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authorEric Nelson <eric.nelson@boundarydevices.com>2012-01-31 07:52:03 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-27 21:19:23 +0100
commit08c61a589b75154e274394972acffe71dbdb75c1 (patch)
treee170008e780d12ab3d8f37a4892d6211efb59c9f /drivers/spi
parent4b3a30e9ae304f1350d7dc17b3e0d2ef90e2b668 (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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/mxc_spi.c93
1 files changed, 6 insertions, 87 deletions
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(&regs->ctrl, mxcs->ctrl_reg | MXC_CSPICTRL_EN);
-#ifdef CONFIG_MX51
+#ifdef MXC_ECSPI
reg_write(&regs->cfg, mxcs->cfg_reg);
#endif