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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/mach-davinci/devices.c
Initial import
Diffstat (limited to 'arch/arm/mach-davinci/devices.c')
-rw-r--r--arch/arm/mach-davinci/devices.c350
1 files changed, 350 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
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+++ b/arch/arm/mach-davinci/devices.c
@@ -0,0 +1,350 @@
+/*
+ * mach-davinci/devices.c
+ *
+ * DaVinci platform device setup/initialization
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/reboot.h>
+
+#include <mach/hardware.h>
+#include <linux/platform_data/i2c-davinci.h>
+#include <mach/irqs.h>
+#include <mach/cputype.h>
+#include <mach/mux.h>
+#include <linux/platform_data/mmc-davinci.h>
+#include <mach/time.h>
+#include <linux/platform_data/edma.h>
+
+
+#include "davinci.h"
+#include "clock.h"
+
+#define DAVINCI_I2C_BASE 0x01C21000
+#define DAVINCI_ATA_BASE 0x01C66000
+#define DAVINCI_MMCSD0_BASE 0x01E10000
+#define DM355_MMCSD0_BASE 0x01E11000
+#define DM355_MMCSD1_BASE 0x01E00000
+#define DM365_MMCSD0_BASE 0x01D11000
+#define DM365_MMCSD1_BASE 0x01D00000
+
+#define DAVINCI_DMA_MMCRXEVT 26
+#define DAVINCI_DMA_MMCTXEVT 27
+
+void __iomem *davinci_sysmod_base;
+
+void davinci_map_sysmod(void)
+{
+ davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
+ 0x800);
+ /*
+ * Throw a bug since a lot of board initialization code depends
+ * on system module availability. ioremap() failing this early
+ * need careful looking into anyway.
+ */
+ BUG_ON(!davinci_sysmod_base);
+}
+
+static struct resource i2c_resources[] = {
+ {
+ .start = DAVINCI_I2C_BASE,
+ .end = DAVINCI_I2C_BASE + 0x40,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_I2C,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device davinci_i2c_device = {
+ .name = "i2c_davinci",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(i2c_resources),
+ .resource = i2c_resources,
+};
+
+void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
+{
+ if (cpu_is_davinci_dm644x())
+ davinci_cfg_reg(DM644X_I2C);
+
+ davinci_i2c_device.dev.platform_data = pdata;
+ (void) platform_device_register(&davinci_i2c_device);
+}
+
+static struct resource ide_resources[] = {
+ {
+ .start = DAVINCI_ATA_BASE,
+ .end = DAVINCI_ATA_BASE + 0x7ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_IDE,
+ .end = IRQ_IDE,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ide_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device ide_device = {
+ .name = "palm_bk3710",
+ .id = -1,
+ .resource = ide_resources,
+ .num_resources = ARRAY_SIZE(ide_resources),
+ .dev = {
+ .dma_mask = &ide_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+void __init davinci_init_ide(void)
+{
+ if (cpu_is_davinci_dm644x()) {
+ davinci_cfg_reg(DM644X_HPIEN_DISABLE);
+ davinci_cfg_reg(DM644X_ATAEN);
+ davinci_cfg_reg(DM644X_HDIREN);
+ } else if (cpu_is_davinci_dm646x()) {
+ /* IRQ_DM646X_IDE is the same as IRQ_IDE */
+ davinci_cfg_reg(DM646X_ATAEN);
+ } else {
+ WARN_ON(1);
+ return;
+ }
+
+ platform_device_register(&ide_device);
+}
+
+#if IS_ENABLED(CONFIG_MMC_DAVINCI)
+
+static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
+
+static struct resource mmcsd0_resources[] = {
+ {
+ /* different on dm355 */
+ .start = DAVINCI_MMCSD0_BASE,
+ .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ /* IRQs: MMC/SD, then SDIO */
+ {
+ .start = IRQ_MMCINT,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ /* different on dm355 */
+ .start = IRQ_SDIOINT,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* DMA channels: RX, then TX */
+ {
+ .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
+ .flags = IORESOURCE_DMA,
+ }, {
+ .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+static struct platform_device davinci_mmcsd0_device = {
+ .name = "dm6441-mmc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &mmcsd0_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(mmcsd0_resources),
+ .resource = mmcsd0_resources,
+};
+
+static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
+
+static struct resource mmcsd1_resources[] = {
+ {
+ .start = DM355_MMCSD1_BASE,
+ .end = DM355_MMCSD1_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ /* IRQs: MMC/SD, then SDIO */
+ {
+ .start = IRQ_DM355_MMCINT1,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ .start = IRQ_DM355_SDIOINT1,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* DMA channels: RX, then TX */
+ {
+ .start = EDMA_CTLR_CHAN(0, 30), /* rx */
+ .flags = IORESOURCE_DMA,
+ }, {
+ .start = EDMA_CTLR_CHAN(0, 31), /* tx */
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+static struct platform_device davinci_mmcsd1_device = {
+ .name = "dm6441-mmc",
+ .id = 1,
+ .dev = {
+ .dma_mask = &mmcsd1_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(mmcsd1_resources),
+ .resource = mmcsd1_resources,
+};
+
+
+void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
+{
+ struct platform_device *pdev = NULL;
+
+ if (WARN_ON(cpu_is_davinci_dm646x()))
+ return;
+
+ /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
+ * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
+ *
+ * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
+ * not handled right here ...
+ */
+ switch (module) {
+ case 1:
+ if (cpu_is_davinci_dm355()) {
+ /* REVISIT we may not need all these pins if e.g. this
+ * is a hard-wired SDIO device...
+ */
+ davinci_cfg_reg(DM355_SD1_CMD);
+ davinci_cfg_reg(DM355_SD1_CLK);
+ davinci_cfg_reg(DM355_SD1_DATA0);
+ davinci_cfg_reg(DM355_SD1_DATA1);
+ davinci_cfg_reg(DM355_SD1_DATA2);
+ davinci_cfg_reg(DM355_SD1_DATA3);
+ } else if (cpu_is_davinci_dm365()) {
+ /* Configure pull down control */
+ unsigned v;
+
+ v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
+ __raw_writel(v & ~0xfc0,
+ DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
+
+ mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
+ mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
+ SZ_4K - 1;
+ mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
+ davinci_mmcsd1_device.name = "da830-mmc";
+ } else
+ break;
+
+ pdev = &davinci_mmcsd1_device;
+ break;
+ case 0:
+ if (cpu_is_davinci_dm355()) {
+ mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
+ mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
+ mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
+
+ /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
+ davinci_cfg_reg(DM355_MMCSD0);
+
+ /* enable RX EDMA */
+ davinci_cfg_reg(DM355_EVT26_MMC0_RX);
+ } else if (cpu_is_davinci_dm365()) {
+ mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
+ mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
+ SZ_4K - 1;
+ mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
+ davinci_mmcsd0_device.name = "da830-mmc";
+ } else if (cpu_is_davinci_dm644x()) {
+ /* REVISIT: should this be in board-init code? */
+ /* Power-on 3.3V IO cells */
+ __raw_writel(0,
+ DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
+ /*Set up the pull regiter for MMC */
+ davinci_cfg_reg(DM644X_MSTK);
+ }
+
+ pdev = &davinci_mmcsd0_device;
+ break;
+ }
+
+ if (WARN_ON(!pdev))
+ return;
+
+ pdev->dev.platform_data = config;
+ platform_device_register(pdev);
+}
+
+#else
+
+void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
+{
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static struct resource wdt_resources[] = {
+ {
+ .start = DAVINCI_WDOG_BASE,
+ .end = DAVINCI_WDOG_BASE + SZ_1K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+struct platform_device davinci_wdt_device = {
+ .name = "davinci-wdt",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(wdt_resources),
+ .resource = wdt_resources,
+};
+
+void davinci_restart(enum reboot_mode mode, const char *cmd)
+{
+ davinci_watchdog_reset(&davinci_wdt_device);
+}
+
+int davinci_init_wdt(void)
+{
+ return platform_device_register(&davinci_wdt_device);
+}
+
+static struct platform_device davinci_gpio_device = {
+ .name = "davinci_gpio",
+ .id = -1,
+};
+
+int davinci_gpio_register(struct resource *res, int size, void *pdata)
+{
+ davinci_gpio_device.resource = res;
+ davinci_gpio_device.num_resources = size;
+ davinci_gpio_device.dev.platform_data = pdata;
+ return platform_device_register(&davinci_gpio_device);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*-------------------------------------------------------------------------*/
+
+struct davinci_timer_instance davinci_timer_instance[2] = {
+ {
+ .base = DAVINCI_TIMER0_BASE,
+ .bottom_irq = IRQ_TINT0_TINT12,
+ .top_irq = IRQ_TINT0_TINT34,
+ },
+ {
+ .base = DAVINCI_TIMER1_BASE,
+ .bottom_irq = IRQ_TINT1_TINT12,
+ .top_irq = IRQ_TINT1_TINT34,
+ },
+};
+