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linux-pinenote/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h

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MIPS: BCM63xx: Add stub to register the SPI platform driver This patch adds the necessary stub to register the SPI platform driver. Since the registers are shuffled between the 4 BCM63xx CPUs supported by this SPI driver we also need to generate the internal register layout and export this layout for the driver to use it properly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: grant.likely@secretlab.ca Cc: spi-devel-general@lists.sourceforge.net Patchwork: https://patchwork.linux-mips.org/patch/3321/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-04 16:58:36 +02:00
#ifndef BCM63XX_DEV_SPI_H
#define BCM63XX_DEV_SPI_H
#include <linux/types.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
int __init bcm63xx_spi_register(void);
struct bcm63xx_spi_pdata {
unsigned int fifo_size;
MIPS: BCM63xx: Fix SPI message control register handling for BCM6338/6348. BCM6338 and BCM6348 have a message control register width of 8 bits, instead of 16-bits like what the SPI driver assumes right now. Also the SPI message type shift value of 14 is actually 6 for these SoCs. This resulted in transmit FIFO corruption because we were writing 16-bits to an 8-bits wide register, thus spanning on the first byte of the transmit FIFO, which had already been filed in bcm63xx_spi_fill_txrx_fifo(). Fix this by passing the message control register width and message type shift through platform data back to the SPI driver so that it can use it properly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: grant.likely@secretlab.ca Cc: spi-devel-general@lists.sourceforge.net Cc: jonas.gorski@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/3983/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-06-18 12:07:51 +02:00
unsigned int msg_type_shift;
unsigned int msg_ctl_width;
MIPS: BCM63xx: Add stub to register the SPI platform driver This patch adds the necessary stub to register the SPI platform driver. Since the registers are shuffled between the 4 BCM63xx CPUs supported by this SPI driver we also need to generate the internal register layout and export this layout for the driver to use it properly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: grant.likely@secretlab.ca Cc: spi-devel-general@lists.sourceforge.net Patchwork: https://patchwork.linux-mips.org/patch/3321/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-04 16:58:36 +02:00
int bus_num;
int num_chipselect;
};
enum bcm63xx_regs_spi {
SPI_CMD,
SPI_INT_STATUS,
SPI_INT_MASK_ST,
SPI_INT_MASK,
SPI_ST,
SPI_CLK_CFG,
SPI_FILL_BYTE,
SPI_MSG_TAIL,
SPI_RX_TAIL,
SPI_MSG_CTL,
SPI_MSG_DATA,
SPI_RX_DATA,
};
#define __GEN_SPI_RSET_BASE(__cpu, __rset) \
case SPI_## __rset: \
return SPI_## __cpu ##_## __rset;
#define __GEN_SPI_RSET(__cpu) \
switch (reg) { \
__GEN_SPI_RSET_BASE(__cpu, CMD) \
__GEN_SPI_RSET_BASE(__cpu, INT_STATUS) \
__GEN_SPI_RSET_BASE(__cpu, INT_MASK_ST) \
__GEN_SPI_RSET_BASE(__cpu, INT_MASK) \
__GEN_SPI_RSET_BASE(__cpu, ST) \
__GEN_SPI_RSET_BASE(__cpu, CLK_CFG) \
__GEN_SPI_RSET_BASE(__cpu, FILL_BYTE) \
__GEN_SPI_RSET_BASE(__cpu, MSG_TAIL) \
__GEN_SPI_RSET_BASE(__cpu, RX_TAIL) \
__GEN_SPI_RSET_BASE(__cpu, MSG_CTL) \
__GEN_SPI_RSET_BASE(__cpu, MSG_DATA) \
__GEN_SPI_RSET_BASE(__cpu, RX_DATA) \
}
#define __GEN_SPI_REGS_TABLE(__cpu) \
[SPI_CMD] = SPI_## __cpu ##_CMD, \
[SPI_INT_STATUS] = SPI_## __cpu ##_INT_STATUS, \
[SPI_INT_MASK_ST] = SPI_## __cpu ##_INT_MASK_ST, \
[SPI_INT_MASK] = SPI_## __cpu ##_INT_MASK, \
[SPI_ST] = SPI_## __cpu ##_ST, \
[SPI_CLK_CFG] = SPI_## __cpu ##_CLK_CFG, \
[SPI_FILL_BYTE] = SPI_## __cpu ##_FILL_BYTE, \
[SPI_MSG_TAIL] = SPI_## __cpu ##_MSG_TAIL, \
[SPI_RX_TAIL] = SPI_## __cpu ##_RX_TAIL, \
[SPI_MSG_CTL] = SPI_## __cpu ##_MSG_CTL, \
[SPI_MSG_DATA] = SPI_## __cpu ##_MSG_DATA, \
[SPI_RX_DATA] = SPI_## __cpu ##_RX_DATA,
static inline unsigned long bcm63xx_spireg(enum bcm63xx_regs_spi reg)
{
#ifdef BCMCPU_RUNTIME_DETECT
extern const unsigned long *bcm63xx_regs_spi;
return bcm63xx_regs_spi[reg];
#else
MIPS: BCM63XX: remove duplicate spi register definitions BCM6338 and BCM6348, and BCM6358 and everything after that share the same register layout. To not have to redefine them for each new chip and keep the code size small, only use the definitions for the first chip with the certain layout. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5006/ Acked-by: John Crispin <blogic@openwrt.org>
2013-03-21 14:03:14 +00:00
#if defined(CONFIG_BCM63XX_CPU_6338) || defined(CONFIG_BCM63XX_CPU_6348)
MIPS: BCM63xx: Add stub to register the SPI platform driver This patch adds the necessary stub to register the SPI platform driver. Since the registers are shuffled between the 4 BCM63xx CPUs supported by this SPI driver we also need to generate the internal register layout and export this layout for the driver to use it properly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: grant.likely@secretlab.ca Cc: spi-devel-general@lists.sourceforge.net Patchwork: https://patchwork.linux-mips.org/patch/3321/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-04 16:58:36 +02:00
__GEN_SPI_RSET(6348)
#endif
MIPS: BCM63XX: enable SPI controller for BCM6362 The SPI controller shares the same register layout as the 6358 one. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5010/ Acked-by: John Crispin <blogic@openwrt.org>
2013-03-21 14:03:18 +00:00
#if defined(CONFIG_BCM63XX_CPU_6358) || defined(CONFIG_BCM63XX_CPU_6362) || \
defined(CONFIG_BCM63XX_CPU_6368)
MIPS: BCM63xx: Add stub to register the SPI platform driver This patch adds the necessary stub to register the SPI platform driver. Since the registers are shuffled between the 4 BCM63xx CPUs supported by this SPI driver we also need to generate the internal register layout and export this layout for the driver to use it properly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: grant.likely@secretlab.ca Cc: spi-devel-general@lists.sourceforge.net Patchwork: https://patchwork.linux-mips.org/patch/3321/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-04 16:58:36 +02:00
__GEN_SPI_RSET(6358)
#endif
#endif
return 0;
}
#endif /* BCM63XX_DEV_SPI_H */
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