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   1 /*
   2  *  linux/arch/arm/mach-pxa/littleton.c
   3  *
   4  *  Support for the Marvell Littleton Development Platform.
   5  *
   6  *  Author:     Jason Chagas (largely modified code)
   7  *  Created:    Nov 20, 2006
   8  *  Copyright:  (C) Copyright 2006 Marvell International Ltd.
   9  *
  10  *  2007-11-22  modified to align with latest kernel
  11  *              eric miao <eric.miao@marvell.com>
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License version 2 as
  15  *  publishhed by the Free Software Foundation.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/delay.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/clk.h>
  23
  24 #include <asm/types.h>
  25 #include <asm/setup.h>
  26 #include <asm/memory.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware.h>
  29 #include <asm/irq.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/irq.h>
  34
  35 #include <asm/arch/pxa-regs.h>
  36 #include <asm/arch/mfp-pxa300.h>
  37 #include <asm/arch/gpio.h>
  38 #include <asm/arch/pxafb.h>
  39 #include <asm/arch/ssp.h>
  40 #include <asm/arch/littleton.h>
  41
  42 #include "generic.h"
  43
  44 #define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
  45
  46 /* Littleton MFP configurations */
  47 static mfp_cfg_t littleton_mfp_cfg[] __initdata = {
  48         /* LCD */
  49         GPIO54_LCD_LDD_0,
  50         GPIO55_LCD_LDD_1,
  51         GPIO56_LCD_LDD_2,
  52         GPIO57_LCD_LDD_3,
  53         GPIO58_LCD_LDD_4,
  54         GPIO59_LCD_LDD_5,
  55         GPIO60_LCD_LDD_6,
  56         GPIO61_LCD_LDD_7,
  57         GPIO62_LCD_LDD_8,
  58         GPIO63_LCD_LDD_9,
  59         GPIO64_LCD_LDD_10,
  60         GPIO65_LCD_LDD_11,
  61         GPIO66_LCD_LDD_12,
  62         GPIO67_LCD_LDD_13,
  63         GPIO68_LCD_LDD_14,
  64         GPIO69_LCD_LDD_15,
  65         GPIO70_LCD_LDD_16,
  66         GPIO71_LCD_LDD_17,
  67         GPIO72_LCD_FCLK,
  68         GPIO73_LCD_LCLK,
  69         GPIO74_LCD_PCLK,
  70         GPIO75_LCD_BIAS,
  71
  72         /* SSP2 */
  73         GPIO25_SSP2_SCLK,
  74         GPIO17_SSP2_FRM,
  75         GPIO27_SSP2_TXD,
  76
  77         /* Debug Ethernet */
  78         GPIO90_GPIO,
  79 };
  80
  81 static struct resource smc91x_resources[] = {
  82         [0] = {
  83                 .start  = (LITTLETON_ETH_PHYS + 0x300),
  84                 .end    = (LITTLETON_ETH_PHYS + 0xfffff),
  85                 .flags  = IORESOURCE_MEM,
  86         },
  87         [1] = {
  88                 .start  = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO90)),
  89                 .end    = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO90)),
  90                 .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
  91         }
  92 };
  93
  94 static struct platform_device smc91x_device = {
  95         .name           = "smc91x",
  96         .id             = 0,
  97         .num_resources  = ARRAY_SIZE(smc91x_resources),
  98         .resource       = smc91x_resources,
  99 };
 100
 101 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULES)
 102 /* use bit 30, 31 as the indicator of command parameter number */
 103 #define CMD0(x)         ((0x00000000) | ((x) << 9))
 104 #define CMD1(x, x1)     ((0x40000000) | ((x) << 9) | 0x100 | (x1))
 105 #define CMD2(x, x1, x2) ((0x80000000) | ((x) << 18) | 0x20000 |\
 106                          ((x1) << 9) | 0x100 | (x2))
 107
 108 static uint32_t lcd_panel_reset[] = {
 109         CMD0(0x1), /* reset */
 110         CMD0(0x0), /* nop */
 111         CMD0(0x0), /* nop */
 112         CMD0(0x0), /* nop */
 113 };
 114
 115 static uint32_t lcd_panel_on[] = {
 116         CMD0(0x29),             /* Display ON */
 117         CMD2(0xB8, 0xFF, 0xF9), /* Output Control */
 118         CMD0(0x11),             /* Sleep out */
 119         CMD1(0xB0, 0x16),       /* Wake */
 120 };
 121
 122 static uint32_t lcd_panel_off[] = {
 123         CMD0(0x28),             /* Display OFF */
 124         CMD2(0xB8, 0x80, 0x02), /* Output Control */
 125         CMD0(0x10),             /* Sleep in */
 126         CMD1(0xB0, 0x00),       /* Deep stand by in */
 127 };
 128
 129 static uint32_t lcd_vga_pass_through[] = {
 130         CMD1(0xB0, 0x16),
 131         CMD1(0xBC, 0x80),
 132         CMD1(0xE1, 0x00),
 133         CMD1(0x36, 0x50),
 134         CMD1(0x3B, 0x00),
 135 };
 136
 137 static uint32_t lcd_qvga_pass_through[] = {
 138         CMD1(0xB0, 0x16),
 139         CMD1(0xBC, 0x81),
 140         CMD1(0xE1, 0x00),
 141         CMD1(0x36, 0x50),
 142         CMD1(0x3B, 0x22),
 143 };
 144
 145 static uint32_t lcd_vga_transfer[] = {
 146         CMD1(0xcf, 0x02),       /* Blanking period control (1) */
 147         CMD2(0xd0, 0x08, 0x04), /* Blanking period control (2) */
 148         CMD1(0xd1, 0x01),       /* CKV timing control on/off */
 149         CMD2(0xd2, 0x14, 0x00), /* CKV 1,2 timing control */
 150         CMD2(0xd3, 0x1a, 0x0f), /* OEV timing control */
 151         CMD2(0xd4, 0x1f, 0xaf), /* ASW timing control (1) */
 152         CMD1(0xd5, 0x14),       /* ASW timing control (2) */
 153         CMD0(0x21),             /* Invert for normally black display */
 154         CMD0(0x29),             /* Display on */
 155 };
 156
 157 static uint32_t lcd_qvga_transfer[] = {
 158         CMD1(0xd6, 0x02),       /* Blanking period control (1) */
 159         CMD2(0xd7, 0x08, 0x04), /* Blanking period control (2) */
 160         CMD1(0xd8, 0x01),       /* CKV timing control on/off */
 161         CMD2(0xd9, 0x00, 0x08), /* CKV 1,2 timing control */
 162         CMD2(0xde, 0x05, 0x0a), /* OEV timing control */
 163         CMD2(0xdf, 0x0a, 0x19), /* ASW timing control (1) */
 164         CMD1(0xe0, 0x0a),       /* ASW timing control (2) */
 165         CMD0(0x21),             /* Invert for normally black display */
 166         CMD0(0x29),             /* Display on */
 167 };
 168
 169 static uint32_t lcd_panel_config[] = {
 170         CMD2(0xb8, 0xff, 0xf9), /* Output control */
 171         CMD0(0x11),             /* sleep out */
 172         CMD1(0xba, 0x01),       /* Display mode (1) */
 173         CMD1(0xbb, 0x00),       /* Display mode (2) */
 174         CMD1(0x3a, 0x60),       /* Display mode 18-bit RGB */
 175         CMD1(0xbf, 0x10),       /* Drive system change control */
 176         CMD1(0xb1, 0x56),       /* Booster operation setup */
 177         CMD1(0xb2, 0x33),       /* Booster mode setup */
 178         CMD1(0xb3, 0x11),       /* Booster frequency setup */
 179         CMD1(0xb4, 0x02),       /* Op amp/system clock */
 180         CMD1(0xb5, 0x35),       /* VCS voltage */
 181         CMD1(0xb6, 0x40),       /* VCOM voltage */
 182         CMD1(0xb7, 0x03),       /* External display signal */
 183         CMD1(0xbd, 0x00),       /* ASW slew rate */
 184         CMD1(0xbe, 0x00),       /* Dummy data for QuadData operation */
 185         CMD1(0xc0, 0x11),       /* Sleep out FR count (A) */
 186         CMD1(0xc1, 0x11),       /* Sleep out FR count (B) */
 187         CMD1(0xc2, 0x11),       /* Sleep out FR count (C) */
 188         CMD2(0xc3, 0x20, 0x40), /* Sleep out FR count (D) */
 189         CMD2(0xc4, 0x60, 0xc0), /* Sleep out FR count (E) */
 190         CMD2(0xc5, 0x10, 0x20), /* Sleep out FR count (F) */
 191         CMD1(0xc6, 0xc0),       /* Sleep out FR count (G) */
 192         CMD2(0xc7, 0x33, 0x43), /* Gamma 1 fine tuning (1) */
 193         CMD1(0xc8, 0x44),       /* Gamma 1 fine tuning (2) */
 194         CMD1(0xc9, 0x33),       /* Gamma 1 inclination adjustment */
 195         CMD1(0xca, 0x00),       /* Gamma 1 blue offset adjustment */
 196         CMD2(0xec, 0x01, 0xf0), /* Horizontal clock cycles */
 197 };
 198
 199 static void ssp_reconfig(struct ssp_dev *dev, int nparam)
 200 {
 201         static int last_nparam = -1;
 202
 203         /* check if it is necessary to re-config SSP */
 204         if (nparam == last_nparam)
 205                 return;
 206
 207         ssp_disable(dev);
 208         ssp_config(dev, (nparam == 2) ? 0x0010058a : 0x00100581, 0x18, 0, 0);
 209
 210         last_nparam = nparam;
 211 }
 212
 213 static void ssp_send_cmd(uint32_t *cmd, int num)
 214 {
 215         static int ssp_initialized;
 216         static struct ssp_dev ssp2;
 217
 218         int i;
 219
 220         if (!ssp_initialized) {
 221                 ssp_init(&ssp2, 2, SSP_NO_IRQ);
 222                 ssp_initialized = 1;
 223         }
 224
 225         clk_enable(ssp2.ssp->clk);
 226         for (i = 0; i < num; i++, cmd++) {
 227                 ssp_reconfig(&ssp2, (*cmd >> 30) & 0x3);
 228                 ssp_write_word(&ssp2, *cmd & 0x3fffffff);
 229
 230                 /* FIXME: ssp_flush() is mandatory here to work */
 231                 ssp_flush(&ssp2);
 232         }
 233         clk_disable(ssp2.ssp->clk);
 234 }
 235
 236 static void littleton_lcd_power(int on, struct fb_var_screeninfo *var)
 237 {
 238         if (on) {
 239                 ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_on));
 240                 ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_reset));
 241                 if (var->xres > 240) {
 242                         /* VGA */
 243                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_vga_pass_through));
 244                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_config));
 245                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_vga_transfer));
 246                 } else {
 247                         /* QVGA */
 248                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_qvga_pass_through));
 249                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_config));
 250                         ssp_send_cmd(ARRAY_AND_SIZE(lcd_qvga_transfer));
 251                 }
 252         } else
 253                 ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_off));
 254 }
 255
 256 static struct pxafb_mode_info tpo_tdo24mtea1_modes[] = {
 257         [0] = {
 258                 /* VGA */
 259                 .pixclock       = 38250,
 260                 .xres           = 480,
 261                 .yres           = 640,
 262                 .bpp            = 16,
 263                 .hsync_len      = 8,
 264                 .left_margin    = 8,
 265                 .right_margin   = 24,
 266                 .vsync_len      = 2,
 267                 .upper_margin   = 2,
 268                 .lower_margin   = 4,
 269                 .sync           = 0,
 270         },
 271         [1] = {
 272                 /* QVGA */
 273                 .pixclock       = 153000,
 274                 .xres           = 240,
 275                 .yres           = 320,
 276                 .bpp            = 16,
 277                 .hsync_len      = 8,
 278                 .left_margin    = 8,
 279                 .right_margin   = 88,
 280                 .vsync_len      = 2,
 281                 .upper_margin   = 2,
 282                 .lower_margin   = 2,
 283                 .sync           = 0,
 284         },
 285 };
 286
 287 static struct pxafb_mach_info littleton_lcd_info = {
 288         .modes                  = tpo_tdo24mtea1_modes,
 289         .num_modes              = 2,
 290         .lccr0                  = LCCR0_Act,
 291         .lccr3                  = LCCR3_HSP | LCCR3_VSP,
 292         .pxafb_lcd_power        = littleton_lcd_power,
 293 };
 294
 295 static void littleton_init_lcd(void)
 296 {
 297         set_pxa_fb_info(&littleton_lcd_info);
 298 }
 299 #else
 300 static inline void littleton_init_lcd(void) {};
 301 #endif /* CONFIG_FB_PXA || CONFIG_FB_PXA_MODULES */
 302
 303 static void __init littleton_init(void)
 304 {
 305         /* initialize MFP configurations */
 306         pxa3xx_mfp_config(ARRAY_AND_SIZE(littleton_mfp_cfg));
 307
 308         /*
 309          * Note: we depend bootloader set the correct
 310          * value to MSC register for SMC91x.
 311          */
 312         platform_device_register(&smc91x_device);
 313
 314         littleton_init_lcd();
 315 }
 316
 317 MACHINE_START(LITTLETON, "Marvell Form Factor Development Platform (aka Littleton)")
 318         .phys_io        = 0x40000000,
 319         .boot_params    = 0xa0000100,
 320         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 321         .map_io         = pxa_map_io,
 322         .init_irq       = pxa3xx_init_irq,
 323         .timer          = &pxa_timer,
 324         .init_machine   = littleton_init,
 325 MACHINE_END