/* * Copyright (C) 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. */ /* * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ /*! * @file mach-mx51/serial.c * * @brief This file contains the UART initiliazation. * * @ingroup MSL_MX51 */ #include #include #include #include #include #include "serial.h" #include "board-mx53_evk.h" #if defined(CONFIG_SERIAL_MXC) || defined(CONFIG_SERIAL_MXC_MODULE) /*! * This is an array where each element holds information about a UART port, * like base address of the UART, interrupt numbers etc. This structure is * passed to the serial_core.c file. Based on which UART is used, the core file * passes back the appropriate port structure as an argument to the control * functions. */ static uart_mxc_port mxc_ports[] = { [0] = { .port = { .iotype = SERIAL_IO_MEM, .fifosize = 32, .flags = ASYNC_BOOT_AUTOCONF, .line = 0, }, .ints_muxed = UART1_MUX_INTS, .mode = UART1_MODE, .ir_mode = UART1_IR, .enabled = UART1_ENABLED, .hardware_flow = UART1_HW_FLOW, .cts_threshold = UART1_UCR4_CTSTL, .dma_enabled = UART1_DMA_ENABLE, .dma_rxbuf_size = UART1_DMA_RXBUFSIZE, .rx_threshold = UART1_UFCR_RXTL, .tx_threshold = UART1_UFCR_TXTL, .dma_tx_id = MXC_DMA_UART1_TX, .dma_rx_id = MXC_DMA_UART1_RX, .rxd_mux = MXC_UART_RXDMUX, }, [1] = { .port = { .iotype = SERIAL_IO_MEM, .fifosize = 32, .flags = ASYNC_BOOT_AUTOCONF, .line = 1, }, .ints_muxed = UART2_MUX_INTS, .mode = UART2_MODE, .ir_mode = UART2_IR, .enabled = UART2_ENABLED, .hardware_flow = UART2_HW_FLOW, .cts_threshold = UART2_UCR4_CTSTL, .dma_enabled = UART2_DMA_ENABLE, .dma_rxbuf_size = UART2_DMA_RXBUFSIZE, .rx_threshold = UART2_UFCR_RXTL, .tx_threshold = UART2_UFCR_TXTL, .dma_tx_id = MXC_DMA_UART2_TX, .dma_rx_id = MXC_DMA_UART2_RX, .rxd_mux = MXC_UART_RXDMUX, }, [2] = { .port = { .iotype = SERIAL_IO_MEM, .fifosize = 32, .flags = ASYNC_BOOT_AUTOCONF, .line = 2, }, .ints_muxed = UART3_MUX_INTS, .mode = UART3_MODE, .ir_mode = UART3_IR, .enabled = UART3_ENABLED, .hardware_flow = UART3_HW_FLOW, .cts_threshold = UART3_UCR4_CTSTL, .dma_enabled = UART3_DMA_ENABLE, .dma_rxbuf_size = UART3_DMA_RXBUFSIZE, .rx_threshold = UART3_UFCR_RXTL, .tx_threshold = UART3_UFCR_TXTL, .dma_tx_id = MXC_DMA_UART3_TX, .dma_rx_id = MXC_DMA_UART3_RX, .rxd_mux = MXC_UART_RXDMUX, }, [3] = { .port = { .iotype = SERIAL_IO_MEM, .fifosize = 32, .flags = ASYNC_BOOT_AUTOCONF, .line = 3, }, .ints_muxed = UART4_MUX_INTS, .mode = UART4_MODE, .ir_mode = UART4_IR, .enabled = UART4_ENABLED, .hardware_flow = UART4_HW_FLOW, .cts_threshold = UART4_UCR4_CTSTL, .dma_enabled = UART4_DMA_ENABLE, .dma_rxbuf_size = UART4_DMA_RXBUFSIZE, .rx_threshold = UART4_UFCR_RXTL, .tx_threshold = UART4_UFCR_TXTL, .dma_tx_id = MXC_DMA_UART4_TX, .dma_rx_id = MXC_DMA_UART4_RX, .rxd_mux = MXC_UART_RXDMUX, }, [4] = { .port = { .iotype = SERIAL_IO_MEM, .fifosize = 32, .flags = ASYNC_BOOT_AUTOCONF, .line = 4, }, .ints_muxed = UART5_MUX_INTS, .mode = UART5_MODE, .ir_mode = UART5_IR, .enabled = UART5_ENABLED, .hardware_flow = UART5_HW_FLOW, .cts_threshold = UART5_UCR4_CTSTL, .dma_enabled = UART5_DMA_ENABLE, .dma_rxbuf_size = UART5_DMA_RXBUFSIZE, .rx_threshold = UART5_UFCR_RXTL, .tx_threshold = UART5_UFCR_TXTL, .dma_tx_id = MXC_DMA_UART5_TX, .dma_rx_id = MXC_DMA_UART5_RX, .rxd_mux = MXC_UART_RXDMUX, }, }; static struct resource mxc_uart_resources1[] = { { .start = UART1_BASE_ADDR, .end = UART1_BASE_ADDR + 0x0B5, .flags = IORESOURCE_MEM, }, { .start = UART1_INT1, .flags = IORESOURCE_IRQ, }, { .start = UART1_INT2, .flags = IORESOURCE_IRQ, }, { .start = UART1_INT3, .flags = IORESOURCE_IRQ, }, }; static struct platform_device mxc_uart_device1 = { .name = "mxcintuart", .id = 0, .num_resources = ARRAY_SIZE(mxc_uart_resources1), .resource = mxc_uart_resources1, .dev = { .platform_data = &mxc_ports[0], }, }; static struct resource mxc_uart_resources2[] = { { .start = UART2_BASE_ADDR, .end = UART2_BASE_ADDR + 0x0B5, .flags = IORESOURCE_MEM, }, { .start = UART2_INT1, .flags = IORESOURCE_IRQ, }, { .start = UART2_INT2, .flags = IORESOURCE_IRQ, }, { .start = UART2_INT3, .flags = IORESOURCE_IRQ, }, }; static struct platform_device mxc_uart_device2 = { .name = "mxcintuart", .id = 1, .num_resources = ARRAY_SIZE(mxc_uart_resources2), .resource = mxc_uart_resources2, .dev = { .platform_data = &mxc_ports[1], }, }; static struct resource mxc_uart_resources3[] = { { .start = UART3_BASE_ADDR, .end = UART3_BASE_ADDR + 0x0B5, .flags = IORESOURCE_MEM, }, { .start = UART3_INT1, .flags = IORESOURCE_IRQ, }, { .start = UART3_INT2, .flags = IORESOURCE_IRQ, }, { .start = UART3_INT3, .flags = IORESOURCE_IRQ, }, }; static struct platform_device mxc_uart_device3 = { .name = "mxcintuart", .id = 2, .num_resources = ARRAY_SIZE(mxc_uart_resources3), .resource = mxc_uart_resources3, .dev = { .platform_data = &mxc_ports[2], }, }; static struct resource mxc_uart_resources4[] = { { .start = UART4_BASE_ADDR, .end = UART4_BASE_ADDR + 0x0B5, .flags = IORESOURCE_MEM, }, { .start = UART4_INT1, .flags = IORESOURCE_IRQ, }, { .start = UART4_INT2, .flags = IORESOURCE_IRQ, }, { .start = UART4_INT3, .flags = IORESOURCE_IRQ, }, }; static struct platform_device mxc_uart_device4 = { .name = "mxcintuart", .id = 3, .num_resources = ARRAY_SIZE(mxc_uart_resources4), .resource = mxc_uart_resources4, .dev = { .platform_data = &mxc_ports[3], }, }; static struct resource mxc_uart_resources5[] = { { .start = UART5_BASE_ADDR, .end = UART5_BASE_ADDR + 0x0B5, .flags = IORESOURCE_MEM, }, { .start = UART5_INT1, .flags = IORESOURCE_IRQ, }, { .start = UART5_INT2, .flags = IORESOURCE_IRQ, }, { .start = UART5_INT3, .flags = IORESOURCE_IRQ, }, }; static struct platform_device mxc_uart_device5 = { .name = "mxcintuart", .id = 4, .num_resources = ARRAY_SIZE(mxc_uart_resources5), .resource = mxc_uart_resources5, .dev = { .platform_data = &mxc_ports[4], }, }; static int __init mxc_init_uart(void) { if (cpu_is_mx53()) { mxc_uart_resources1[0].start -= 0x20000000; mxc_uart_resources1[0].end -= 0x20000000; mxc_uart_resources2[0].start -= 0x20000000; mxc_uart_resources2[0].end -= 0x20000000; mxc_uart_resources3[0].start -= 0x20000000; mxc_uart_resources3[0].end -= 0x20000000; mxc_uart_resources4[0].start -= 0x20000000; mxc_uart_resources4[0].end -= 0x20000000; mxc_uart_resources5[0].start -= 0x20000000; mxc_uart_resources5[0].end -= 0x20000000; } /* Register all the MXC UART platform device structures */ platform_device_register(&mxc_uart_device1); platform_device_register(&mxc_uart_device2); #if UART3_ENABLED == 1 platform_device_register(&mxc_uart_device3); #endif /* UART3_ENABLED */ if (cpu_is_mx53()) { #if UART4_ENABLED == 1 platform_device_register(&mxc_uart_device4); #endif /* UART4_ENABLED */ #if UART5_ENABLED == 1 platform_device_register(&mxc_uart_device5); #endif /* UART5_ENABLED */ } return 0; } #else static int __init mxc_init_uart(void) { return 0; } #endif arch_initcall(mxc_init_uart);