^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * WonderMedia WM8505 Frame Buffer device driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010 Ed Spiridonov <edo.rus@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Based on vt8500lcdfb.c
^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/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/fb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/memblock.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/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/of_fdt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <video/of_display_timing.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "wm8505fb_regs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "wmt_ge_rops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define DRIVER_NAME "wm8505-fb"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define to_wm8505fb_info(__info) container_of(__info, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct wm8505fb_info, fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct wm8505fb_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct fb_info fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) void __iomem *regbase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) unsigned int contrast;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int wm8505fb_init_hw(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* I know the purpose only of few registers, so clear unknown */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) for (i = 0; i < 0x200; i += 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) writel(0, fbi->regbase + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Set frame buffer address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) writel(fbi->fb.fix.smem_start, fbi->regbase + WMT_GOVR_FBADDR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) writel(fbi->fb.fix.smem_start, fbi->regbase + WMT_GOVR_FBADDR1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * Set in-memory picture format to RGB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * 0x31C sets the correct color mode (RGB565) for WM8650
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Bit 8+9 (0x300) are ignored on WM8505 as reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) writel(0x31c, fbi->regbase + WMT_GOVR_COLORSPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) writel(1, fbi->regbase + WMT_GOVR_COLORSPACE1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* Virtual buffer size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) writel(info->var.xres, fbi->regbase + WMT_GOVR_XRES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) writel(info->var.xres_virtual, fbi->regbase + WMT_GOVR_XRES_VIRTUAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* black magic ;) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) writel(0xf, fbi->regbase + WMT_GOVR_FHI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) writel(4, fbi->regbase + WMT_GOVR_DVO_SET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) writel(1, fbi->regbase + WMT_GOVR_MIF_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) writel(1, fbi->regbase + WMT_GOVR_REG_UPDATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int wm8505fb_set_timing(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int h_start = info->var.left_margin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int h_end = h_start + info->var.xres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int h_all = h_end + info->var.right_margin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int h_sync = info->var.hsync_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int v_start = info->var.upper_margin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int v_end = v_start + info->var.yres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int v_all = v_end + info->var.lower_margin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int v_sync = info->var.vsync_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) writel(0, fbi->regbase + WMT_GOVR_TG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) writel(h_start, fbi->regbase + WMT_GOVR_TIMING_H_START);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) writel(h_end, fbi->regbase + WMT_GOVR_TIMING_H_END);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) writel(h_all, fbi->regbase + WMT_GOVR_TIMING_H_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) writel(h_sync, fbi->regbase + WMT_GOVR_TIMING_H_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) writel(v_start, fbi->regbase + WMT_GOVR_TIMING_V_START);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) writel(v_end, fbi->regbase + WMT_GOVR_TIMING_V_END);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) writel(v_all, fbi->regbase + WMT_GOVR_TIMING_V_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) writel(v_sync, fbi->regbase + WMT_GOVR_TIMING_V_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) writel(1, fbi->regbase + WMT_GOVR_TG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int wm8505fb_set_par(struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (!fbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (info->var.bits_per_pixel == 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) info->var.red.offset = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) info->var.red.length = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) info->var.red.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) info->var.green.offset = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) info->var.green.length = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) info->var.green.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) info->var.blue.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) info->var.blue.length = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) info->var.blue.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) info->fix.visual = FB_VISUAL_TRUECOLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) info->fix.line_length = info->var.xres_virtual << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) } else if (info->var.bits_per_pixel == 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) info->var.red.offset = 11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) info->var.red.length = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) info->var.red.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) info->var.green.offset = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) info->var.green.length = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) info->var.green.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) info->var.blue.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) info->var.blue.length = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) info->var.blue.msb_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) info->fix.visual = FB_VISUAL_TRUECOLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) info->fix.line_length = info->var.xres_virtual << 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) wm8505fb_set_timing(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) writel(fbi->contrast<<16 | fbi->contrast<<8 | fbi->contrast,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) fbi->regbase + WMT_GOVR_CONTRAST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return 0;
^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) static ssize_t contrast_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct fb_info *info = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return sprintf(buf, "%u\n", fbi->contrast);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static ssize_t contrast_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct fb_info *info = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (kstrtoul(buf, 10, &tmp) || (tmp > 0xff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) fbi->contrast = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) wm8505fb_set_par(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static DEVICE_ATTR_RW(contrast);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static struct attribute *wm8505fb_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) &dev_attr_contrast.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ATTRIBUTE_GROUPS(wm8505fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) chan &= 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) chan >>= 16 - bf->length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return chan << bf->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static int wm8505fb_setcolreg(unsigned regno, unsigned red, unsigned green,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) unsigned blue, unsigned transp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct fb_info *info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (regno >= 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (info->var.grayscale)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) red = green = blue =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) (19595 * red + 38470 * green + 7471 * blue) >> 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) switch (fbi->fb.fix.visual) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) case FB_VISUAL_TRUECOLOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (regno < 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) u32 *pal = info->pseudo_palette;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) val = chan_to_field(red, &fbi->fb.var.red);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) val |= chan_to_field(green, &fbi->fb.var.green);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) val |= chan_to_field(blue, &fbi->fb.var.blue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) pal[regno] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return ret;
^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 int wm8505fb_pan_display(struct fb_var_screeninfo *var,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) writel(var->xoffset, fbi->regbase + WMT_GOVR_XPAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) writel(var->yoffset, fbi->regbase + WMT_GOVR_YPAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int wm8505fb_blank(int blank, struct fb_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct wm8505fb_info *fbi = to_wm8505fb_info(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) switch (blank) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) case FB_BLANK_UNBLANK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) wm8505fb_set_timing(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) writel(0, fbi->regbase + WMT_GOVR_TIMING_V_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static const struct fb_ops wm8505fb_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .fb_set_par = wm8505fb_set_par,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) .fb_setcolreg = wm8505fb_setcolreg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) .fb_fillrect = wmt_ge_fillrect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) .fb_copyarea = wmt_ge_copyarea,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) .fb_imageblit = sys_imageblit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .fb_sync = wmt_ge_sync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .fb_pan_display = wm8505fb_pan_display,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .fb_blank = wm8505fb_blank,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static int wm8505fb_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct wm8505fb_info *fbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct display_timings *disp_timing;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct fb_videomode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) u32 bpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) dma_addr_t fb_mem_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) unsigned long fb_mem_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) void *fb_mem_virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) fbi = devm_kzalloc(&pdev->dev, sizeof(struct wm8505fb_info) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) sizeof(u32) * 16, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (!fbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) strcpy(fbi->fb.fix.id, DRIVER_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) fbi->fb.fix.xpanstep = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) fbi->fb.fix.ypanstep = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) fbi->fb.fix.ywrapstep = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) fbi->fb.fix.accel = FB_ACCEL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) fbi->fb.fbops = &wm8505fb_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) fbi->fb.flags = FBINFO_DEFAULT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) | FBINFO_HWACCEL_COPYAREA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) | FBINFO_HWACCEL_FILLRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) | FBINFO_HWACCEL_XPAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) | FBINFO_HWACCEL_YPAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) | FBINFO_VIRTFB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) | FBINFO_PARTIAL_PAN_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) fbi->fb.node = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) addr = fbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) addr = addr + sizeof(struct wm8505fb_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) fbi->fb.pseudo_palette = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) fbi->regbase = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (IS_ERR(fbi->regbase))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return PTR_ERR(fbi->regbase);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) disp_timing = of_get_display_timings(pdev->dev.of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!disp_timing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ret = of_get_fb_videomode(pdev->dev.of_node, &mode, OF_USE_NATIVE_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) ret = of_property_read_u32(pdev->dev.of_node, "bits-per-pixel", &bpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) fb_videomode_to_var(&fbi->fb.var, &mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) fbi->fb.var.nonstd = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) fbi->fb.var.activate = FB_ACTIVATE_NOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) fbi->fb.var.height = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) fbi->fb.var.width = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /* try allocating the framebuffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) fb_mem_len = mode.xres * mode.yres * 2 * (bpp / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) fb_mem_virt = dmam_alloc_coherent(&pdev->dev, fb_mem_len, &fb_mem_phys,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (!fb_mem_virt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) pr_err("%s: Failed to allocate framebuffer\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) fbi->fb.var.xres_virtual = mode.xres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) fbi->fb.var.yres_virtual = mode.yres * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) fbi->fb.var.bits_per_pixel = bpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) fbi->fb.fix.smem_start = fb_mem_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) fbi->fb.fix.smem_len = fb_mem_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) fbi->fb.screen_buffer = fb_mem_virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) fbi->fb.screen_size = fb_mem_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) fbi->contrast = 0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) ret = wm8505fb_set_par(&fbi->fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) dev_err(&pdev->dev, "Failed to set parameters\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (fb_alloc_cmap(&fbi->fb.cmap, 256, 0) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) dev_err(&pdev->dev, "Failed to allocate color map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) wm8505fb_init_hw(&fbi->fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) platform_set_drvdata(pdev, fbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ret = register_framebuffer(&fbi->fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) "Failed to register framebuffer device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (fbi->fb.cmap.len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) fb_dealloc_cmap(&fbi->fb.cmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return ret;
^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) fb_info(&fbi->fb, "%s frame buffer at 0x%lx-0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) fbi->fb.fix.id, fbi->fb.fix.smem_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) fbi->fb.fix.smem_start + fbi->fb.fix.smem_len - 1);
^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 int wm8505fb_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct wm8505fb_info *fbi = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) unregister_framebuffer(&fbi->fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) writel(0, fbi->regbase);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (fbi->fb.cmap.len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) fb_dealloc_cmap(&fbi->fb.cmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) static const struct of_device_id wmt_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) { .compatible = "wm,wm8505-fb", },
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static struct platform_driver wm8505fb_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) .probe = wm8505fb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) .remove = wm8505fb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) .name = DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) .of_match_table = wmt_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) .dev_groups = wm8505fb_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) module_platform_driver(wm8505fb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) MODULE_AUTHOR("Ed Spiridonov <edo.rus@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) MODULE_DESCRIPTION("Framebuffer driver for WMT WM8505");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) MODULE_DEVICE_TABLE(of, wmt_dt_ids);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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