X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fspi%2Fomap3_spi.c;h=1beaea778877d8faccb4de9c51af4450badac667;hb=41575d8e4c334df148c4cdd7c40cc825dc0fcaa1;hp=6a615d1498e3f03994b0f0735bf4d67d74b802d3;hpb=60c7facfc965af6ff8ea14ee26c9d49cd2d0ec22;p=platform%2Fkernel%2Fu-boot.git diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index 6a615d1..1beaea7 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -22,96 +22,15 @@ #include #include #include +#include DECLARE_GLOBAL_DATA_PTR; -#if defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX) -#define OMAP3_MCSPI1_BASE 0x48030100 -#define OMAP3_MCSPI2_BASE 0x481A0100 -#else -#define OMAP3_MCSPI1_BASE 0x48098000 -#define OMAP3_MCSPI2_BASE 0x4809A000 -#define OMAP3_MCSPI3_BASE 0x480B8000 -#define OMAP3_MCSPI4_BASE 0x480BA000 -#endif - -#define OMAP4_MCSPI_REG_OFFSET 0x100 - struct omap2_mcspi_platform_config { unsigned int regs_offset; }; -/* per-register bitmasks */ -#define OMAP3_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3) -#define OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP BIT(2) -#define OMAP3_MCSPI_SYSCONFIG_AUTOIDLE BIT(0) -#define OMAP3_MCSPI_SYSCONFIG_SOFTRESET BIT(1) - -#define OMAP3_MCSPI_SYSSTATUS_RESETDONE BIT(0) - -#define OMAP3_MCSPI_MODULCTRL_SINGLE BIT(0) -#define OMAP3_MCSPI_MODULCTRL_MS BIT(2) -#define OMAP3_MCSPI_MODULCTRL_STEST BIT(3) - -#define OMAP3_MCSPI_CHCONF_PHA BIT(0) -#define OMAP3_MCSPI_CHCONF_POL BIT(1) -#define OMAP3_MCSPI_CHCONF_CLKD_MASK GENMASK(5, 2) -#define OMAP3_MCSPI_CHCONF_EPOL BIT(6) -#define OMAP3_MCSPI_CHCONF_WL_MASK GENMASK(11, 7) -#define OMAP3_MCSPI_CHCONF_TRM_RX_ONLY BIT(12) -#define OMAP3_MCSPI_CHCONF_TRM_TX_ONLY BIT(13) -#define OMAP3_MCSPI_CHCONF_TRM_MASK GENMASK(13, 12) -#define OMAP3_MCSPI_CHCONF_DMAW BIT(14) -#define OMAP3_MCSPI_CHCONF_DMAR BIT(15) -#define OMAP3_MCSPI_CHCONF_DPE0 BIT(16) -#define OMAP3_MCSPI_CHCONF_DPE1 BIT(17) -#define OMAP3_MCSPI_CHCONF_IS BIT(18) -#define OMAP3_MCSPI_CHCONF_TURBO BIT(19) -#define OMAP3_MCSPI_CHCONF_FORCE BIT(20) - -#define OMAP3_MCSPI_CHSTAT_RXS BIT(0) -#define OMAP3_MCSPI_CHSTAT_TXS BIT(1) -#define OMAP3_MCSPI_CHSTAT_EOT BIT(2) - -#define OMAP3_MCSPI_CHCTRL_EN BIT(0) -#define OMAP3_MCSPI_CHCTRL_DIS (0 << 0) - -#define OMAP3_MCSPI_WAKEUPENABLE_WKEN BIT(0) -#define MCSPI_PINDIR_D0_IN_D1_OUT 0 -#define MCSPI_PINDIR_D0_OUT_D1_IN 1 - -#define OMAP3_MCSPI_MAX_FREQ 48000000 -#define SPI_WAIT_TIMEOUT 10 - -/* OMAP3 McSPI registers */ -struct mcspi_channel { - unsigned int chconf; /* 0x2C, 0x40, 0x54, 0x68 */ - unsigned int chstat; /* 0x30, 0x44, 0x58, 0x6C */ - unsigned int chctrl; /* 0x34, 0x48, 0x5C, 0x70 */ - unsigned int tx; /* 0x38, 0x4C, 0x60, 0x74 */ - unsigned int rx; /* 0x3C, 0x50, 0x64, 0x78 */ -}; - -struct mcspi { - unsigned char res1[0x10]; - unsigned int sysconfig; /* 0x10 */ - unsigned int sysstatus; /* 0x14 */ - unsigned int irqstatus; /* 0x18 */ - unsigned int irqenable; /* 0x1C */ - unsigned int wakeupenable; /* 0x20 */ - unsigned int syst; /* 0x24 */ - unsigned int modulctrl; /* 0x28 */ - struct mcspi_channel channel[4]; - /* channel0: 0x2C - 0x3C, bus 0 & 1 & 2 & 3 */ - /* channel1: 0x40 - 0x50, bus 0 & 1 */ - /* channel2: 0x54 - 0x64, bus 0 & 1 */ - /* channel3: 0x68 - 0x78, bus 0 */ -}; - struct omap3_spi_priv { -#ifndef CONFIG_DM_SPI - struct spi_slave slave; -#endif struct mcspi *regs; unsigned int cs; unsigned int freq; @@ -455,128 +374,6 @@ static void _omap3_spi_claim_bus(struct omap3_spi_priv *priv) writel(conf, &priv->regs->modulctrl); } -#ifndef CONFIG_DM_SPI - -static inline struct omap3_spi_priv *to_omap3_spi(struct spi_slave *slave) -{ - return container_of(slave, struct omap3_spi_priv, slave); -} - -void spi_free_slave(struct spi_slave *slave) -{ - struct omap3_spi_priv *priv = to_omap3_spi(slave); - - free(priv); -} - -int spi_claim_bus(struct spi_slave *slave) -{ - struct omap3_spi_priv *priv = to_omap3_spi(slave); - - spi_reset(priv->regs); - - _omap3_spi_claim_bus(priv); - _omap3_spi_set_wordlen(priv); - _omap3_spi_set_mode(priv); - _omap3_spi_set_speed(priv); - - return 0; -} - -void spi_release_bus(struct spi_slave *slave) -{ - struct omap3_spi_priv *priv = to_omap3_spi(slave); - - writel(OMAP3_MCSPI_MODULCTRL_MS, &priv->regs->modulctrl); -} - -struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, - unsigned int max_hz, unsigned int mode) -{ - struct omap3_spi_priv *priv; - struct mcspi *regs; - - /* - * OMAP3 McSPI (MultiChannel SPI) has 4 busses (modules) - * with different number of chip selects (CS, channels): - * McSPI1 has 4 CS (bus 0, cs 0 - 3) - * McSPI2 has 2 CS (bus 1, cs 0 - 1) - * McSPI3 has 2 CS (bus 2, cs 0 - 1) - * McSPI4 has 1 CS (bus 3, cs 0) - */ - - switch (bus) { - case 0: - regs = (struct mcspi *)OMAP3_MCSPI1_BASE; - break; -#ifdef OMAP3_MCSPI2_BASE - case 1: - regs = (struct mcspi *)OMAP3_MCSPI2_BASE; - break; -#endif -#ifdef OMAP3_MCSPI3_BASE - case 2: - regs = (struct mcspi *)OMAP3_MCSPI3_BASE; - break; -#endif -#ifdef OMAP3_MCSPI4_BASE - case 3: - regs = (struct mcspi *)OMAP3_MCSPI4_BASE; - break; -#endif - default: - printf("SPI error: unsupported bus %i. Supported busses 0 - 3\n", bus); - return NULL; - } - - if (((bus == 0) && (cs > 3)) || - ((bus == 1) && (cs > 1)) || - ((bus == 2) && (cs > 1)) || - ((bus == 3) && (cs > 0))) { - printf("SPI error: unsupported chip select %i on bus %i\n", cs, bus); - return NULL; - } - - if (max_hz > OMAP3_MCSPI_MAX_FREQ) { - printf("SPI error: unsupported frequency %i Hz. Max frequency is 48 MHz\n", - max_hz); - return NULL; - } - - if (mode > SPI_MODE_3) { - printf("SPI error: unsupported SPI mode %i\n", mode); - return NULL; - } - - priv = spi_alloc_slave(struct omap3_spi_priv, bus, cs); - if (!priv) { - printf("SPI error: malloc of SPI structure failed\n"); - return NULL; - } - - priv->regs = regs; - priv->cs = cs; - priv->freq = max_hz; - priv->mode = mode; - priv->wordlen = priv->slave.wordlen; -#if 0 - /* Please migrate to DM_SPI support for this feature. */ - priv->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN; -#endif - - return &priv->slave; -} - -int spi_xfer(struct spi_slave *slave, unsigned int bitlen, - const void *dout, void *din, unsigned long flags) -{ - struct omap3_spi_priv *priv = to_omap3_spi(slave); - - return _spi_xfer(priv, bitlen, dout, din, flags); -} - -#else - static int omap3_spi_claim_bus(struct udevice *dev) { struct udevice *bus = dev->parent; @@ -617,17 +414,10 @@ static int omap3_spi_set_wordlen(struct udevice *dev, unsigned int wordlen) static int omap3_spi_probe(struct udevice *dev) { struct omap3_spi_priv *priv = dev_get_priv(dev); - const void *blob = gd->fdt_blob; - int node = dev_of_offset(dev); + struct omap3_spi_plat *plat = dev_get_platdata(dev); - struct omap2_mcspi_platform_config* data = - (struct omap2_mcspi_platform_config*)dev_get_driver_data(dev); - - priv->regs = (struct mcspi *)(devfdt_get_addr(dev) + data->regs_offset); - if (fdtdec_get_bool(blob, node, "ti,pindir-d0-out-d1-in")) - priv->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN; - else - priv->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT; + priv->regs = plat->regs; + priv->pin_dir = plat->pin_dir; priv->wordlen = SPI_DEFAULT_WORDLEN; spi_reset(priv->regs); @@ -679,6 +469,7 @@ static const struct dm_spi_ops omap3_spi_ops = { */ }; +#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) static struct omap2_mcspi_platform_config omap2_pdata = { .regs_offset = 0, }; @@ -687,18 +478,38 @@ static struct omap2_mcspi_platform_config omap4_pdata = { .regs_offset = OMAP4_MCSPI_REG_OFFSET, }; +static int omap3_spi_ofdata_to_platdata(struct udevice *dev) +{ + struct omap2_mcspi_platform_config *data = + (struct omap2_mcspi_platform_config *)dev_get_driver_data(dev); + struct omap3_spi_plat *plat = dev_get_platdata(dev); + + plat->regs = (struct mcspi *)(dev_read_addr(dev) + data->regs_offset); + + if (dev_read_bool(dev, "ti,pindir-d0-out-d1-in")) + plat->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN; + else + plat->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT; + + return 0; +} + static const struct udevice_id omap3_spi_ids[] = { { .compatible = "ti,omap2-mcspi", .data = (ulong)&omap2_pdata }, { .compatible = "ti,omap4-mcspi", .data = (ulong)&omap4_pdata }, { } }; - +#endif U_BOOT_DRIVER(omap3_spi) = { .name = "omap3_spi", .id = UCLASS_SPI, + .flags = DM_FLAG_PRE_RELOC, +#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) .of_match = omap3_spi_ids, + .ofdata_to_platdata = omap3_spi_ofdata_to_platdata, + .platdata_auto = sizeof(struct omap3_spi_plat), +#endif .probe = omap3_spi_probe, .ops = &omap3_spi_ops, - .priv_auto_alloc_size = sizeof(struct omap3_spi_priv), + .priv_auto = sizeof(struct omap3_spi_priv), }; -#endif