forked from mirrors/linux
d7e9d01ac2
This patch adds support for ColdFire eDMA platform driver. Signed-off-by: Angelo Dureghello <angelo@sysam.it> Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
617 lines
13 KiB
C
617 lines
13 KiB
C
/*
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* device.c -- common ColdFire SoC device support
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*
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* (C) Copyright 2011, Greg Ungerer <gerg@uclinux.org>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/spi/spi.h>
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#include <linux/gpio.h>
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#include <linux/fec.h>
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#include <linux/dmaengine.h>
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#include <asm/traps.h>
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#include <asm/coldfire.h>
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#include <asm/mcfsim.h>
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#include <asm/mcfuart.h>
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#include <asm/mcfqspi.h>
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#include <linux/platform_data/edma.h>
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#include <linux/platform_data/dma-mcf-edma.h>
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/*
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* All current ColdFire parts contain from 2, 3, 4 or 10 UARTS.
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*/
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static struct mcf_platform_uart mcf_uart_platform_data[] = {
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{
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.mapbase = MCFUART_BASE0,
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.irq = MCF_IRQ_UART0,
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},
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{
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.mapbase = MCFUART_BASE1,
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.irq = MCF_IRQ_UART1,
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},
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#ifdef MCFUART_BASE2
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{
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.mapbase = MCFUART_BASE2,
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.irq = MCF_IRQ_UART2,
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},
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#endif
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#ifdef MCFUART_BASE3
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{
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.mapbase = MCFUART_BASE3,
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.irq = MCF_IRQ_UART3,
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},
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#endif
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#ifdef MCFUART_BASE4
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{
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.mapbase = MCFUART_BASE4,
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.irq = MCF_IRQ_UART4,
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},
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#endif
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#ifdef MCFUART_BASE5
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{
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.mapbase = MCFUART_BASE5,
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.irq = MCF_IRQ_UART5,
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},
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#endif
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#ifdef MCFUART_BASE6
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{
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.mapbase = MCFUART_BASE6,
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.irq = MCF_IRQ_UART6,
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},
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#endif
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#ifdef MCFUART_BASE7
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{
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.mapbase = MCFUART_BASE7,
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.irq = MCF_IRQ_UART7,
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},
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#endif
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#ifdef MCFUART_BASE8
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{
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.mapbase = MCFUART_BASE8,
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.irq = MCF_IRQ_UART8,
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},
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#endif
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#ifdef MCFUART_BASE9
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{
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.mapbase = MCFUART_BASE9,
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.irq = MCF_IRQ_UART9,
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},
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#endif
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{ },
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};
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static struct platform_device mcf_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = mcf_uart_platform_data,
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};
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#if IS_ENABLED(CONFIG_FEC)
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#ifdef CONFIG_M5441x
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#define FEC_NAME "enet-fec"
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static struct fec_platform_data fec_pdata = {
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.phy = PHY_INTERFACE_MODE_RMII,
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};
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#define FEC_PDATA (&fec_pdata)
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#else
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#define FEC_NAME "fec"
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#define FEC_PDATA NULL
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#endif
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/*
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* Some ColdFire cores contain the Fast Ethernet Controller (FEC)
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* block. It is Freescale's own hardware block. Some ColdFires
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* have 2 of these.
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*/
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static struct resource mcf_fec0_resources[] = {
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{
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.start = MCFFEC_BASE0,
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.end = MCFFEC_BASE0 + MCFFEC_SIZE0 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_FECRX0,
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.end = MCF_IRQ_FECRX0,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = MCF_IRQ_FECTX0,
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.end = MCF_IRQ_FECTX0,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = MCF_IRQ_FECENTC0,
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.end = MCF_IRQ_FECENTC0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_fec0 = {
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.name = FEC_NAME,
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.id = 0,
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.num_resources = ARRAY_SIZE(mcf_fec0_resources),
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.resource = mcf_fec0_resources,
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.dev = {
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.dma_mask = &mcf_fec0.dev.coherent_dma_mask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = FEC_PDATA,
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}
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};
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#ifdef MCFFEC_BASE1
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static struct resource mcf_fec1_resources[] = {
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{
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.start = MCFFEC_BASE1,
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.end = MCFFEC_BASE1 + MCFFEC_SIZE1 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_FECRX1,
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.end = MCF_IRQ_FECRX1,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = MCF_IRQ_FECTX1,
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.end = MCF_IRQ_FECTX1,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = MCF_IRQ_FECENTC1,
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.end = MCF_IRQ_FECENTC1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_fec1 = {
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.name = FEC_NAME,
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.id = 1,
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.num_resources = ARRAY_SIZE(mcf_fec1_resources),
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.resource = mcf_fec1_resources,
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.dev = {
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.dma_mask = &mcf_fec1.dev.coherent_dma_mask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = FEC_PDATA,
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}
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};
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#endif /* MCFFEC_BASE1 */
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#endif /* CONFIG_FEC */
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#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
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/*
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* The ColdFire QSPI module is an SPI protocol hardware block used
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* on a number of different ColdFire CPUs.
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*/
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static struct resource mcf_qspi_resources[] = {
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{
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.start = MCFQSPI_BASE,
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.end = MCFQSPI_BASE + MCFQSPI_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_QSPI,
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.end = MCF_IRQ_QSPI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static int mcf_cs_setup(struct mcfqspi_cs_control *cs_control)
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{
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int status;
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status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0");
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if (status) {
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pr_debug("gpio_request for MCFQSPI_CS0 failed\n");
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goto fail0;
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}
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status = gpio_direction_output(MCFQSPI_CS0, 1);
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if (status) {
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pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n");
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goto fail1;
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}
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status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1");
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if (status) {
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pr_debug("gpio_request for MCFQSPI_CS1 failed\n");
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goto fail1;
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}
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status = gpio_direction_output(MCFQSPI_CS1, 1);
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if (status) {
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pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n");
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goto fail2;
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}
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status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2");
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if (status) {
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pr_debug("gpio_request for MCFQSPI_CS2 failed\n");
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goto fail2;
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}
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status = gpio_direction_output(MCFQSPI_CS2, 1);
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if (status) {
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pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n");
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goto fail3;
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}
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#ifdef MCFQSPI_CS3
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status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3");
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if (status) {
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pr_debug("gpio_request for MCFQSPI_CS3 failed\n");
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goto fail3;
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}
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status = gpio_direction_output(MCFQSPI_CS3, 1);
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if (status) {
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pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n");
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gpio_free(MCFQSPI_CS3);
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goto fail3;
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}
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#endif
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return 0;
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fail3:
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gpio_free(MCFQSPI_CS2);
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fail2:
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gpio_free(MCFQSPI_CS1);
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fail1:
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gpio_free(MCFQSPI_CS0);
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fail0:
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return status;
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}
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static void mcf_cs_teardown(struct mcfqspi_cs_control *cs_control)
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{
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#ifdef MCFQSPI_CS3
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gpio_free(MCFQSPI_CS3);
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#endif
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gpio_free(MCFQSPI_CS2);
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gpio_free(MCFQSPI_CS1);
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gpio_free(MCFQSPI_CS0);
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}
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static void mcf_cs_select(struct mcfqspi_cs_control *cs_control,
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u8 chip_select, bool cs_high)
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{
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switch (chip_select) {
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case 0:
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gpio_set_value(MCFQSPI_CS0, cs_high);
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break;
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case 1:
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gpio_set_value(MCFQSPI_CS1, cs_high);
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break;
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case 2:
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gpio_set_value(MCFQSPI_CS2, cs_high);
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break;
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#ifdef MCFQSPI_CS3
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case 3:
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gpio_set_value(MCFQSPI_CS3, cs_high);
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break;
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#endif
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}
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}
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static void mcf_cs_deselect(struct mcfqspi_cs_control *cs_control,
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u8 chip_select, bool cs_high)
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{
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switch (chip_select) {
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case 0:
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gpio_set_value(MCFQSPI_CS0, !cs_high);
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break;
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case 1:
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gpio_set_value(MCFQSPI_CS1, !cs_high);
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break;
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case 2:
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gpio_set_value(MCFQSPI_CS2, !cs_high);
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break;
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#ifdef MCFQSPI_CS3
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case 3:
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gpio_set_value(MCFQSPI_CS3, !cs_high);
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break;
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#endif
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}
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}
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static struct mcfqspi_cs_control mcf_cs_control = {
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.setup = mcf_cs_setup,
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.teardown = mcf_cs_teardown,
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.select = mcf_cs_select,
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.deselect = mcf_cs_deselect,
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};
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static struct mcfqspi_platform_data mcf_qspi_data = {
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.bus_num = 0,
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.num_chipselect = 4,
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.cs_control = &mcf_cs_control,
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};
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static struct platform_device mcf_qspi = {
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.name = "mcfqspi",
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.id = 0,
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.num_resources = ARRAY_SIZE(mcf_qspi_resources),
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.resource = mcf_qspi_resources,
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.dev.platform_data = &mcf_qspi_data,
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};
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#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
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#if IS_ENABLED(CONFIG_I2C_IMX)
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static struct resource mcf_i2c0_resources[] = {
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{
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.start = MCFI2C_BASE0,
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.end = MCFI2C_BASE0 + MCFI2C_SIZE0 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C0,
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.end = MCF_IRQ_I2C0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c0 = {
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.name = "imx1-i2c",
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.id = 0,
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.num_resources = ARRAY_SIZE(mcf_i2c0_resources),
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.resource = mcf_i2c0_resources,
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};
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#ifdef MCFI2C_BASE1
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static struct resource mcf_i2c1_resources[] = {
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{
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.start = MCFI2C_BASE1,
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.end = MCFI2C_BASE1 + MCFI2C_SIZE1 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C1,
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.end = MCF_IRQ_I2C1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c1 = {
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.name = "imx1-i2c",
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.id = 1,
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.num_resources = ARRAY_SIZE(mcf_i2c1_resources),
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.resource = mcf_i2c1_resources,
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};
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#endif /* MCFI2C_BASE1 */
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#ifdef MCFI2C_BASE2
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static struct resource mcf_i2c2_resources[] = {
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{
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.start = MCFI2C_BASE2,
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.end = MCFI2C_BASE2 + MCFI2C_SIZE2 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C2,
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.end = MCF_IRQ_I2C2,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c2 = {
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.name = "imx1-i2c",
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.id = 2,
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.num_resources = ARRAY_SIZE(mcf_i2c2_resources),
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.resource = mcf_i2c2_resources,
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};
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#endif /* MCFI2C_BASE2 */
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#ifdef MCFI2C_BASE3
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static struct resource mcf_i2c3_resources[] = {
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{
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.start = MCFI2C_BASE3,
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.end = MCFI2C_BASE3 + MCFI2C_SIZE3 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C3,
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.end = MCF_IRQ_I2C3,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c3 = {
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.name = "imx1-i2c",
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.id = 3,
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.num_resources = ARRAY_SIZE(mcf_i2c3_resources),
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.resource = mcf_i2c3_resources,
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};
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#endif /* MCFI2C_BASE3 */
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#ifdef MCFI2C_BASE4
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static struct resource mcf_i2c4_resources[] = {
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{
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.start = MCFI2C_BASE4,
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.end = MCFI2C_BASE4 + MCFI2C_SIZE4 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C4,
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.end = MCF_IRQ_I2C4,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c4 = {
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.name = "imx1-i2c",
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.id = 4,
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.num_resources = ARRAY_SIZE(mcf_i2c4_resources),
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.resource = mcf_i2c4_resources,
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};
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#endif /* MCFI2C_BASE4 */
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#ifdef MCFI2C_BASE5
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static struct resource mcf_i2c5_resources[] = {
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{
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.start = MCFI2C_BASE5,
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.end = MCFI2C_BASE5 + MCFI2C_SIZE5 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = MCF_IRQ_I2C5,
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.end = MCF_IRQ_I2C5,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mcf_i2c5 = {
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.name = "imx1-i2c",
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.id = 5,
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.num_resources = ARRAY_SIZE(mcf_i2c5_resources),
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.resource = mcf_i2c5_resources,
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};
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#endif /* MCFI2C_BASE5 */
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#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
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#if IS_ENABLED(CONFIG_MCF_EDMA)
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static const struct dma_slave_map mcf_edma_map[] = {
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{ "dreq0", "rx-tx", MCF_EDMA_FILTER_PARAM(0) },
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{ "dreq1", "rx-tx", MCF_EDMA_FILTER_PARAM(1) },
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{ "uart.0", "rx", MCF_EDMA_FILTER_PARAM(2) },
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{ "uart.0", "tx", MCF_EDMA_FILTER_PARAM(3) },
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{ "uart.1", "rx", MCF_EDMA_FILTER_PARAM(4) },
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{ "uart.1", "tx", MCF_EDMA_FILTER_PARAM(5) },
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{ "uart.2", "rx", MCF_EDMA_FILTER_PARAM(6) },
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{ "uart.2", "tx", MCF_EDMA_FILTER_PARAM(7) },
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{ "timer0", "rx-tx", MCF_EDMA_FILTER_PARAM(8) },
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{ "timer1", "rx-tx", MCF_EDMA_FILTER_PARAM(9) },
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{ "timer2", "rx-tx", MCF_EDMA_FILTER_PARAM(10) },
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{ "timer3", "rx-tx", MCF_EDMA_FILTER_PARAM(11) },
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{ "fsl-dspi.0", "rx", MCF_EDMA_FILTER_PARAM(12) },
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{ "fsl-dspi.0", "tx", MCF_EDMA_FILTER_PARAM(13) },
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{ "fsl-dspi.1", "rx", MCF_EDMA_FILTER_PARAM(14) },
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{ "fsl-dspi.1", "tx", MCF_EDMA_FILTER_PARAM(15) },
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};
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static struct mcf_edma_platform_data mcf_edma_data = {
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.dma_channels = 64,
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.slave_map = mcf_edma_map,
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.slavecnt = ARRAY_SIZE(mcf_edma_map),
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};
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static struct resource mcf_edma_resources[] = {
|
|
{
|
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.start = MCFEDMA_BASE,
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.end = MCFEDMA_BASE + MCFEDMA_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
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|
},
|
|
{
|
|
.start = MCFEDMA_IRQ_INTR0,
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.end = MCFEDMA_IRQ_INTR0 + 15,
|
|
.flags = IORESOURCE_IRQ,
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|
.name = "edma-tx-00-15",
|
|
},
|
|
{
|
|
.start = MCFEDMA_IRQ_INTR16,
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|
.end = MCFEDMA_IRQ_INTR16 + 39,
|
|
.flags = IORESOURCE_IRQ,
|
|
.name = "edma-tx-16-55",
|
|
},
|
|
{
|
|
.start = MCFEDMA_IRQ_INTR56,
|
|
.end = MCFEDMA_IRQ_INTR56,
|
|
.flags = IORESOURCE_IRQ,
|
|
.name = "edma-tx-56-63",
|
|
},
|
|
{
|
|
.start = MCFEDMA_IRQ_ERR,
|
|
.end = MCFEDMA_IRQ_ERR,
|
|
.flags = IORESOURCE_IRQ,
|
|
.name = "edma-err",
|
|
},
|
|
};
|
|
|
|
static u64 mcf_edma_dmamask = DMA_BIT_MASK(32);
|
|
|
|
static struct platform_device mcf_edma = {
|
|
.name = "mcf-edma",
|
|
.id = 0,
|
|
.num_resources = ARRAY_SIZE(mcf_edma_resources),
|
|
.resource = mcf_edma_resources,
|
|
.dev = {
|
|
.dma_mask = &mcf_edma_dmamask,
|
|
.coherent_dma_mask = DMA_BIT_MASK(32),
|
|
.platform_data = &mcf_edma_data,
|
|
}
|
|
};
|
|
|
|
#endif /* IS_ENABLED(CONFIG_MCF_EDMA) */
|
|
|
|
static struct platform_device *mcf_devices[] __initdata = {
|
|
&mcf_uart,
|
|
#if IS_ENABLED(CONFIG_FEC)
|
|
&mcf_fec0,
|
|
#ifdef MCFFEC_BASE1
|
|
&mcf_fec1,
|
|
#endif
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
|
|
&mcf_qspi,
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_I2C_IMX)
|
|
&mcf_i2c0,
|
|
#ifdef MCFI2C_BASE1
|
|
&mcf_i2c1,
|
|
#endif
|
|
#ifdef MCFI2C_BASE2
|
|
&mcf_i2c2,
|
|
#endif
|
|
#ifdef MCFI2C_BASE3
|
|
&mcf_i2c3,
|
|
#endif
|
|
#ifdef MCFI2C_BASE4
|
|
&mcf_i2c4,
|
|
#endif
|
|
#ifdef MCFI2C_BASE5
|
|
&mcf_i2c5,
|
|
#endif
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_MCF_EDMA)
|
|
&mcf_edma,
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* Some ColdFire UARTs let you set the IRQ line to use.
|
|
*/
|
|
static void __init mcf_uart_set_irq(void)
|
|
{
|
|
#ifdef MCFUART_UIVR
|
|
/* UART0 interrupt setup */
|
|
writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCFSIM_UART1ICR);
|
|
writeb(MCF_IRQ_UART0, MCFUART_BASE0 + MCFUART_UIVR);
|
|
mcf_mapirq2imr(MCF_IRQ_UART0, MCFINTC_UART0);
|
|
|
|
/* UART1 interrupt setup */
|
|
writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCFSIM_UART2ICR);
|
|
writeb(MCF_IRQ_UART1, MCFUART_BASE1 + MCFUART_UIVR);
|
|
mcf_mapirq2imr(MCF_IRQ_UART1, MCFINTC_UART1);
|
|
#endif
|
|
}
|
|
|
|
static int __init mcf_init_devices(void)
|
|
{
|
|
mcf_uart_set_irq();
|
|
platform_add_devices(mcf_devices, ARRAY_SIZE(mcf_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mcf_init_devices);
|
|
|