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 213