diff options
Diffstat (limited to 'arch/arm/mach-s3c64xx/dev-spi.c')
| -rw-r--r-- | arch/arm/mach-s3c64xx/dev-spi.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/arm/mach-s3c64xx/dev-spi.c b/arch/arm/mach-s3c64xx/dev-spi.c deleted file mode 100644 index 5e6b42089eb4..000000000000 --- a/arch/arm/mach-s3c64xx/dev-spi.c +++ /dev/null @@ -1,179 +0,0 @@ -/* linux/arch/arm/plat-s3c64xx/dev-spi.c - * - * Copyright (C) 2009 Samsung Electronics Ltd. - * Jaswinder Singh <jassi.brar@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/gpio.h> - -#include <mach/dma.h> -#include <mach/map.h> -#include <mach/spi-clocks.h> -#include <mach/irqs.h> - -#include <plat/s3c64xx-spi.h> -#include <plat/gpio-cfg.h> -#include <plat/devs.h> - -static char *spi_src_clks[] = { - [S3C64XX_SPI_SRCCLK_PCLK] = "pclk", - [S3C64XX_SPI_SRCCLK_SPIBUS] = "spi-bus", - [S3C64XX_SPI_SRCCLK_48M] = "spi_48m", -}; - -/* SPI Controller platform_devices */ - -/* Since we emulate multi-cs capability, we do not touch the GPC-3,7. - * The emulated CS is toggled by board specific mechanism, as it can - * be either some immediate GPIO or some signal out of some other - * chip in between ... or some yet another way. - * We simply do not assume anything about CS. - */ -static int s3c64xx_spi_cfg_gpio(struct platform_device *pdev) -{ - unsigned int base; - - switch (pdev->id) { - case 0: - base = S3C64XX_GPC(0); - break; - - case 1: - base = S3C64XX_GPC(4); - break; - - default: - dev_err(&pdev->dev, "Invalid SPI Controller number!"); - return -EINVAL; - } - - s3c_gpio_cfgall_range(base, 3, - S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP); - - return 0; -} - -static struct resource s3c64xx_spi0_resource[] = { - [0] = { - .start = S3C64XX_PA_SPI0, - .end = S3C64XX_PA_SPI0 + 0x100 - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = DMACH_SPI0_TX, - .end = DMACH_SPI0_TX, - .flags = IORESOURCE_DMA, - }, - [2] = { - .start = DMACH_SPI0_RX, - .end = DMACH_SPI0_RX, - .flags = IORESOURCE_DMA, - }, - [3] = { - .start = IRQ_SPI0, - .end = IRQ_SPI0, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct s3c64xx_spi_info s3c64xx_spi0_pdata = { - .cfg_gpio = s3c64xx_spi_cfg_gpio, - .fifo_lvl_mask = 0x7f, - .rx_lvl_offset = 13, - .tx_st_done = 21, -}; - -static u64 spi_dmamask = DMA_BIT_MASK(32); - -struct platform_device s3c64xx_device_spi0 = { - .name = "s3c64xx-spi", - .id = 0, - .num_resources = ARRAY_SIZE(s3c64xx_spi0_resource), - .resource = s3c64xx_spi0_resource, - .dev = { - .dma_mask = &spi_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = &s3c64xx_spi0_pdata, - }, -}; -EXPORT_SYMBOL(s3c64xx_device_spi0); - -static struct resource s3c64xx_spi1_resource[] = { - [0] = { - .start = S3C64XX_PA_SPI1, - .end = S3C64XX_PA_SPI1 + 0x100 - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = DMACH_SPI1_TX, - .end = DMACH_SPI1_TX, - .flags = IORESOURCE_DMA, - }, - [2] = { - .start = DMACH_SPI1_RX, - .end = DMACH_SPI1_RX, - .flags = IORESOURCE_DMA, - }, - [3] = { - .start = IRQ_SPI1, - .end = IRQ_SPI1, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct s3c64xx_spi_info s3c64xx_spi1_pdata = { - .cfg_gpio = s3c64xx_spi_cfg_gpio, - .fifo_lvl_mask = 0x7f, - .rx_lvl_offset = 13, - .tx_st_done = 21, -}; - -struct platform_device s3c64xx_device_spi1 = { - .name = "s3c64xx-spi", - .id = 1, - .num_resources = ARRAY_SIZE(s3c64xx_spi1_resource), - .resource = s3c64xx_spi1_resource, - .dev = { - .dma_mask = &spi_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = &s3c64xx_spi1_pdata, - }, -}; -EXPORT_SYMBOL(s3c64xx_device_spi1); - -void __init s3c64xx_spi_set_info(int cntrlr, int src_clk_nr, int num_cs) -{ - struct s3c64xx_spi_info *pd; - - /* Reject invalid configuration */ - if (!num_cs || src_clk_nr < 0 - || src_clk_nr > S3C64XX_SPI_SRCCLK_48M) { - printk(KERN_ERR "%s: Invalid SPI configuration\n", __func__); - return; - } - - switch (cntrlr) { - case 0: - pd = &s3c64xx_spi0_pdata; - break; - case 1: - pd = &s3c64xx_spi1_pdata; - break; - default: - printk(KERN_ERR "%s: Invalid SPI controller(%d)\n", - __func__, cntrlr); - return; - } - - pd->num_cs = num_cs; - pd->src_clk_nr = src_clk_nr; - pd->src_clk_name = spi_src_clks[src_clk_nr]; -} |