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spi: Fixes for v6.1

Browse Source 
A relatively large batch of fixes here but all device specific, plus an
 update to MAINTAINERS.  The summary print change to the STM32 driver is
 fixing an issue where the driver could easily end up spamming the logs
 with something that should be a debug message.
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Merge tag 'spi-fix-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A relatively large batch of fixes here but all device specific, plus
  an update to MAINTAINERS.

  The summary print change to the STM32 driver is fixing an issue where
  the driver could easily end up spamming the logs with something that
  should be a debug message"

* tag 'spi-fix-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: amd: Fix SPI_SPD7 value
  spi: stm32: fix stm32_spi_prepare_mbr() that halves spi clk for every run
  spi: meson-spicc: fix do_div build error on non-arm64
  spi: intel: Use correct mask for flash and protected regions
  spi: mediatek: Fix package division error
  spi: tegra210-quad: Don't initialise DMA if not supported
  MAINTAINERS: Update HiSilicon SFC Driver maintainer
  spi: meson-spicc: move wait completion in driver to take bursts delay in account
  spi: stm32: Print summary 'callbacks suppressed' message
This commit is contained in:
Linus Torvalds 2022-11-11 09:13:52 -08:00
commit a83e18ccc4
7 changed files with 49 additions and 19 deletions
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2
MAINTAINERS
View File

@ -9341,7 +9341,7 @@ S: Maintained
F: drivers/crypto/hisilicon/trng/trng.c
HISILICON V3XX SPI NOR FLASH Controller Driver
M: John Garry <john.garry@huawei.com>
M: Jay Fang <f.fangjian@huawei.com>
S: Maintained
W: http://www.hisilicon.com
F: drivers/spi/spi-hisi-sfc-v3xx.c

2
drivers/spi/spi-amd.c
View File

@ -65,7 +65,7 @@ enum amd_spi_speed {
F_16_66MHz,
F_100MHz,
F_800KHz,
SPI_SPD7,
SPI_SPD7 = 0x7,
F_50MHz = 0x4,
F_4MHz = 0x32,
F_3_17MHz = 0x3F

8
drivers/spi/spi-intel.c
View File

@ -52,17 +52,17 @@
#define FRACC 0x50
#define FREG(n) (0x54 + ((n) * 4))
#define FREG_BASE_MASK 0x3fff
#define FREG_BASE_MASK GENMASK(14, 0)
#define FREG_LIMIT_SHIFT 16
#define FREG_LIMIT_MASK (0x03fff << FREG_LIMIT_SHIFT)
#define FREG_LIMIT_MASK GENMASK(30, 16)
/* Offset is from @ispi->pregs */
#define PR(n) ((n) * 4)
#define PR_WPE BIT(31)
#define PR_LIMIT_SHIFT 16
#define PR_LIMIT_MASK (0x3fff << PR_LIMIT_SHIFT)
#define PR_LIMIT_MASK GENMASK(30, 16)
#define PR_RPE BIT(15)
#define PR_BASE_MASK 0x3fff
#define PR_BASE_MASK GENMASK(14, 0)
/* Offsets are from @ispi->sregs */
#define SSFSTS_CTL 0x00

24
drivers/spi/spi-meson-spicc.c
View File

@ -160,6 +160,7 @@ struct meson_spicc_device {
struct clk *clk;
struct spi_message *message;
struct spi_transfer *xfer;
struct completion done;
const struct meson_spicc_data *data;
u8 *tx_buf;
u8 *rx_buf;
@ -282,7 +283,7 @@ static irqreturn_t meson_spicc_irq(int irq, void *data)
/* Disable all IRQs */
writel(0, spicc->base + SPICC_INTREG);
spi_finalize_current_transfer(spicc->master);
complete(&spicc->done);
return IRQ_HANDLED;
}
@ -386,6 +387,7 @@ static int meson_spicc_transfer_one(struct spi_master *master,
struct spi_transfer *xfer)
{
struct meson_spicc_device *spicc = spi_master_get_devdata(master);
uint64_t timeout;
/* Store current transfer */
spicc->xfer = xfer;
@ -410,13 +412,29 @@ static int meson_spicc_transfer_one(struct spi_master *master,
/* Setup burst */
meson_spicc_setup_burst(spicc);
/* Setup wait for completion */
reinit_completion(&spicc->done);
/* For each byte we wait for 8 cycles of the SPI clock */
timeout = 8LL * MSEC_PER_SEC * xfer->len;
do_div(timeout, xfer->speed_hz);
/* Add 10us delay between each fifo bursts */
timeout += ((xfer->len >> 4) * 10) / MSEC_PER_SEC;
/* Increase it twice and add 200 ms tolerance */
timeout += timeout + 200;
/* Start burst */
writel_bits_relaxed(SPICC_XCH, SPICC_XCH, spicc->base + SPICC_CONREG);
/* Enable interrupts */
writel_relaxed(SPICC_TC_EN, spicc->base + SPICC_INTREG);
return 1;
if (!wait_for_completion_timeout(&spicc->done, msecs_to_jiffies(timeout)))
return -ETIMEDOUT;
return 0;
}
static int meson_spicc_prepare_message(struct spi_master *master,
@ -743,6 +761,8 @@ static int meson_spicc_probe(struct platform_device *pdev)
spicc->pdev = pdev;
platform_set_drvdata(pdev, spicc);
init_completion(&spicc->done);
spicc->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(spicc->base)) {
dev_err(&pdev->dev, "io resource mapping failed\n");

19
drivers/spi/spi-mt65xx.c
View File

@ -551,14 +551,17 @@ static void mtk_spi_enable_transfer(struct spi_master *master)
writel(cmd, mdata->base + SPI_CMD_REG);
}
static int mtk_spi_get_mult_delta(u32 xfer_len)
static int mtk_spi_get_mult_delta(struct mtk_spi *mdata, u32 xfer_len)
{
u32 mult_delta;
u32 mult_delta = 0;
if (mdata->dev_comp->ipm_design) {
if (xfer_len > MTK_SPI_IPM_PACKET_SIZE)
mult_delta = xfer_len % MTK_SPI_IPM_PACKET_SIZE;
} else {
if (xfer_len > MTK_SPI_PACKET_SIZE)
mult_delta = xfer_len % MTK_SPI_PACKET_SIZE;
else
mult_delta = 0;
}
return mult_delta;
}
@ -570,22 +573,22 @@ static void mtk_spi_update_mdata_len(struct spi_master *master)
if (mdata->tx_sgl_len && mdata->rx_sgl_len) {
if (mdata->tx_sgl_len > mdata->rx_sgl_len) {
mult_delta = mtk_spi_get_mult_delta(mdata->rx_sgl_len);
mult_delta = mtk_spi_get_mult_delta(mdata, mdata->rx_sgl_len);
mdata->xfer_len = mdata->rx_sgl_len - mult_delta;
mdata->rx_sgl_len = mult_delta;
mdata->tx_sgl_len -= mdata->xfer_len;
} else {
mult_delta = mtk_spi_get_mult_delta(mdata->tx_sgl_len);
mult_delta = mtk_spi_get_mult_delta(mdata, mdata->tx_sgl_len);
mdata->xfer_len = mdata->tx_sgl_len - mult_delta;
mdata->tx_sgl_len = mult_delta;
mdata->rx_sgl_len -= mdata->xfer_len;
}
} else if (mdata->tx_sgl_len) {
mult_delta = mtk_spi_get_mult_delta(mdata->tx_sgl_len);
mult_delta = mtk_spi_get_mult_delta(mdata, mdata->tx_sgl_len);
mdata->xfer_len = mdata->tx_sgl_len - mult_delta;
mdata->tx_sgl_len = mult_delta;
} else if (mdata->rx_sgl_len) {
mult_delta = mtk_spi_get_mult_delta(mdata->rx_sgl_len);
mult_delta = mtk_spi_get_mult_delta(mdata, mdata->rx_sgl_len);
mdata->xfer_len = mdata->rx_sgl_len - mult_delta;
mdata->rx_sgl_len = mult_delta;
}

3
drivers/spi/spi-stm32.c
View File

@ -434,7 +434,7 @@ static int stm32_spi_prepare_mbr(struct stm32_spi *spi, u32 speed_hz,
u32 div, mbrdiv;
/* Ensure spi->clk_rate is even */
div = DIV_ROUND_UP(spi->clk_rate & ~0x1, speed_hz);
div = DIV_ROUND_CLOSEST(spi->clk_rate & ~0x1, speed_hz);
/*
* SPI framework set xfer->speed_hz to master->max_speed_hz if
@ -886,6 +886,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id)
static DEFINE_RATELIMIT_STATE(rs,
DEFAULT_RATELIMIT_INTERVAL * 10,
1);
ratelimit_set_flags(&rs, RATELIMIT_MSG_ON_RELEASE);
if (__ratelimit(&rs))
dev_dbg_ratelimited(spi->dev, "Communication suspended\n");
if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0)))

6
drivers/spi/spi-tegra210-quad.c
View File

@ -720,6 +720,9 @@ static int tegra_qspi_start_cpu_based_transfer(struct tegra_qspi *qspi, struct s
static void tegra_qspi_deinit_dma(struct tegra_qspi *tqspi)
{
if (!tqspi->soc_data->has_dma)
return;
if (tqspi->tx_dma_buf) {
dma_free_coherent(tqspi->dev, tqspi->dma_buf_size,
tqspi->tx_dma_buf, tqspi->tx_dma_phys);
@ -750,6 +753,9 @@ static int tegra_qspi_init_dma(struct tegra_qspi *tqspi)
u32 *dma_buf;
int err;
if (!tqspi->soc_data->has_dma)
return 0;
dma_chan = dma_request_chan(tqspi->dev, "rx");
if (IS_ERR(dma_chan)) {
err = PTR_ERR(dma_chan);