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linux-next/arch/arm/mach-davinci/board-mityomapl138.c
Arnd Bergmann 04b9665b54 ARM: davinci: only use NVMEM when available 
The davinci platform contains code that calls into the nvmem
subsystem, but that might be a loadable module, causing a
link error:

arch/arm/mach-davinci/built-in.o: In function `davinci_get_mac_addr':
:(.text+0x1088): undefined reference to `nvmem_device_read'
arch/arm/mach-davinci/built-in.o: In function `read_factory_config':
:(.text+0x214c): undefined reference to `nvmem_device_read'

Also, when NVMEM is completely disabled, the functions fail with
nonobvious error messages.

This ensures we only call the API functions when the code is actually
reachable from the board file, and otherwise prints a unique log
message.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: bec3c11bad ("misc: at24: replace memory_accessor with nvmem_device_read")
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-04-29 11:58:38 -07:00

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/*
* Critical Link MityOMAP-L138 SoM
*
* Copyright (C) 2010 Critical Link LLC - http://www.criticallink.com
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of
* any kind, whether express or implied.
*/
#define pr_fmt(fmt) "MityOMAPL138: " fmt
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/platform_data/at24.h>
#include <linux/etherdevice.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/common.h>
#include "cp_intc.h"
#include <mach/da8xx.h>
#include <linux/platform_data/mtd-davinci.h>
#include <linux/platform_data/mtd-davinci-aemif.h>
#include <mach/mux.h>
#include <linux/platform_data/spi-davinci.h>
#define MITYOMAPL138_PHY_ID ""
#define FACTORY_CONFIG_MAGIC 0x012C0138
#define FACTORY_CONFIG_VERSION 0x00010001
/* Data Held in On-Board I2C device */
struct factory_config {
u32 magic;
u32 version;
u8 mac[6];
u32 fpga_type;
u32 spare;
u32 serialnumber;
char partnum[32];
};
static struct factory_config factory_config;
#ifdef CONFIG_CPU_FREQ
struct part_no_info {
const char *part_no; /* part number string of interest */
int max_freq; /* khz */
};
static struct part_no_info mityomapl138_pn_info[] = {
{
.part_no = "L138-C",
.max_freq = 300000,
},
{
.part_no = "L138-D",
.max_freq = 375000,
},
{
.part_no = "L138-F",
.max_freq = 456000,
},
{
.part_no = "1808-C",
.max_freq = 300000,
},
{
.part_no = "1808-D",
.max_freq = 375000,
},
{
.part_no = "1808-F",
.max_freq = 456000,
},
{
.part_no = "1810-D",
.max_freq = 375000,
},
};
static void mityomapl138_cpufreq_init(const char *partnum)
{
int i, ret;
for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
/*
* the part number has additional characters beyond what is
* stored in the table. This information is not needed for
* determining the speed grade, and would require several
* more table entries. Only check the first N characters
* for a match.
*/
if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
strlen(mityomapl138_pn_info[i].part_no))) {
da850_max_speed = mityomapl138_pn_info[i].max_freq;
break;
}
}
ret = da850_register_cpufreq("pll0_sysclk3");
if (ret)
pr_warn("cpufreq registration failed: %d\n", ret);
}
#else
static void mityomapl138_cpufreq_init(const char *partnum) { }
#endif
static void read_factory_config(struct nvmem_device *nvmem, void *context)
{
int ret;
const char *partnum = NULL;
struct davinci_soc_info *soc_info = &davinci_soc_info;
if (!IS_BUILTIN(CONFIG_NVMEM)) {
pr_warn("Factory Config not available without CONFIG_NVMEM\n");
goto bad_config;
}
ret = nvmem_device_read(nvmem, 0, sizeof(factory_config),
&factory_config);
if (ret != sizeof(struct factory_config)) {
pr_warn("Read Factory Config Failed: %d\n", ret);
goto bad_config;
}
if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
pr_warn("Factory Config Magic Wrong (%X)\n",
factory_config.magic);
goto bad_config;
}
if (factory_config.version != FACTORY_CONFIG_VERSION) {
pr_warn("Factory Config Version Wrong (%X)\n",
factory_config.version);
goto bad_config;
}
pr_info("Found MAC = %pM\n", factory_config.mac);
if (is_valid_ether_addr(factory_config.mac))
memcpy(soc_info->emac_pdata->mac_addr,
factory_config.mac, ETH_ALEN);
else
pr_warn("Invalid MAC found in factory config block\n");
partnum = factory_config.partnum;
pr_info("Part Number = %s\n", partnum);
bad_config:
/* default maximum speed is valid for all platforms */
mityomapl138_cpufreq_init(partnum);
}
static struct at24_platform_data mityomapl138_fd_chip = {
.byte_len = 256,
.page_size = 8,
.flags = AT24_FLAG_READONLY | AT24_FLAG_IRUGO,
.setup = read_factory_config,
.context = NULL,
};
static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
.bus_freq = 100, /* kHz */
.bus_delay = 0, /* usec */
};
/* TPS65023 voltage regulator support */
/* 1.2V Core */
static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
{
.supply = "cvdd",
},
};
/* 1.8V */
static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
{
.supply = "usb0_vdda18",
},
{
.supply = "usb1_vdda18",
},
{
.supply = "ddr_dvdd18",
},
{
.supply = "sata_vddr",
},
};
/* 1.2V */
static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
{
.supply = "sata_vdd",
},
{
.supply = "usb_cvdd",
},
{
.supply = "pll0_vdda",
},
{
.supply = "pll1_vdda",
},
};
/* 1.8V Aux LDO, not used */
static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
{
.supply = "1.8v_aux",
},
};
/* FPGA VCC Aux (2.5 or 3.3) LDO */
static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
{
.supply = "vccaux",
},
};
static struct regulator_init_data tps65023_regulator_data[] = {
/* dcdc1 */
{
.constraints = {
.min_uV = 1150000,
.max_uV = 1350000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
.consumer_supplies = tps65023_dcdc1_consumers,
},
/* dcdc2 */
{
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
.consumer_supplies = tps65023_dcdc2_consumers,
},
/* dcdc3 */
{
.constraints = {
.min_uV = 1200000,
.max_uV = 1200000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
.consumer_supplies = tps65023_dcdc3_consumers,
},
/* ldo1 */
{
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
.consumer_supplies = tps65023_ldo1_consumers,
},
/* ldo2 */
{
.constraints = {
.min_uV = 2500000,
.max_uV = 3300000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
.consumer_supplies = tps65023_ldo2_consumers,
},
};
static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
{
I2C_BOARD_INFO("tps65023", 0x48),
.platform_data = &tps65023_regulator_data[0],
},
{
I2C_BOARD_INFO("24c02", 0x50),
.platform_data = &mityomapl138_fd_chip,
},
};
static int __init pmic_tps65023_init(void)
{
return i2c_register_board_info(1, mityomap_tps65023_info,
ARRAY_SIZE(mityomap_tps65023_info));
}
/*
* SPI Devices:
* SPI1_CS0: 8M Flash ST-M25P64-VME6G
*/
static struct mtd_partition spi_flash_partitions[] = {
[0] = {
.name = "ubl",
.offset = 0,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[1] = {
.name = "u-boot",
.offset = MTDPART_OFS_APPEND,
.size = SZ_512K,
.mask_flags = MTD_WRITEABLE,
},
[2] = {
.name = "u-boot-env",
.offset = MTDPART_OFS_APPEND,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[3] = {
.name = "periph-config",
.offset = MTDPART_OFS_APPEND,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[4] = {
.name = "reserved",
.offset = MTDPART_OFS_APPEND,
.size = SZ_256K + SZ_64K,
},
[5] = {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M + SZ_1M,
},
[6] = {
.name = "fpga",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
},
[7] = {
.name = "spare",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct flash_platform_data mityomapl138_spi_flash_data = {
.name = "m25p80",
.parts = spi_flash_partitions,
.nr_parts = ARRAY_SIZE(spi_flash_partitions),
.type = "m24p64",
};
static struct davinci_spi_config spi_eprom_config = {
.io_type = SPI_IO_TYPE_DMA,
.c2tdelay = 8,
.t2cdelay = 8,
};
static struct spi_board_info mityomapl138_spi_flash_info[] = {
{
.modalias = "m25p80",
.platform_data = &mityomapl138_spi_flash_data,
.controller_data = &spi_eprom_config,
.mode = SPI_MODE_0,
.max_speed_hz = 30000000,
.bus_num = 1,
.chip_select = 0,
},
};
/*
* MityDSP-L138 includes a 256 MByte large-page NAND flash
* (128K blocks).
*/
static struct mtd_partition mityomapl138_nandflash_partition[] = {
{
.name = "rootfs",
.offset = 0,
.size = SZ_128M,
.mask_flags = 0, /* MTD_WRITEABLE, */
},
{
.name = "homefs",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
},
};
static struct davinci_nand_pdata mityomapl138_nandflash_data = {
.parts = mityomapl138_nandflash_partition,
.nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition),
.ecc_mode = NAND_ECC_HW,
.bbt_options = NAND_BBT_USE_FLASH,
.options = NAND_BUSWIDTH_16,
.ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */
};
static struct resource mityomapl138_nandflash_resource[] = {
{
.start = DA8XX_AEMIF_CS3_BASE,
.end = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
{
.start = DA8XX_AEMIF_CTL_BASE,
.end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mityomapl138_nandflash_device = {
.name = "davinci_nand",
.id = 1,
.dev = {
.platform_data = &mityomapl138_nandflash_data,
},
.num_resources = ARRAY_SIZE(mityomapl138_nandflash_resource),
.resource = mityomapl138_nandflash_resource,
};
static struct platform_device *mityomapl138_devices[] __initdata = {
&mityomapl138_nandflash_device,
};
static void __init mityomapl138_setup_nand(void)
{
platform_add_devices(mityomapl138_devices,
ARRAY_SIZE(mityomapl138_devices));
if (davinci_aemif_setup(&mityomapl138_nandflash_device))
pr_warn("%s: Cannot configure AEMIF\n", __func__);
}
static const short mityomap_mii_pins[] = {
DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
DA850_MDIO_D,
-1
};
static const short mityomap_rmii_pins[] = {
DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
DA850_MDIO_D,
-1
};
static void __init mityomapl138_config_emac(void)
{
void __iomem *cfg_chip3_base;
int ret;
u32 val;
struct davinci_soc_info *soc_info = &davinci_soc_info;
soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
val = __raw_readl(cfg_chip3_base);
if (soc_info->emac_pdata->rmii_en) {
val |= BIT(8);
ret = davinci_cfg_reg_list(mityomap_rmii_pins);
pr_info("RMII PHY configured\n");
} else {
val &= ~BIT(8);
ret = davinci_cfg_reg_list(mityomap_mii_pins);
pr_info("MII PHY configured\n");
}
if (ret) {
pr_warn("mii/rmii mux setup failed: %d\n", ret);
return;
}
/* configure the CFGCHIP3 register for RMII or MII */
__raw_writel(val, cfg_chip3_base);
soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
ret = da8xx_register_emac();
if (ret)
pr_warn("emac registration failed: %d\n", ret);
}
static struct davinci_pm_config da850_pm_pdata = {
.sleepcount = 128,
};
static struct platform_device da850_pm_device = {
.name = "pm-davinci",
.dev = {
.platform_data = &da850_pm_pdata,
},
.id = -1,
};
static void __init mityomapl138_init(void)
{
int ret;
/* for now, no special EDMA channels are reserved */
ret = da850_register_edma(NULL);
if (ret)
pr_warn("edma registration failed: %d\n", ret);
ret = da8xx_register_watchdog();
if (ret)
pr_warn("watchdog registration failed: %d\n", ret);
davinci_serial_init(da8xx_serial_device);
ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
if (ret)
pr_warn("i2c0 registration failed: %d\n", ret);
ret = pmic_tps65023_init();
if (ret)
pr_warn("TPS65023 PMIC init failed: %d\n", ret);
mityomapl138_setup_nand();
ret = spi_register_board_info(mityomapl138_spi_flash_info,
ARRAY_SIZE(mityomapl138_spi_flash_info));
if (ret)
pr_warn("spi info registration failed: %d\n", ret);
ret = da8xx_register_spi_bus(1,
ARRAY_SIZE(mityomapl138_spi_flash_info));
if (ret)
pr_warn("spi 1 registration failed: %d\n", ret);
mityomapl138_config_emac();
ret = da8xx_register_rtc();
if (ret)
pr_warn("rtc setup failed: %d\n", ret);
ret = da8xx_register_cpuidle();
if (ret)
pr_warn("cpuidle registration failed: %d\n", ret);
ret = da850_register_pm(&da850_pm_device);
if (ret)
pr_warn("suspend registration failed: %d\n", ret);
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init mityomapl138_console_init(void)
{
if (!machine_is_mityomapl138())
return 0;
return add_preferred_console("ttyS", 1, "115200");
}
console_initcall(mityomapl138_console_init);
#endif
static void __init mityomapl138_map_io(void)
{
da850_init();
}
MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
.atag_offset = 0x100,
.map_io = mityomapl138_map_io,
.init_irq = cp_intc_init,
.init_time = davinci_timer_init,
.init_machine = mityomapl138_init,
.init_late = davinci_init_late,
.dma_zone_size = SZ_128M,
.restart = da8xx_restart,
MACHINE_END
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