arch/arm/mach-lpc32xx/phy3250.c

   1 /*
   2  * Platform support for LPC32xx SoC
   3  *
   4  * Author: Kevin Wells <kevin.wells@nxp.com>
   5  *
   6  * Copyright (C) 2012 Roland Stigge <stigge@antcom.de>
   7  * Copyright (C) 2010 NXP Semiconductors
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/device.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/irq.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/gpio.h>
  27 #include <linux/amba/bus.h>
  28 #include <linux/amba/clcd.h>
  29 #include <linux/amba/pl08x.h>
  30 #include <linux/amba/mmci.h>
  31 #include <linux/of.h>
  32 #include <linux/of_address.h>
  33 #include <linux/of_irq.h>
  34 #include <linux/of_platform.h>
  35 #include <linux/clk.h>
  36 #include <linux/mtd/lpc32xx_slc.h>
  37 #include <linux/mtd/lpc32xx_mlc.h>
  38
  39 #include <asm/setup.h>
  40 #include <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/platform.h>
  45 #include <mach/board.h>
  46 #include "common.h"
  47
  48 /*
  49  * AMBA LCD controller
  50  */
  51 static struct clcd_panel conn_lcd_panel = {
  52         .mode           = {
  53                 .name           = "QVGA portrait",
  54                 .refresh        = 60,
  55                 .xres           = 240,
  56                 .yres           = 320,
  57                 .pixclock       = 191828,
  58                 .left_margin    = 22,
  59                 .right_margin   = 11,
  60                 .upper_margin   = 2,
  61                 .lower_margin   = 1,
  62                 .hsync_len      = 5,
  63                 .vsync_len      = 2,
  64                 .sync           = 0,
  65                 .vmode          = FB_VMODE_NONINTERLACED,
  66         },
  67         .width          = -1,
  68         .height         = -1,
  69         .tim2           = (TIM2_IVS | TIM2_IHS),
  70         .cntl           = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) |
  71                                 CNTL_LCDBPP16_565),
  72         .bpp            = 16,
  73 };
  74 #define PANEL_SIZE (3 * SZ_64K)
  75
  76 static int lpc32xx_clcd_setup(struct clcd_fb *fb)
  77 {
  78         dma_addr_t dma;
  79
  80         fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, PANEL_SIZE, &dma,
  81                                           GFP_KERNEL);
  82         if (!fb->fb.screen_base) {
  83                 printk(KERN_ERR "CLCD: unable to map framebuffer\n");
  84                 return -ENOMEM;
  85         }
  86
  87         fb->fb.fix.smem_start = dma;
  88         fb->fb.fix.smem_len = PANEL_SIZE;
  89         fb->panel = &conn_lcd_panel;
  90
  91         return 0;
  92 }
  93
  94 static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
  95 {
  96         return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,
  97                            fb->fb.fix.smem_start, fb->fb.fix.smem_len);
  98 }
  99
 100 static void lpc32xx_clcd_remove(struct clcd_fb *fb)
 101 {
 102         dma_free_wc(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base,
 103                     fb->fb.fix.smem_start);
 104 }
 105
 106 static struct clcd_board lpc32xx_clcd_data = {
 107         .name           = "Phytec LCD",
 108         .check          = clcdfb_check,
 109         .decode         = clcdfb_decode,
 110         .setup          = lpc32xx_clcd_setup,
 111         .mmap           = lpc32xx_clcd_mmap,
 112         .remove         = lpc32xx_clcd_remove,
 113 };
 114
 115 static struct pl08x_channel_data pl08x_slave_channels[] = {
 116         {
 117                 .bus_id = "nand-slc",
 118                 .min_signal = 1, /* SLC NAND Flash */
 119                 .max_signal = 1,
 120                 .periph_buses = PL08X_AHB1,
 121         },
 122         {
 123                 .bus_id = "nand-mlc",
 124                 .min_signal = 12, /* MLC NAND Flash */
 125                 .max_signal = 12,
 126                 .periph_buses = PL08X_AHB1,
 127         },
 128 };
 129
 130 static int pl08x_get_signal(const struct pl08x_channel_data *cd)
 131 {
 132         return cd->min_signal;
 133 }
 134
 135 static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch)
 136 {
 137 }
 138
 139 static struct pl08x_platform_data pl08x_pd = {
 140         /* Some reasonable memcpy defaults */
 141         .memcpy_burst_size = PL08X_BURST_SZ_256,
 142         .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
 143         .slave_channels = &pl08x_slave_channels[0],
 144         .num_slave_channels = ARRAY_SIZE(pl08x_slave_channels),
 145         .get_xfer_signal = pl08x_get_signal,
 146         .put_xfer_signal = pl08x_put_signal,
 147         .lli_buses = PL08X_AHB1,
 148         .mem_buses = PL08X_AHB1,
 149 };
 150
 151 static struct mmci_platform_data lpc32xx_mmci_data = {
 152         .ocr_mask       = MMC_VDD_30_31 | MMC_VDD_31_32 |
 153                           MMC_VDD_32_33 | MMC_VDD_33_34,
 154 };
 155
 156 static struct lpc32xx_slc_platform_data lpc32xx_slc_data = {
 157         .dma_filter = pl08x_filter_id,
 158 };
 159
 160 static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = {
 161         .dma_filter = pl08x_filter_id,
 162 };
 163
 164 static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = {
 165         OF_DEV_AUXDATA("arm,pl022", 0x20084000, "dev:ssp0", NULL),
 166         OF_DEV_AUXDATA("arm,pl022", 0x2008C000, "dev:ssp1", NULL),
 167         OF_DEV_AUXDATA("arm,pl110", 0x31040000, "dev:clcd", &lpc32xx_clcd_data),
 168         OF_DEV_AUXDATA("arm,pl080", 0x31000000, "pl08xdmac", &pl08x_pd),
 169         OF_DEV_AUXDATA("arm,pl18x", 0x20098000, "20098000.sd",
 170                        &lpc32xx_mmci_data),
 171         OF_DEV_AUXDATA("nxp,lpc3220-slc", 0x20020000, "20020000.flash",
 172                        &lpc32xx_slc_data),
 173         OF_DEV_AUXDATA("nxp,lpc3220-mlc", 0x200a8000, "200a8000.flash",
 174                        &lpc32xx_mlc_data),
 175         { }
 176 };
 177
 178 static void __init lpc3250_machine_init(void)
 179 {
 180         u32 tmp;
 181
 182         /* Setup LCD muxing to RGB565 */
 183         tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) &
 184                 ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK |
 185                 LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK);
 186         tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16;
 187         __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL);
 188
 189         lpc32xx_serial_init();
 190
 191         /* Test clock needed for UDA1380 initial init */
 192         __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC |
 193                 LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN,
 194                 LPC32XX_CLKPWR_TEST_CLK_SEL);
 195
 196         of_platform_default_populate(NULL, lpc32xx_auxdata_lookup, NULL);
 197 }
 198
 199 static const char *const lpc32xx_dt_compat[] __initconst = {
 200         "nxp,lpc3220",
 201         "nxp,lpc3230",
 202         "nxp,lpc3240",
 203         "nxp,lpc3250",
 204         NULL
 205 };
 206
 207 DT_MACHINE_START(LPC32XX_DT, "LPC32XX SoC (Flattened Device Tree)")
 208         .atag_offset    = 0x100,
 209         .map_io         = lpc32xx_map_io,
 210         .init_machine   = lpc3250_machine_init,
 211         .dt_compat      = lpc32xx_dt_compat,
 212 MACHINE_END