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fix SPI message control handling for BCM6338/6348

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BCM6338 and BCM6338 have their MSG_CONTROL register width of 8-bits instead of
16-bits. We were previously using a 16-bits write which corrupted the first
byte of the TX FIFO. Also the message type was always set to Full-duplex even
in the case of half-duplex messages.

SVN-Revision: 32409
This commit is contained in:
Florian Fainelli
2012-06-17 16:17:29 +00:00
parent 89701ec518
commit b89c81929e
5 changed files with 133 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

128
target/linux/brcm63xx/patches-3.3/016-spi-bcm63xx-fix-bcm6348-38.patch Normal file
View File

@@ -0,0 +1,128 @@
--- a/arch/mips/bcm63xx/dev-spi.c
+++ b/arch/mips/bcm63xx/dev-spi.c
@@ -106,11 +106,15 @@ int __init bcm63xx_spi_register(void)
if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
spi_resources[0].end += BCM_6338_RSET_SPI_SIZE - 1;
spi_pdata.fifo_size = SPI_6338_MSG_DATA_SIZE;
+ spi_pdata.msg_type_shift = SPI_6338_MSG_TYPE_SHIFT;
+ spi_pdata.msg_ctl_width = SPI_6338_MSG_CTL_WIDTH;
}
if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE;
+ spi_pdata.msg_type_shift = SPI_6358_MSG_TYPE_SHIFT;
+ spi_pdata.msg_ctl_width = SPI_6358_MSG_CTL_WIDTH;
}
bcm63xx_spi_regs_init();
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
@@ -9,6 +9,8 @@ int __init bcm63xx_spi_register(void);
struct bcm63xx_spi_pdata {
unsigned int fifo_size;
+ unsigned int msg_type_shift;
+ unsigned int msg_ctl_width;
int bus_num;
int num_chipselect;
u32 speed_hz;
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -987,7 +987,8 @@
#define SPI_6338_FILL_BYTE 0x07
#define SPI_6338_MSG_TAIL 0x09
#define SPI_6338_RX_TAIL 0x0b
-#define SPI_6338_MSG_CTL 0x40
+#define SPI_6338_MSG_CTL 0x40 /* 8-bits register */
+#define SPI_6338_MSG_CTL_WIDTH 8
#define SPI_6338_MSG_DATA 0x41
#define SPI_6338_MSG_DATA_SIZE 0x3f
#define SPI_6338_RX_DATA 0x80
@@ -1003,7 +1004,8 @@
#define SPI_6348_FILL_BYTE 0x07
#define SPI_6348_MSG_TAIL 0x09
#define SPI_6348_RX_TAIL 0x0b
-#define SPI_6348_MSG_CTL 0x40
+#define SPI_6348_MSG_CTL 0x40 /* 8-bits register */
+#define SPI_6348_MSG_CTL_WIDTH 8
#define SPI_6348_MSG_DATA 0x41
#define SPI_6348_MSG_DATA_SIZE 0x3f
#define SPI_6348_RX_DATA 0x80
@@ -1011,6 +1013,7 @@
/* BCM 6358 SPI core */
#define SPI_6358_MSG_CTL 0x00 /* 16-bits register */
+#define SPI_6358_MSG_CTL_WIDTH 16
#define SPI_6358_MSG_DATA 0x02
#define SPI_6358_MSG_DATA_SIZE 0x21e
#define SPI_6358_RX_DATA 0x400
@@ -1027,6 +1030,7 @@
/* BCM 6358 SPI core */
#define SPI_6368_MSG_CTL 0x00 /* 16-bits register */
+#define SPI_6368_MSG_CTL_WIDTH 16
#define SPI_6368_MSG_DATA 0x02
#define SPI_6368_MSG_DATA_SIZE 0x21e
#define SPI_6368_RX_DATA 0x400
@@ -1048,7 +1052,10 @@
#define SPI_HD_W 0x01
#define SPI_HD_R 0x02
#define SPI_BYTE_CNT_SHIFT 0
-#define SPI_MSG_TYPE_SHIFT 14
+#define SPI_6338_MSG_TYPE_SHIFT 6
+#define SPI_6348_MSG_TYPE_SHIFT 6
+#define SPI_6358_MSG_TYPE_SHIFT 14
+#define SPI_6368_MSG_TYPE_SHIFT 14
/* Command */
#define SPI_CMD_NOOP 0x00
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -47,6 +47,8 @@ struct bcm63xx_spi {
/* Platform data */
u32 speed_hz;
unsigned fifo_size;
+ unsigned int msg_type_shift;
+ unsigned int msg_ctl_width;
/* Data buffers */
const unsigned char *tx_ptr;
@@ -221,13 +223,24 @@ static unsigned int bcm63xx_txrx_bufs(st
msg_ctl = (t->len << SPI_BYTE_CNT_SHIFT);
if (t->rx_buf && t->tx_buf)
- msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT);
+ msg_ctl |= (SPI_FD_RW << bs->msg_type_shift);
else if (t->rx_buf)
- msg_ctl |= (SPI_HD_R << SPI_MSG_TYPE_SHIFT);
+ msg_ctl |= (SPI_HD_R << bs->msg_type_shift);
else if (t->tx_buf)
- msg_ctl |= (SPI_HD_W << SPI_MSG_TYPE_SHIFT);
+ msg_ctl |= (SPI_HD_W << bs->msg_type_shift);
- bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL);
+ switch (bs->msg_ctl_width) {
+ case 8:
+ bcm_spi_writeb(bs, msg_ctl, SPI_MSG_CTL);
+ break;
+ case 16:
+ bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL);
+ break;
+ default:
+ dev_err(&spi->dev, "unknown MSG_CTL width: %d\n",
+ bs->msg_ctl_width);
+ return 0;
+ }
/* Issue the transfer */
cmd = SPI_CMD_START_IMMEDIATE;
@@ -406,6 +419,8 @@ static int __devinit bcm63xx_spi_probe(s
master->transfer_one_message = bcm63xx_spi_transfer_one;
master->mode_bits = MODEBITS;
bs->speed_hz = pdata->speed_hz;
+ bs->msg_type_shift = pdata->msg_type_shift;
+ bs->msg_ctl_width = pdata->msg_ctl_width;
bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));

2
target/linux/brcm63xx/patches-3.3/103-MIPS-BCM63XX-add-TRNG-peripheral-definitions.patch
View File

@@ -85,7 +85,7 @@ Signed-off-by: Florian Fainelli <florian@openwrt.org>
static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1092,4 +1092,18 @@
@@ -1099,4 +1099,18 @@
#define SPI_SSOFFTIME_SHIFT 3
#define SPI_BYTE_SWAP 0x80

2
target/linux/brcm63xx/patches-3.3/311-MIPS-BCM63XX-add-MISC-register-set-definition.patch
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@@ -90,7 +90,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
#endif /* ! BCM63XX_IO_H_ */
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1116,4 +1116,14 @@
@@ -1123,4 +1123,14 @@
#define TRNG_THRES 0x0c
#define TRNG_MASK 0x10

4
target/linux/brcm63xx/patches-3.3/316-MIPS-BCM63XX-Add-PCIe-register-set-definitions.patch
View File

@@ -108,7 +108,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
#define bcm_memc_readl(o) bcm_rset_readl(RSET_MEMC, (o))
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1163,6 +1163,9 @@
@@ -1170,6 +1170,9 @@
/*************************************************************************
* _REG relative to RSET_MISC
*************************************************************************/
@@ -118,7 +118,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
#define MISC_STRAPBUS_6328_REG 0x240
#define STRAPBUS_6328_FCVO_SHIFT 7
@@ -1170,4 +1173,55 @@
@@ -1177,4 +1180,55 @@
#define STRAPBUS_6328_BOOT_SEL_SERIAL (1 << 28)
#define STRAPBUS_6328_BOOT_SEL_NAND (0 << 28)

2
target/linux/brcm63xx/patches-3.3/419-SPI-MIPS-BCM63XX-Add-HS-SPI-driver.patch
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@@ -174,7 +174,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
#endif /* BCM63XX_DEV_HSSPI_H */
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1276,4 +1276,51 @@
@@ -1283,4 +1283,51 @@
#define PCIE_DEVICE_OFFSET 0x8000