Hi, Kyungmin Park wrote: > On Thu, Jul 14, 2011 at 6:53 PM, Seungwon Jeon <tgih.jun@xxxxxxxxxxx> > wrote: > > This patch add platform devices for Synopsys DesignWare Multimedia Card > > Interface driver. > > > > Signed-off-by: Seungwon Jeon <tgih.jun@xxxxxxxxxxx> > > --- > > 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. > > No it should be determined at runtime instead of compile time. Sorry for that I don't understand your meaning. Perhaps, you want to decide the width according to the board type at runtime? I expect the reason and description about your comment. Bus width is board-specific information related with capability which is not determined in runtime. So we should decide and choice bus width considering the board target before compiling. Best regards, Seungwon Jeon. > > > + > > 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 > > Right, each board can modify the bus width. so it needs the helper > function to setup. > > + > > +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 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-samsung- > soc" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung- > soc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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