[PATCH v2] ARM: EXYNOS4: Add platform device for dwmci driver.
Seungwon Jeon
tgih.jun at samsung.com
Thu Jul 14 05:53:46 EDT 2011
This patch add platform devices for Synopsys DesignWare Multimedia Card
Interface driver.
Signed-off-by: Seungwon Jeon <tgih.jun at samsung.com>
---
arch/arm/mach-exynos4/Kconfig | 12 ++++
arch/arm/mach-exynos4/Makefile | 1 +
arch/arm/mach-exynos4/dev-dwmci.c | 88 +++++++++++++++++++++++++++++
arch/arm/mach-exynos4/include/mach/irqs.h | 1 +
arch/arm/mach-exynos4/include/mach/map.h | 1 +
arch/arm/plat-samsung/include/plat/devs.h | 1 +
6 files changed, 104 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-exynos4/dev-dwmci.c
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 5115b90..2ec5b96 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -35,6 +35,11 @@ config EXYNOS4_DEV_SYSMMU
help
Common setup code for SYSTEM MMU in EXYNOS4
+config EXYNOS4_DEV_DWMCI
+ bool
+ help
+ Compile in platform device definitions for DWMCI
+
config EXYNOS4_SETUP_I2C1
bool
help
@@ -200,6 +205,13 @@ comment "Configuration for HSMMC bus width"
menu "Use 8-bit bus width"
+config EXYNOS4_DWMCI_8BIT
+ bool "DWMCI with 8-bit bus"
+ depends on EXYNOS4_DEV_DWMCI
+ help
+ Support DWMCI 8-bit bus.
+ If selected, Channel 1 is disabled.
+
config EXYNOS4_SDHCI_CH0_8BIT
bool "Channel 0 with 8-bit bus"
help
diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile
index 60fe5ec..eeeaada 100644
--- a/arch/arm/mach-exynos4/Makefile
+++ b/arch/arm/mach-exynos4/Makefile
@@ -43,6 +43,7 @@ obj-y += dev-audio.o
obj-$(CONFIG_EXYNOS4_DEV_AHCI) += dev-ahci.o
obj-$(CONFIG_EXYNOS4_DEV_PD) += dev-pd.o
obj-$(CONFIG_EXYNOS4_DEV_SYSMMU) += dev-sysmmu.o
+obj-$(CONFIG_EXYNOS4_DEV_DWMCI) += dev-dwmci.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
obj-$(CONFIG_EXYNOS4_SETUP_I2C1) += setup-i2c1.o
diff --git a/arch/arm/mach-exynos4/dev-dwmci.c b/arch/arm/mach-exynos4/dev-dwmci.c
new file mode 100644
index 0000000..a0defa4
--- /dev/null
+++ b/arch/arm/mach-exynos4/dev-dwmci.c
@@ -0,0 +1,88 @@
+/*
+ * linuxarch/arm/mach-exynos4/dev-dwmci.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Platform device for Synopsys DesignWare Mobile Storage IP
+ *
+ * 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/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/mmc/dw_mmc.h>
+#include <linux/mmc/host.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/gpio-cfg.h>
+
+#include <mach/map.h>
+
+#ifdef EXYNOS4_DWMCI_8BIT
+#define BUS_WIDTH 8
+#else
+#define BUS_WIDTH 4
+#endif
+
+static int exynos4_dwmci_get_ocr(u32 slot_id)
+{
+ return MMC_VDD_32_33 | MMC_VDD_33_34;
+}
+
+static int exynos4_dwmci_get_bus_wd(u32 slot_id)
+{
+ return BUS_WIDTH;
+}
+
+static int exynos4_dwmci_init(u32 slot_id, irq_handler_t handler, void *data)
+{
+ return 0;
+}
+
+static struct resource exynos4_dwmci_resource[] = {
+ [0] = {
+ .start = EXYNOS4_PA_DWMCI,
+ .end = EXYNOS4_PA_DWMCI + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_DWMCI,
+ .end = IRQ_DWMCI,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct dw_mci_board exynos4_dwci_pdata = {
+ .num_slots = 1,
+ .quirks = DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
+ .bus_hz = 80*1000*1000,
+ .detect_delay_ms = 200,
+ .init = exynos4_dwmci_init,
+ .get_ocr = exynos4_dwmci_get_ocr,
+ .get_bus_wd = exynos4_dwmci_get_bus_wd,
+ .select_slot = NULL,
+};
+
+static u64 exynos4_dwmci_dmamask = DMA_BIT_MASK(32);
+
+struct platform_device exynos4_device_dwmci = {
+ .name = "dw_mmc",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(exynos4_dwmci_resource),
+ .resource = exynos4_dwmci_resource,
+ .dev = {
+ .dma_mask = &exynos4_dwmci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &exynos4_dwci_pdata,
+ },
+};
+
diff --git a/arch/arm/mach-exynos4/include/mach/irqs.h b/arch/arm/mach-exynos4/include/mach/irqs.h
index 5d03730..b720246 100644
--- a/arch/arm/mach-exynos4/include/mach/irqs.h
+++ b/arch/arm/mach-exynos4/include/mach/irqs.h
@@ -107,6 +107,7 @@
#define IRQ_HSMMC1 COMBINER_IRQ(29, 1)
#define IRQ_HSMMC2 COMBINER_IRQ(29, 2)
#define IRQ_HSMMC3 COMBINER_IRQ(29, 3)
+#define IRQ_DWMCI COMBINER_IRQ(29, 4)
#define IRQ_MIPI_CSIS0 COMBINER_IRQ(30, 0)
#define IRQ_MIPI_CSIS1 COMBINER_IRQ(30, 1)
diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h
index 0009e77..352e500 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -94,6 +94,7 @@
#define EXYNOS4_PA_MIPI_CSIS1 0x11890000
#define EXYNOS4_PA_HSMMC(x) (0x12510000 + ((x) * 0x10000))
+#define EXYNOS4_PA_DWMCI 0x12550000
#define EXYNOS4_PA_SATA 0x12560000
#define EXYNOS4_PA_SATAPHY 0x125D0000
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index e3b31c2..29fa1cf 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -112,6 +112,7 @@ extern struct platform_device exynos4_device_i2s2;
extern struct platform_device exynos4_device_spdif;
extern struct platform_device exynos4_device_pd[];
extern struct platform_device exynos4_device_ahci;
+extern struct platform_device exynos4_device_dwmci;
extern struct platform_device s5p6440_device_pcm;
extern struct platform_device s5p6440_device_iis;
--
1.7.2.3
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