_lcdc_fillrect(info, &rect);
|
|
}
|
|
/* turn clocks on? */
|
|
if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) {
|
|
sh_mobile_lcdc_clk_on(p);
|
|
}
|
|
/* turn clocks off? */
|
|
if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) {
|
|
/* make sure the screen is updated with the black fill before
|
|
* switching the clocks off. one vsync is not enough since
|
|
* blanking may occur in the middle of a refresh. deferred io
|
|
* mode will reenable the clocks and update the screen in time,
|
|
* so it does not need this. */
|
|
if (!info->fbdefio) {
|
|
sh_mobile_lcdc_wait_for_vsync(ch);
|
|
sh_mobile_lcdc_wait_for_vsync(ch);
|
|
}
|
|
sh_mobile_lcdc_clk_off(p);
|
|
}
|
|
|
|
ch->blank_status = blank;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = info->par;
|
|
|
|
return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem,
|
|
ch->dma_handle, ch->fb_size);
|
|
}
|
|
|
|
static const struct fb_ops sh_mobile_lcdc_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_setcolreg = sh_mobile_lcdc_setcolreg,
|
|
.fb_read = fb_sys_read,
|
|
.fb_write = fb_sys_write,
|
|
.fb_fillrect = sh_mobile_lcdc_fillrect,
|
|
.fb_copyarea = sh_mobile_lcdc_copyarea,
|
|
.fb_imageblit = sh_mobile_lcdc_imageblit,
|
|
.fb_blank = sh_mobile_lcdc_blank,
|
|
.fb_pan_display = sh_mobile_lcdc_pan,
|
|
.fb_ioctl = sh_mobile_lcdc_ioctl,
|
|
.fb_open = sh_mobile_lcdc_open,
|
|
.fb_release = sh_mobile_lcdc_release,
|
|
.fb_check_var = sh_mobile_lcdc_check_var,
|
|
.fb_set_par = sh_mobile_lcdc_set_par,
|
|
.fb_mmap = sh_mobile_lcdc_mmap,
|
|
};
|
|
|
|
static void
|
|
sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
if (ch->info && ch->info->dev)
|
|
unregister_framebuffer(ch->info);
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
struct fb_info *info = ch->info;
|
|
int ret;
|
|
|
|
if (info->fbdefio) {
|
|
ch->sglist = vmalloc(sizeof(struct scatterlist) *
|
|
ch->fb_size >> PAGE_SHIFT);
|
|
if (!ch->sglist)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->bl_dev = ch->bl;
|
|
|
|
ret = register_framebuffer(info);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n",
|
|
dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ?
|
|
"mainlcd" : "sublcd", info->var.xres, info->var.yres,
|
|
info->var.bits_per_pixel);
|
|
|
|
/* deferred io mode: disable clock to save power */
|
|
if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
|
|
sh_mobile_lcdc_clk_off(ch->lcdc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
struct fb_info *info = ch->info;
|
|
|
|
if (!info || !info->device)
|
|
return;
|
|
|
|
vfree(ch->sglist);
|
|
|
|
fb_dealloc_cmap(&info->cmap);
|
|
framebuffer_release(info);
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
|
|
const struct fb_videomode *modes,
|
|
unsigned int num_modes)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = ch->lcdc;
|
|
struct fb_var_screeninfo *var;
|
|
struct fb_info *info;
|
|
int ret;
|
|
|
|
/* Allocate and initialize the frame buffer device. Create the modes
|
|
* list and allocate the color map.
|
|
*/
|
|
info = framebuffer_alloc(0, priv->dev);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
ch->info = info;
|
|
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
info->fbops = &sh_mobile_lcdc_ops;
|
|
info->device = priv->dev;
|
|
info->screen_buffer = ch->fb_mem;
|
|
info->pseudo_palette = &ch->pseudo_palette;
|
|
info->par = ch;
|
|
|
|
fb_videomode_to_modelist(modes, num_modes, &info->modelist);
|
|
|
|
ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
|
|
if (ret < 0) {
|
|
dev_err(priv->dev, "unable to allocate cmap\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Initialize fixed screen information. Restrict pan to 2 lines steps
|
|
* for NV12 and NV21.
|
|
*/
|
|
info->fix = sh_mobile_lcdc_fix;
|
|
info->fix.smem_start = ch->dma_handle;
|
|
info->fix.smem_len = ch->fb_size;
|
|
info->fix.line_length = ch->pitch;
|
|
|
|
if (ch->format->yuv)
|
|
info->fix.visual = FB_VISUAL_FOURCC;
|
|
else
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
|
|
switch (ch->format->fourcc) {
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV21:
|
|
info->fix.ypanstep = 2;
|
|
/* Fall through */
|
|
case V4L2_PIX_FMT_NV16:
|
|
case V4L2_PIX_FMT_NV61:
|
|
info->fix.xpanstep = 2;
|
|
}
|
|
|
|
/* Initialize variable screen information using the first mode as
|
|
* default.
|
|
*/
|
|
var = &info->var;
|
|
fb_videomode_to_var(var, modes);
|
|
var->width = ch->display.width;
|
|
var->height = ch->display.height;
|
|
var->xres_virtual = ch->xres_virtual;
|
|
var->yres_virtual = ch->yres_virtual;
|
|
var->activate = FB_ACTIVATE_NOW;
|
|
|
|
/* Use the legacy API by default for RGB formats, and the FOURCC API
|
|
* for YUV formats.
|
|
*/
|
|
if (!ch->format->yuv)
|
|
var->bits_per_pixel = ch->format->bpp;
|
|
else
|
|
var->grayscale = ch->format->fourcc;
|
|
|
|
ret = sh_mobile_lcdc_check_var(var, info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Backlight
|
|
*/
|
|
|
|
static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
|
|
int brightness = bdev->props.brightness;
|
|
|
|
if (bdev->props.power != FB_BLANK_UNBLANK ||
|
|
bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
|
|
brightness = 0;
|
|
|
|
ch->bl_brightness = brightness;
|
|
return ch->cfg->bl_info.set_brightness(brightness);
|
|
}
|
|
|
|
static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
|
|
{
|
|
struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
|
|
|
|
return ch->bl_brightness;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
|
|
struct fb_info *info)
|
|
{
|
|
return (info->bl_dev == bdev);
|
|
}
|
|
|
|
static const struct backlight_ops sh_mobile_lcdc_bl_ops = {
|
|
.options = BL_CORE_SUSPENDRESUME,
|
|
.update_status = sh_mobile_lcdc_update_bl,
|
|
.get_brightness = sh_mobile_lcdc_get_brightness,
|
|
.check_fb = sh_mobile_lcdc_check_fb,
|
|
};
|
|
|
|
static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
|
|
struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
struct backlight_device *bl;
|
|
|
|
bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch,
|
|
&sh_mobile_lcdc_bl_ops, NULL);
|
|
if (IS_ERR(bl)) {
|
|
dev_err(parent, "unable to register backlight device: %ld\n",
|
|
PTR_ERR(bl));
|
|
return NULL;
|
|
}
|
|
|
|
bl->props.max_brightness = ch->cfg->bl_info.max_brightness;
|
|
bl->props.brightness = bl->props.max_brightness;
|
|
backlight_update_status(bl);
|
|
|
|
return bl;
|
|
}
|
|
|
|
static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev)
|
|
{
|
|
backlight_device_unregister(bdev);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Power management
|
|
*/
|
|
|
|
static int sh_mobile_lcdc_suspend(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
|
|
sh_mobile_lcdc_stop(platform_get_drvdata(pdev));
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_resume(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
|
|
return sh_mobile_lcdc_start(platform_get_drvdata(pdev));
|
|
}
|
|
|
|
static int sh_mobile_lcdc_runtime_suspend(struct device *dev)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
|
|
|
|
/* turn off LCDC hardware */
|
|
lcdc_write(priv, _LDCNT1R, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_runtime_resume(struct device *dev)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
|
|
|
|
__sh_mobile_lcdc_start(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
|
|
.suspend = sh_mobile_lcdc_suspend,
|
|
.resume = sh_mobile_lcdc_resume,
|
|
.runtime_suspend = sh_mobile_lcdc_runtime_suspend,
|
|
.runtime_resume = sh_mobile_lcdc_runtime_resume,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Framebuffer notifier
|
|
*/
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Probe/remove and driver init/exit
|
|
*/
|
|
|
|
static const struct fb_videomode default_720p = {
|
|
.name = "HDMI 720p",
|
|
.xres = 1280,
|
|
.yres = 720,
|
|
|
|
.left_margin = 220,
|
|
.right_margin = 110,
|
|
.hsync_len = 40,
|
|
|
|
.upper_margin = 20,
|
|
.lower_margin = 5,
|
|
.vsync_len = 5,
|
|
|
|
.pixclock = 13468,
|
|
.refresh = 60,
|
|
.sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
|
|
};
|
|
|
|
static int sh_mobile_lcdc_remove(struct platform_device *pdev)
|
|
{
|
|
struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(priv->overlays); i++)
|
|
sh_mobile_lcdc_overlay_fb_unregister(&priv->overlays[i]);
|
|
for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
|
|
sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]);
|
|
|
|
sh_mobile_lcdc_stop(priv);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) {
|
|
struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
|
|
|
|
sh_mobile_lcdc_overlay_fb_cleanup(ovl);
|
|
|
|
if (ovl->fb_mem)
|
|
dma_free_coherent(&pdev->dev, ovl->fb_size,
|
|
ovl->fb_mem, ovl->dma_handle);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
|
|
struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
|
|
|
|
if (ch->tx_dev) {
|
|
ch->tx_dev->lcdc = NULL;
|
|
module_put(ch->cfg->tx_dev->dev.driver->owner);
|
|
}
|
|
|
|
sh_mobile_lcdc_channel_fb_cleanup(ch);
|
|
|
|
if (ch->fb_mem)
|
|
dma_free_coherent(&pdev->dev, ch->fb_size,
|
|
ch->fb_mem, ch->dma_handle);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
|
|
struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
|
|
|
|
if (ch->bl)
|
|
sh_mobile_lcdc_bl_remove(ch->bl);
|
|
mutex_destroy(&ch->open_lock);
|
|
}
|
|
|
|
if (priv->dot_clk) {
|
|
pm_runtime_disable(&pdev->dev);
|
|
clk_put(priv->dot_clk);
|
|
}
|
|
|
|
if (priv->base)
|
|
iounmap(priv->base);
|
|
|
|
if (priv->irq)
|
|
free_irq(priv->irq, priv);
|
|
kfree(priv);
|
|
return 0;
|
|
}
|
|
|
|
static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
int interface_type = ch->cfg->interface_type;
|
|
|
|
switch (interface_type) {
|
|
case RGB8:
|
|
case RGB9:
|
|
case RGB12A:
|
|
case RGB12B:
|
|
case RGB16:
|
|
case RGB18:
|
|
case RGB24:
|
|
case SYS8A:
|
|
case SYS8B:
|
|
case SYS8C:
|
|
case SYS8D:
|
|
case SYS9:
|
|
case SYS12:
|
|
case SYS16A:
|
|
case SYS16B:
|
|
case SYS16C:
|
|
case SYS18:
|
|
case SYS24:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* SUBLCD only supports SYS interface */
|
|
if (lcdc_chan_is_sublcd(ch)) {
|
|
if (!(interface_type & LDMT1R_IFM))
|
|
return -EINVAL;
|
|
|
|
interface_type &= ~LDMT1R_IFM;
|
|
}
|
|
|
|
ch->ldmt1r_value = interface_type;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_overlay *ovl)
|
|
{
|
|
const struct sh_mobile_lcdc_format_info *format;
|
|
struct device *dev = ovl->channel->lcdc->dev;
|
|
int ret;
|
|
|
|
if (ovl->cfg->fourcc == 0)
|
|
return 0;
|
|
|
|
/* Validate the format. */
|
|
format = sh_mobile_format_info(ovl->cfg->fourcc);
|
|
if (format == NULL) {
|
|
dev_err(dev, "Invalid FOURCC %08x\n", ovl->cfg->fourcc);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ovl->enabled = false;
|
|
ovl->mode = LCDC_OVERLAY_BLEND;
|
|
ovl->alpha = 255;
|
|
ovl->rop3 = 0;
|
|
ovl->pos_x = 0;
|
|
ovl->pos_y = 0;
|
|
|
|
/* The default Y virtual resolution is twice the panel size to allow for
|
|
* double-buffering.
|
|
*/
|
|
ovl->format = format;
|
|
ovl->xres = ovl->cfg->max_xres;
|
|
ovl->xres_virtual = ovl->xres;
|
|
ovl->yres = ovl->cfg->max_yres;
|
|
ovl->yres_virtual = ovl->yres * 2;
|
|
|
|
if (!format->yuv)
|
|
ovl->pitch = ovl->xres_virtual * format->bpp / 8;
|
|
else
|
|
ovl->pitch = ovl->xres_virtual;
|
|
|
|
/* Allocate frame buffer memory. */
|
|
ovl->fb_size = ovl->cfg->max_xres * ovl->cfg->max_yres
|
|
* format->bpp / 8 * 2;
|
|
ovl->fb_mem = dma_alloc_coherent(dev, ovl->fb_size, &ovl->dma_handle,
|
|
GFP_KERNEL);
|
|
if (!ovl->fb_mem) {
|
|
dev_err(dev, "unable to allocate buffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = sh_mobile_lcdc_overlay_fb_init(ovl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch)
|
|
{
|
|
const struct sh_mobile_lcdc_format_info *format;
|
|
const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg;
|
|
struct device *dev = ch->lcdc->dev;
|
|
const struct fb_videomode *max_mode;
|
|
const struct fb_videomode *mode;
|
|
unsigned int num_modes;
|
|
unsigned int max_size;
|
|
unsigned int i;
|
|
|
|
/* Validate the format. */
|
|
format = sh_mobile_format_info(cfg->fourcc);
|
|
if (format == NULL) {
|
|
dev_err(dev, "Invalid FOURCC %08x.\n", cfg->fourcc);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Iterate through the modes to validate them and find the highest
|
|
* resolution.
|
|
*/
|
|
max_mode = NULL;
|
|
max_size = 0;
|
|
|
|
for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) {
|
|
unsigned int size = mode->yres * mode->xres;
|
|
|
|
/* NV12/NV21 buffers must have even number of lines */
|
|
if ((cfg->fourcc == V4L2_PIX_FMT_NV12 ||
|
|
cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) {
|
|
dev_err(dev, "yres must be multiple of 2 for "
|
|
"YCbCr420 mode.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (size > max_size) {
|
|
max_mode = mode;
|
|
max_size = size;
|
|
}
|
|
}
|
|
|
|
if (!max_size)
|
|
max_size = MAX_XRES * MAX_YRES;
|
|
else
|
|
dev_dbg(dev, "Found largest videomode %ux%u\n",
|
|
max_mode->xres, max_mode->yres);
|
|
|
|
if (cfg->lcd_modes == NULL) {
|
|
mode = &default_720p;
|
|
num_modes = 1;
|
|
} else {
|
|
mode = cfg->lcd_modes;
|
|
num_modes = cfg->num_modes;
|
|
}
|
|
|
|
/* Use the first mode as default. The default Y virtual resolution is
|
|
* twice the panel size to allow for double-buffering.
|
|
*/
|
|
ch->format = format;
|
|
ch->xres = mode->xres;
|
|
ch->xres_virtual = mode->xres;
|
|
ch->yres = mode->yres;
|
|
ch->yres_virtual = mode->yres * 2;
|
|
|
|
if (!format->yuv) {
|
|
ch->colorspace = V4L2_COLORSPACE_SRGB;
|
|
ch->pitch = ch->xres_virtual * format->bpp / 8;
|
|
} else {
|
|
ch->colorspace = V4L2_COLORSPACE_REC709;
|
|
ch->pitch = ch->xres_virtual;
|
|
}
|
|
|
|
ch->display.width = cfg->panel_cfg.width;
|
|
ch->display.height = cfg->panel_cfg.height;
|
|
ch->display.mode = *mode;
|
|
|
|
/* Allocate frame buffer memory. */
|
|
ch->fb_size = max_size * format->bpp / 8 * 2;
|
|
ch->fb_mem = dma_alloc_coherent(dev, ch->fb_size, &ch->dma_handle,
|
|
GFP_KERNEL);
|
|
if (ch->fb_mem == NULL) {
|
|
dev_err(dev, "unable to allocate buffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Initialize the transmitter device if present. */
|
|
if (cfg->tx_dev) {
|
|
if (!cfg->tx_dev->dev.driver ||
|
|
!try_module_get(cfg->tx_dev->dev.driver->owner)) {
|
|
dev_warn(dev, "unable to get transmitter device\n");
|
|
return -EINVAL;
|
|
}
|
|
ch->tx_dev = platform_get_drvdata(cfg->tx_dev);
|
|
ch->tx_dev->lcdc = ch;
|
|
ch->tx_dev->def_mode = *mode;
|
|
}
|
|
|
|
return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes);
|
|
}
|
|
|
|
static int sh_mobile_lcdc_probe(struct platform_device *pdev)
|
|
{
|
|
struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
|
|
struct sh_mobile_lcdc_priv *priv;
|
|
struct resource *res;
|
|
int num_channels;
|
|
int error;
|
|
int irq, i;
|
|
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev, "no platform data defined\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (!res || irq < 0) {
|
|
dev_err(&pdev->dev, "cannot get platform resources\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->dev = &pdev->dev;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
|
|
mutex_init(&priv->ch[i].open_lock);
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
error = request_irq(irq, sh_mobile_lcdc_irq, 0,
|
|
dev_name(&pdev->dev), priv);
|
|
if (error) {
|
|
dev_err(&pdev->dev, "unable to request irq\n");
|
|
goto err1;
|
|
}
|
|
|
|
priv->irq = irq;
|
|
atomic_set(&priv->hw_usecnt, -1);
|
|
|
|
for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) {
|
|
struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels;
|
|
|
|
ch->lcdc = priv;
|
|
ch->cfg = &pdata->ch[i];
|
|
|
|
error = sh_mobile_lcdc_check_interface(ch);
|
|
if (error) {
|
|
dev_err(&pdev->dev, "unsupported interface type\n");
|
|
goto err1;
|
|
}
|
|
init_waitqueue_head(&ch->frame_end_wait);
|
|
init_completion(&ch->vsync_completion);
|
|
|
|
/* probe the backlight is there is one defined */
|
|
if (ch->cfg->bl_info.max_brightness)
|
|
ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch);
|
|
|
|
switch (pdata->ch[i].chan) {
|
|
case LCDC_CHAN_MAINLCD:
|
|
ch->enabled = LDCNT2R_ME;
|
|
ch->reg_offs = lcdc_offs_mainlcd;
|
|
num_channels++;
|
|
break;
|
|
case LCDC_CHAN_SUBLCD:
|
|
ch->enabled = LDCNT2R_SE;
|
|
ch->reg_offs = lcdc_offs_sublcd;
|
|
num_channels++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!num_channels) {
|
|
dev_err(&pdev->dev, "no channels defined\n");
|
|
error = -EINVAL;
|
|
goto err1;
|
|
}
|
|
|
|
/* for dual channel LCDC (MAIN + SUB) force shared format setting */
|
|
if (num_channels == 2)
|
|
priv->forced_fourcc = pdata->ch[0].fourcc;
|
|
|
|
priv->base = ioremap(res->start, resource_size(res));
|
|
if (!priv->base) {
|
|
error = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source);
|
|
if (error) {
|
|
dev_err(&pdev->dev, "unable to setup clocks\n");
|
|
goto err1;
|
|
}
|
|
|
|
/* Enable runtime PM. */
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
for (i = 0; i < num_channels; i++) {
|
|
struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
|
|
|
|
error = sh_mobile_lcdc_channel_init(ch);
|
|
if (error)
|
|
goto err1;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
|
|
struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
|
|
|
|
ovl->cfg = &pdata->overlays[i];
|
|
ovl->channel = &priv->ch[0];
|
|
|
|
error = sh_mobile_lcdc_overlay_init(ovl);
|
|
if (error)
|
|
goto err1;
|
|
}
|
|
|
|
error = sh_mobile_lcdc_start(priv);
|
|
if (error) {
|
|
dev_err(&pdev->dev, "unable to start hardware\n");
|
|
goto err1;
|
|
}
|
|
|
|
for (i = 0; i < num_channels; i++) {
|
|
struct sh_mobile_lcdc_chan *ch = priv->ch + i;
|
|
|
|
error = sh_mobile_lcdc_channel_fb_register(ch);
|
|
if (error)
|
|
goto err1;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
|
|
struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
|
|
|
|
error = sh_mobile_lcdc_overlay_fb_register(ovl);
|
|
if (error)
|
|
goto err1;
|
|
}
|
|
|
|
return 0;
|
|
err1:
|
|
sh_mobile_lcdc_remove(pdev);
|
|
|
|
return error;
|
|
}
|
|
|
|
static struct platform_driver sh_mobile_lcdc_driver = {
|
|
.driver = {
|
|
.name = "sh_mobile_lcdc_fb",
|
|
.pm = &sh_mobile_lcdc_dev_pm_ops,
|
|
},
|
|
.probe = sh_mobile_lcdc_probe,
|
|
.remove = sh_mobile_lcdc_remove,
|
|
};
|
|
|
|
module_platform_driver(sh_mobile_lcdc_driver);
|
|
|
|
MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver");
|
|
MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
|
|
MODULE_LICENSE("GPL v2");
|