* [PATCH 1/2] spi: introduce macros to set bits_per_word_mask @ 2013-05-22 2:36 ` Stephen Warren 0 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-22 2:36 UTC (permalink / raw) To: Mark Brown, Grant Likely; +Cc: spi-devel-general, linux-kernel, Stephen Warren Introduce two macros to make setting up spi_master.bits_per_word_mask easier, and avoid mistakes like writing BIT(n) instead of BIT(n - 1). SPI_BPW_MASK is for a single supported value of bits_per_word_mask. SPI_BPW_RANGE_MASK represents a contiguous set of bit lengths. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> --- include/linux/spi/spi.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 6ff26c8..1737256 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -308,6 +308,8 @@ struct spi_master { /* bitmask of supported bits_per_word for transfers */ u32 bits_per_word_mask; +#define SPI_BPW_MASK(bits) BIT((bits) - 1) +#define SPI_BPW_RANGE_MASK(min, max) ((BIT(max) - 1) - (BIT(min) - 1)) /* other constraints relevant to this driver */ u16 flags; -- 1.7.10.4 ^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH 1/2] spi: introduce macros to set bits_per_word_mask @ 2013-05-22 2:36 ` Stephen Warren 0 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-22 2:36 UTC (permalink / raw) To: Mark Brown, Grant Likely Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f, linux-kernel-u79uwXL29TY76Z2rM5mHXA, Stephen Warren Introduce two macros to make setting up spi_master.bits_per_word_mask easier, and avoid mistakes like writing BIT(n) instead of BIT(n - 1). SPI_BPW_MASK is for a single supported value of bits_per_word_mask. SPI_BPW_RANGE_MASK represents a contiguous set of bit lengths. Signed-off-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> --- include/linux/spi/spi.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 6ff26c8..1737256 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -308,6 +308,8 @@ struct spi_master { /* bitmask of supported bits_per_word for transfers */ u32 bits_per_word_mask; +#define SPI_BPW_MASK(bits) BIT((bits) - 1) +#define SPI_BPW_RANGE_MASK(min, max) ((BIT(max) - 1) - (BIT(min) - 1)) /* other constraints relevant to this driver */ u16 flags; -- 1.7.10.4 ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may ^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-22 2:36 ` Stephen Warren 0 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-22 2:36 UTC (permalink / raw) To: Mark Brown, Grant Likely Cc: spi-devel-general, linux-kernel, Stephen Warren, device-drivers-devel, Mike Frysinger Fill in the recently added spi_master.bits_per_word_mask field in as many drivers as possible. Make related cleanups, such as removing any redundant error-checking, or empty setup callbacks. Cc: device-drivers-devel@blackfin.uclinux.org Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> --- The only part of this change I'm not 100% sure of is to spi-bfin-*.c; these used to support any bits_per_word value that was a multiple of 8 or 16. However, the code only has u8_ops and u16_ops, which implies to me that it actually supports only 8 and 16 bits_per_word, not multiples of those. However, it'd be good if the maintainers of those files could confirm this. --- drivers/spi/spi-altera.c | 12 ------------ drivers/spi/spi-ath79.c | 4 +--- drivers/spi/spi-atmel.c | 9 +-------- drivers/spi/spi-au1550.c | 12 +----------- drivers/spi/spi-bcm63xx.c | 20 +------------------- drivers/spi/spi-bfin-sport.c | 10 ++-------- drivers/spi/spi-bfin5xx.c | 21 +++++---------------- drivers/spi/spi-clps711x.c | 7 +------ drivers/spi/spi-coldfire-qspi.c | 11 ++--------- drivers/spi/spi-davinci.c | 8 ++++---- drivers/spi/spi-dw.c | 26 ++++---------------------- drivers/spi/spi-ep93xx.c | 11 +---------- drivers/spi/spi-fsl-espi.c | 9 ++------- drivers/spi/spi-gpio.c | 4 +--- drivers/spi/spi-imx.c | 6 +++--- drivers/spi/spi-mxs.c | 7 +------ drivers/spi/spi-nuc900.c | 13 ------------- drivers/spi/spi-omap-100k.c | 12 ++---------- drivers/spi/spi-omap2-mcspi.c | 13 ++----------- drivers/spi/spi-ppc4xx.c | 13 +------------ drivers/spi/spi-pxa2xx.c | 20 ++------------------ drivers/spi/spi-s3c64xx.c | 3 ++- drivers/spi/spi-sirf.c | 6 ++---- drivers/spi/spi-ti-ssp.c | 16 +--------------- drivers/spi/spi-topcliff-pch.c | 17 +---------------- drivers/spi/spi-txx9.c | 8 +------- drivers/spi/spi-xcomm.c | 12 ++---------- drivers/spi/spi-xilinx.c | 16 ---------------- 28 files changed, 46 insertions(+), 280 deletions(-) diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index a537f8d..6b7096e 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -103,16 +103,6 @@ static void altera_spi_chipsel(struct spi_device *spi, int value) } } -static int altera_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) -{ - return 0; -} - -static int altera_spi_setup(struct spi_device *spi) -{ - return 0; -} - static inline unsigned int hw_txbyte(struct altera_spi *hw, int count) { if (hw->tx) { @@ -231,7 +221,6 @@ static int altera_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = 16; master->mode_bits = SPI_CS_HIGH; - master->setup = altera_spi_setup; hw = spi_master_get_devdata(master); platform_set_drvdata(pdev, hw); @@ -240,7 +229,6 @@ static int altera_spi_probe(struct platform_device *pdev) hw->bitbang.master = spi_master_get(master); if (!hw->bitbang.master) return err; - hw->bitbang.setup_transfer = altera_spi_setupxfer; hw->bitbang.chipselect = altera_spi_chipsel; hw->bitbang.txrx_bufs = altera_spi_txrx; diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c index e504b76..5e2d52c 100644 --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c @@ -155,9 +155,6 @@ static int ath79_spi_setup(struct spi_device *spi) { int status = 0; - if (spi->bits_per_word > 32) - return -EINVAL; - if (!spi->controller_state) { status = ath79_spi_setup_cs(spi); if (status) @@ -226,6 +223,7 @@ static int ath79_spi_probe(struct platform_device *pdev) pdata = pdev->dev.platform_data; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->setup = ath79_spi_setup; master->cleanup = ath79_spi_cleanup; if (pdata) { diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index 380387a..31cfc87 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -1268,13 +1268,6 @@ static int atmel_spi_setup(struct spi_device *spi) return -EINVAL; } - if (bits < 8 || bits > 16) { - dev_dbg(&spi->dev, - "setup: invalid bits_per_word %u (8 to 16)\n", - bits); - return -EINVAL; - } - /* see notes above re chipselect */ if (!atmel_spi_is_v2(as) && spi->chip_select == 0 @@ -1515,7 +1508,7 @@ static int atmel_spi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16); master->dev.of_node = pdev->dev.of_node; master->bus_num = pdev->id; master->num_chipselect = master->dev.of_node ? 0 : 4; diff --git a/drivers/spi/spi-au1550.c b/drivers/spi/spi-au1550.c index 44dd34b..d736fa9 100644 --- a/drivers/spi/spi-au1550.c +++ b/drivers/spi/spi-au1550.c @@ -248,11 +248,6 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) hz = t->speed_hz; } - if (bpw < 4 || bpw > 24) { - dev_err(&spi->dev, "setupxfer: invalid bits_per_word=%d\n", - bpw); - return -EINVAL; - } if (hz > spi->max_speed_hz || hz > hw->freq_max || hz < hw->freq_min) { dev_err(&spi->dev, "setupxfer: clock rate=%d out of range\n", hz); @@ -296,12 +291,6 @@ static int au1550_spi_setup(struct spi_device *spi) { struct au1550_spi *hw = spi_master_get_devdata(spi->master); - if (spi->bits_per_word < 4 || spi->bits_per_word > 24) { - dev_err(&spi->dev, "setup: invalid bits_per_word=%d\n", - spi->bits_per_word); - return -EINVAL; - } - if (spi->max_speed_hz == 0) spi->max_speed_hz = hw->freq_max; if (spi->max_speed_hz > hw->freq_max @@ -782,6 +771,7 @@ static int au1550_spi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 24); hw = spi_master_get_devdata(master); diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index a4ec5f4..270f09c 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -124,17 +124,6 @@ static void bcm63xx_spi_setup_transfer(struct spi_device *spi, /* the spi->mode bits understood by this driver: */ #define MODEBITS (SPI_CPOL | SPI_CPHA) -static int bcm63xx_spi_setup(struct spi_device *spi) -{ - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n", - __func__, spi->bits_per_word); - return -EINVAL; - } - - return 0; -} - static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *first, unsigned int num_transfers) { @@ -277,13 +266,6 @@ static int bcm63xx_spi_transfer_one(struct spi_master *master, * full-duplex transfers. */ list_for_each_entry(t, &m->transfers, transfer_list) { - if (t->bits_per_word != 8) { - dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n", - __func__, t->bits_per_word); - status = -EINVAL; - goto exit; - } - if (!first) first = t; @@ -430,11 +412,11 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) master->bus_num = pdata->bus_num; master->num_chipselect = pdata->num_chipselect; - master->setup = bcm63xx_spi_setup; master->prepare_transfer_hardware = bcm63xx_spi_prepare_transfer; master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer; master->transfer_one_message = bcm63xx_spi_transfer_one; master->mode_bits = MODEBITS; + master->bits_per_word_mask = SPI_BPW_MASK(8); 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)); diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index 39b0d17..e4a858a 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -417,7 +417,7 @@ bfin_sport_spi_pump_transfers(unsigned long data) /* Bits per word setup */ bits_per_word = transfer->bits_per_word; - if (bits_per_word % 16 == 0) + if (bits_per_word == 16) drv_data->ops = &bfin_sport_transfer_ops_u16; else drv_data->ops = &bfin_sport_transfer_ops_u8; @@ -600,13 +600,6 @@ bfin_sport_spi_setup(struct spi_device *spi) } } - if (spi->bits_per_word % 8) { - dev_err(&spi->dev, "%d bits_per_word is not supported\n", - spi->bits_per_word); - ret = -EINVAL; - goto error; - } - /* translate common spi framework into our register * following configure contents are same for tx and rx. */ @@ -778,6 +771,7 @@ static int bfin_sport_spi_probe(struct platform_device *pdev) drv_data->pin_req = platform_info->pin_req; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = pdev->id; master->num_chipselect = platform_info->num_chipselect; master->cleanup = bfin_sport_spi_cleanup; diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 317f564..e35c19c 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -643,21 +643,16 @@ static void bfin_spi_pump_transfers(unsigned long data) /* Bits per word setup */ bits_per_word = transfer->bits_per_word; - if (bits_per_word % 16 == 0) { + if (bits_per_word == 16) { drv_data->n_bytes = bits_per_word/8; drv_data->len = (transfer->len) >> 1; cr_width = BIT_CTL_WORDSIZE; drv_data->ops = &bfin_bfin_spi_transfer_ops_u16; - } else if (bits_per_word % 8 == 0) { + } else if (bits_per_word == 8) { drv_data->n_bytes = bits_per_word/8; drv_data->len = transfer->len; cr_width = 0; drv_data->ops = &bfin_bfin_spi_transfer_ops_u8; - } else { - dev_err(&drv_data->pdev->dev, "transfer: unsupported bits_per_word\n"); - message->status = -EINVAL; - bfin_spi_giveback(drv_data); - return; } cr = bfin_read(&drv_data->regs->ctl) & ~(BIT_CTL_TIMOD | BIT_CTL_WORDSIZE); cr |= cr_width; @@ -808,13 +803,13 @@ static void bfin_spi_pump_transfers(unsigned long data) bfin_write(&drv_data->regs->tdbr, chip->idle_tx_val); else { int loop; - if (bits_per_word % 16 == 0) { + if (bits_per_word == 16) { u16 *buf = (u16 *)drv_data->tx; for (loop = 0; loop < bits_per_word / 16; loop++) { bfin_write(&drv_data->regs->tdbr, *buf++); } - } else if (bits_per_word % 8 == 0) { + } else if (bits_per_word == 8) { u8 *buf = (u8 *)drv_data->tx; for (loop = 0; loop < bits_per_word / 8; loop++) bfin_write(&drv_data->regs->tdbr, *buf++); @@ -1033,12 +1028,6 @@ static int bfin_spi_setup(struct spi_device *spi) chip->ctl_reg &= bfin_ctl_reg; } - if (spi->bits_per_word % 8) { - dev_err(&spi->dev, "%d bits_per_word is not supported\n", - spi->bits_per_word); - goto error; - } - /* translate common spi framework into our register */ if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) { dev_err(&spi->dev, "unsupported spi modes detected\n"); @@ -1299,7 +1288,7 @@ static int bfin_spi_probe(struct platform_device *pdev) /* the spi->mode bits supported by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; - + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = pdev->id; master->num_chipselect = platform_info->num_chipselect; master->cleanup = bfin_spi_cleanup; diff --git a/drivers/spi/spi-clps711x.c b/drivers/spi/spi-clps711x.c index a11cbf0..e322b5b 100644 --- a/drivers/spi/spi-clps711x.c +++ b/drivers/spi/spi-clps711x.c @@ -42,12 +42,6 @@ static int spi_clps711x_setup(struct spi_device *spi) { struct spi_clps711x_data *hw = spi_master_get_devdata(spi->master); - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "Unsupported master bus width %i\n", - spi->bits_per_word); - return -EINVAL; - } - /* We are expect that SPI-device is not selected */ gpio_direction_output(hw->chipselect[spi->chip_select], !(spi->mode & SPI_CS_HIGH)); @@ -190,6 +184,7 @@ static int spi_clps711x_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->mode_bits = SPI_CPHA | SPI_CS_HIGH; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->num_chipselect = pdata->num_chipselect; master->setup = spi_clps711x_setup; master->transfer_one_message = spi_clps711x_transfer_one_message; diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c index 7b5cc9e..9a7db9d 100644 --- a/drivers/spi/spi-coldfire-qspi.c +++ b/drivers/spi/spi-coldfire-qspi.c @@ -312,10 +312,7 @@ static int mcfqspi_transfer_one_message(struct spi_master *master, bool cs_high = spi->mode & SPI_CS_HIGH; u16 qmr = MCFQSPI_QMR_MSTR; - if (t->bits_per_word) - qmr |= t->bits_per_word << 10; - else - qmr |= spi->bits_per_word << 10; + qmr |= t->bits_per_word << 10; if (spi->mode & SPI_CPHA) qmr |= MCFQSPI_QMR_CPHA; if (spi->mode & SPI_CPOL) @@ -377,11 +374,6 @@ static int mcfqspi_unprepare_transfer_hw(struct spi_master *master) static int mcfqspi_setup(struct spi_device *spi) { - if ((spi->bits_per_word < 8) || (spi->bits_per_word > 16)) { - dev_dbg(&spi->dev, "%d bits per word is not supported\n", - spi->bits_per_word); - return -EINVAL; - } if (spi->chip_select >= spi->master->num_chipselect) { dev_dbg(&spi->dev, "%d chip select is out of range\n", spi->chip_select); @@ -477,6 +469,7 @@ static int mcfqspi_probe(struct platform_device *pdev) mcfqspi->dev = &pdev->dev; master->mode_bits = SPI_CS_HIGH | SPI_CPOL | SPI_CPHA; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16); master->setup = mcfqspi_setup; master->transfer_one_message = mcfqspi_transfer_one_message; master->prepare_transfer_hardware = mcfqspi_prepare_transfer_hw; diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 50b13c9..b141ef2 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -299,16 +299,15 @@ static int davinci_spi_setup_transfer(struct spi_device *spi, * Assign function pointer to appropriate transfer method * 8bit, 16bit or 32bit transfer */ - if (bits_per_word <= 8 && bits_per_word >= 2) { + if (bits_per_word <= 8) { dspi->get_rx = davinci_spi_rx_buf_u8; dspi->get_tx = davinci_spi_tx_buf_u8; dspi->bytes_per_word[spi->chip_select] = 1; - } else if (bits_per_word <= 16 && bits_per_word >= 2) { + } else { dspi->get_rx = davinci_spi_rx_buf_u16; dspi->get_tx = davinci_spi_tx_buf_u16; dspi->bytes_per_word[spi->chip_select] = 2; - } else - return -EINVAL; + } if (!hz) hz = spi->max_speed_hz; @@ -933,6 +932,7 @@ static int davinci_spi_probe(struct platform_device *pdev) master->dev.of_node = pdev->dev.of_node; master->bus_num = pdev->id; master->num_chipselect = pdata->num_chipselect; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(2, 16); master->setup = davinci_spi_setup; dspi->bitbang.chipselect = davinci_spi_chipselect; diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c1abc06..79c958e 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -457,19 +457,7 @@ static void pump_transfers(unsigned long data) } if (transfer->bits_per_word) { bits = transfer->bits_per_word; - - switch (bits) { - case 8: - case 16: - dws->n_bytes = dws->dma_width = bits >> 3; - break; - default: - printk(KERN_ERR "MRST SPI0: unsupported bits:" - "%db\n", bits); - message->status = -EIO; - goto early_exit; - } - + dws->n_bytes = dws->dma_width = bits >> 3; cr0 = (bits - 1) | (chip->type << SPI_FRF_OFFSET) | (spi->mode << SPI_MODE_OFFSET) @@ -629,9 +617,6 @@ static int dw_spi_setup(struct spi_device *spi) struct dw_spi_chip *chip_info = NULL; struct chip_data *chip; - if (spi->bits_per_word != 8 && spi->bits_per_word != 16) - return -EINVAL; - /* Only alloc on first setup */ chip = spi_get_ctldata(spi); if (!chip) { @@ -660,16 +645,12 @@ static int dw_spi_setup(struct spi_device *spi) chip->enable_dma = chip_info->enable_dma; } - if (spi->bits_per_word <= 8) { + if (spi->bits_per_word == 8) { chip->n_bytes = 1; chip->dma_width = 1; - } else if (spi->bits_per_word <= 16) { + } else if (spi->bits_per_word == 16) { chip->n_bytes = 2; chip->dma_width = 2; - } else { - /* Never take >16b case for MRST SPIC */ - dev_err(&spi->dev, "invalid wordsize\n"); - return -EINVAL; } chip->bits_per_word = spi->bits_per_word; @@ -824,6 +805,7 @@ int dw_spi_add_host(struct dw_spi *dws) } master->mode_bits = SPI_CPOL | SPI_CPHA; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = dws->bus_num; master->num_chipselect = dws->num_cs; master->cleanup = dw_spi_cleanup; diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index d7bac60..f1b1497 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -296,12 +296,6 @@ static int ep93xx_spi_setup(struct spi_device *spi) struct ep93xx_spi *espi = spi_master_get_devdata(spi->master); struct ep93xx_spi_chip *chip; - if (spi->bits_per_word < 4 || spi->bits_per_word > 16) { - dev_err(&espi->pdev->dev, "invalid bits per word %d\n", - spi->bits_per_word); - return -EINVAL; - } - chip = spi_get_ctldata(spi); if (!chip) { dev_dbg(&espi->pdev->dev, "initial setup for %s\n", @@ -365,10 +359,6 @@ static int ep93xx_spi_transfer(struct spi_device *spi, struct spi_message *msg) /* first validate each transfer */ list_for_each_entry(t, &msg->transfers, transfer_list) { - if (t->bits_per_word) { - if (t->bits_per_word < 4 || t->bits_per_word > 16) - return -EINVAL; - } if (t->speed_hz && t->speed_hz < espi->min_rate) return -EINVAL; } @@ -1046,6 +1036,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = info->num_chipselect; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); platform_set_drvdata(pdev, master); diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 24610ca..0ef05f1 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -144,10 +144,6 @@ static int fsl_espi_setup_transfer(struct spi_device *spi, if (!bits_per_word) bits_per_word = spi->bits_per_word; - /* Make sure its a bit width we support [4..16] */ - if ((bits_per_word < 4) || (bits_per_word > 16)) - return -EINVAL; - if (!hz) hz = spi->max_speed_hz; @@ -157,12 +153,10 @@ static int fsl_espi_setup_transfer(struct spi_device *spi, cs->get_tx = mpc8xxx_spi_tx_buf_u32; if (bits_per_word <= 8) { cs->rx_shift = 8 - bits_per_word; - } else if (bits_per_word <= 16) { + } else cs->rx_shift = 16 - bits_per_word; if (spi->mode & SPI_LSB_FIRST) cs->get_tx = fsl_espi_tx_buf_lsb; - } else { - return -EINVAL; } mpc8xxx_spi->rx_shift = cs->rx_shift; @@ -609,6 +603,7 @@ static struct spi_master * fsl_espi_probe(struct device *dev, if (ret) goto err_probe; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); master->setup = fsl_espi_setup; mpc8xxx_spi = spi_master_get_devdata(master); diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 0021fc4..a7801a8 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -239,9 +239,6 @@ static int spi_gpio_setup(struct spi_device *spi) struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); struct device_node *np = spi->master->dev.of_node; - if (spi->bits_per_word > 32) - return -EINVAL; - if (np) { /* * In DT environments, the CS GPIOs have already been @@ -446,6 +443,7 @@ static int spi_gpio_probe(struct platform_device *pdev) if (pdata) spi_gpio->pdata = *pdata; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->flags = master_flags; master->bus_num = pdev->id; master->num_chipselect = SPI_N_CHIPSEL; diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 0befeeb..cb88eeb 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -698,11 +698,10 @@ static int spi_imx_setupxfer(struct spi_device *spi, } else if (config.bpw <= 16) { spi_imx->rx = spi_imx_buf_rx_u16; spi_imx->tx = spi_imx_buf_tx_u16; - } else if (config.bpw <= 32) { + } spi_imx->rx = spi_imx_buf_rx_u32; spi_imx->tx = spi_imx_buf_tx_u32; - } else - BUG(); + } spi_imx->devtype_data->config(spi_imx, &config); @@ -783,6 +782,7 @@ static int spi_imx_probe(struct platform_device *pdev) platform_set_drvdata(pdev, master); + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->bus_num = pdev->id; master->num_chipselect = num_cs; diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c index 8498276..62b7e8e 100644 --- a/drivers/spi/spi-mxs.c +++ b/drivers/spi/spi-mxs.c @@ -75,12 +75,6 @@ static int mxs_spi_setup_transfer(struct spi_device *dev, if (t && t->bits_per_word) bits_per_word = t->bits_per_word; - if (bits_per_word != 8) { - dev_err(&dev->dev, "%s, unsupported bits_per_word=%d\n", - __func__, bits_per_word); - return -EINVAL; - } - hz = dev->max_speed_hz; if (t && t->speed_hz) hz = min(hz, t->speed_hz); @@ -548,6 +542,7 @@ static int mxs_spi_probe(struct platform_device *pdev) master->transfer_one_message = mxs_spi_transfer_one; master->setup = mxs_spi_setup; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->mode_bits = SPI_CPOL | SPI_CPHA; master->num_chipselect = 3; master->dev.of_node = np; diff --git a/drivers/spi/spi-nuc900.c b/drivers/spi/spi-nuc900.c index b3f9ec8..94efa2c 100644 --- a/drivers/spi/spi-nuc900.c +++ b/drivers/spi/spi-nuc900.c @@ -174,17 +174,6 @@ static void nuc900_spi_gobusy(struct nuc900_spi *hw) spin_unlock_irqrestore(&hw->lock, flags); } -static int nuc900_spi_setupxfer(struct spi_device *spi, - struct spi_transfer *t) -{ - return 0; -} - -static int nuc900_spi_setup(struct spi_device *spi) -{ - return 0; -} - static inline unsigned int hw_txbyte(struct nuc900_spi *hw, int count) { return hw->tx ? hw->tx[count] : 0; @@ -377,10 +366,8 @@ static int nuc900_spi_probe(struct platform_device *pdev) master->num_chipselect = hw->pdata->num_cs; master->bus_num = hw->pdata->bus_num; hw->bitbang.master = hw->master; - hw->bitbang.setup_transfer = nuc900_spi_setupxfer; hw->bitbang.chipselect = nuc900_spi_chipsel; hw->bitbang.txrx_bufs = nuc900_spi_txrx; - hw->bitbang.master->setup = nuc900_spi_setup; hw->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (hw->res == NULL) { diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c index 78d29a1..9137fcc 100644 --- a/drivers/spi/spi-omap-100k.c +++ b/drivers/spi/spi-omap-100k.c @@ -298,12 +298,6 @@ static int omap1_spi100k_setup(struct spi_device *spi) struct omap1_spi100k *spi100k; struct omap1_spi100k_cs *cs = spi->controller_state; - if (spi->bits_per_word < 4 || spi->bits_per_word > 32) { - dev_dbg(&spi->dev, "setup: unsupported %d bit words\n", - spi->bits_per_word); - return -EINVAL; - } - spi100k = spi_master_get_devdata(spi->master); if (!cs) { @@ -451,10 +445,7 @@ static int omap1_spi100k_transfer(struct spi_device *spi, struct spi_message *m) unsigned len = t->len; if (t->speed_hz > OMAP1_SPI100K_MAX_FREQ - || (len && !(rx_buf || tx_buf)) - || (t->bits_per_word && - ( t->bits_per_word < 4 - || t->bits_per_word > 32))) { + || (len && !(rx_buf || tx_buf))) { dev_dbg(&spi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n", t->speed_hz, len, @@ -509,6 +500,7 @@ static int omap1_spi100k_probe(struct platform_device *pdev) master->cleanup = NULL; master->num_chipselect = 2; master->mode_bits = MODEBITS; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); dev_set_drvdata(&pdev->dev, master); diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 86d2158..6246fb4 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -857,12 +857,6 @@ static int omap2_mcspi_setup(struct spi_device *spi) struct omap2_mcspi_dma *mcspi_dma; struct omap2_mcspi_cs *cs = spi->controller_state; - if (spi->bits_per_word < 4 || spi->bits_per_word > 32) { - dev_dbg(&spi->dev, "setup: unsupported %d bit words\n", - spi->bits_per_word); - return -EINVAL; - } - mcspi_dma = &mcspi->dma_channels[spi->chip_select]; if (!cs) { @@ -1072,10 +1066,7 @@ static int omap2_mcspi_transfer_one_message(struct spi_master *master, unsigned len = t->len; if (t->speed_hz > OMAP2_MCSPI_MAX_FREQ - || (len && !(rx_buf || tx_buf)) - || (t->bits_per_word && - ( t->bits_per_word < 4 - || t->bits_per_word > 32))) { + || (len && !(rx_buf || tx_buf))) { dev_dbg(mcspi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n", t->speed_hz, len, @@ -1196,7 +1187,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); master->setup = omap2_mcspi_setup; master->prepare_transfer_hardware = omap2_prepare_transfer; master->unprepare_transfer_hardware = omap2_unprepare_transfer; diff --git a/drivers/spi/spi-ppc4xx.c b/drivers/spi/spi-ppc4xx.c index 357f183..01df34b 100644 --- a/drivers/spi/spi-ppc4xx.c +++ b/drivers/spi/spi-ppc4xx.c @@ -190,12 +190,6 @@ static int spi_ppc4xx_setupxfer(struct spi_device *spi, struct spi_transfer *t) speed = min(t->speed_hz, spi->max_speed_hz); } - if (bits_per_word != 8) { - dev_err(&spi->dev, "invalid bits-per-word (%d)\n", - bits_per_word); - return -EINVAL; - } - if (!speed || (speed > spi->max_speed_hz)) { dev_err(&spi->dev, "invalid speed_hz (%d)\n", speed); return -EINVAL; @@ -229,12 +223,6 @@ static int spi_ppc4xx_setup(struct spi_device *spi) { struct spi_ppc4xx_cs *cs = spi->controller_state; - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "invalid bits-per-word (%d)\n", - spi->bits_per_word); - return -EINVAL; - } - if (!spi->max_speed_hz) { dev_err(&spi->dev, "invalid max_speed_hz (must be non-zero)\n"); return -EINVAL; @@ -465,6 +453,7 @@ static int spi_ppc4xx_of_probe(struct platform_device *op) bbp->use_dma = 0; bbp->master->setup = spi_ppc4xx_setup; bbp->master->cleanup = spi_ppc4xx_cleanup; + bbp->master->bits_per_word_mask = SPI_BPW_MASK(8); /* the spi->mode bits understood by this driver: */ bbp->master->mode_bits = diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index f5d84d6..7de2ca1 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -881,21 +881,6 @@ static int setup(struct spi_device *spi) rx_thres = RX_THRESH_DFLT; } - if (!pxa25x_ssp_comp(drv_data) - && (spi->bits_per_word < 4 || spi->bits_per_word > 32)) { - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " - "b/w not 4-32 for type non-PXA25x_SSP\n", - drv_data->ssp_type, spi->bits_per_word); - return -EINVAL; - } else if (pxa25x_ssp_comp(drv_data) - && (spi->bits_per_word < 4 - || spi->bits_per_word > 16)) { - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " - "b/w not 4-16 for type PXA25x_SSP\n", - drv_data->ssp_type, spi->bits_per_word); - return -EINVAL; - } - /* Only alloc on first setup */ chip = spi_get_ctldata(spi); if (!chip) { @@ -1011,9 +996,6 @@ static int setup(struct spi_device *spi) chip->n_bytes = 4; chip->read = u32_reader; chip->write = u32_writer; - } else { - dev_err(&spi->dev, "invalid wordsize\n"); - return -ENODEV; } chip->bits_per_word = spi->bits_per_word; @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) drv_data->ioaddr = ssp->mmio_base; drv_data->ssdr_physical = ssp->phys_base + SSDR; if (pxa25x_ssp_comp(drv_data)) { + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; drv_data->dma_cr1 = 0; drv_data->clear_sr = SSSR_ROR; drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; } else { + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; drv_data->dma_cr1 = DEFAULT_DMA_CR1; drv_data->clear_sr = SSSR_ROR | SSSR_TINT; diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 5000586..39a3824 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1314,7 +1314,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer; master->num_chipselect = sci->num_cs; master->dma_alignment = 8; - master->bits_per_word_mask = BIT(32 - 1) | BIT(16 - 1) | BIT(8 - 1); + master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) | + SPI_BPW_MASK(8); /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 0808cd5..77497be 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -425,10 +425,6 @@ spi_sirfsoc_setup_transfer(struct spi_device *spi, struct spi_transfer *t) rxfifo_ctrl = SIRFSOC_SPI_FIFO_THD(SIRFSOC_SPI_FIFO_SIZE / 2) | SIRFSOC_SPI_FIFO_WIDTH_DWORD; break; - default: - dev_err(&spi->dev, "Bits per word %d not supported\n", - bits_per_word); - return -EINVAL; } if (!(spi->mode & SPI_CS_HIGH)) @@ -556,6 +552,8 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) sspi->bitbang.txrx_bufs = spi_sirfsoc_transfer; sspi->bitbang.master->setup = spi_sirfsoc_setup; master->bus_num = pdev->id; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(12) | + SPI_BPW_MASK(16) | SPI_BPW_MASK(32); sspi->bitbang.master->dev.of_node = pdev->dev.of_node; sspi->p = pinctrl_get_select_default(&pdev->dev); diff --git a/drivers/spi/spi-ti-ssp.c b/drivers/spi/spi-ti-ssp.c index 46992ca..10606fc 100644 --- a/drivers/spi/spi-ti-ssp.c +++ b/drivers/spi/spi-ti-ssp.c @@ -237,14 +237,6 @@ static void ti_ssp_spi_work(struct work_struct *work) spin_unlock(&hw->lock); } -static int ti_ssp_spi_setup(struct spi_device *spi) -{ - if (spi->bits_per_word > 32) - return -EINVAL; - - return 0; -} - static int ti_ssp_spi_transfer(struct spi_device *spi, struct spi_message *m) { struct ti_ssp_spi *hw; @@ -269,12 +261,6 @@ static int ti_ssp_spi_transfer(struct spi_device *spi, struct spi_message *m) dev_err(&spi->dev, "invalid xfer, full duplex\n"); return -EINVAL; } - - if (t->bits_per_word > 32) { - dev_err(&spi->dev, "invalid xfer width %d\n", - t->bits_per_word); - return -EINVAL; - } } spin_lock(&hw->lock); @@ -337,8 +323,8 @@ static int ti_ssp_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = pdata->num_cs; master->mode_bits = MODE_BITS; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->flags = SPI_MASTER_HALF_DUPLEX; - master->setup = ti_ssp_spi_setup; master->transfer = ti_ssp_spi_transfer; error = spi_register_master(master); diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 35f60bd..15cb39b 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -472,11 +472,6 @@ static int pch_spi_setup(struct spi_device *pspi) dev_dbg(&pspi->dev, "%s 8 bits per word\n", __func__); } - if ((pspi->bits_per_word != 8) && (pspi->bits_per_word != 16)) { - dev_err(&pspi->dev, "%s Invalid bits per word\n", __func__); - return -EINVAL; - } - /* Check baud rate setting */ /* if baud rate of chip is greater than max we can support,return error */ @@ -537,17 +532,6 @@ static int pch_spi_transfer(struct spi_device *pspi, struct spi_message *pmsg) /* if baud rate has been specified validate the same */ if (transfer->speed_hz > PCH_MAX_BAUDRATE) transfer->speed_hz = PCH_MAX_BAUDRATE; - - /* if bits per word has been specified validate the same */ - if (transfer->bits_per_word) { - if ((transfer->bits_per_word != 8) - && (transfer->bits_per_word != 16)) { - retval = -EINVAL; - dev_err(&pspi->dev, - "%s Invalid bits per word\n", __func__); - goto err_return_spinlock; - } - } } spin_unlock_irqrestore(&data->lock, flags); @@ -1442,6 +1426,7 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev) master->setup = pch_spi_setup; master->transfer = pch_spi_transfer; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); data->board_dat = board_dat; data->plat_dev = plat_dev; diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c index adb8530..cefd956 100644 --- a/drivers/spi/spi-txx9.c +++ b/drivers/spi/spi-txx9.c @@ -116,17 +116,12 @@ static void txx9spi_cs_func(struct spi_device *spi, struct txx9spi *c, static int txx9spi_setup(struct spi_device *spi) { struct txx9spi *c = spi_master_get_devdata(spi->master); - u8 bits_per_word; if (!spi->max_speed_hz || spi->max_speed_hz > c->max_speed_hz || spi->max_speed_hz < c->min_speed_hz) return -EINVAL; - bits_per_word = spi->bits_per_word; - if (bits_per_word != 8 && bits_per_word != 16) - return -EINVAL; - if (gpio_direction_output(spi->chip_select, !(spi->mode & SPI_CS_HIGH))) { dev_err(&spi->dev, "Cannot setup GPIO for chipselect.\n"); @@ -319,8 +314,6 @@ static int txx9spi_transfer(struct spi_device *spi, struct spi_message *m) if (!t->tx_buf && !t->rx_buf && t->len) return -EINVAL; - if (bits_per_word != 8 && bits_per_word != 16) - return -EINVAL; if (t->len & ((bits_per_word >> 3) - 1)) return -EINVAL; if (speed_hz < c->min_speed_hz || speed_hz > c->max_speed_hz) @@ -411,6 +404,7 @@ static int txx9spi_probe(struct platform_device *dev) master->setup = txx9spi_setup; master->transfer = txx9spi_transfer; master->num_chipselect = (u16)UINT_MAX; /* any GPIO numbers */ + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); ret = spi_register_master(master); if (ret) diff --git a/drivers/spi/spi-xcomm.c b/drivers/spi/spi-xcomm.c index 4d3ec8b..4258c71 100644 --- a/drivers/spi/spi-xcomm.c +++ b/drivers/spi/spi-xcomm.c @@ -76,7 +76,7 @@ static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm, { unsigned int speed; - if ((t->bits_per_word && t->bits_per_word != 8) || t->len > 62) + if (t->len > 62) return -EINVAL; speed = t->speed_hz ? t->speed_hz : spi->max_speed_hz; @@ -209,14 +209,6 @@ static int spi_xcomm_transfer_one(struct spi_master *master, return status; } -static int spi_xcomm_setup(struct spi_device *spi) -{ - if (spi->bits_per_word != 8) - return -EINVAL; - - return 0; -} - static int spi_xcomm_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -233,8 +225,8 @@ static int spi_xcomm_probe(struct i2c_client *i2c, master->num_chipselect = 16; master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_3WIRE; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->flags = SPI_MASTER_HALF_DUPLEX; - master->setup = spi_xcomm_setup; master->transfer_one_message = spi_xcomm_transfer_one; master->dev.of_node = i2c->dev.of_node; i2c_set_clientdata(i2c, master); diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index e1d7696..f321bf9 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -232,21 +232,6 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, return 0; } -static int xilinx_spi_setup(struct spi_device *spi) -{ - /* always return 0, we can not check the number of bits. - * There are cases when SPI setup is called before any driver is - * there, in that case the SPI core defaults to 8 bits, which we - * do not support in some cases. But if we return an error, the - * SPI device would not be registered and no driver can get hold of it - * When the driver is there, it will call SPI setup again with the - * correct number of bits per transfer. - * If a driver setups with the wrong bit number, it will fail when - * it tries to do a transfer - */ - return 0; -} - static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi) { u8 sr; @@ -377,7 +362,6 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem, xspi->bitbang.chipselect = xilinx_spi_chipselect; xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer; xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs; - xspi->bitbang.master->setup = xilinx_spi_setup; init_completion(&xspi->done); if (!request_mem_region(mem->start, resource_size(mem), -- 1.7.10.4 ^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-22 2:36 ` Stephen Warren 0 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-22 2:36 UTC (permalink / raw) To: Mark Brown, Grant Likely Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f, Mike Frysinger, linux-kernel-u79uwXL29TY76Z2rM5mHXA, device-drivers-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b, Stephen Warren Fill in the recently added spi_master.bits_per_word_mask field in as many drivers as possible. Make related cleanups, such as removing any redundant error-checking, or empty setup callbacks. Cc: device-drivers-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org Cc: Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org> Signed-off-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> --- The only part of this change I'm not 100% sure of is to spi-bfin-*.c; these used to support any bits_per_word value that was a multiple of 8 or 16. However, the code only has u8_ops and u16_ops, which implies to me that it actually supports only 8 and 16 bits_per_word, not multiples of those. However, it'd be good if the maintainers of those files could confirm this. --- drivers/spi/spi-altera.c | 12 ------------ drivers/spi/spi-ath79.c | 4 +--- drivers/spi/spi-atmel.c | 9 +-------- drivers/spi/spi-au1550.c | 12 +----------- drivers/spi/spi-bcm63xx.c | 20 +------------------- drivers/spi/spi-bfin-sport.c | 10 ++-------- drivers/spi/spi-bfin5xx.c | 21 +++++---------------- drivers/spi/spi-clps711x.c | 7 +------ drivers/spi/spi-coldfire-qspi.c | 11 ++--------- drivers/spi/spi-davinci.c | 8 ++++---- drivers/spi/spi-dw.c | 26 ++++---------------------- drivers/spi/spi-ep93xx.c | 11 +---------- drivers/spi/spi-fsl-espi.c | 9 ++------- drivers/spi/spi-gpio.c | 4 +--- drivers/spi/spi-imx.c | 6 +++--- drivers/spi/spi-mxs.c | 7 +------ drivers/spi/spi-nuc900.c | 13 ------------- drivers/spi/spi-omap-100k.c | 12 ++---------- drivers/spi/spi-omap2-mcspi.c | 13 ++----------- drivers/spi/spi-ppc4xx.c | 13 +------------ drivers/spi/spi-pxa2xx.c | 20 ++------------------ drivers/spi/spi-s3c64xx.c | 3 ++- drivers/spi/spi-sirf.c | 6 ++---- drivers/spi/spi-ti-ssp.c | 16 +--------------- drivers/spi/spi-topcliff-pch.c | 17 +---------------- drivers/spi/spi-txx9.c | 8 +------- drivers/spi/spi-xcomm.c | 12 ++---------- drivers/spi/spi-xilinx.c | 16 ---------------- 28 files changed, 46 insertions(+), 280 deletions(-) diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index a537f8d..6b7096e 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -103,16 +103,6 @@ static void altera_spi_chipsel(struct spi_device *spi, int value) } } -static int altera_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) -{ - return 0; -} - -static int altera_spi_setup(struct spi_device *spi) -{ - return 0; -} - static inline unsigned int hw_txbyte(struct altera_spi *hw, int count) { if (hw->tx) { @@ -231,7 +221,6 @@ static int altera_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = 16; master->mode_bits = SPI_CS_HIGH; - master->setup = altera_spi_setup; hw = spi_master_get_devdata(master); platform_set_drvdata(pdev, hw); @@ -240,7 +229,6 @@ static int altera_spi_probe(struct platform_device *pdev) hw->bitbang.master = spi_master_get(master); if (!hw->bitbang.master) return err; - hw->bitbang.setup_transfer = altera_spi_setupxfer; hw->bitbang.chipselect = altera_spi_chipsel; hw->bitbang.txrx_bufs = altera_spi_txrx; diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c index e504b76..5e2d52c 100644 --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c @@ -155,9 +155,6 @@ static int ath79_spi_setup(struct spi_device *spi) { int status = 0; - if (spi->bits_per_word > 32) - return -EINVAL; - if (!spi->controller_state) { status = ath79_spi_setup_cs(spi); if (status) @@ -226,6 +223,7 @@ static int ath79_spi_probe(struct platform_device *pdev) pdata = pdev->dev.platform_data; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->setup = ath79_spi_setup; master->cleanup = ath79_spi_cleanup; if (pdata) { diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index 380387a..31cfc87 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -1268,13 +1268,6 @@ static int atmel_spi_setup(struct spi_device *spi) return -EINVAL; } - if (bits < 8 || bits > 16) { - dev_dbg(&spi->dev, - "setup: invalid bits_per_word %u (8 to 16)\n", - bits); - return -EINVAL; - } - /* see notes above re chipselect */ if (!atmel_spi_is_v2(as) && spi->chip_select == 0 @@ -1515,7 +1508,7 @@ static int atmel_spi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16); master->dev.of_node = pdev->dev.of_node; master->bus_num = pdev->id; master->num_chipselect = master->dev.of_node ? 0 : 4; diff --git a/drivers/spi/spi-au1550.c b/drivers/spi/spi-au1550.c index 44dd34b..d736fa9 100644 --- a/drivers/spi/spi-au1550.c +++ b/drivers/spi/spi-au1550.c @@ -248,11 +248,6 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) hz = t->speed_hz; } - if (bpw < 4 || bpw > 24) { - dev_err(&spi->dev, "setupxfer: invalid bits_per_word=%d\n", - bpw); - return -EINVAL; - } if (hz > spi->max_speed_hz || hz > hw->freq_max || hz < hw->freq_min) { dev_err(&spi->dev, "setupxfer: clock rate=%d out of range\n", hz); @@ -296,12 +291,6 @@ static int au1550_spi_setup(struct spi_device *spi) { struct au1550_spi *hw = spi_master_get_devdata(spi->master); - if (spi->bits_per_word < 4 || spi->bits_per_word > 24) { - dev_err(&spi->dev, "setup: invalid bits_per_word=%d\n", - spi->bits_per_word); - return -EINVAL; - } - if (spi->max_speed_hz == 0) spi->max_speed_hz = hw->freq_max; if (spi->max_speed_hz > hw->freq_max @@ -782,6 +771,7 @@ static int au1550_spi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 24); hw = spi_master_get_devdata(master); diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index a4ec5f4..270f09c 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -124,17 +124,6 @@ static void bcm63xx_spi_setup_transfer(struct spi_device *spi, /* the spi->mode bits understood by this driver: */ #define MODEBITS (SPI_CPOL | SPI_CPHA) -static int bcm63xx_spi_setup(struct spi_device *spi) -{ - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n", - __func__, spi->bits_per_word); - return -EINVAL; - } - - return 0; -} - static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *first, unsigned int num_transfers) { @@ -277,13 +266,6 @@ static int bcm63xx_spi_transfer_one(struct spi_master *master, * full-duplex transfers. */ list_for_each_entry(t, &m->transfers, transfer_list) { - if (t->bits_per_word != 8) { - dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n", - __func__, t->bits_per_word); - status = -EINVAL; - goto exit; - } - if (!first) first = t; @@ -430,11 +412,11 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) master->bus_num = pdata->bus_num; master->num_chipselect = pdata->num_chipselect; - master->setup = bcm63xx_spi_setup; master->prepare_transfer_hardware = bcm63xx_spi_prepare_transfer; master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer; master->transfer_one_message = bcm63xx_spi_transfer_one; master->mode_bits = MODEBITS; + master->bits_per_word_mask = SPI_BPW_MASK(8); 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)); diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index 39b0d17..e4a858a 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -417,7 +417,7 @@ bfin_sport_spi_pump_transfers(unsigned long data) /* Bits per word setup */ bits_per_word = transfer->bits_per_word; - if (bits_per_word % 16 == 0) + if (bits_per_word == 16) drv_data->ops = &bfin_sport_transfer_ops_u16; else drv_data->ops = &bfin_sport_transfer_ops_u8; @@ -600,13 +600,6 @@ bfin_sport_spi_setup(struct spi_device *spi) } } - if (spi->bits_per_word % 8) { - dev_err(&spi->dev, "%d bits_per_word is not supported\n", - spi->bits_per_word); - ret = -EINVAL; - goto error; - } - /* translate common spi framework into our register * following configure contents are same for tx and rx. */ @@ -778,6 +771,7 @@ static int bfin_sport_spi_probe(struct platform_device *pdev) drv_data->pin_req = platform_info->pin_req; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = pdev->id; master->num_chipselect = platform_info->num_chipselect; master->cleanup = bfin_sport_spi_cleanup; diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 317f564..e35c19c 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -643,21 +643,16 @@ static void bfin_spi_pump_transfers(unsigned long data) /* Bits per word setup */ bits_per_word = transfer->bits_per_word; - if (bits_per_word % 16 == 0) { + if (bits_per_word == 16) { drv_data->n_bytes = bits_per_word/8; drv_data->len = (transfer->len) >> 1; cr_width = BIT_CTL_WORDSIZE; drv_data->ops = &bfin_bfin_spi_transfer_ops_u16; - } else if (bits_per_word % 8 == 0) { + } else if (bits_per_word == 8) { drv_data->n_bytes = bits_per_word/8; drv_data->len = transfer->len; cr_width = 0; drv_data->ops = &bfin_bfin_spi_transfer_ops_u8; - } else { - dev_err(&drv_data->pdev->dev, "transfer: unsupported bits_per_word\n"); - message->status = -EINVAL; - bfin_spi_giveback(drv_data); - return; } cr = bfin_read(&drv_data->regs->ctl) & ~(BIT_CTL_TIMOD | BIT_CTL_WORDSIZE); cr |= cr_width; @@ -808,13 +803,13 @@ static void bfin_spi_pump_transfers(unsigned long data) bfin_write(&drv_data->regs->tdbr, chip->idle_tx_val); else { int loop; - if (bits_per_word % 16 == 0) { + if (bits_per_word == 16) { u16 *buf = (u16 *)drv_data->tx; for (loop = 0; loop < bits_per_word / 16; loop++) { bfin_write(&drv_data->regs->tdbr, *buf++); } - } else if (bits_per_word % 8 == 0) { + } else if (bits_per_word == 8) { u8 *buf = (u8 *)drv_data->tx; for (loop = 0; loop < bits_per_word / 8; loop++) bfin_write(&drv_data->regs->tdbr, *buf++); @@ -1033,12 +1028,6 @@ static int bfin_spi_setup(struct spi_device *spi) chip->ctl_reg &= bfin_ctl_reg; } - if (spi->bits_per_word % 8) { - dev_err(&spi->dev, "%d bits_per_word is not supported\n", - spi->bits_per_word); - goto error; - } - /* translate common spi framework into our register */ if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) { dev_err(&spi->dev, "unsupported spi modes detected\n"); @@ -1299,7 +1288,7 @@ static int bfin_spi_probe(struct platform_device *pdev) /* the spi->mode bits supported by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; - + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = pdev->id; master->num_chipselect = platform_info->num_chipselect; master->cleanup = bfin_spi_cleanup; diff --git a/drivers/spi/spi-clps711x.c b/drivers/spi/spi-clps711x.c index a11cbf0..e322b5b 100644 --- a/drivers/spi/spi-clps711x.c +++ b/drivers/spi/spi-clps711x.c @@ -42,12 +42,6 @@ static int spi_clps711x_setup(struct spi_device *spi) { struct spi_clps711x_data *hw = spi_master_get_devdata(spi->master); - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "Unsupported master bus width %i\n", - spi->bits_per_word); - return -EINVAL; - } - /* We are expect that SPI-device is not selected */ gpio_direction_output(hw->chipselect[spi->chip_select], !(spi->mode & SPI_CS_HIGH)); @@ -190,6 +184,7 @@ static int spi_clps711x_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->mode_bits = SPI_CPHA | SPI_CS_HIGH; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->num_chipselect = pdata->num_chipselect; master->setup = spi_clps711x_setup; master->transfer_one_message = spi_clps711x_transfer_one_message; diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c index 7b5cc9e..9a7db9d 100644 --- a/drivers/spi/spi-coldfire-qspi.c +++ b/drivers/spi/spi-coldfire-qspi.c @@ -312,10 +312,7 @@ static int mcfqspi_transfer_one_message(struct spi_master *master, bool cs_high = spi->mode & SPI_CS_HIGH; u16 qmr = MCFQSPI_QMR_MSTR; - if (t->bits_per_word) - qmr |= t->bits_per_word << 10; - else - qmr |= spi->bits_per_word << 10; + qmr |= t->bits_per_word << 10; if (spi->mode & SPI_CPHA) qmr |= MCFQSPI_QMR_CPHA; if (spi->mode & SPI_CPOL) @@ -377,11 +374,6 @@ static int mcfqspi_unprepare_transfer_hw(struct spi_master *master) static int mcfqspi_setup(struct spi_device *spi) { - if ((spi->bits_per_word < 8) || (spi->bits_per_word > 16)) { - dev_dbg(&spi->dev, "%d bits per word is not supported\n", - spi->bits_per_word); - return -EINVAL; - } if (spi->chip_select >= spi->master->num_chipselect) { dev_dbg(&spi->dev, "%d chip select is out of range\n", spi->chip_select); @@ -477,6 +469,7 @@ static int mcfqspi_probe(struct platform_device *pdev) mcfqspi->dev = &pdev->dev; master->mode_bits = SPI_CS_HIGH | SPI_CPOL | SPI_CPHA; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16); master->setup = mcfqspi_setup; master->transfer_one_message = mcfqspi_transfer_one_message; master->prepare_transfer_hardware = mcfqspi_prepare_transfer_hw; diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 50b13c9..b141ef2 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -299,16 +299,15 @@ static int davinci_spi_setup_transfer(struct spi_device *spi, * Assign function pointer to appropriate transfer method * 8bit, 16bit or 32bit transfer */ - if (bits_per_word <= 8 && bits_per_word >= 2) { + if (bits_per_word <= 8) { dspi->get_rx = davinci_spi_rx_buf_u8; dspi->get_tx = davinci_spi_tx_buf_u8; dspi->bytes_per_word[spi->chip_select] = 1; - } else if (bits_per_word <= 16 && bits_per_word >= 2) { + } else { dspi->get_rx = davinci_spi_rx_buf_u16; dspi->get_tx = davinci_spi_tx_buf_u16; dspi->bytes_per_word[spi->chip_select] = 2; - } else - return -EINVAL; + } if (!hz) hz = spi->max_speed_hz; @@ -933,6 +932,7 @@ static int davinci_spi_probe(struct platform_device *pdev) master->dev.of_node = pdev->dev.of_node; master->bus_num = pdev->id; master->num_chipselect = pdata->num_chipselect; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(2, 16); master->setup = davinci_spi_setup; dspi->bitbang.chipselect = davinci_spi_chipselect; diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c1abc06..79c958e 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -457,19 +457,7 @@ static void pump_transfers(unsigned long data) } if (transfer->bits_per_word) { bits = transfer->bits_per_word; - - switch (bits) { - case 8: - case 16: - dws->n_bytes = dws->dma_width = bits >> 3; - break; - default: - printk(KERN_ERR "MRST SPI0: unsupported bits:" - "%db\n", bits); - message->status = -EIO; - goto early_exit; - } - + dws->n_bytes = dws->dma_width = bits >> 3; cr0 = (bits - 1) | (chip->type << SPI_FRF_OFFSET) | (spi->mode << SPI_MODE_OFFSET) @@ -629,9 +617,6 @@ static int dw_spi_setup(struct spi_device *spi) struct dw_spi_chip *chip_info = NULL; struct chip_data *chip; - if (spi->bits_per_word != 8 && spi->bits_per_word != 16) - return -EINVAL; - /* Only alloc on first setup */ chip = spi_get_ctldata(spi); if (!chip) { @@ -660,16 +645,12 @@ static int dw_spi_setup(struct spi_device *spi) chip->enable_dma = chip_info->enable_dma; } - if (spi->bits_per_word <= 8) { + if (spi->bits_per_word == 8) { chip->n_bytes = 1; chip->dma_width = 1; - } else if (spi->bits_per_word <= 16) { + } else if (spi->bits_per_word == 16) { chip->n_bytes = 2; chip->dma_width = 2; - } else { - /* Never take >16b case for MRST SPIC */ - dev_err(&spi->dev, "invalid wordsize\n"); - return -EINVAL; } chip->bits_per_word = spi->bits_per_word; @@ -824,6 +805,7 @@ int dw_spi_add_host(struct dw_spi *dws) } master->mode_bits = SPI_CPOL | SPI_CPHA; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); master->bus_num = dws->bus_num; master->num_chipselect = dws->num_cs; master->cleanup = dw_spi_cleanup; diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index d7bac60..f1b1497 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -296,12 +296,6 @@ static int ep93xx_spi_setup(struct spi_device *spi) struct ep93xx_spi *espi = spi_master_get_devdata(spi->master); struct ep93xx_spi_chip *chip; - if (spi->bits_per_word < 4 || spi->bits_per_word > 16) { - dev_err(&espi->pdev->dev, "invalid bits per word %d\n", - spi->bits_per_word); - return -EINVAL; - } - chip = spi_get_ctldata(spi); if (!chip) { dev_dbg(&espi->pdev->dev, "initial setup for %s\n", @@ -365,10 +359,6 @@ static int ep93xx_spi_transfer(struct spi_device *spi, struct spi_message *msg) /* first validate each transfer */ list_for_each_entry(t, &msg->transfers, transfer_list) { - if (t->bits_per_word) { - if (t->bits_per_word < 4 || t->bits_per_word > 16) - return -EINVAL; - } if (t->speed_hz && t->speed_hz < espi->min_rate) return -EINVAL; } @@ -1046,6 +1036,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = info->num_chipselect; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); platform_set_drvdata(pdev, master); diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 24610ca..0ef05f1 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -144,10 +144,6 @@ static int fsl_espi_setup_transfer(struct spi_device *spi, if (!bits_per_word) bits_per_word = spi->bits_per_word; - /* Make sure its a bit width we support [4..16] */ - if ((bits_per_word < 4) || (bits_per_word > 16)) - return -EINVAL; - if (!hz) hz = spi->max_speed_hz; @@ -157,12 +153,10 @@ static int fsl_espi_setup_transfer(struct spi_device *spi, cs->get_tx = mpc8xxx_spi_tx_buf_u32; if (bits_per_word <= 8) { cs->rx_shift = 8 - bits_per_word; - } else if (bits_per_word <= 16) { + } else cs->rx_shift = 16 - bits_per_word; if (spi->mode & SPI_LSB_FIRST) cs->get_tx = fsl_espi_tx_buf_lsb; - } else { - return -EINVAL; } mpc8xxx_spi->rx_shift = cs->rx_shift; @@ -609,6 +603,7 @@ static struct spi_master * fsl_espi_probe(struct device *dev, if (ret) goto err_probe; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); master->setup = fsl_espi_setup; mpc8xxx_spi = spi_master_get_devdata(master); diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 0021fc4..a7801a8 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -239,9 +239,6 @@ static int spi_gpio_setup(struct spi_device *spi) struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); struct device_node *np = spi->master->dev.of_node; - if (spi->bits_per_word > 32) - return -EINVAL; - if (np) { /* * In DT environments, the CS GPIOs have already been @@ -446,6 +443,7 @@ static int spi_gpio_probe(struct platform_device *pdev) if (pdata) spi_gpio->pdata = *pdata; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->flags = master_flags; master->bus_num = pdev->id; master->num_chipselect = SPI_N_CHIPSEL; diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 0befeeb..cb88eeb 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -698,11 +698,10 @@ static int spi_imx_setupxfer(struct spi_device *spi, } else if (config.bpw <= 16) { spi_imx->rx = spi_imx_buf_rx_u16; spi_imx->tx = spi_imx_buf_tx_u16; - } else if (config.bpw <= 32) { + } spi_imx->rx = spi_imx_buf_rx_u32; spi_imx->tx = spi_imx_buf_tx_u32; - } else - BUG(); + } spi_imx->devtype_data->config(spi_imx, &config); @@ -783,6 +782,7 @@ static int spi_imx_probe(struct platform_device *pdev) platform_set_drvdata(pdev, master); + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->bus_num = pdev->id; master->num_chipselect = num_cs; diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c index 8498276..62b7e8e 100644 --- a/drivers/spi/spi-mxs.c +++ b/drivers/spi/spi-mxs.c @@ -75,12 +75,6 @@ static int mxs_spi_setup_transfer(struct spi_device *dev, if (t && t->bits_per_word) bits_per_word = t->bits_per_word; - if (bits_per_word != 8) { - dev_err(&dev->dev, "%s, unsupported bits_per_word=%d\n", - __func__, bits_per_word); - return -EINVAL; - } - hz = dev->max_speed_hz; if (t && t->speed_hz) hz = min(hz, t->speed_hz); @@ -548,6 +542,7 @@ static int mxs_spi_probe(struct platform_device *pdev) master->transfer_one_message = mxs_spi_transfer_one; master->setup = mxs_spi_setup; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->mode_bits = SPI_CPOL | SPI_CPHA; master->num_chipselect = 3; master->dev.of_node = np; diff --git a/drivers/spi/spi-nuc900.c b/drivers/spi/spi-nuc900.c index b3f9ec8..94efa2c 100644 --- a/drivers/spi/spi-nuc900.c +++ b/drivers/spi/spi-nuc900.c @@ -174,17 +174,6 @@ static void nuc900_spi_gobusy(struct nuc900_spi *hw) spin_unlock_irqrestore(&hw->lock, flags); } -static int nuc900_spi_setupxfer(struct spi_device *spi, - struct spi_transfer *t) -{ - return 0; -} - -static int nuc900_spi_setup(struct spi_device *spi) -{ - return 0; -} - static inline unsigned int hw_txbyte(struct nuc900_spi *hw, int count) { return hw->tx ? hw->tx[count] : 0; @@ -377,10 +366,8 @@ static int nuc900_spi_probe(struct platform_device *pdev) master->num_chipselect = hw->pdata->num_cs; master->bus_num = hw->pdata->bus_num; hw->bitbang.master = hw->master; - hw->bitbang.setup_transfer = nuc900_spi_setupxfer; hw->bitbang.chipselect = nuc900_spi_chipsel; hw->bitbang.txrx_bufs = nuc900_spi_txrx; - hw->bitbang.master->setup = nuc900_spi_setup; hw->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (hw->res == NULL) { diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c index 78d29a1..9137fcc 100644 --- a/drivers/spi/spi-omap-100k.c +++ b/drivers/spi/spi-omap-100k.c @@ -298,12 +298,6 @@ static int omap1_spi100k_setup(struct spi_device *spi) struct omap1_spi100k *spi100k; struct omap1_spi100k_cs *cs = spi->controller_state; - if (spi->bits_per_word < 4 || spi->bits_per_word > 32) { - dev_dbg(&spi->dev, "setup: unsupported %d bit words\n", - spi->bits_per_word); - return -EINVAL; - } - spi100k = spi_master_get_devdata(spi->master); if (!cs) { @@ -451,10 +445,7 @@ static int omap1_spi100k_transfer(struct spi_device *spi, struct spi_message *m) unsigned len = t->len; if (t->speed_hz > OMAP1_SPI100K_MAX_FREQ - || (len && !(rx_buf || tx_buf)) - || (t->bits_per_word && - ( t->bits_per_word < 4 - || t->bits_per_word > 32))) { + || (len && !(rx_buf || tx_buf))) { dev_dbg(&spi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n", t->speed_hz, len, @@ -509,6 +500,7 @@ static int omap1_spi100k_probe(struct platform_device *pdev) master->cleanup = NULL; master->num_chipselect = 2; master->mode_bits = MODEBITS; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); dev_set_drvdata(&pdev->dev, master); diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 86d2158..6246fb4 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -857,12 +857,6 @@ static int omap2_mcspi_setup(struct spi_device *spi) struct omap2_mcspi_dma *mcspi_dma; struct omap2_mcspi_cs *cs = spi->controller_state; - if (spi->bits_per_word < 4 || spi->bits_per_word > 32) { - dev_dbg(&spi->dev, "setup: unsupported %d bit words\n", - spi->bits_per_word); - return -EINVAL; - } - mcspi_dma = &mcspi->dma_channels[spi->chip_select]; if (!cs) { @@ -1072,10 +1066,7 @@ static int omap2_mcspi_transfer_one_message(struct spi_master *master, unsigned len = t->len; if (t->speed_hz > OMAP2_MCSPI_MAX_FREQ - || (len && !(rx_buf || tx_buf)) - || (t->bits_per_word && - ( t->bits_per_word < 4 - || t->bits_per_word > 32))) { + || (len && !(rx_buf || tx_buf))) { dev_dbg(mcspi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n", t->speed_hz, len, @@ -1196,7 +1187,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); master->setup = omap2_mcspi_setup; master->prepare_transfer_hardware = omap2_prepare_transfer; master->unprepare_transfer_hardware = omap2_unprepare_transfer; diff --git a/drivers/spi/spi-ppc4xx.c b/drivers/spi/spi-ppc4xx.c index 357f183..01df34b 100644 --- a/drivers/spi/spi-ppc4xx.c +++ b/drivers/spi/spi-ppc4xx.c @@ -190,12 +190,6 @@ static int spi_ppc4xx_setupxfer(struct spi_device *spi, struct spi_transfer *t) speed = min(t->speed_hz, spi->max_speed_hz); } - if (bits_per_word != 8) { - dev_err(&spi->dev, "invalid bits-per-word (%d)\n", - bits_per_word); - return -EINVAL; - } - if (!speed || (speed > spi->max_speed_hz)) { dev_err(&spi->dev, "invalid speed_hz (%d)\n", speed); return -EINVAL; @@ -229,12 +223,6 @@ static int spi_ppc4xx_setup(struct spi_device *spi) { struct spi_ppc4xx_cs *cs = spi->controller_state; - if (spi->bits_per_word != 8) { - dev_err(&spi->dev, "invalid bits-per-word (%d)\n", - spi->bits_per_word); - return -EINVAL; - } - if (!spi->max_speed_hz) { dev_err(&spi->dev, "invalid max_speed_hz (must be non-zero)\n"); return -EINVAL; @@ -465,6 +453,7 @@ static int spi_ppc4xx_of_probe(struct platform_device *op) bbp->use_dma = 0; bbp->master->setup = spi_ppc4xx_setup; bbp->master->cleanup = spi_ppc4xx_cleanup; + bbp->master->bits_per_word_mask = SPI_BPW_MASK(8); /* the spi->mode bits understood by this driver: */ bbp->master->mode_bits = diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index f5d84d6..7de2ca1 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -881,21 +881,6 @@ static int setup(struct spi_device *spi) rx_thres = RX_THRESH_DFLT; } - if (!pxa25x_ssp_comp(drv_data) - && (spi->bits_per_word < 4 || spi->bits_per_word > 32)) { - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " - "b/w not 4-32 for type non-PXA25x_SSP\n", - drv_data->ssp_type, spi->bits_per_word); - return -EINVAL; - } else if (pxa25x_ssp_comp(drv_data) - && (spi->bits_per_word < 4 - || spi->bits_per_word > 16)) { - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " - "b/w not 4-16 for type PXA25x_SSP\n", - drv_data->ssp_type, spi->bits_per_word); - return -EINVAL; - } - /* Only alloc on first setup */ chip = spi_get_ctldata(spi); if (!chip) { @@ -1011,9 +996,6 @@ static int setup(struct spi_device *spi) chip->n_bytes = 4; chip->read = u32_reader; chip->write = u32_writer; - } else { - dev_err(&spi->dev, "invalid wordsize\n"); - return -ENODEV; } chip->bits_per_word = spi->bits_per_word; @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) drv_data->ioaddr = ssp->mmio_base; drv_data->ssdr_physical = ssp->phys_base + SSDR; if (pxa25x_ssp_comp(drv_data)) { + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; drv_data->dma_cr1 = 0; drv_data->clear_sr = SSSR_ROR; drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; } else { + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; drv_data->dma_cr1 = DEFAULT_DMA_CR1; drv_data->clear_sr = SSSR_ROR | SSSR_TINT; diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 5000586..39a3824 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1314,7 +1314,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer; master->num_chipselect = sci->num_cs; master->dma_alignment = 8; - master->bits_per_word_mask = BIT(32 - 1) | BIT(16 - 1) | BIT(8 - 1); + master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) | + SPI_BPW_MASK(8); /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 0808cd5..77497be 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -425,10 +425,6 @@ spi_sirfsoc_setup_transfer(struct spi_device *spi, struct spi_transfer *t) rxfifo_ctrl = SIRFSOC_SPI_FIFO_THD(SIRFSOC_SPI_FIFO_SIZE / 2) | SIRFSOC_SPI_FIFO_WIDTH_DWORD; break; - default: - dev_err(&spi->dev, "Bits per word %d not supported\n", - bits_per_word); - return -EINVAL; } if (!(spi->mode & SPI_CS_HIGH)) @@ -556,6 +552,8 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) sspi->bitbang.txrx_bufs = spi_sirfsoc_transfer; sspi->bitbang.master->setup = spi_sirfsoc_setup; master->bus_num = pdev->id; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(12) | + SPI_BPW_MASK(16) | SPI_BPW_MASK(32); sspi->bitbang.master->dev.of_node = pdev->dev.of_node; sspi->p = pinctrl_get_select_default(&pdev->dev); diff --git a/drivers/spi/spi-ti-ssp.c b/drivers/spi/spi-ti-ssp.c index 46992ca..10606fc 100644 --- a/drivers/spi/spi-ti-ssp.c +++ b/drivers/spi/spi-ti-ssp.c @@ -237,14 +237,6 @@ static void ti_ssp_spi_work(struct work_struct *work) spin_unlock(&hw->lock); } -static int ti_ssp_spi_setup(struct spi_device *spi) -{ - if (spi->bits_per_word > 32) - return -EINVAL; - - return 0; -} - static int ti_ssp_spi_transfer(struct spi_device *spi, struct spi_message *m) { struct ti_ssp_spi *hw; @@ -269,12 +261,6 @@ static int ti_ssp_spi_transfer(struct spi_device *spi, struct spi_message *m) dev_err(&spi->dev, "invalid xfer, full duplex\n"); return -EINVAL; } - - if (t->bits_per_word > 32) { - dev_err(&spi->dev, "invalid xfer width %d\n", - t->bits_per_word); - return -EINVAL; - } } spin_lock(&hw->lock); @@ -337,8 +323,8 @@ static int ti_ssp_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = pdata->num_cs; master->mode_bits = MODE_BITS; + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); master->flags = SPI_MASTER_HALF_DUPLEX; - master->setup = ti_ssp_spi_setup; master->transfer = ti_ssp_spi_transfer; error = spi_register_master(master); diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 35f60bd..15cb39b 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -472,11 +472,6 @@ static int pch_spi_setup(struct spi_device *pspi) dev_dbg(&pspi->dev, "%s 8 bits per word\n", __func__); } - if ((pspi->bits_per_word != 8) && (pspi->bits_per_word != 16)) { - dev_err(&pspi->dev, "%s Invalid bits per word\n", __func__); - return -EINVAL; - } - /* Check baud rate setting */ /* if baud rate of chip is greater than max we can support,return error */ @@ -537,17 +532,6 @@ static int pch_spi_transfer(struct spi_device *pspi, struct spi_message *pmsg) /* if baud rate has been specified validate the same */ if (transfer->speed_hz > PCH_MAX_BAUDRATE) transfer->speed_hz = PCH_MAX_BAUDRATE; - - /* if bits per word has been specified validate the same */ - if (transfer->bits_per_word) { - if ((transfer->bits_per_word != 8) - && (transfer->bits_per_word != 16)) { - retval = -EINVAL; - dev_err(&pspi->dev, - "%s Invalid bits per word\n", __func__); - goto err_return_spinlock; - } - } } spin_unlock_irqrestore(&data->lock, flags); @@ -1442,6 +1426,7 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev) master->setup = pch_spi_setup; master->transfer = pch_spi_transfer; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); data->board_dat = board_dat; data->plat_dev = plat_dev; diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c index adb8530..cefd956 100644 --- a/drivers/spi/spi-txx9.c +++ b/drivers/spi/spi-txx9.c @@ -116,17 +116,12 @@ static void txx9spi_cs_func(struct spi_device *spi, struct txx9spi *c, static int txx9spi_setup(struct spi_device *spi) { struct txx9spi *c = spi_master_get_devdata(spi->master); - u8 bits_per_word; if (!spi->max_speed_hz || spi->max_speed_hz > c->max_speed_hz || spi->max_speed_hz < c->min_speed_hz) return -EINVAL; - bits_per_word = spi->bits_per_word; - if (bits_per_word != 8 && bits_per_word != 16) - return -EINVAL; - if (gpio_direction_output(spi->chip_select, !(spi->mode & SPI_CS_HIGH))) { dev_err(&spi->dev, "Cannot setup GPIO for chipselect.\n"); @@ -319,8 +314,6 @@ static int txx9spi_transfer(struct spi_device *spi, struct spi_message *m) if (!t->tx_buf && !t->rx_buf && t->len) return -EINVAL; - if (bits_per_word != 8 && bits_per_word != 16) - return -EINVAL; if (t->len & ((bits_per_word >> 3) - 1)) return -EINVAL; if (speed_hz < c->min_speed_hz || speed_hz > c->max_speed_hz) @@ -411,6 +404,7 @@ static int txx9spi_probe(struct platform_device *dev) master->setup = txx9spi_setup; master->transfer = txx9spi_transfer; master->num_chipselect = (u16)UINT_MAX; /* any GPIO numbers */ + master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16); ret = spi_register_master(master); if (ret) diff --git a/drivers/spi/spi-xcomm.c b/drivers/spi/spi-xcomm.c index 4d3ec8b..4258c71 100644 --- a/drivers/spi/spi-xcomm.c +++ b/drivers/spi/spi-xcomm.c @@ -76,7 +76,7 @@ static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm, { unsigned int speed; - if ((t->bits_per_word && t->bits_per_word != 8) || t->len > 62) + if (t->len > 62) return -EINVAL; speed = t->speed_hz ? t->speed_hz : spi->max_speed_hz; @@ -209,14 +209,6 @@ static int spi_xcomm_transfer_one(struct spi_master *master, return status; } -static int spi_xcomm_setup(struct spi_device *spi) -{ - if (spi->bits_per_word != 8) - return -EINVAL; - - return 0; -} - static int spi_xcomm_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -233,8 +225,8 @@ static int spi_xcomm_probe(struct i2c_client *i2c, master->num_chipselect = 16; master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_3WIRE; + master->bits_per_word_mask = SPI_BPW_MASK(8); master->flags = SPI_MASTER_HALF_DUPLEX; - master->setup = spi_xcomm_setup; master->transfer_one_message = spi_xcomm_transfer_one; master->dev.of_node = i2c->dev.of_node; i2c_set_clientdata(i2c, master); diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index e1d7696..f321bf9 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -232,21 +232,6 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, return 0; } -static int xilinx_spi_setup(struct spi_device *spi) -{ - /* always return 0, we can not check the number of bits. - * There are cases when SPI setup is called before any driver is - * there, in that case the SPI core defaults to 8 bits, which we - * do not support in some cases. But if we return an error, the - * SPI device would not be registered and no driver can get hold of it - * When the driver is there, it will call SPI setup again with the - * correct number of bits per transfer. - * If a driver setups with the wrong bit number, it will fail when - * it tries to do a transfer - */ - return 0; -} - static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi) { u8 sr; @@ -377,7 +362,6 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem, xspi->bitbang.chipselect = xilinx_spi_chipselect; xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer; xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs; - xspi->bitbang.master->setup = xilinx_spi_setup; init_completion(&xspi->done); if (!request_mem_region(mem->start, resource_size(mem), -- 1.7.10.4 ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may ^ permalink raw reply related [flat|nested] 18+ messages in thread
* RE: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-05-22 2:36 ` Stephen Warren @ 2013-05-24 17:16 ` H Hartley Sweeten -1 siblings, 0 replies; 18+ messages in thread From: H Hartley Sweeten @ 2013-05-24 17:16 UTC (permalink / raw) To: Stephen Warren, Mark Brown, Grant Likely Cc: spi-devel-general, Mike Frysinger, linux-kernel, device-drivers-devel On Tuesday, May 21, 2013 7:37 PM, Stephen Warren wrote: > > Fill in the recently added spi_master.bits_per_word_mask field in as > many drivers as possible. Make related cleanups, such as removing any > redundant error-checking, or empty setup callbacks. > > Cc: device-drivers-devel@blackfin.uclinux.org > Cc: Mike Frysinger <vapier@gentoo.org> > Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> > --- <snip> > drivers/spi/spi-ep93xx.c | 11 +---------- <snip> > diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c > index d7bac60..f1b1497 100644 > --- a/drivers/spi/spi-ep93xx.c > +++ b/drivers/spi/spi-ep93xx.c > @@ -296,12 +296,6 @@ static int ep93xx_spi_setup(struct spi_device *spi) > struct ep93xx_spi *espi = spi_master_get_devdata(spi->master); > struct ep93xx_spi_chip *chip; > > - if (spi->bits_per_word < 4 || spi->bits_per_word > 16) { > - dev_err(&espi->pdev->dev, "invalid bits per word %d\n", > - spi->bits_per_word); > - return -EINVAL; > - } > - > chip = spi_get_ctldata(spi); > if (!chip) { > dev_dbg(&espi->pdev->dev, "initial setup for %s\n", > @@ -365,10 +359,6 @@ static int ep93xx_spi_transfer(struct spi_device *spi, struct spi_message *msg) > > /* first validate each transfer */ > list_for_each_entry(t, &msg->transfers, transfer_list) { > - if (t->bits_per_word) { > - if (t->bits_per_word < 4 || t->bits_per_word > 16) > - return -EINVAL; > - } > if (t->speed_hz && t->speed_hz < espi->min_rate) > return -EINVAL; > } > @@ -1046,6 +1036,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev) > master->bus_num = pdev->id; > master->num_chipselect = info->num_chipselect; > master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); > > platform_set_drvdata(pdev, master); Seems reasonable. For the spi-ep93xx driver: Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> ^ permalink raw reply [flat|nested] 18+ messages in thread
* RE: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-24 17:16 ` H Hartley Sweeten 0 siblings, 0 replies; 18+ messages in thread From: H Hartley Sweeten @ 2013-05-24 17:16 UTC (permalink / raw) To: Stephen Warren, Mark Brown, Grant Likely Cc: spi-devel-general, Mike Frysinger, linux-kernel, device-drivers-devel On Tuesday, May 21, 2013 7:37 PM, Stephen Warren wrote: > > Fill in the recently added spi_master.bits_per_word_mask field in as > many drivers as possible. Make related cleanups, such as removing any > redundant error-checking, or empty setup callbacks. > > Cc: device-drivers-devel@blackfin.uclinux.org > Cc: Mike Frysinger <vapier@gentoo.org> > Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> > --- <snip> > drivers/spi/spi-ep93xx.c | 11 +---------- <snip> > diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c > index d7bac60..f1b1497 100644 > --- a/drivers/spi/spi-ep93xx.c > +++ b/drivers/spi/spi-ep93xx.c > @@ -296,12 +296,6 @@ static int ep93xx_spi_setup(struct spi_device *spi) > struct ep93xx_spi *espi = spi_master_get_devdata(spi->master); > struct ep93xx_spi_chip *chip; > > - if (spi->bits_per_word < 4 || spi->bits_per_word > 16) { > - dev_err(&espi->pdev->dev, "invalid bits per word %d\n", > - spi->bits_per_word); > - return -EINVAL; > - } > - > chip = spi_get_ctldata(spi); > if (!chip) { > dev_dbg(&espi->pdev->dev, "initial setup for %s\n", > @@ -365,10 +359,6 @@ static int ep93xx_spi_transfer(struct spi_device *spi, struct spi_message *msg) > > /* first validate each transfer */ > list_for_each_entry(t, &msg->transfers, transfer_list) { > - if (t->bits_per_word) { > - if (t->bits_per_word < 4 || t->bits_per_word > 16) > - return -EINVAL; > - } > if (t->speed_hz && t->speed_hz < espi->min_rate) > return -EINVAL; > } > @@ -1046,6 +1036,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev) > master->bus_num = pdev->id; > master->num_chipselect = info->num_chipselect; > master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); > > platform_set_drvdata(pdev, master); Seems reasonable. For the spi-ep93xx driver: Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-05-22 2:36 ` Stephen Warren (?) (?) @ 2013-05-29 19:49 ` Mark Brown -1 siblings, 0 replies; 18+ messages in thread From: Mark Brown @ 2013-05-29 19:49 UTC (permalink / raw) To: Stephen Warren Cc: Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger [-- Attachment #1: Type: text/plain, Size: 279 bytes --] On Tue, May 21, 2013 at 08:36:35PM -0600, Stephen Warren wrote: > Fill in the recently added spi_master.bits_per_word_mask field in as > many drivers as possible. Make related cleanups, such as removing any > redundant error-checking, or empty setup callbacks. Applied, thanks. [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-31 8:45 ` Arnd Bergmann 0 siblings, 0 replies; 18+ messages in thread From: Arnd Bergmann @ 2013-05-31 8:45 UTC (permalink / raw) To: Stephen Warren Cc: Mark Brown, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger Can you check this part again: On Tuesday 21 May 2013 20:36:35 Stephen Warren wrote: > diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c > index f5d84d6..7de2ca1 100644 > --- a/drivers/spi/spi-pxa2xx.c > +++ b/drivers/spi/spi-pxa2xx.c > @@ -881,21 +881,6 @@ static int setup(struct spi_device *spi) > rx_thres = RX_THRESH_DFLT; > } > > - if (!pxa25x_ssp_comp(drv_data) > - && (spi->bits_per_word < 4 || spi->bits_per_word > 32)) { > - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " > - "b/w not 4-32 for type non-PXA25x_SSP\n", > - drv_data->ssp_type, spi->bits_per_word); > - return -EINVAL; > - } else if (pxa25x_ssp_comp(drv_data) > - && (spi->bits_per_word < 4 > - || spi->bits_per_word > 16)) { > - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " > - "b/w not 4-16 for type PXA25x_SSP\n", > - drv_data->ssp_type, spi->bits_per_word); > - return -EINVAL; > - } > - > /* Only alloc on first setup */ > chip = spi_get_ctldata(spi); > if (!chip) { > @@ -1011,9 +996,6 @@ static int setup(struct spi_device *spi) > chip->n_bytes = 4; > chip->read = u32_reader; > chip->write = u32_writer; > - } else { > - dev_err(&spi->dev, "invalid wordsize\n"); > - return -ENODEV; > } > chip->bits_per_word = spi->bits_per_word; > > @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) > drv_data->ioaddr = ssp->mmio_base; > drv_data->ssdr_physical = ssp->phys_base + SSDR; > if (pxa25x_ssp_comp(drv_data)) { > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); > drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; > drv_data->dma_cr1 = 0; > drv_data->clear_sr = SSSR_ROR; > drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; > } else { > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; > drv_data->dma_cr1 = DEFAULT_DMA_CR1; > drv_data->clear_sr = SSSR_ROR | SSSR_TINT; I get a new build warning drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); ^ Arnd ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-31 8:45 ` Arnd Bergmann 0 siblings, 0 replies; 18+ messages in thread From: Arnd Bergmann @ 2013-05-31 8:45 UTC (permalink / raw) To: Stephen Warren Cc: Mike Frysinger, linux-kernel-u79uwXL29TY76Z2rM5mHXA, Mark Brown, device-drivers-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b, Grant Likely, spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f Can you check this part again: On Tuesday 21 May 2013 20:36:35 Stephen Warren wrote: > diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c > index f5d84d6..7de2ca1 100644 > --- a/drivers/spi/spi-pxa2xx.c > +++ b/drivers/spi/spi-pxa2xx.c > @@ -881,21 +881,6 @@ static int setup(struct spi_device *spi) > rx_thres = RX_THRESH_DFLT; > } > > - if (!pxa25x_ssp_comp(drv_data) > - && (spi->bits_per_word < 4 || spi->bits_per_word > 32)) { > - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " > - "b/w not 4-32 for type non-PXA25x_SSP\n", > - drv_data->ssp_type, spi->bits_per_word); > - return -EINVAL; > - } else if (pxa25x_ssp_comp(drv_data) > - && (spi->bits_per_word < 4 > - || spi->bits_per_word > 16)) { > - dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d " > - "b/w not 4-16 for type PXA25x_SSP\n", > - drv_data->ssp_type, spi->bits_per_word); > - return -EINVAL; > - } > - > /* Only alloc on first setup */ > chip = spi_get_ctldata(spi); > if (!chip) { > @@ -1011,9 +996,6 @@ static int setup(struct spi_device *spi) > chip->n_bytes = 4; > chip->read = u32_reader; > chip->write = u32_writer; > - } else { > - dev_err(&spi->dev, "invalid wordsize\n"); > - return -ENODEV; > } > chip->bits_per_word = spi->bits_per_word; > > @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) > drv_data->ioaddr = ssp->mmio_base; > drv_data->ssdr_physical = ssp->phys_base + SSDR; > if (pxa25x_ssp_comp(drv_data)) { > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); > drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; > drv_data->dma_cr1 = 0; > drv_data->clear_sr = SSSR_ROR; > drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; > } else { > + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; > drv_data->dma_cr1 = DEFAULT_DMA_CR1; > drv_data->clear_sr = SSSR_ROR | SSSR_TINT; I get a new build warning drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); ^ Arnd ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-05-31 8:45 ` Arnd Bergmann @ 2013-05-31 16:10 ` Stephen Warren -1 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-31 16:10 UTC (permalink / raw) To: Arnd Bergmann Cc: Mark Brown, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger On 05/31/2013 02:45 AM, Arnd Bergmann wrote: > Can you check this part again: > > On Tuesday 21 May 2013 20:36:35 Stephen Warren wrote: >> diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c ... >> @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) >> drv_data->ioaddr = ssp->mmio_base; >> drv_data->ssdr_physical = ssp->phys_base + SSDR; >> if (pxa25x_ssp_comp(drv_data)) { >> + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); >> drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; >> drv_data->dma_cr1 = 0; >> drv_data->clear_sr = SSSR_ROR; >> drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; >> } else { >> + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); >> drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; >> drv_data->dma_cr1 = DEFAULT_DMA_CR1; >> drv_data->clear_sr = SSSR_ROR | SSSR_TINT; > > I get a new build warning > > drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': > drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] > master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > ^ That should be fixed by the patches I sent yesterday. ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-31 16:10 ` Stephen Warren 0 siblings, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-05-31 16:10 UTC (permalink / raw) To: Arnd Bergmann Cc: Mike Frysinger, linux-kernel-u79uwXL29TY76Z2rM5mHXA, Mark Brown, device-drivers-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b, Grant Likely, spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f On 05/31/2013 02:45 AM, Arnd Bergmann wrote: > Can you check this part again: > > On Tuesday 21 May 2013 20:36:35 Stephen Warren wrote: >> diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c ... >> @@ -1190,11 +1172,13 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) >> drv_data->ioaddr = ssp->mmio_base; >> drv_data->ssdr_physical = ssp->phys_base + SSDR; >> if (pxa25x_ssp_comp(drv_data)) { >> + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); >> drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE; >> drv_data->dma_cr1 = 0; >> drv_data->clear_sr = SSSR_ROR; >> drv_data->mask_sr = SSSR_RFS | SSSR_TFS | SSSR_ROR; >> } else { >> + master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); >> drv_data->int_cr1 = SSCR1_TIE | SSCR1_RIE | SSCR1_TINTE; >> drv_data->dma_cr1 = DEFAULT_DMA_CR1; >> drv_data->clear_sr = SSSR_ROR | SSSR_TINT; > > I get a new build warning > > drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': > drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] > master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > ^ That should be fixed by the patches I sent yesterday. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-31 21:23 ` Arnd Bergmann 0 siblings, 0 replies; 18+ messages in thread From: Arnd Bergmann @ 2013-05-31 21:23 UTC (permalink / raw) To: Stephen Warren Cc: Mark Brown, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger On Friday 31 May 2013, Stephen Warren wrote: > > drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': > > drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] > > master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > > ^ > > That should be fixed by the patches I sent yesterday. Cool, thanks! Arnd ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask @ 2013-05-31 21:23 ` Arnd Bergmann 0 siblings, 0 replies; 18+ messages in thread From: Arnd Bergmann @ 2013-05-31 21:23 UTC (permalink / raw) To: Stephen Warren Cc: Mike Frysinger, linux-kernel-u79uwXL29TY76Z2rM5mHXA, Mark Brown, device-drivers-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b, Grant Likely, spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f On Friday 31 May 2013, Stephen Warren wrote: > > drivers/spi/spi-pxa2xx.c: In function 'pxa2xx_spi_probe': > > drivers/spi/spi-pxa2xx.c:1152:3: warning: left shift count >= width of type [enabled by default] > > master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); > > ^ > > That should be fixed by the patches I sent yesterday. Cool, thanks! Arnd ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-05-22 2:36 ` Stephen Warren ` (3 preceding siblings ...) (?) @ 2013-07-09 15:47 ` Michal Simek 2013-07-09 15:50 ` Stephen Warren 2013-07-09 21:49 ` Mark Brown -1 siblings, 2 replies; 18+ messages in thread From: Michal Simek @ 2013-07-09 15:47 UTC (permalink / raw) To: Stephen Warren Cc: Mark Brown, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger [-- Attachment #1: Type: text/plain, Size: 2131 bytes --] > diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c > index e1d7696..f321bf9 100644 > --- a/drivers/spi/spi-xilinx.c > +++ b/drivers/spi/spi-xilinx.c > @@ -232,21 +232,6 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, > return 0; > } > > -static int xilinx_spi_setup(struct spi_device *spi) > -{ > - /* always return 0, we can not check the number of bits. > - * There are cases when SPI setup is called before any driver is > - * there, in that case the SPI core defaults to 8 bits, which we > - * do not support in some cases. But if we return an error, the > - * SPI device would not be registered and no driver can get hold of it > - * When the driver is there, it will call SPI setup again with the > - * correct number of bits per transfer. > - * If a driver setups with the wrong bit number, it will fail when > - * it tries to do a transfer > - */ > - return 0; > -} > - > static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi) > { > u8 sr; > @@ -377,7 +362,6 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem, > xspi->bitbang.chipselect = xilinx_spi_chipselect; > xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer; > xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs; > - xspi->bitbang.master->setup = xilinx_spi_setup; > init_completion(&xspi->done); > > if (!request_mem_region(mem->start, resource_size(mem), > This part of this patch is breaking xilinx spi driver because when spi_bitbang_start is called it goes through some if else... and because bitbang->txrx_bufs is defined it end up in this code } else if (!master->setup) { return -EINVAL; } Probably the best solution is just revert this part of patch. Mark: What do you think? Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 263 bytes --] ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-07-09 15:47 ` Michal Simek @ 2013-07-09 15:50 ` Stephen Warren 2013-07-09 21:49 ` Mark Brown 1 sibling, 0 replies; 18+ messages in thread From: Stephen Warren @ 2013-07-09 15:50 UTC (permalink / raw) To: monstr Cc: Mark Brown, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger On 07/09/2013 09:47 AM, Michal Simek wrote: >> diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c >> index e1d7696..f321bf9 100644 --- a/drivers/spi/spi-xilinx.c +++ >> b/drivers/spi/spi-xilinx.c @@ -232,21 +232,6 @@ static int >> xilinx_spi_setup_transfer(struct spi_device *spi, return 0; } >> >> -static int xilinx_spi_setup(struct spi_device *spi) -{ - /* >> always return 0, we can not check the number of bits. - * There >> are cases when SPI setup is called before any driver is - * >> there, in that case the SPI core defaults to 8 bits, which we - >> * do not support in some cases. But if we return an error, the - >> * SPI device would not be registered and no driver can get hold >> of it - * When the driver is there, it will call SPI setup again >> with the - * correct number of bits per transfer. - * If a >> driver setups with the wrong bit number, it will fail when - * >> it tries to do a transfer - */ - return 0; -} - static void >> xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi) { u8 sr; @@ >> -377,7 +362,6 @@ struct spi_master *xilinx_spi_init(struct device >> *dev, struct resource *mem, xspi->bitbang.chipselect = >> xilinx_spi_chipselect; xspi->bitbang.setup_transfer = >> xilinx_spi_setup_transfer; xspi->bitbang.txrx_bufs = >> xilinx_spi_txrx_bufs; - xspi->bitbang.master->setup = >> xilinx_spi_setup; init_completion(&xspi->done); >> >> if (!request_mem_region(mem->start, resource_size(mem), >> > > This part of this patch is breaking xilinx spi driver because when > spi_bitbang_start is called it goes through some if else... and > because bitbang->txrx_bufs is defined it end up in this code } else > if (!master->setup) { return -EINVAL; } > > Probably the best solution is just revert this part of patch. Mark: > What do you think? Hmm. Why is master->setup required by the bitbang driver, if it's legal (i.e. the code works) to implement it just by doing nothing? ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-07-09 15:47 ` Michal Simek 2013-07-09 15:50 ` Stephen Warren @ 2013-07-09 21:49 ` Mark Brown 2013-07-09 21:56 ` Mark Brown 1 sibling, 1 reply; 18+ messages in thread From: Mark Brown @ 2013-07-09 21:49 UTC (permalink / raw) To: Michal Simek Cc: Stephen Warren, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger [-- Attachment #1: Type: text/plain, Size: 250 bytes --] On Tue, Jul 09, 2013 at 05:47:04PM +0200, Michal Simek wrote: > Probably the best solution is just revert this part of patch. > Mark: What do you think? We should make it so that the user does not need to supply empty functions if none are needed. [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 2/2] spi: convert drivers to use bits_per_word_mask 2013-07-09 21:49 ` Mark Brown @ 2013-07-09 21:56 ` Mark Brown 0 siblings, 0 replies; 18+ messages in thread From: Mark Brown @ 2013-07-09 21:56 UTC (permalink / raw) To: Michal Simek Cc: Stephen Warren, Grant Likely, spi-devel-general, linux-kernel, device-drivers-devel, Mike Frysinger [-- Attachment #1: Type: text/plain, Size: 492 bytes --] On Tue, Jul 09, 2013 at 10:49:10PM +0100, Mark Brown wrote: > On Tue, Jul 09, 2013 at 05:47:04PM +0200, Michal Simek wrote: > > > Probably the best solution is just revert this part of patch. > > Mark: What do you think? > > We should make it so that the user does not need to supply empty > functions if none are needed. ...though this is stuff that went to Linus in the merge window so as a bug fix we should restore that function then for v3.12 we should do the proper fix. [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH 1/2] spi: introduce macros to set bits_per_word_mask 2013-05-22 2:36 ` Stephen Warren (?) (?) @ 2013-05-22 15:58 ` Mark Brown -1 siblings, 0 replies; 18+ messages in thread From: Mark Brown @ 2013-05-22 15:58 UTC (permalink / raw) To: Stephen Warren; +Cc: Grant Likely, spi-devel-general, linux-kernel [-- Attachment #1: Type: text/plain, Size: 226 bytes --] On Tue, May 21, 2013 at 08:36:34PM -0600, Stephen Warren wrote: > Introduce two macros to make setting up spi_master.bits_per_word_mask > easier, and avoid mistakes like writing BIT(n) instead of BIT(n - 1). Applied, thanks. [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2013-07-09 21:58 UTC | newest] Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-05-22 2:36 [PATCH 1/2] spi: introduce macros to set bits_per_word_mask Stephen Warren 2013-05-22 2:36 ` Stephen Warren 2013-05-22 2:36 ` [PATCH 2/2] spi: convert drivers to use bits_per_word_mask Stephen Warren 2013-05-22 2:36 ` Stephen Warren 2013-05-24 17:16 ` H Hartley Sweeten 2013-05-24 17:16 ` H Hartley Sweeten 2013-05-29 19:49 ` Mark Brown 2013-05-31 8:45 ` Arnd Bergmann 2013-05-31 8:45 ` Arnd Bergmann 2013-05-31 16:10 ` Stephen Warren 2013-05-31 16:10 ` Stephen Warren 2013-05-31 21:23 ` Arnd Bergmann 2013-05-31 21:23 ` Arnd Bergmann 2013-07-09 15:47 ` Michal Simek 2013-07-09 15:50 ` Stephen Warren 2013-07-09 21:49 ` Mark Brown 2013-07-09 21:56 ` Mark Brown 2013-05-22 15:58 ` [PATCH 1/2] spi: introduce macros to set bits_per_word_mask Mark Brown
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