Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Cirrus Logic CLPS711X FB driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Based on driver by Russell King <rmk@arm.linux.org.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/fb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/lcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/mfd/syscon/clps711x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <video/of_display_timing.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define CLPS711X_FB_NAME	"clps711x-fb"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define CLPS711X_FB_BPP_MAX	(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /* Registers relative to LCDCON */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define CLPS711X_LCDCON		(0x0000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) # define LCDCON_GSEN		BIT(30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) # define LCDCON_GSMD		BIT(31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define CLPS711X_PALLSW		(0x0280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define CLPS711X_PALMSW		(0x02c0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define CLPS711X_FBADDR		(0x0d40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) struct clps711x_fb_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct clk		*clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	void __iomem		*base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct regmap		*syscon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	resource_size_t		buffsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct fb_videomode	mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct regulator	*lcd_pwr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	u32			ac_prescale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	bool			cmap_invert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) static int clps711x_fb_setcolreg(u_int regno, u_int red, u_int green,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 				 u_int blue, u_int transp, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct clps711x_fb_info *cfb = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	u32 level, mask, shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	if (regno >= BIT(info->var.bits_per_pixel))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	shift = 4 * (regno & 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	mask  = 0xf << shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	/* gray = 0.30*R + 0.58*G + 0.11*B */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	level = (((red * 77 + green * 151 + blue * 28) >> 20) << shift) & mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	if (cfb->cmap_invert)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		level = 0xf - level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	regno = (regno < 8) ? CLPS711X_PALLSW : CLPS711X_PALMSW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	writel((readl(cfb->base + regno) & ~mask) | level, cfb->base + regno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static int clps711x_fb_check_var(struct fb_var_screeninfo *var,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 				 struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (var->bits_per_pixel < 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	    var->bits_per_pixel > CLPS711X_FB_BPP_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (!var->pixclock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	val = DIV_ROUND_UP(var->xres, 16) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (val < 0x01 || val > 0x3f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	val = DIV_ROUND_UP(var->yres * var->xres * var->bits_per_pixel, 128);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	val--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	if (val < 0x001 || val > 0x1fff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	var->transp.msb_right	= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	var->transp.offset	= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	var->transp.length	= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	var->red.msb_right	= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	var->red.offset		= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	var->red.length		= var->bits_per_pixel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	var->green		= var->red;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	var->blue		= var->red;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	var->grayscale		= var->bits_per_pixel > 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static int clps711x_fb_set_par(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct clps711x_fb_info *cfb = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	resource_size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	u32 lcdcon, pps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	size = (info->var.xres * info->var.yres * info->var.bits_per_pixel) / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (size > cfb->buffsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	switch (info->var.bits_per_pixel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		info->fix.visual = FB_VISUAL_MONO01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	info->fix.line_length = info->var.xres * info->var.bits_per_pixel / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	info->fix.smem_len = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	lcdcon = (info->var.xres * info->var.yres *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		  info->var.bits_per_pixel) / 128 - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	lcdcon |= ((info->var.xres / 16) - 1) << 13;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	lcdcon |= (cfb->ac_prescale & 0x1f) << 25;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	pps = clk_get_rate(cfb->clk) / (PICOS2KHZ(info->var.pixclock) * 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (pps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		pps--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	lcdcon |= (pps & 0x3f) << 19;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (info->var.bits_per_pixel == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		lcdcon |= LCDCON_GSMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (info->var.bits_per_pixel >= 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		lcdcon |= LCDCON_GSEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	/* LCDCON must only be changed while the LCD is disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	writel(lcdcon, cfb->base + CLPS711X_LCDCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	regmap_update_bits(cfb->syscon, SYSCON_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			   SYSCON1_LCDEN, SYSCON1_LCDEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int clps711x_fb_blank(int blank, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	/* Return happy */
^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 const struct fb_ops clps711x_fb_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	.owner		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	.fb_setcolreg	= clps711x_fb_setcolreg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	.fb_check_var	= clps711x_fb_check_var,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	.fb_set_par	= clps711x_fb_set_par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	.fb_blank	= clps711x_fb_blank,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	.fb_fillrect	= sys_fillrect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	.fb_copyarea	= sys_copyarea,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	.fb_imageblit	= sys_imageblit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int clps711x_lcd_check_fb(struct lcd_device *lcddev, struct fb_info *fi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	return (!fi || fi->par == cfb) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static int clps711x_lcd_get_power(struct lcd_device *lcddev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (!IS_ERR_OR_NULL(cfb->lcd_pwr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		if (!regulator_is_enabled(cfb->lcd_pwr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			return FB_BLANK_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return FB_BLANK_UNBLANK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int clps711x_lcd_set_power(struct lcd_device *lcddev, int blank)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (!IS_ERR_OR_NULL(cfb->lcd_pwr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		if (blank == FB_BLANK_UNBLANK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 			if (!regulator_is_enabled(cfb->lcd_pwr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 				return regulator_enable(cfb->lcd_pwr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			if (regulator_is_enabled(cfb->lcd_pwr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 				return regulator_disable(cfb->lcd_pwr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	return 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 struct lcd_ops clps711x_lcd_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	.check_fb	= clps711x_lcd_check_fb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	.get_power	= clps711x_lcd_get_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	.set_power	= clps711x_lcd_set_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int clps711x_fb_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct device_node *disp, *np = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct clps711x_fb_info *cfb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct lcd_device *lcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	struct fb_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	int ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (fb_get_options(CLPS711X_FB_NAME, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	info = framebuffer_alloc(sizeof(*cfb), dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	cfb = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	platform_set_drvdata(pdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	cfb->base = devm_ioremap(dev, res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	if (!cfb->base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	info->fix.mmio_start = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	info->fix.mmio_len = resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	info->screen_base = devm_ioremap_resource(dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	if (IS_ERR(info->screen_base)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		ret = PTR_ERR(info->screen_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	/* Physical address should be aligned to 256 MiB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (res->start & 0x0fffffff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	info->apertures = alloc_apertures(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	if (!info->apertures) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	cfb->buffsize = resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	info->fix.smem_start = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	info->apertures->ranges[0].base = info->fix.smem_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	info->apertures->ranges[0].size = cfb->buffsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	cfb->clk = devm_clk_get(dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (IS_ERR(cfb->clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		ret = PTR_ERR(cfb->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	cfb->syscon =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		syscon_regmap_lookup_by_compatible("cirrus,ep7209-syscon1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	if (IS_ERR(cfb->syscon)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		ret = PTR_ERR(cfb->syscon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	disp = of_parse_phandle(np, "display", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	if (!disp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		dev_err(&pdev->dev, "No display defined\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		ret = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	ret = of_get_fb_videomode(disp, &cfb->mode, OF_USE_NATIVE_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		of_node_put(disp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	of_property_read_u32(disp, "ac-prescale", &cfb->ac_prescale);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	cfb->cmap_invert = of_property_read_bool(disp, "cmap-invert");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	ret = of_property_read_u32(disp, "bits-per-pixel",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 				   &info->var.bits_per_pixel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	of_node_put(disp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	/* Force disable LCD on any mismatch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (info->fix.smem_start != (readb(cfb->base + CLPS711X_FBADDR) << 28))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		regmap_update_bits(cfb->syscon, SYSCON_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 				   SYSCON1_LCDEN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	ret = regmap_read(cfb->syscon, SYSCON_OFFSET, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	if (!(val & SYSCON1_LCDEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		/* Setup start FB address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		writeb(info->fix.smem_start >> 28, cfb->base + CLPS711X_FBADDR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		/* Clean FB memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		memset_io(info->screen_base, 0, cfb->buffsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	cfb->lcd_pwr = devm_regulator_get(dev, "lcd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	if (PTR_ERR(cfb->lcd_pwr) == -EPROBE_DEFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		ret = -EPROBE_DEFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	info->fbops = &clps711x_fb_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	info->flags = FBINFO_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	info->var.activate = FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	info->var.height = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	info->var.width = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	info->var.vmode = FB_VMODE_NONINTERLACED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	info->fix.type = FB_TYPE_PACKED_PIXELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	info->fix.accel = FB_ACCEL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	strlcpy(info->fix.id, CLPS711X_FB_NAME, sizeof(info->fix.id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	fb_videomode_to_var(&info->var, &cfb->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	ret = fb_alloc_cmap(&info->cmap, BIT(CLPS711X_FB_BPP_MAX), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		goto out_fb_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	ret = fb_set_var(info, &info->var);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		goto out_fb_dealloc_cmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	ret = register_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		goto out_fb_dealloc_cmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	lcd = devm_lcd_device_register(dev, "clps711x-lcd", dev, cfb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 				       &clps711x_lcd_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	if (!IS_ERR(lcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	ret = PTR_ERR(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	unregister_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) out_fb_dealloc_cmap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	fb_dealloc_cmap(&info->cmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) out_fb_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int clps711x_fb_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	struct fb_info *info = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	struct clps711x_fb_info *cfb = info->par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	unregister_framebuffer(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	fb_dealloc_cmap(&info->cmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	framebuffer_release(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static const struct of_device_id clps711x_fb_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	{ .compatible = "cirrus,ep7209-fb", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) MODULE_DEVICE_TABLE(of, clps711x_fb_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static struct platform_driver clps711x_fb_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 		.name		= CLPS711X_FB_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		.of_match_table	= clps711x_fb_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	.probe	= clps711x_fb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	.remove	= clps711x_fb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) module_platform_driver(clps711x_fb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) MODULE_DESCRIPTION("Cirrus Logic CLPS711X FB driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) MODULE_LICENSE("GPL");