cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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board-dm355-evm.c (11245B)


      1/*
      2 * TI DaVinci EVM board support
      3 *
      4 * Author: Kevin Hilman, Deep Root Systems, LLC
      5 *
      6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
      7 * the terms of the GNU General Public License version 2. This program
      8 * is licensed "as is" without any warranty of any kind, whether express
      9 * or implied.
     10 */
     11#include <linux/kernel.h>
     12#include <linux/init.h>
     13#include <linux/err.h>
     14#include <linux/platform_device.h>
     15#include <linux/mtd/mtd.h>
     16#include <linux/mtd/partitions.h>
     17#include <linux/mtd/rawnand.h>
     18#include <linux/i2c.h>
     19#include <linux/gpio.h>
     20#include <linux/gpio/machine.h>
     21#include <linux/clk.h>
     22#include <linux/dm9000.h>
     23#include <linux/videodev2.h>
     24#include <media/i2c/tvp514x.h>
     25#include <linux/spi/spi.h>
     26#include <linux/spi/eeprom.h>
     27#include <linux/platform_data/gpio-davinci.h>
     28#include <linux/platform_data/i2c-davinci.h>
     29#include <linux/platform_data/mtd-davinci.h>
     30#include <linux/platform_data/mmc-davinci.h>
     31#include <linux/platform_data/usb-davinci.h>
     32
     33#include <asm/mach-types.h>
     34#include <asm/mach/arch.h>
     35
     36#include "serial.h"
     37#include "common.h"
     38#include "davinci.h"
     39
     40/* NOTE:  this is geared for the standard config, with a socketed
     41 * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
     42 * swap chips, maybe with a different block size, partitioning may
     43 * need to be changed.
     44 */
     45#define NAND_BLOCK_SIZE		SZ_128K
     46
     47static struct mtd_partition davinci_nand_partitions[] = {
     48	{
     49		/* UBL (a few copies) plus U-Boot */
     50		.name		= "bootloader",
     51		.offset		= 0,
     52		.size		= 15 * NAND_BLOCK_SIZE,
     53		.mask_flags	= MTD_WRITEABLE, /* force read-only */
     54	}, {
     55		/* U-Boot environment */
     56		.name		= "params",
     57		.offset		= MTDPART_OFS_APPEND,
     58		.size		= 1 * NAND_BLOCK_SIZE,
     59		.mask_flags	= 0,
     60	}, {
     61		.name		= "kernel",
     62		.offset		= MTDPART_OFS_APPEND,
     63		.size		= SZ_4M,
     64		.mask_flags	= 0,
     65	}, {
     66		.name		= "filesystem1",
     67		.offset		= MTDPART_OFS_APPEND,
     68		.size		= SZ_512M,
     69		.mask_flags	= 0,
     70	}, {
     71		.name		= "filesystem2",
     72		.offset		= MTDPART_OFS_APPEND,
     73		.size		= MTDPART_SIZ_FULL,
     74		.mask_flags	= 0,
     75	}
     76	/* two blocks with bad block table (and mirror) at the end */
     77};
     78
     79static struct davinci_nand_pdata davinci_nand_data = {
     80	.core_chipsel		= 0,
     81	.mask_chipsel		= BIT(14),
     82	.parts			= davinci_nand_partitions,
     83	.nr_parts		= ARRAY_SIZE(davinci_nand_partitions),
     84	.engine_type		= NAND_ECC_ENGINE_TYPE_ON_HOST,
     85	.bbt_options		= NAND_BBT_USE_FLASH,
     86	.ecc_bits		= 4,
     87};
     88
     89static struct resource davinci_nand_resources[] = {
     90	{
     91		.start		= DM355_ASYNC_EMIF_DATA_CE0_BASE,
     92		.end		= DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
     93		.flags		= IORESOURCE_MEM,
     94	}, {
     95		.start		= DM355_ASYNC_EMIF_CONTROL_BASE,
     96		.end		= DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
     97		.flags		= IORESOURCE_MEM,
     98	},
     99};
    100
    101static struct platform_device davinci_nand_device = {
    102	.name			= "davinci_nand",
    103	.id			= 0,
    104
    105	.num_resources		= ARRAY_SIZE(davinci_nand_resources),
    106	.resource		= davinci_nand_resources,
    107
    108	.dev			= {
    109		.platform_data	= &davinci_nand_data,
    110	},
    111};
    112
    113#define DM355_I2C_SDA_PIN	GPIO_TO_PIN(0, 15)
    114#define DM355_I2C_SCL_PIN	GPIO_TO_PIN(0, 14)
    115
    116static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
    117	.dev_id = "i2c_davinci.1",
    118	.table = {
    119		GPIO_LOOKUP("davinci_gpio", DM355_I2C_SDA_PIN, "sda",
    120			    GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
    121		GPIO_LOOKUP("davinci_gpio", DM355_I2C_SCL_PIN, "scl",
    122			    GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
    123		{ }
    124	},
    125};
    126
    127static struct davinci_i2c_platform_data i2c_pdata = {
    128	.bus_freq	= 400	/* kHz */,
    129	.bus_delay	= 0	/* usec */,
    130	.gpio_recovery	= true,
    131};
    132
    133static int dm355evm_mmc_gpios = -EINVAL;
    134
    135static void dm355evm_mmcsd_gpios(unsigned gpio)
    136{
    137	gpio_request(gpio + 0, "mmc0_ro");
    138	gpio_request(gpio + 1, "mmc0_cd");
    139	gpio_request(gpio + 2, "mmc1_ro");
    140	gpio_request(gpio + 3, "mmc1_cd");
    141
    142	/* we "know" these are input-only so we don't
    143	 * need to call gpio_direction_input()
    144	 */
    145
    146	dm355evm_mmc_gpios = gpio;
    147}
    148
    149static struct i2c_board_info dm355evm_i2c_info[] = {
    150	{	I2C_BOARD_INFO("dm355evm_msp", 0x25),
    151		.platform_data = dm355evm_mmcsd_gpios,
    152	},
    153	/* { plus irq  }, */
    154	{ I2C_BOARD_INFO("tlv320aic33", 0x1b), },
    155};
    156
    157static void __init evm_init_i2c(void)
    158{
    159	gpiod_add_lookup_table(&i2c_recovery_gpiod_table);
    160	davinci_init_i2c(&i2c_pdata);
    161
    162	gpio_request(5, "dm355evm_msp");
    163	gpio_direction_input(5);
    164	dm355evm_i2c_info[0].irq = gpio_to_irq(5);
    165
    166	i2c_register_board_info(1, dm355evm_i2c_info,
    167			ARRAY_SIZE(dm355evm_i2c_info));
    168}
    169
    170static struct resource dm355evm_dm9000_rsrc[] = {
    171	{
    172		/* addr */
    173		.start	= 0x04014000,
    174		.end	= 0x04014001,
    175		.flags	= IORESOURCE_MEM,
    176	}, {
    177		/* data */
    178		.start	= 0x04014002,
    179		.end	= 0x04014003,
    180		.flags	= IORESOURCE_MEM,
    181	}, {
    182		.flags	= IORESOURCE_IRQ
    183			| IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
    184	},
    185};
    186
    187static struct dm9000_plat_data dm335evm_dm9000_platdata;
    188
    189static struct platform_device dm355evm_dm9000 = {
    190	.name		= "dm9000",
    191	.id		= -1,
    192	.resource	= dm355evm_dm9000_rsrc,
    193	.num_resources	= ARRAY_SIZE(dm355evm_dm9000_rsrc),
    194	.dev		= {
    195		.platform_data = &dm335evm_dm9000_platdata,
    196	},
    197};
    198
    199static struct tvp514x_platform_data tvp5146_pdata = {
    200	.clk_polarity = 0,
    201	.hs_polarity = 1,
    202	.vs_polarity = 1
    203};
    204
    205#define TVP514X_STD_ALL	(V4L2_STD_NTSC | V4L2_STD_PAL)
    206/* Inputs available at the TVP5146 */
    207static struct v4l2_input tvp5146_inputs[] = {
    208	{
    209		.index = 0,
    210		.name = "Composite",
    211		.type = V4L2_INPUT_TYPE_CAMERA,
    212		.std = TVP514X_STD_ALL,
    213	},
    214	{
    215		.index = 1,
    216		.name = "S-Video",
    217		.type = V4L2_INPUT_TYPE_CAMERA,
    218		.std = TVP514X_STD_ALL,
    219	},
    220};
    221
    222/*
    223 * this is the route info for connecting each input to decoder
    224 * ouput that goes to vpfe. There is a one to one correspondence
    225 * with tvp5146_inputs
    226 */
    227static struct vpfe_route tvp5146_routes[] = {
    228	{
    229		.input = INPUT_CVBS_VI2B,
    230		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
    231	},
    232	{
    233		.input = INPUT_SVIDEO_VI2C_VI1C,
    234		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
    235	},
    236};
    237
    238static struct vpfe_subdev_info vpfe_sub_devs[] = {
    239	{
    240		.name = "tvp5146",
    241		.grp_id = 0,
    242		.num_inputs = ARRAY_SIZE(tvp5146_inputs),
    243		.inputs = tvp5146_inputs,
    244		.routes = tvp5146_routes,
    245		.can_route = 1,
    246		.ccdc_if_params = {
    247			.if_type = VPFE_BT656,
    248			.hdpol = VPFE_PINPOL_POSITIVE,
    249			.vdpol = VPFE_PINPOL_POSITIVE,
    250		},
    251		.board_info = {
    252			I2C_BOARD_INFO("tvp5146", 0x5d),
    253			.platform_data = &tvp5146_pdata,
    254		},
    255	}
    256};
    257
    258static struct vpfe_config vpfe_cfg = {
    259	.num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
    260	.i2c_adapter_id = 1,
    261	.sub_devs = vpfe_sub_devs,
    262	.card_name = "DM355 EVM",
    263	.ccdc = "DM355 CCDC",
    264};
    265
    266/* venc standards timings */
    267static struct vpbe_enc_mode_info dm355evm_enc_preset_timing[] = {
    268	{
    269		.name		= "ntsc",
    270		.timings_type	= VPBE_ENC_STD,
    271		.std_id		= V4L2_STD_NTSC,
    272		.interlaced	= 1,
    273		.xres		= 720,
    274		.yres		= 480,
    275		.aspect		= {11, 10},
    276		.fps		= {30000, 1001},
    277		.left_margin	= 0x79,
    278		.upper_margin	= 0x10,
    279	},
    280	{
    281		.name		= "pal",
    282		.timings_type	= VPBE_ENC_STD,
    283		.std_id		= V4L2_STD_PAL,
    284		.interlaced	= 1,
    285		.xres		= 720,
    286		.yres		= 576,
    287		.aspect		= {54, 59},
    288		.fps		= {25, 1},
    289		.left_margin	= 0x7E,
    290		.upper_margin	= 0x16
    291	},
    292};
    293
    294#define VENC_STD_ALL	(V4L2_STD_NTSC | V4L2_STD_PAL)
    295
    296/*
    297 * The outputs available from VPBE + ecnoders. Keep the
    298 * the order same as that of encoders. First those from venc followed by that
    299 * from encoders. Index in the output refers to index on a particular encoder.
    300 * Driver uses this index to pass it to encoder when it supports more than
    301 * one output. Application uses index of the array to set an output.
    302 */
    303static struct vpbe_output dm355evm_vpbe_outputs[] = {
    304	{
    305		.output		= {
    306			.index		= 0,
    307			.name		= "Composite",
    308			.type		= V4L2_OUTPUT_TYPE_ANALOG,
    309			.std		= VENC_STD_ALL,
    310			.capabilities	= V4L2_OUT_CAP_STD,
    311		},
    312		.subdev_name	= DM355_VPBE_VENC_SUBDEV_NAME,
    313		.default_mode	= "ntsc",
    314		.num_modes	= ARRAY_SIZE(dm355evm_enc_preset_timing),
    315		.modes		= dm355evm_enc_preset_timing,
    316		.if_params	= MEDIA_BUS_FMT_FIXED,
    317	},
    318};
    319
    320static struct vpbe_config dm355evm_display_cfg = {
    321	.module_name	= "dm355-vpbe-display",
    322	.i2c_adapter_id	= 1,
    323	.osd		= {
    324		.module_name	= DM355_VPBE_OSD_SUBDEV_NAME,
    325	},
    326	.venc		= {
    327		.module_name	= DM355_VPBE_VENC_SUBDEV_NAME,
    328	},
    329	.num_outputs	= ARRAY_SIZE(dm355evm_vpbe_outputs),
    330	.outputs	= dm355evm_vpbe_outputs,
    331};
    332
    333static struct platform_device *davinci_evm_devices[] __initdata = {
    334	&dm355evm_dm9000,
    335	&davinci_nand_device,
    336};
    337
    338static void __init dm355_evm_map_io(void)
    339{
    340	dm355_init();
    341}
    342
    343static int dm355evm_mmc_get_cd(int module)
    344{
    345	if (!gpio_is_valid(dm355evm_mmc_gpios))
    346		return -ENXIO;
    347	/* low == card present */
    348	return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
    349}
    350
    351static int dm355evm_mmc_get_ro(int module)
    352{
    353	if (!gpio_is_valid(dm355evm_mmc_gpios))
    354		return -ENXIO;
    355	/* high == card's write protect switch active */
    356	return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
    357}
    358
    359static struct davinci_mmc_config dm355evm_mmc_config = {
    360	.get_cd		= dm355evm_mmc_get_cd,
    361	.get_ro		= dm355evm_mmc_get_ro,
    362	.wires		= 4,
    363	.max_freq       = 50000000,
    364	.caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
    365};
    366
    367/* Don't connect anything to J10 unless you're only using USB host
    368 * mode *and* have to do so with some kind of gender-bender.  If
    369 * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
    370 * the ID pin won't need any help.
    371 */
    372#define USB_ID_VALUE	1	/* ID pulled low */
    373
    374static struct spi_eeprom at25640a = {
    375	.byte_len	= SZ_64K / 8,
    376	.name		= "at25640a",
    377	.page_size	= 32,
    378	.flags		= EE_ADDR2,
    379};
    380
    381static const struct spi_board_info dm355_evm_spi_info[] __initconst = {
    382	{
    383		.modalias	= "at25",
    384		.platform_data	= &at25640a,
    385		.max_speed_hz	= 10 * 1000 * 1000,	/* at 3v3 */
    386		.bus_num	= 0,
    387		.chip_select	= 0,
    388		.mode		= SPI_MODE_0,
    389	},
    390};
    391
    392static __init void dm355_evm_init(void)
    393{
    394	struct clk *aemif;
    395	int ret;
    396
    397	dm355_register_clocks();
    398
    399	ret = dm355_gpio_register();
    400	if (ret)
    401		pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
    402
    403	gpio_request(1, "dm9000");
    404	gpio_direction_input(1);
    405	dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
    406
    407	aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
    408	if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
    409		clk_prepare_enable(aemif);
    410
    411	platform_add_devices(davinci_evm_devices,
    412			     ARRAY_SIZE(davinci_evm_devices));
    413	evm_init_i2c();
    414	davinci_serial_init(dm355_serial_device);
    415
    416	/* NOTE:  NAND flash timings set by the UBL are slower than
    417	 * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
    418	 * but could be 0x0400008c for about 25% faster page reads.
    419	 */
    420
    421	gpio_request(2, "usb_id_toggle");
    422	gpio_direction_output(2, USB_ID_VALUE);
    423	/* irlml6401 switches over 1A in under 8 msec */
    424	davinci_setup_usb(1000, 8);
    425
    426	davinci_setup_mmc(0, &dm355evm_mmc_config);
    427	davinci_setup_mmc(1, &dm355evm_mmc_config);
    428
    429	dm355_init_video(&vpfe_cfg, &dm355evm_display_cfg);
    430
    431	dm355_init_spi0(BIT(0), dm355_evm_spi_info,
    432			ARRAY_SIZE(dm355_evm_spi_info));
    433
    434	/* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
    435	dm355_init_asp1(ASP1_TX_EVT_EN | ASP1_RX_EVT_EN);
    436}
    437
    438MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
    439	.atag_offset  = 0x100,
    440	.map_io	      = dm355_evm_map_io,
    441	.init_irq     = dm355_init_irq,
    442	.init_time	= dm355_init_time,
    443	.init_machine = dm355_evm_init,
    444	.init_late	= davinci_init_late,
    445	.dma_zone_size	= SZ_128M,
    446MACHINE_END