Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* bw2.c: BWTWO frame buffer driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Driver layout based loosely on tgafb.c, see that file for credits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/fb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <asm/fbio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include "sbuslib.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * Local functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static int bw2_blank(int, struct fb_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static int bw2_mmap(struct fb_info *, struct vm_area_struct *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static int bw2_ioctl(struct fb_info *, unsigned int, unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  *  Frame buffer operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static const struct fb_ops bw2_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	.owner			= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	.fb_blank		= bw2_blank,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	.fb_fillrect		= cfb_fillrect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	.fb_copyarea		= cfb_copyarea,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	.fb_imageblit		= cfb_imageblit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	.fb_mmap		= bw2_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	.fb_ioctl		= bw2_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	.fb_compat_ioctl	= sbusfb_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) /* OBio addresses for the bwtwo registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define BWTWO_REGISTER_OFFSET 0x400000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) struct bt_regs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u32 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	u32 color_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	u32 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	u32 cursor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) struct bw2_regs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct bt_regs	cmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	u8	control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	u8	status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	u8	cursor_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u8	cursor_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	u8	h_blank_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	u8	h_blank_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	u8	h_sync_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	u8	h_sync_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	u8	comp_sync_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	u8	v_blank_start_high;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	u8	v_blank_start_low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	u8	v_blank_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	u8	v_sync_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	u8	v_sync_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	u8	xfer_holdoff_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	u8	xfer_holdoff_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) /* Status Register Constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) #define BWTWO_SR_RES_MASK	0x70
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) #define BWTWO_SR_1600_1280	0x50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) #define BWTWO_SR_1152_900_76_A	0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #define BWTWO_SR_1152_900_76_B	0x60
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) #define BWTWO_SR_ID_MASK	0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #define BWTWO_SR_ID_MONO	0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) #define BWTWO_SR_ID_MONO_ECL	0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) #define BWTWO_SR_ID_MSYNC	0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define BWTWO_SR_ID_NOCONN	0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) /* Control Register Constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define BWTWO_CTL_ENABLE_INTS   0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) #define BWTWO_CTL_ENABLE_VIDEO  0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) #define BWTWO_CTL_ENABLE_TIMING 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define BWTWO_CTL_ENABLE_CURCMP 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) #define BWTWO_CTL_XTAL_MASK     0x0C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define BWTWO_CTL_DIVISOR_MASK  0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /* Status Register Constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define BWTWO_STAT_PENDING_INT  0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define BWTWO_STAT_MSENSE_MASK  0x70
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define BWTWO_STAT_ID_MASK      0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct bw2_par {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	spinlock_t		lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	struct bw2_regs		__iomem *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	u32			flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define BW2_FLAG_BLANKED	0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	unsigned long		which_io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)  *      bw2_blank - Optional function.  Blanks the display.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)  *      @blank_mode: the blank mode we want.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  *      @info: frame buffer structure that represents a single frame buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) bw2_blank(int blank, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct bw2_par *par = (struct bw2_par *) info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	struct bw2_regs __iomem *regs = par->regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	spin_lock_irqsave(&par->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	switch (blank) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	case FB_BLANK_UNBLANK: /* Unblanking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		val = sbus_readb(&regs->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		val |= BWTWO_CTL_ENABLE_VIDEO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		sbus_writeb(val, &regs->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		par->flags &= ~BW2_FLAG_BLANKED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	case FB_BLANK_NORMAL: /* Normal blanking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	case FB_BLANK_POWERDOWN: /* Poweroff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		val = sbus_readb(&regs->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		val &= ~BWTWO_CTL_ENABLE_VIDEO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		sbus_writeb(val, &regs->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		par->flags |= BW2_FLAG_BLANKED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	spin_unlock_irqrestore(&par->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static struct sbus_mmap_map bw2_mmap_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		.size = SBUS_MMAP_FBSIZE(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	{ .size = 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int bw2_mmap(struct fb_info *info, struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct bw2_par *par = (struct bw2_par *)info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	return sbusfb_mmap_helper(bw2_mmap_map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 				  info->fix.smem_start, info->fix.smem_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 				  par->which_io,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 				  vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static int bw2_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	return sbusfb_ioctl_helper(cmd, arg, info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 				   FBTYPE_SUN2BW, 1, info->fix.smem_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)  *  Initialisation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static void bw2_init_fix(struct fb_info *info, int linebytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	strlcpy(info->fix.id, "bwtwo", sizeof(info->fix.id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	info->fix.type = FB_TYPE_PACKED_PIXELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	info->fix.visual = FB_VISUAL_MONO01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	info->fix.line_length = linebytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	info->fix.accel = FB_ACCEL_SUN_BWTWO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static u8 bw2regs_1600[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	0x14, 0x8b,	0x15, 0x28,	0x16, 0x03,	0x17, 0x13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	0x18, 0x7b,	0x19, 0x05,	0x1a, 0x34,	0x1b, 0x2e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	0x1c, 0x00,	0x1d, 0x0a,	0x1e, 0xff,	0x1f, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	0x10, 0x21,	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static u8 bw2regs_ecl[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	0x14, 0x65,	0x15, 0x1e,	0x16, 0x04,	0x17, 0x0c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	0x18, 0x5e,	0x19, 0x03,	0x1a, 0xa7,	0x1b, 0x23,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	0x1c, 0x00,	0x1d, 0x08,	0x1e, 0xff,	0x1f, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	0x10, 0x20,	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static u8 bw2regs_analog[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	0x14, 0xbb,	0x15, 0x2b,	0x16, 0x03,	0x17, 0x13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	0x18, 0xb0,	0x19, 0x03,	0x1a, 0xa6,	0x1b, 0x22,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	0x1c, 0x01,	0x1d, 0x05,	0x1e, 0xff,	0x1f, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	0x10, 0x20,	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static u8 bw2regs_76hz[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	0x14, 0xb7,	0x15, 0x27,	0x16, 0x03,	0x17, 0x0f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	0x18, 0xae,	0x19, 0x03,	0x1a, 0xae,	0x1b, 0x2a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	0x1c, 0x01,	0x1d, 0x09,	0x1e, 0xff,	0x1f, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	0x10, 0x24,	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static u8 bw2regs_66hz[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	0x14, 0xbb,	0x15, 0x2b,	0x16, 0x04,	0x17, 0x14,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	0x18, 0xae,	0x19, 0x03,	0x1a, 0xa8,	0x1b, 0x24,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	0x1c, 0x01,	0x1d, 0x05,	0x1e, 0xff,	0x1f, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	0x10, 0x20,	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static int bw2_do_default_mode(struct bw2_par *par, struct fb_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			       int *linebytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	u8 status, mon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	u8 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	status = sbus_readb(&par->regs->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	mon = status & BWTWO_SR_RES_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	switch (status & BWTWO_SR_ID_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	case BWTWO_SR_ID_MONO_ECL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		if (mon == BWTWO_SR_1600_1280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			p = bw2regs_1600;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			info->var.xres = info->var.xres_virtual = 1600;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			info->var.yres = info->var.yres_virtual = 1280;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			*linebytes = 1600 / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			p = bw2regs_ecl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	case BWTWO_SR_ID_MONO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		p = bw2regs_analog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	case BWTWO_SR_ID_MSYNC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		if (mon == BWTWO_SR_1152_900_76_A ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		    mon == BWTWO_SR_1152_900_76_B)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			p = bw2regs_76hz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			p = bw2regs_66hz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	case BWTWO_SR_ID_NOCONN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		printk(KERN_ERR "bw2: can't handle SR %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		       status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	for ( ; *p; p += 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		u8 __iomem *regp = &((u8 __iomem *)par->regs)[p[0]];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		sbus_writeb(p[1], regp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static int bw2_probe(struct platform_device *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	struct device_node *dp = op->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	struct fb_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	struct bw2_par *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	int linebytes, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	info = framebuffer_alloc(sizeof(struct bw2_par), &op->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	spin_lock_init(&par->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	info->fix.smem_start = op->resource[0].start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	par->which_io = op->resource[0].flags & IORESOURCE_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	sbusfb_fill_var(&info->var, dp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	linebytes = of_getintprop_default(dp, "linebytes",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 					  info->var.xres);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	info->var.red.length = info->var.green.length =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		info->var.blue.length = info->var.bits_per_pixel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	info->var.red.offset = info->var.green.offset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		info->var.blue.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	par->regs = of_ioremap(&op->resource[0], BWTWO_REGISTER_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 			       sizeof(struct bw2_regs), "bw2 regs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	if (!par->regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 		goto out_release_fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	if (!of_find_property(dp, "width", NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		err = bw2_do_default_mode(par, info, &linebytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 			goto out_unmap_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	info->flags = FBINFO_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	info->fbops = &bw2_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	info->screen_base = of_ioremap(&op->resource[0], 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 				       info->fix.smem_len, "bw2 ram");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if (!info->screen_base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		goto out_unmap_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	bw2_blank(FB_BLANK_UNBLANK, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	bw2_init_fix(info, linebytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	err = register_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		goto out_unmap_screen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	dev_set_drvdata(&op->dev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	printk(KERN_INFO "%pOF: bwtwo at %lx:%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	       dp, par->which_io, info->fix.smem_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) out_unmap_screen:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	of_iounmap(&op->resource[0], info->screen_base, info->fix.smem_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) out_unmap_regs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	of_iounmap(&op->resource[0], par->regs, sizeof(struct bw2_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) out_release_fb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static int bw2_remove(struct platform_device *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	struct fb_info *info = dev_get_drvdata(&op->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	struct bw2_par *par = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	unregister_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	of_iounmap(&op->resource[0], par->regs, sizeof(struct bw2_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	of_iounmap(&op->resource[0], info->screen_base, info->fix.smem_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) static const struct of_device_id bw2_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		.name = "bwtwo",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) MODULE_DEVICE_TABLE(of, bw2_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static struct platform_driver bw2_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 		.name = "bw2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 		.of_match_table = bw2_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	.probe		= bw2_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	.remove		= bw2_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static int __init bw2_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	if (fb_get_options("bw2fb", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	return platform_driver_register(&bw2_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) static void __exit bw2_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	platform_driver_unregister(&bw2_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) module_init(bw2_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) module_exit(bw2_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) MODULE_DESCRIPTION("framebuffer driver for BWTWO chipsets");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) MODULE_VERSION("2.0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) MODULE_LICENSE("GPL");