arch/arm/mach-netx/nxeb500hmi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arm/mach-netx/nxeb500hmi.c
   4  *
   5  * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
   6  */
   7
   8 #include <linux/dma-mapping.h>
   9 #include <linux/init.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/mtd/plat-ram.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/amba/bus.h>
  14 #include <linux/amba/clcd.h>
  15
  16 #include <mach/hardware.h>
  17 #include <asm/mach-types.h>
  18 #include <asm/mach/arch.h>
  19 #include <mach/netx-regs.h>
  20 #include <linux/platform_data/eth-netx.h>
  21
  22 #include "generic.h"
  23 #include "fb.h"
  24
  25 static struct clcd_panel qvga = {
  26         .mode           = {
  27                 .name           = "QVGA",
  28                 .refresh        = 60,
  29                 .xres           = 240,
  30                 .yres           = 320,
  31                 .pixclock       = 187617,
  32                 .left_margin    = 6,
  33                 .right_margin   = 26,
  34                 .upper_margin   = 0,
  35                 .lower_margin   = 6,
  36                 .hsync_len      = 6,
  37                 .vsync_len      = 1,
  38                 .sync           = 0,
  39                 .vmode          = FB_VMODE_NONINTERLACED,
  40         },
  41         .width          = -1,
  42         .height         = -1,
  43         .tim2           =  16,
  44         .cntl           = CNTL_LCDTFT | CNTL_BGR,
  45         .bpp            = 16,
  46         .grayscale      = 0,
  47 };
  48
  49 static inline int nxeb500hmi_check(struct clcd_fb *fb, struct fb_var_screeninfo *var)
  50 {
  51         var->green.length = 5;
  52         var->green.msb_right = 0;
  53
  54         return clcdfb_check(fb, var);
  55 }
  56
  57 static int nxeb500hmi_clcd_setup(struct clcd_fb *fb)
  58 {
  59         unsigned int val;
  60
  61         fb->fb.var.green.length = 5;
  62         fb->fb.var.green.msb_right = 0;
  63
  64         /* enable asic control */
  65         val = readl(NETX_SYSTEM_IOC_ACCESS_KEY);
  66         writel(val, NETX_SYSTEM_IOC_ACCESS_KEY);
  67
  68         writel(3, NETX_SYSTEM_IOC_CR);
  69
  70         /* GPIO 14 is used for display enable on newer boards */
  71         writel(9, NETX_GPIO_CFG(14));
  72
  73         val = readl(NETX_PIO_OUTPIO);
  74         writel(val | 1, NETX_PIO_OUTPIO);
  75
  76         val = readl(NETX_PIO_OEPIO);
  77         writel(val | 1, NETX_PIO_OEPIO);
  78         return netx_clcd_setup(fb);
  79 }
  80
  81 static struct clcd_board clcd_data = {
  82         .name           = "netX",
  83         .check          = nxeb500hmi_check,
  84         .decode         = clcdfb_decode,
  85         .enable         = netx_clcd_enable,
  86         .setup          = nxeb500hmi_clcd_setup,
  87         .mmap           = netx_clcd_mmap,
  88         .remove         = netx_clcd_remove,
  89 };
  90
  91 static struct netxeth_platform_data eth0_platform_data = {
  92         .xcno = 0,
  93 };
  94
  95 static struct platform_device netx_eth0_device = {
  96         .name           = "netx-eth",
  97         .id             = 0,
  98         .num_resources  = 0,
  99         .resource       = NULL,
 100         .dev = {
 101                 .platform_data = &eth0_platform_data,
 102         }
 103 };
 104
 105 static struct netxeth_platform_data eth1_platform_data = {
 106         .xcno = 1,
 107 };
 108
 109 static struct platform_device netx_eth1_device = {
 110         .name           = "netx-eth",
 111         .id             = 1,
 112         .num_resources  = 0,
 113         .resource       = NULL,
 114         .dev = {
 115                 .platform_data = &eth1_platform_data,
 116         }
 117 };
 118
 119 static struct resource netx_cf_resources[] = {
 120         [0] = {
 121                 .start  = 0x20000000,
 122                 .end    = 0x25ffffff,
 123                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 124         },
 125 };
 126
 127 static struct platform_device netx_cf_device = {
 128         .name           = "netx-cf",
 129         .id             = 0,
 130         .resource       = netx_cf_resources,
 131         .num_resources  = ARRAY_SIZE(netx_cf_resources),
 132 };
 133
 134 static struct resource netx_uart0_resources[] = {
 135         [0] = {
 136                 .start  = 0x00100A00,
 137                 .end    = 0x00100A3F,
 138                 .flags  = IORESOURCE_MEM,
 139         },
 140         [1] = {
 141                 .start  = (NETX_IRQ_UART0),
 142                 .end    = (NETX_IRQ_UART0),
 143                 .flags  = IORESOURCE_IRQ,
 144         },
 145 };
 146
 147 static struct platform_device netx_uart0_device = {
 148         .name           = "netx-uart",
 149         .id             = 0,
 150         .num_resources  = ARRAY_SIZE(netx_uart0_resources),
 151         .resource       = netx_uart0_resources,
 152 };
 153
 154 static struct platform_device *devices[] __initdata = {
 155         &netx_eth0_device,
 156         &netx_eth1_device,
 157         &netx_cf_device,
 158         &netx_uart0_device,
 159 };
 160
 161 static void __init nxeb500hmi_init(void)
 162 {
 163         netx_fb_init(&clcd_data, &qvga);
 164         platform_add_devices(devices, ARRAY_SIZE(devices));
 165 }
 166
 167 MACHINE_START(NXEB500HMI, "Hilscher nxeb500hmi")
 168         .atag_offset    = 0x100,
 169         .map_io         = netx_map_io,
 170         .init_irq       = netx_init_irq,
 171         .init_time      = netx_timer_init,
 172         .init_machine   = nxeb500hmi_init,
 173         .restart        = netx_restart,
 174 MACHINE_END