mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-14 01:46:46 +07:00
9851ca5774
This patch adds support for the TI-Nspire platform. Changes between v1 and v2: * Added GENERIC_IRQ_CHIP to platform Kconfig Signed-off-by: Daniel Tang <dt.tangr@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
|
|
* linux/arch/arm/mach-nspire/clcd.c
|
|
*
|
|
* Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/of.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/amba/clcd.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
static struct clcd_panel nspire_cx_lcd_panel = {
|
|
.mode = {
|
|
.name = "Color LCD",
|
|
.refresh = 60,
|
|
.xres = 320,
|
|
.yres = 240,
|
|
.sync = 0,
|
|
.vmode = FB_VMODE_NONINTERLACED,
|
|
.pixclock = 1,
|
|
.hsync_len = 6,
|
|
.vsync_len = 1,
|
|
.right_margin = 50,
|
|
.left_margin = 38,
|
|
.lower_margin = 3,
|
|
.upper_margin = 17,
|
|
},
|
|
.width = 65, /* ~6.50 cm */
|
|
.height = 49, /* ~4.87 cm */
|
|
.tim2 = TIM2_IPC,
|
|
.cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
|
|
.bpp = 16,
|
|
.caps = CLCD_CAP_565,
|
|
};
|
|
|
|
static struct clcd_panel nspire_classic_lcd_panel = {
|
|
.mode = {
|
|
.name = "Grayscale LCD",
|
|
.refresh = 60,
|
|
.xres = 320,
|
|
.yres = 240,
|
|
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
|
|
.vmode = FB_VMODE_NONINTERLACED,
|
|
.pixclock = 1,
|
|
.hsync_len = 6,
|
|
.vsync_len = 1,
|
|
.right_margin = 6,
|
|
.left_margin = 6,
|
|
},
|
|
.width = 71, /* 7.11cm */
|
|
.height = 53, /* 5.33cm */
|
|
.tim2 = 0x80007d0,
|
|
.cntl = CNTL_LCDMONO8,
|
|
.bpp = 8,
|
|
.grayscale = 1,
|
|
.caps = CLCD_CAP_5551,
|
|
};
|
|
|
|
int nspire_clcd_setup(struct clcd_fb *fb)
|
|
{
|
|
struct clcd_panel *panel;
|
|
size_t panel_size;
|
|
const char *type;
|
|
dma_addr_t dma;
|
|
int err;
|
|
|
|
BUG_ON(!fb->dev->dev.of_node);
|
|
|
|
err = of_property_read_string(fb->dev->dev.of_node, "lcd-type", &type);
|
|
if (err) {
|
|
pr_err("CLCD: Could not find lcd-type property\n");
|
|
return err;
|
|
}
|
|
|
|
if (!strcmp(type, "cx")) {
|
|
panel = &nspire_cx_lcd_panel;
|
|
} else if (!strcmp(type, "classic")) {
|
|
panel = &nspire_classic_lcd_panel;
|
|
} else {
|
|
pr_err("CLCD: Unknown lcd-type %s\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
panel_size = ((panel->mode.xres * panel->mode.yres) * panel->bpp) / 8;
|
|
panel_size = ALIGN(panel_size, PAGE_SIZE);
|
|
|
|
fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev,
|
|
panel_size, &dma, GFP_KERNEL);
|
|
|
|
if (!fb->fb.screen_base) {
|
|
pr_err("CLCD: unable to map framebuffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fb->fb.fix.smem_start = dma;
|
|
fb->fb.fix.smem_len = panel_size;
|
|
fb->panel = panel;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
|
|
{
|
|
return dma_mmap_writecombine(&fb->dev->dev, vma,
|
|
fb->fb.screen_base, fb->fb.fix.smem_start,
|
|
fb->fb.fix.smem_len);
|
|
}
|
|
|
|
void nspire_clcd_remove(struct clcd_fb *fb)
|
|
{
|
|
dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
|
|
fb->fb.screen_base, fb->fb.fix.smem_start);
|
|
}
|