diff options
Diffstat (limited to 'arch/arm/mach-versatile/versatile_dt.c')
| -rw-r--r-- | arch/arm/mach-versatile/versatile_dt.c | 179 |
1 files changed, 6 insertions, 173 deletions
diff --git a/arch/arm/mach-versatile/versatile_dt.c b/arch/arm/mach-versatile/versatile_dt.c index e9d60687e416..c00ea4f77af6 100644 --- a/arch/arm/mach-versatile/versatile_dt.c +++ b/arch/arm/mach-versatile/versatile_dt.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Versatile board support using the device tree * @@ -5,20 +6,6 @@ * Copyright (C) 2009 Jeremy Kerr <jeremy.kerr@canonical.com> * Copyright (C) 2004 ARM Limited * Copyright (C) 2000 Deep Blue Solutions Ltd - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/init.h> @@ -29,8 +16,6 @@ #include <linux/of_platform.h> #include <linux/slab.h> #include <linux/amba/bus.h> -#include <linux/amba/clcd.h> -#include <linux/platform_data/video-clcd-versatile.h> #include <linux/amba/mmci.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -47,14 +32,12 @@ */ #define VERSATILE_SYS_PCICTL_OFFSET 0x44 #define VERSATILE_SYS_MCI_OFFSET 0x48 -#define VERSATILE_SYS_CLCD_OFFSET 0x50 /* * VERSATILE peripheral addresses */ #define VERSATILE_MMCI0_BASE 0x10005000 /* MMC interface */ #define VERSATILE_MMCI1_BASE 0x1000B000 /* MMC Interface */ -#define VERSATILE_CLCD_BASE 0x10120000 /* CLCD */ #define VERSATILE_SCTL_BASE 0x101E0000 /* System controller */ #define VERSATILE_IB2_BASE 0x24000000 /* IB2 module */ #define VERSATILE_IB2_CTL_BASE (VERSATILE_IB2_BASE + 0x03000000) @@ -97,158 +80,6 @@ static struct mmci_platform_data mmc1_plat_data = { }; /* - * CLCD support. - */ -#define SYS_CLCD_MODE_MASK (3 << 0) -#define SYS_CLCD_MODE_888 (0 << 0) -#define SYS_CLCD_MODE_5551 (1 << 0) -#define SYS_CLCD_MODE_565_RLSB (2 << 0) -#define SYS_CLCD_MODE_565_BLSB (3 << 0) -#define SYS_CLCD_NLCDIOON (1 << 2) -#define SYS_CLCD_VDDPOSSWITCH (1 << 3) -#define SYS_CLCD_PWR3V5SWITCH (1 << 4) -#define SYS_CLCD_ID_MASK (0x1f << 8) -#define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8) -#define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8) -#define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8) -#define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8) -#define SYS_CLCD_ID_VGA (0x1f << 8) - -static bool is_sanyo_2_5_lcd; - -/* - * Disable all display connectors on the interface module. - */ -static void versatile_clcd_disable(struct clcd_fb *fb) -{ - void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET; - u32 val; - - val = readl(sys_clcd); - val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; - writel(val, sys_clcd); - - /* - * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off - */ - if (of_machine_is_compatible("arm,versatile-ab") && is_sanyo_2_5_lcd) { - unsigned long ctrl; - - ctrl = readl(versatile_ib2_ctrl); - ctrl &= ~0x01; - writel(ctrl, versatile_ib2_ctrl); - } -} - -/* - * Enable the relevant connector on the interface module. - */ -static void versatile_clcd_enable(struct clcd_fb *fb) -{ - struct fb_var_screeninfo *var = &fb->fb.var; - void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET; - u32 val; - - val = readl(sys_clcd); - val &= ~SYS_CLCD_MODE_MASK; - - switch (var->green.length) { - case 5: - val |= SYS_CLCD_MODE_5551; - break; - case 6: - if (var->red.offset == 0) - val |= SYS_CLCD_MODE_565_RLSB; - else - val |= SYS_CLCD_MODE_565_BLSB; - break; - case 8: - val |= SYS_CLCD_MODE_888; - break; - } - - /* - * Set the MUX - */ - writel(val, sys_clcd); - - /* - * And now enable the PSUs - */ - val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; - writel(val, sys_clcd); - - /* - * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on - */ - if (of_machine_is_compatible("arm,versatile-ab") && is_sanyo_2_5_lcd) { - unsigned long ctrl; - - ctrl = readl(versatile_ib2_ctrl); - ctrl |= 0x01; - writel(ctrl, versatile_ib2_ctrl); - } -} - -/* - * Detect which LCD panel is connected, and return the appropriate - * clcd_panel structure. Note: we do not have any information on - * the required timings for the 8.4in panel, so we presently assume - * VGA timings. - */ -static int versatile_clcd_setup(struct clcd_fb *fb) -{ - void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET; - const char *panel_name; - u32 val; - - is_sanyo_2_5_lcd = false; - - val = readl(sys_clcd) & SYS_CLCD_ID_MASK; - if (val == SYS_CLCD_ID_SANYO_3_8) - panel_name = "Sanyo TM38QV67A02A"; - else if (val == SYS_CLCD_ID_SANYO_2_5) { - panel_name = "Sanyo QVGA Portrait"; - is_sanyo_2_5_lcd = true; - } else if (val == SYS_CLCD_ID_EPSON_2_2) - panel_name = "Epson L2F50113T00"; - else if (val == SYS_CLCD_ID_VGA) - panel_name = "VGA"; - else { - printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n", - val); - panel_name = "VGA"; - } - - fb->panel = versatile_clcd_get_panel(panel_name); - if (!fb->panel) - return -EINVAL; - - return versatile_clcd_setup_dma(fb, SZ_1M); -} - -static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs) -{ - clcdfb_decode(fb, regs); - - /* Always clear BGR for RGB565: we do the routing externally */ - if (fb->fb.var.green.length == 6) - regs->cntl &= ~CNTL_BGR; -} - -static struct clcd_board clcd_plat_data = { - .name = "Versatile", - .caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888, - .check = clcdfb_check, - .decode = versatile_clcd_decode, - .disable = versatile_clcd_disable, - .enable = versatile_clcd_enable, - .setup = versatile_clcd_setup, - .mmap = versatile_clcd_mmap_dma, - .remove = versatile_clcd_remove_dma, -}; - -/* * Lookup table for attaching a specific name and platform_data pointer to * devices as they get created by of_platform_populate(). Ideally this table * would not exist, but the current clock implementation depends on some devices @@ -257,7 +88,6 @@ static struct clcd_board clcd_plat_data = { struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data), OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", &mmc1_plat_data), - OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data), {} }; @@ -312,12 +142,12 @@ static void __init versatile_dt_pci_init(void) * driver had it so we will keep it. */ writel(1, versatile_sys_base + VERSATILE_SYS_PCICTL_OFFSET); - return; + goto out_put_node; } newprop = kzalloc(sizeof(*newprop), GFP_KERNEL); if (!newprop) - return; + goto out_put_node; newprop->name = kstrdup("status", GFP_KERNEL); newprop->value = kstrdup("disabled", GFP_KERNEL); @@ -325,6 +155,9 @@ static void __init versatile_dt_pci_init(void) of_update_property(np, newprop); pr_info("Not plugged into PCI backplane!\n"); + +out_put_node: + of_node_put(np); } static void __init versatile_dt_init(void) |