diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/brcm63xx/patches-2.6.35/240-spi.patch | 65 |
1 files changed, 29 insertions, 36 deletions
diff --git a/target/linux/brcm63xx/patches-2.6.35/240-spi.patch b/target/linux/brcm63xx/patches-2.6.35/240-spi.patch index ab12a6f2b..adc4c221f 100644 --- a/target/linux/brcm63xx/patches-2.6.35/240-spi.patch +++ b/target/linux/brcm63xx/patches-2.6.35/240-spi.patch @@ -318,7 +318,7 @@ #endif /* BCM63XX_REGS_H_ */ --- /dev/null +++ b/drivers/spi/bcm63xx_spi.c -@@ -0,0 +1,501 @@ +@@ -0,0 +1,494 @@ +/* + * Broadcom BCM63xx SPI controller support + * @@ -370,38 +370,43 @@ + /* Data buffers */ + const unsigned char *tx_ptr; + unsigned char *rx_ptr; ++ ++ /* data iomem */ ++ u8 __iomem *tx_io; ++ const u8 __iomem *rx_io; ++ + int remaining_bytes; + + struct clk *clk; + struct platform_device *pdev; +}; + -+static inline u8 bcm_spi_readb(struct bcm63xx_hsspi *bs, ++static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs, + unsigned int offset) +{ -+ return bcm_readw(bs->regs + bcm63xx_spireg(offset)); ++ return bcm_readw(bs->regs + bcm63xx_spireg(offset)); +} + -+static inline u16 bcm_spi_readw(struct bcm63xx_hsspi *bs, ++static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs, + unsigned int offset) +{ -+ return bcm_readw(bs->regs + bcm63xx_spireg(offset)); ++ return bcm_readw(bs->regs + bcm63xx_spireg(offset)); +} + -+static inline void bcm_spi_writeb(struct bcm63xx_hsspi *bs, ++static inline void bcm_spi_writeb(struct bcm63xx_spi *bs, + u8 value, unsigned int offset) +{ -+ bcm_writeb(value, bs->regs + bcm63xx_spireg(offset)); ++ bcm_writeb(value, bs->regs + bcm63xx_spireg(offset)); +} + -+static inline void bcm_spi_writew(struct bcm63xx_hsspi *bs, ++static inline void bcm_spi_writew(struct bcm63xx_spi *bs, + u16 value, unsigned int offset) +{ -+ bcm_writew(value, bs->regs + bcm63xx_spireg(offset)); ++ bcm_writew(value, bs->regs + bcm63xx_spireg(offset)); +} + +static int bcm63xx_spi_setup_transfer(struct spi_device *spi, -+ struct spi_transfer *t) ++ struct spi_transfer *t) +{ + u8 bits_per_word; + u8 clk_cfg; @@ -442,13 +447,13 @@ + case 32: + clk_cfg = SPI_CLK_1_563MHZ; + break; -+ case 128: ++ case 64: + clk_cfg = SPI_CLK_0_781MHZ; + break; -+ case 64: ++ case 128: + default: + /* Set to slowest mode for compatibility */ -+ clk_cfg = SPI_CLK_0_781MHZ; ++ clk_cfg = SPI_CLK_0_391MHZ; + break; + } + @@ -497,20 +502,13 @@ +/* Fill the TX FIFO with as many bytes as possible */ +static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs) +{ -+ u8 tail; ++ u8 size; + + /* Fill the Tx FIFO with as many bytes as possible */ -+ tail = bcm_spi_readb(bs, SPI_MSG_TAIL); -+ -+ while ((tail < bs->fifo_size) && (bs->remaining_bytes > 0)) { -+ if (bs->tx_ptr) -+ bcm_spi_writeb(bs, *bs->tx_ptr++, SPI_MSG_DATA); -+ else -+ bcm_spi_writeb(bs, 0, SPI_MSG_DATA); -+ -+ bs->remaining_bytes--; -+ tail = bcm_spi_readb(bs, SPI_MSG_TAIL); -+ } ++ size = bs->remaining_bytes < bs->fifo_size ? bs->remaining_bytes : ++ bs->fifo_size; ++ memcpy_toio(bs->tx_io, bs->tx_ptr, size); ++ bs->remaining_bytes -= size; +} + +static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) @@ -551,6 +549,7 @@ + /* Issue the transfer */ + cmd = SPI_CMD_START_IMMEDIATE; + cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT); ++ cmd |= (spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT); + bcm_spi_writew(bs, cmd, SPI_CMD); + wait_for_completion(&bs->done); + @@ -603,16 +602,8 @@ + rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL); + + /* Read out all the data */ -+ if (rx_tail) { -+ u8 data; -+ u8 i = 0; -+ -+ for(i = 0; i < rx_tail; i++) { -+ data = bcm_spi_readb(bs, SPI_RX_DATA); -+ if (bs->rx_ptr) -+ *bs->rx_ptr++ = data; -+ } -+ } ++ if (rx_tail) ++ memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail); + + /* See if there is more data to send */ + if (bs->remaining_bytes > 0) { @@ -708,6 +699,8 @@ + master->transfer = bcm63xx_transfer; + bs->speed_hz = pdata->speed_hz; + bs->stopping = 0; ++ bs->tx_io = (u8*)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); ++ bs->rx_io = (const u8*)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); + spin_lock_init(&bs->lock); + + /* Initialize hardware */ @@ -796,7 +789,7 @@ + .owner = THIS_MODULE, + }, + .probe = bcm63xx_spi_probe, -+ .remove = bcm63xx_spi_remove, ++ .remove = __exit_p(bcm63xx_spi_remove), + .suspend = bcm63xx_spi_suspend, + .resume = bcm63xx_spi_resume, +}; |