From 08c61a589b75154e274394972acffe71dbdb75c1 Mon Sep 17 00:00:00 2001 From: Eric Nelson Date: Tue, 31 Jan 2012 07:52:03 +0000 Subject: 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 Acked-by: Dirk Behme Acked-by: Stefano Babic Acked-by: Jason Liu Tested-by: Jason Liu --- drivers/spi/mxc_spi.c | 93 ++++----------------------------------------------- 1 file changed, 6 insertions(+), 87 deletions(-) (limited to 'drivers/spi/mxc_spi.c') diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index 2fa748608f..2e1531858d 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 -- cgit v1.2.1