diff options
Diffstat (limited to 'arch/arm/mach-mx3/mx31ads.c')
| -rw-r--r-- | arch/arm/mach-mx3/mx31ads.c | 169 |
1 files changed, 162 insertions, 7 deletions
diff --git a/arch/arm/mach-mx3/mx31ads.c b/arch/arm/mach-mx3/mx31ads.c index 8f1605ea1fde..fa8346d2fd19 100644 --- a/arch/arm/mach-mx3/mx31ads.c +++ b/arch/arm/mach-mx3/mx31ads.c @@ -270,12 +270,10 @@ static void mxc_init_nor_mtd(void) } #endif -/* MTD NAND flash */ - -#if defined(CONFIG_MTD_NAND_MXC) || defined(CONFIG_MTD_NAND_MXC_MODULE) \ - || defined(CONFIG_MTD_NAND_MXC_V2) || defined(CONFIG_MTD_NAND_MXC_V2_MODULE) +/* NAND Flash Partitions */ +#ifdef CONFIG_MTD_PARTITIONS -static struct mtd_partition mxc_nand_partitions[4] = { +static struct mtd_partition nand_flash_partitions[4] = { { .name = "nand.bootloader", .offset = 0, @@ -294,9 +292,20 @@ static struct mtd_partition mxc_nand_partitions[4] = { .size = MTDPART_SIZ_FULL}, }; +#endif + +/* MTD NAND flash */ + +#if defined(CONFIG_MTD_NAND_MXC) \ + || defined(CONFIG_MTD_NAND_MXC_MODULE) \ + || defined(CONFIG_MTD_NAND_MXC_V2) \ + || defined(CONFIG_MTD_NAND_MXC_V2_MODULE) + static struct flash_platform_data mxc_nand_data = { - .parts = mxc_nand_partitions, - .nr_parts = ARRAY_SIZE(mxc_nand_partitions), + #ifdef CONFIG_MTD_PARTITIONS + .parts = nand_flash_partitions, + .nr_parts = ARRAY_SIZE(nand_flash_partitions), + #endif .width = 1, }; @@ -336,6 +345,151 @@ static inline void mxc_init_nand_mtd(void) } #endif +/* i.MX MTD NAND Flash Controller */ + +#if defined(CONFIG_MTD_NAND_IMX_NFC) || defined(CONFIG_MTD_NAND_IMX_NFC_MODULE) + +/* Resources for this device. */ + +static struct resource imx_nfc_resources[] = { + { + .flags = IORESOURCE_MEM, + .start = NFC_BASE_ADDR + 0x000, + .end = NFC_BASE_ADDR + 0x840 - 1, + .name = IMX_NFC_BUFFERS_ADDR_RES_NAME, + }, + { + .flags = IORESOURCE_MEM, + .start = NFC_BASE_ADDR + 0xE00, + .end = NFC_BASE_ADDR + 0xE20 - 1, + .name = IMX_NFC_PRIMARY_REGS_ADDR_RES_NAME, + }, + { + .flags = IORESOURCE_IRQ, + .start = MXC_INT_NANDFC, + .end = MXC_INT_NANDFC, + .name = IMX_NFC_INTERRUPT_RES_NAME, + }, +}; + +/** + * imx_nfc_set_page_size() - Tells the hardware the page size. + * + * @data_size_in_bytes: The page size in bytes (e.g., 512, 2048, etc.). This + * size refers specifically to the the data bytes in the + * page, *not* including out-of-band bytes. The return + * value is zero if the operation succeeded. Do not + * interpret a non-zero value as an error code - it only + * indicates failure. The driver will decide what error + * code to return to its caller. + */ +static int imx_nfc_set_page_size(unsigned int data_size_in_bytes) +{ + + unsigned long x = __raw_readl(MXC_CCM_RCSR); + + switch (data_size_in_bytes) { + + case 512: + x &= ~MXC_CCM_RCSR_NFMS; + break; + + case 2048: + x |= MXC_CCM_RCSR_NFMS; + break; + + default: + return !0; + break; + + } + + __raw_writel(x, MXC_CCM_RCSR); + + return 0; + +} + +/* + * Platform-specific information about this device. Some of the details depend + * on the SoC. See imx_init_nfc() below for code that fills in the rest. + */ + +static struct imx_nfc_platform_data imx_nfc_platform_data = { + .force_ce = false, + .target_cycle_in_ns = 50, + .clock_name = "nfc_clk", + .set_page_size = imx_nfc_set_page_size, + .interleave = false, + #ifdef CONFIG_MTD_PARTITIONS + .partitions = nand_flash_partitions, + .partition_count = ARRAY_SIZE(nand_flash_partitions), + #endif +}; + +/* The structure that represents the NFC device. */ + +static struct platform_device imx_nfc_device = { + .name = IMX_NFC_DRIVER_NAME, + .id = 0, + .dev = { + .release = mxc_nop_release, + .platform_data = &imx_nfc_platform_data, + }, + .resource = imx_nfc_resources, + .num_resources = ARRAY_SIZE(imx_nfc_resources), +}; + +/** + * imx_init_nfc() - Sets up the NFC for this platform. + * + * This function sets up data structures representing the NFC device on this + * platform and registers the device with the platform management system. + */ + +static void imx_nfc_init(void) +{ + + /* + * A field in the Reset Control and Source Register register tells us + * the bus width. + */ + + if (__raw_readl(MXC_CCM_RCSR) & MXC_CCM_RCSR_NF16B) + imx_nfc_platform_data.bus_width_in_bits = 16; + else + imx_nfc_platform_data.bus_width_in_bits = 8; + + /* + * Discover the type of SoC we're running on and, based on that, fill in + * some details about the NFC. + */ + + if (cpu_is_mx31()) { + imx_nfc_platform_data.major_version = 1; + imx_nfc_platform_data.minor_version = 0; + } else if (cpu_is_mx32()) { + imx_nfc_platform_data.major_version = 2; + imx_nfc_platform_data.minor_version = 0; + } else { + pr_err("imx_nfc: Can't identify the SoC\n"); + BUG(); + } + + /* Register the NFC device. */ + + (void)platform_device_register(&imx_nfc_device); + +} + +#else + +static inline void imx_nfc_init(void) +{ +} + +#endif /* i.MX MTD NAND Flash Controller */ + static struct spi_board_info mxc_spi_board_info[] __initdata = { { .modalias = "pmic_spi", @@ -898,6 +1052,7 @@ static void __init mxc_board_init(void) mxc_init_extuart(); mxc_init_nor_mtd(); mxc_init_nand_mtd(); + imx_nfc_init(); i2c_register_board_info(0, mxc_i2c_info, ARRAY_SIZE(mxc_i2c_info)); spi_register_board_info(mxc_spi_board_info, |