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304 lines
7.3 KiB
304 lines
7.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* mach-davinci/devices.c |
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* |
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* DaVinci platform device setup/initialization |
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*/ |
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#include <linux/init.h> |
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#include <linux/platform_device.h> |
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#include <linux/platform_data/i2c-davinci.h> |
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#include <linux/platform_data/mmc-davinci.h> |
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#include <linux/platform_data/edma.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/io.h> |
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#include <linux/reboot.h> |
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#include <mach/hardware.h> |
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#include <mach/cputype.h> |
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#include <mach/mux.h> |
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#include "davinci.h" |
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#include "irqs.h" |
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#define DAVINCI_I2C_BASE 0x01C21000 |
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#define DAVINCI_ATA_BASE 0x01C66000 |
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#define DAVINCI_MMCSD0_BASE 0x01E10000 |
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#define DM355_MMCSD0_BASE 0x01E11000 |
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#define DM355_MMCSD1_BASE 0x01E00000 |
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#define DM365_MMCSD0_BASE 0x01D11000 |
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#define DM365_MMCSD1_BASE 0x01D00000 |
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void __iomem *davinci_sysmod_base; |
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void davinci_map_sysmod(void) |
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{ |
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davinci_sysmod_base = ioremap(DAVINCI_SYSTEM_MODULE_BASE, |
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0x800); |
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/* |
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* Throw a bug since a lot of board initialization code depends |
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* on system module availability. ioremap() failing this early |
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* need careful looking into anyway. |
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*/ |
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BUG_ON(!davinci_sysmod_base); |
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} |
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static struct resource i2c_resources[] = { |
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{ |
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.start = DAVINCI_I2C_BASE, |
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.end = DAVINCI_I2C_BASE + 0x40, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = DAVINCI_INTC_IRQ(IRQ_I2C), |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device davinci_i2c_device = { |
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.name = "i2c_davinci", |
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.id = 1, |
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.num_resources = ARRAY_SIZE(i2c_resources), |
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.resource = i2c_resources, |
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}; |
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void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata) |
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{ |
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if (cpu_is_davinci_dm644x()) |
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davinci_cfg_reg(DM644X_I2C); |
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davinci_i2c_device.dev.platform_data = pdata; |
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(void) platform_device_register(&davinci_i2c_device); |
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} |
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static struct resource ide_resources[] = { |
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{ |
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.start = DAVINCI_ATA_BASE, |
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.end = DAVINCI_ATA_BASE + 0x7ff, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = DAVINCI_INTC_IRQ(IRQ_IDE), |
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.end = DAVINCI_INTC_IRQ(IRQ_IDE), |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static u64 ide_dma_mask = DMA_BIT_MASK(32); |
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static struct platform_device ide_device = { |
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.name = "palm_bk3710", |
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.id = -1, |
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.resource = ide_resources, |
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.num_resources = ARRAY_SIZE(ide_resources), |
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.dev = { |
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.dma_mask = &ide_dma_mask, |
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.coherent_dma_mask = DMA_BIT_MASK(32), |
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}, |
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}; |
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void __init davinci_init_ide(void) |
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{ |
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if (cpu_is_davinci_dm644x()) { |
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davinci_cfg_reg(DM644X_HPIEN_DISABLE); |
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davinci_cfg_reg(DM644X_ATAEN); |
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davinci_cfg_reg(DM644X_HDIREN); |
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} else if (cpu_is_davinci_dm646x()) { |
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/* IRQ_DM646X_IDE is the same as IRQ_IDE */ |
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davinci_cfg_reg(DM646X_ATAEN); |
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} else { |
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WARN_ON(1); |
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return; |
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} |
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platform_device_register(&ide_device); |
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} |
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#if IS_ENABLED(CONFIG_MMC_DAVINCI) |
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static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32); |
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static struct resource mmcsd0_resources[] = { |
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{ |
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/* different on dm355 */ |
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.start = DAVINCI_MMCSD0_BASE, |
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.end = DAVINCI_MMCSD0_BASE + SZ_4K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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/* IRQs: MMC/SD, then SDIO */ |
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{ |
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.start = DAVINCI_INTC_IRQ(IRQ_MMCINT), |
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.flags = IORESOURCE_IRQ, |
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}, { |
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/* different on dm355 */ |
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.start = DAVINCI_INTC_IRQ(IRQ_SDIOINT), |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device davinci_mmcsd0_device = { |
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.name = "dm6441-mmc", |
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.id = 0, |
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.dev = { |
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.dma_mask = &mmcsd0_dma_mask, |
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.coherent_dma_mask = DMA_BIT_MASK(32), |
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}, |
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.num_resources = ARRAY_SIZE(mmcsd0_resources), |
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.resource = mmcsd0_resources, |
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}; |
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static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32); |
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static struct resource mmcsd1_resources[] = { |
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{ |
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.start = DM355_MMCSD1_BASE, |
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.end = DM355_MMCSD1_BASE + SZ_4K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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/* IRQs: MMC/SD, then SDIO */ |
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{ |
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.start = DAVINCI_INTC_IRQ(IRQ_DM355_MMCINT1), |
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.flags = IORESOURCE_IRQ, |
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}, { |
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.start = DAVINCI_INTC_IRQ(IRQ_DM355_SDIOINT1), |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device davinci_mmcsd1_device = { |
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.name = "dm6441-mmc", |
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.id = 1, |
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.dev = { |
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.dma_mask = &mmcsd1_dma_mask, |
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.coherent_dma_mask = DMA_BIT_MASK(32), |
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}, |
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.num_resources = ARRAY_SIZE(mmcsd1_resources), |
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.resource = mmcsd1_resources, |
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}; |
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) |
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{ |
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struct platform_device *pdev = NULL; |
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if (WARN_ON(cpu_is_davinci_dm646x())) |
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return; |
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/* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too; |
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* for example if MMCSD1 is used for SDIO, maybe DAT2 is unused. |
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* |
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* FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are |
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* not handled right here ... |
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*/ |
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switch (module) { |
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case 1: |
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if (cpu_is_davinci_dm355()) { |
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/* REVISIT we may not need all these pins if e.g. this |
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* is a hard-wired SDIO device... |
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*/ |
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davinci_cfg_reg(DM355_SD1_CMD); |
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davinci_cfg_reg(DM355_SD1_CLK); |
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davinci_cfg_reg(DM355_SD1_DATA0); |
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davinci_cfg_reg(DM355_SD1_DATA1); |
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davinci_cfg_reg(DM355_SD1_DATA2); |
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davinci_cfg_reg(DM355_SD1_DATA3); |
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} else if (cpu_is_davinci_dm365()) { |
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/* Configure pull down control */ |
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unsigned v; |
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v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1)); |
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__raw_writel(v & ~0xfc0, |
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DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1)); |
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mmcsd1_resources[0].start = DM365_MMCSD1_BASE; |
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mmcsd1_resources[0].end = DM365_MMCSD1_BASE + |
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SZ_4K - 1; |
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mmcsd1_resources[2].start = DAVINCI_INTC_IRQ( |
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IRQ_DM365_SDIOINT1); |
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davinci_mmcsd1_device.name = "da830-mmc"; |
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} else |
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break; |
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pdev = &davinci_mmcsd1_device; |
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break; |
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case 0: |
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if (cpu_is_davinci_dm355()) { |
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mmcsd0_resources[0].start = DM355_MMCSD0_BASE; |
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mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1; |
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mmcsd0_resources[2].start = DAVINCI_INTC_IRQ( |
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IRQ_DM355_SDIOINT0); |
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/* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */ |
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davinci_cfg_reg(DM355_MMCSD0); |
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/* enable RX EDMA */ |
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davinci_cfg_reg(DM355_EVT26_MMC0_RX); |
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} else if (cpu_is_davinci_dm365()) { |
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mmcsd0_resources[0].start = DM365_MMCSD0_BASE; |
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mmcsd0_resources[0].end = DM365_MMCSD0_BASE + |
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SZ_4K - 1; |
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mmcsd0_resources[2].start = DAVINCI_INTC_IRQ( |
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IRQ_DM365_SDIOINT0); |
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davinci_mmcsd0_device.name = "da830-mmc"; |
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} else if (cpu_is_davinci_dm644x()) { |
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/* REVISIT: should this be in board-init code? */ |
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/* Power-on 3.3V IO cells */ |
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__raw_writel(0, |
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DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN)); |
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/*Set up the pull regiter for MMC */ |
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davinci_cfg_reg(DM644X_MSTK); |
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} |
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pdev = &davinci_mmcsd0_device; |
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break; |
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} |
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if (WARN_ON(!pdev)) |
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return; |
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pdev->dev.platform_data = config; |
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platform_device_register(pdev); |
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} |
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#else |
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) |
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{ |
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} |
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#endif |
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/*-------------------------------------------------------------------------*/ |
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static struct resource wdt_resources[] = { |
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{ |
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.start = DAVINCI_WDOG_BASE, |
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.end = DAVINCI_WDOG_BASE + SZ_1K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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}; |
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static struct platform_device davinci_wdt_device = { |
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.name = "davinci-wdt", |
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.id = -1, |
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.num_resources = ARRAY_SIZE(wdt_resources), |
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.resource = wdt_resources, |
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}; |
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int davinci_init_wdt(void) |
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{ |
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return platform_device_register(&davinci_wdt_device); |
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} |
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static struct platform_device davinci_gpio_device = { |
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.name = "davinci_gpio", |
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.id = -1, |
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}; |
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int davinci_gpio_register(struct resource *res, int size, void *pdata) |
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{ |
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davinci_gpio_device.resource = res; |
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davinci_gpio_device.num_resources = size; |
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davinci_gpio_device.dev.platform_data = pdata; |
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return platform_device_register(&davinci_gpio_device); |
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}
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