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-rw-r--r--drivers/spi/Kconfig2
-rw-r--r--drivers/spi/spi-bcm63xx.c197
2 files changed, 175 insertions, 24 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 4887f317ea58..5c1db987beff 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -125,7 +125,7 @@ config SPI_BCM53XX
config SPI_BCM63XX
tristate "Broadcom BCM63xx SPI controller"
- depends on BCM63XX
+ depends on BCM63XX || COMPILE_TEST
help
Enable support for the SPI controller on the Broadcom BCM63xx SoCs.
diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c
index b3da04494fa9..06858e04ec59 100644
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -27,7 +27,111 @@
#include <linux/err.h>
#include <linux/pm_runtime.h>
-#include <bcm63xx_dev_spi.h>
+/* BCM 6338/6348 SPI core */
+#define SPI_6348_RSET_SIZE 64
+#define SPI_6348_CMD 0x00 /* 16-bits register */
+#define SPI_6348_INT_STATUS 0x02
+#define SPI_6348_INT_MASK_ST 0x03
+#define SPI_6348_INT_MASK 0x04
+#define SPI_6348_ST 0x05
+#define SPI_6348_CLK_CFG 0x06
+#define SPI_6348_FILL_BYTE 0x07
+#define SPI_6348_MSG_TAIL 0x09
+#define SPI_6348_RX_TAIL 0x0b
+#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
+#define SPI_6348_RX_DATA_SIZE 0x3f
+
+/* BCM 3368/6358/6262/6368 SPI core */
+#define SPI_6358_RSET_SIZE 1804
+#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
+#define SPI_6358_RX_DATA_SIZE 0x220
+#define SPI_6358_CMD 0x700 /* 16-bits register */
+#define SPI_6358_INT_STATUS 0x702
+#define SPI_6358_INT_MASK_ST 0x703
+#define SPI_6358_INT_MASK 0x704
+#define SPI_6358_ST 0x705
+#define SPI_6358_CLK_CFG 0x706
+#define SPI_6358_FILL_BYTE 0x707
+#define SPI_6358_MSG_TAIL 0x709
+#define SPI_6358_RX_TAIL 0x70B
+
+/* Shared SPI definitions */
+
+/* Message configuration */
+#define SPI_FD_RW 0x00
+#define SPI_HD_W 0x01
+#define SPI_HD_R 0x02
+#define SPI_BYTE_CNT_SHIFT 0
+#define SPI_6348_MSG_TYPE_SHIFT 6
+#define SPI_6358_MSG_TYPE_SHIFT 14
+
+/* Command */
+#define SPI_CMD_NOOP 0x00
+#define SPI_CMD_SOFT_RESET 0x01
+#define SPI_CMD_HARD_RESET 0x02
+#define SPI_CMD_START_IMMEDIATE 0x03
+#define SPI_CMD_COMMAND_SHIFT 0
+#define SPI_CMD_COMMAND_MASK 0x000f
+#define SPI_CMD_DEVICE_ID_SHIFT 4
+#define SPI_CMD_PREPEND_BYTE_CNT_SHIFT 8
+#define SPI_CMD_ONE_BYTE_SHIFT 11
+#define SPI_CMD_ONE_WIRE_SHIFT 12
+#define SPI_DEV_ID_0 0
+#define SPI_DEV_ID_1 1
+#define SPI_DEV_ID_2 2
+#define SPI_DEV_ID_3 3
+
+/* Interrupt mask */
+#define SPI_INTR_CMD_DONE 0x01
+#define SPI_INTR_RX_OVERFLOW 0x02
+#define SPI_INTR_TX_UNDERFLOW 0x04
+#define SPI_INTR_TX_OVERFLOW 0x08
+#define SPI_INTR_RX_UNDERFLOW 0x10
+#define SPI_INTR_CLEAR_ALL 0x1f
+
+/* Status */
+#define SPI_RX_EMPTY 0x02
+#define SPI_CMD_BUSY 0x04
+#define SPI_SERIAL_BUSY 0x08
+
+/* Clock configuration */
+#define SPI_CLK_20MHZ 0x00
+#define SPI_CLK_0_391MHZ 0x01
+#define SPI_CLK_0_781MHZ 0x02 /* default */
+#define SPI_CLK_1_563MHZ 0x03
+#define SPI_CLK_3_125MHZ 0x04
+#define SPI_CLK_6_250MHZ 0x05
+#define SPI_CLK_12_50MHZ 0x06
+#define SPI_CLK_MASK 0x07
+#define SPI_SSOFFTIME_MASK 0x38
+#define SPI_SSOFFTIME_SHIFT 3
+#define SPI_BYTE_SWAP 0x80
+
+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,
+ SPI_MSG_TYPE_SHIFT,
+ SPI_MSG_CTL_WIDTH,
+ SPI_MSG_DATA_SIZE,
+};
#define BCM63XX_SPI_MAX_PREPEND 15
@@ -41,6 +145,7 @@ struct bcm63xx_spi {
int irq;
/* Platform data */
+ const unsigned long *reg_offsets;
unsigned fifo_size;
unsigned int msg_type_shift;
unsigned int msg_ctl_width;
@@ -54,34 +159,34 @@ struct bcm63xx_spi {
};
static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs,
- unsigned int offset)
+ unsigned int offset)
{
- return readb(bs->regs + bcm63xx_spireg(offset));
+ return readb(bs->regs + bs->reg_offsets[offset]);
}
static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs,
unsigned int offset)
{
#ifdef CONFIG_CPU_BIG_ENDIAN
- return ioread16be(bs->regs + bcm63xx_spireg(offset));
+ return ioread16be(bs->regs + bs->reg_offsets[offset]);
#else
- return readw(bs->regs + bcm63xx_spireg(offset));
+ return readw(bs->regs + bs->reg_offsets[offset]);
#endif
}
static inline void bcm_spi_writeb(struct bcm63xx_spi *bs,
u8 value, unsigned int offset)
{
- writeb(value, bs->regs + bcm63xx_spireg(offset));
+ writeb(value, bs->regs + bs->reg_offsets[offset]);
}
static inline void bcm_spi_writew(struct bcm63xx_spi *bs,
u16 value, unsigned int offset)
{
#ifdef CONFIG_CPU_BIG_ENDIAN
- iowrite16be(value, bs->regs + bcm63xx_spireg(offset));
+ iowrite16be(value, bs->regs + bs->reg_offsets[offset]);
#else
- writew(value, bs->regs + bcm63xx_spireg(offset));
+ writew(value, bs->regs + bs->reg_offsets[offset]);
#endif
}
@@ -324,10 +429,59 @@ static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static const unsigned long bcm6348_spi_reg_offsets[] = {
+ [SPI_CMD] = SPI_6348_CMD,
+ [SPI_INT_STATUS] = SPI_6348_INT_STATUS,
+ [SPI_INT_MASK_ST] = SPI_6348_INT_MASK_ST,
+ [SPI_INT_MASK] = SPI_6348_INT_MASK,
+ [SPI_ST] = SPI_6348_ST,
+ [SPI_CLK_CFG] = SPI_6348_CLK_CFG,
+ [SPI_FILL_BYTE] = SPI_6348_FILL_BYTE,
+ [SPI_MSG_TAIL] = SPI_6348_MSG_TAIL,
+ [SPI_RX_TAIL] = SPI_6348_RX_TAIL,
+ [SPI_MSG_CTL] = SPI_6348_MSG_CTL,
+ [SPI_MSG_DATA] = SPI_6348_MSG_DATA,
+ [SPI_RX_DATA] = SPI_6348_RX_DATA,
+ [SPI_MSG_TYPE_SHIFT] = SPI_6348_MSG_TYPE_SHIFT,
+ [SPI_MSG_CTL_WIDTH] = SPI_6348_MSG_CTL_WIDTH,
+ [SPI_MSG_DATA_SIZE] = SPI_6348_MSG_DATA_SIZE,
+};
+
+static const unsigned long bcm6358_spi_reg_offsets[] = {
+ [SPI_CMD] = SPI_6358_CMD,
+ [SPI_INT_STATUS] = SPI_6358_INT_STATUS,
+ [SPI_INT_MASK_ST] = SPI_6358_INT_MASK_ST,
+ [SPI_INT_MASK] = SPI_6358_INT_MASK,
+ [SPI_ST] = SPI_6358_ST,
+ [SPI_CLK_CFG] = SPI_6358_CLK_CFG,
+ [SPI_FILL_BYTE] = SPI_6358_FILL_BYTE,
+ [SPI_MSG_TAIL] = SPI_6358_MSG_TAIL,
+ [SPI_RX_TAIL] = SPI_6358_RX_TAIL,
+ [SPI_MSG_CTL] = SPI_6358_MSG_CTL,
+ [SPI_MSG_DATA] = SPI_6358_MSG_DATA,
+ [SPI_RX_DATA] = SPI_6358_RX_DATA,
+ [SPI_MSG_TYPE_SHIFT] = SPI_6358_MSG_TYPE_SHIFT,
+ [SPI_MSG_CTL_WIDTH] = SPI_6358_MSG_CTL_WIDTH,
+ [SPI_MSG_DATA_SIZE] = SPI_6358_MSG_DATA_SIZE,
+};
+
+static const struct platform_device_id bcm63xx_spi_dev_match[] = {
+ {
+ .name = "bcm6348-spi",
+ .driver_data = (unsigned long)bcm6348_spi_reg_offsets,
+ },
+ {
+ .name = "bcm6358-spi",
+ .driver_data = (unsigned long)bcm6358_spi_reg_offsets,
+ },
+ {
+ },
+};
static int bcm63xx_spi_probe(struct platform_device *pdev)
{
struct resource *r;
+ const unsigned long *bcm63xx_spireg;
struct device *dev = &pdev->dev;
int irq;
struct spi_master *master;
@@ -335,6 +489,11 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
struct bcm63xx_spi *bs;
int ret;
+ if (!pdev->id_entry->driver_data)
+ return -EINVAL;
+
+ bcm63xx_spireg = (const unsigned long *)pdev->id_entry->driver_data;
+
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "no irq\n");
@@ -368,7 +527,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
bs->irq = irq;
bs->clk = clk;
- bs->fifo_size = bcm63xx_spireg(SPI_MSG_DATA_SIZE);
+ bs->reg_offsets = bcm63xx_spireg;
+ bs->fifo_size = bs->reg_offsets[SPI_MSG_DATA_SIZE];
ret = devm_request_irq(&pdev->dev, irq, bcm63xx_spi_interrupt, 0,
pdev->name, master);
@@ -383,20 +543,10 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
master->mode_bits = MODEBITS;
master->bits_per_word_mask = SPI_BPW_MASK(8);
master->auto_runtime_pm = true;
- bs->msg_type_shift = bcm63xx_spireg(SPI_MSG_TYPE_SHIFT);
- bs->msg_ctl_width = bcm63xx_spireg(SPI_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));
-
- switch (bs->msg_ctl_width) {
- case 8:
- case 16:
- break;
- default:
- dev_err(dev, "unsupported MSG_CTL width: %d\n",
- bs->msg_ctl_width);
- goto out_err;
- }
+ bs->msg_type_shift = bs->reg_offsets[SPI_MSG_TYPE_SHIFT];
+ bs->msg_ctl_width = bs->reg_offsets[SPI_MSG_CTL_WIDTH];
+ bs->tx_io = (u8 *)(bs->regs + bs->reg_offsets[SPI_MSG_DATA]);
+ bs->rx_io = (const u8 *)(bs->regs + bs->reg_offsets[SPI_RX_DATA]);
/* Initialize hardware */
ret = clk_prepare_enable(bs->clk);
@@ -476,6 +626,7 @@ static struct platform_driver bcm63xx_spi_driver = {
.name = "bcm63xx-spi",
.pm = &bcm63xx_spi_pm_ops,
},
+ .id_table = bcm63xx_spi_dev_match,
.probe = bcm63xx_spi_probe,
.remove = bcm63xx_spi_remove,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-12 07:01:43 +0000