diff options
author | Eric Nelson <eric.nelson@boundarydevices.com> | 2012-01-31 07:52:03 +0000 |
---|---|---|
committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-02-27 21:19:23 +0100 |
commit | 08c61a589b75154e274394972acffe71dbdb75c1 (patch) | |
tree | e170008e780d12ab3d8f37a4892d6211efb59c9f | |
parent | 4b3a30e9ae304f1350d7dc17b3e0d2ef90e2b668 (diff) |
mxc_spi: move machine specifics into CPU headers
Move (E)CSPI register declarations into the imx-regs.h files for each supported CPU
Introduce two new macros to control conditional setup
MXC_CSPI - Used for processors with the Configurable Serial Peripheral Interface (MX3x)
MXC_ECSPI - For processors with Enhanced Configurable... (MX5x, MX6x)
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
-rw-r--r-- | arch/arm/include/asm/arch-mx31/imx-regs.h | 27 | ||||
-rw-r--r-- | arch/arm/include/asm/arch-mx35/imx-regs.h | 25 | ||||
-rw-r--r-- | arch/arm/include/asm/arch-mx5/imx-regs.h | 30 | ||||
-rw-r--r-- | drivers/spi/mxc_spi.c | 93 |
4 files changed, 88 insertions, 87 deletions
diff --git a/arch/arm/include/asm/arch-mx31/imx-regs.h b/arch/arm/include/asm/arch-mx31/imx-regs.h index 798cc746722..6454acbd42c 100644 --- a/arch/arm/include/asm/arch-mx31/imx-regs.h +++ b/arch/arm/include/asm/arch-mx31/imx-regs.h @@ -901,4 +901,31 @@ struct esdc_regs { #define MXC_EHCI_IPPUE_DOWN (1 << 8) #define MXC_EHCI_IPPUE_UP (1 << 9) +/* + * CSPI register definitions + */ +#define MXC_CSPI +#define MXC_CSPICTRL_EN (1 << 0) +#define MXC_CSPICTRL_MODE (1 << 1) +#define MXC_CSPICTRL_XCH (1 << 2) +#define MXC_CSPICTRL_SMC (1 << 3) +#define MXC_CSPICTRL_POL (1 << 4) +#define MXC_CSPICTRL_PHA (1 << 5) +#define MXC_CSPICTRL_SSCTL (1 << 6) +#define MXC_CSPICTRL_SSPOL (1 << 7) +#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 24) +#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0x1f) << 8) +#define MXC_CSPICTRL_DATARATE(x) (((x) & 0x7) << 16) +#define MXC_CSPICTRL_TC (1 << 8) +#define MXC_CSPICTRL_RXOVF (1 << 6) +#define MXC_CSPICTRL_MAXBITS 0x1f + +#define MXC_CSPIPERIOD_32KHZ (1 << 15) +#define MAX_SPI_BYTES 4 + +#define MXC_SPI_BASE_ADDRESSES \ + 0x43fa4000, \ + 0x50010000, \ + 0x53f84000, + #endif /* __ASM_ARCH_MX31_IMX_REGS_H */ diff --git a/arch/arm/include/asm/arch-mx35/imx-regs.h b/arch/arm/include/asm/arch-mx35/imx-regs.h index df74508a93e..e570ad1e36e 100644 --- a/arch/arm/include/asm/arch-mx35/imx-regs.h +++ b/arch/arm/include/asm/arch-mx35/imx-regs.h @@ -179,6 +179,31 @@ #define IPU_CONF_IC_EN (1<<1) #define IPU_CONF_SCI_EN (1<<0) +/* + * CSPI register definitions + */ +#define MXC_CSPI +#define MXC_CSPICTRL_EN (1 << 0) +#define MXC_CSPICTRL_MODE (1 << 1) +#define MXC_CSPICTRL_XCH (1 << 2) +#define MXC_CSPICTRL_SMC (1 << 3) +#define MXC_CSPICTRL_POL (1 << 4) +#define MXC_CSPICTRL_PHA (1 << 5) +#define MXC_CSPICTRL_SSCTL (1 << 6) +#define MXC_CSPICTRL_SSPOL (1 << 7) +#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 12) +#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0xfff) << 20) +#define MXC_CSPICTRL_DATARATE(x) (((x) & 0x7) << 16) +#define MXC_CSPICTRL_TC (1 << 7) +#define MXC_CSPICTRL_RXOVF (1 << 6) +#define MXC_CSPICTRL_MAXBITS 0xfff +#define MXC_CSPIPERIOD_32KHZ (1 << 15) +#define MAX_SPI_BYTES 4 + +#define MXC_SPI_BASE_ADDRESSES \ + 0x43fa4000, \ + 0x50010000, + #define GPIO_PORT_NUM 3 #define GPIO_NUM_PIN 32 diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h index 0ee88d25b78..4fa66587a0b 100644 --- a/arch/arm/include/asm/arch-mx5/imx-regs.h +++ b/arch/arm/include/asm/arch-mx5/imx-regs.h @@ -223,6 +223,36 @@ #define CS0_32M_CS1_32M_CS2_32M_CS3_32M 3 /* + * CSPI register definitions + */ +#define MXC_ECSPI +#define MXC_CSPICTRL_EN (1 << 0) +#define MXC_CSPICTRL_MODE (1 << 1) +#define MXC_CSPICTRL_XCH (1 << 2) +#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 12) +#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0xfff) << 20) +#define MXC_CSPICTRL_PREDIV(x) (((x) & 0xF) << 12) +#define MXC_CSPICTRL_POSTDIV(x) (((x) & 0xF) << 8) +#define MXC_CSPICTRL_SELCHAN(x) (((x) & 0x3) << 18) +#define MXC_CSPICTRL_MAXBITS 0xfff +#define MXC_CSPICTRL_TC (1 << 7) +#define MXC_CSPICTRL_RXOVF (1 << 6) +#define MXC_CSPIPERIOD_32KHZ (1 << 15) +#define MAX_SPI_BYTES 32 + +/* Bit position inside CTRL register to be associated with SS */ +#define MXC_CSPICTRL_CHAN 18 + +/* Bit position inside CON register to be associated with SS */ +#define MXC_CSPICON_POL 4 +#define MXC_CSPICON_PHA 0 +#define MXC_CSPICON_SSPOL 12 +#define MXC_SPI_BASE_ADDRESSES \ + CSPI1_BASE_ADDR, \ + CSPI2_BASE_ADDR, \ + CSPI3_BASE_ADDR, + +/* * Number of GPIO pins per port */ #define GPIO_NUM_PIN 32 diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index 2fa748608f2..2e1531858d3 100644 --- a/drivers/spi/mxc_spi.c +++ b/drivers/spi/mxc_spi.c @@ -33,93 +33,12 @@ #error "i.MX27 CSPI not supported due to drastic differences in register definitions" \ "See linux mxc_spi driver from Freescale for details." - -#elif defined(CONFIG_MX31) - -#define MXC_CSPICTRL_EN (1 << 0) -#define MXC_CSPICTRL_MODE (1 << 1) -#define MXC_CSPICTRL_XCH (1 << 2) -#define MXC_CSPICTRL_SMC (1 << 3) -#define MXC_CSPICTRL_POL (1 << 4) -#define MXC_CSPICTRL_PHA (1 << 5) -#define MXC_CSPICTRL_SSCTL (1 << 6) -#define MXC_CSPICTRL_SSPOL (1 << 7) -#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 24) -#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0x1f) << 8) -#define MXC_CSPICTRL_DATARATE(x) (((x) & 0x7) << 16) -#define MXC_CSPICTRL_TC (1 << 8) -#define MXC_CSPICTRL_RXOVF (1 << 6) -#define MXC_CSPICTRL_MAXBITS 0x1f - -#define MXC_CSPIPERIOD_32KHZ (1 << 15) -#define MAX_SPI_BYTES 4 - -static unsigned long spi_bases[] = { - 0x43fa4000, - 0x50010000, - 0x53f84000, -}; - -#elif defined(CONFIG_MX51) - -#define MXC_CSPICTRL_EN (1 << 0) -#define MXC_CSPICTRL_MODE (1 << 1) -#define MXC_CSPICTRL_XCH (1 << 2) -#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 12) -#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0xfff) << 20) -#define MXC_CSPICTRL_PREDIV(x) (((x) & 0xF) << 12) -#define MXC_CSPICTRL_POSTDIV(x) (((x) & 0xF) << 8) -#define MXC_CSPICTRL_SELCHAN(x) (((x) & 0x3) << 18) -#define MXC_CSPICTRL_MAXBITS 0xfff -#define MXC_CSPICTRL_TC (1 << 7) -#define MXC_CSPICTRL_RXOVF (1 << 6) - -#define MXC_CSPIPERIOD_32KHZ (1 << 15) -#define MAX_SPI_BYTES 32 - -/* Bit position inside CTRL register to be associated with SS */ -#define MXC_CSPICTRL_CHAN 18 - -/* Bit position inside CON register to be associated with SS */ -#define MXC_CSPICON_POL 4 -#define MXC_CSPICON_PHA 0 -#define MXC_CSPICON_SSPOL 12 - -static unsigned long spi_bases[] = { - CSPI1_BASE_ADDR, - CSPI2_BASE_ADDR, - CSPI3_BASE_ADDR, -}; - -#elif defined(CONFIG_MX35) - -#define MXC_CSPICTRL_EN (1 << 0) -#define MXC_CSPICTRL_MODE (1 << 1) -#define MXC_CSPICTRL_XCH (1 << 2) -#define MXC_CSPICTRL_SMC (1 << 3) -#define MXC_CSPICTRL_POL (1 << 4) -#define MXC_CSPICTRL_PHA (1 << 5) -#define MXC_CSPICTRL_SSCTL (1 << 6) -#define MXC_CSPICTRL_SSPOL (1 << 7) -#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 12) -#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0xfff) << 20) -#define MXC_CSPICTRL_DATARATE(x) (((x) & 0x7) << 16) -#define MXC_CSPICTRL_TC (1 << 7) -#define MXC_CSPICTRL_RXOVF (1 << 6) -#define MXC_CSPICTRL_MAXBITS 0xfff - -#define MXC_CSPIPERIOD_32KHZ (1 << 15) -#define MAX_SPI_BYTES 4 +#endif static unsigned long spi_bases[] = { - 0x43fa4000, - 0x50010000, + MXC_SPI_BASE_ADDRESSES }; -#else -#error "Unsupported architecture" -#endif - #define OUT MXC_GPIO_DIRECTION_OUT #define reg_read readl @@ -129,7 +48,7 @@ struct mxc_spi_slave { struct spi_slave slave; unsigned long base; u32 ctrl_reg; -#if defined(CONFIG_MX51) +#if defined(MXC_ECSPI) u32 cfg_reg; #endif int gpio; @@ -167,7 +86,7 @@ u32 get_cspi_div(u32 div) return i; } -#if defined(CONFIG_MX31) || defined(CONFIG_MX35) +#ifdef MXC_CSPI static s32 spi_cfg_mxc(struct mxc_spi_slave *mxcs, unsigned int cs, unsigned int max_hz, unsigned int mode) { @@ -204,7 +123,7 @@ static s32 spi_cfg_mxc(struct mxc_spi_slave *mxcs, unsigned int cs, } #endif -#if defined(CONFIG_MX51) +#ifdef MXC_ECSPI static s32 spi_cfg_mxc(struct mxc_spi_slave *mxcs, unsigned int cs, unsigned int max_hz, unsigned int mode) { @@ -316,7 +235,7 @@ int spi_xchg_single(struct spi_slave *slave, unsigned int bitlen, MXC_CSPICTRL_BITCOUNT(bitlen - 1); reg_write(®s->ctrl, mxcs->ctrl_reg | MXC_CSPICTRL_EN); -#ifdef CONFIG_MX51 +#ifdef MXC_ECSPI reg_write(®s->cfg, mxcs->cfg_reg); #endif |