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-rw-r--r--drivers/spi/spi-amd.c2
-rw-r--r--drivers/spi/spi-intel.c8
-rw-r--r--drivers/spi/spi-meson-spicc.c24
-rw-r--r--drivers/spi/spi-mt65xx.c23
-rw-r--r--drivers/spi/spi-stm32.c3
-rw-r--r--drivers/spi/spi-tegra210-quad.c6
6 files changed, 48 insertions, 18 deletions
diff --git a/drivers/spi/spi-amd.c b/drivers/spi/spi-amd.c
index e23121456c70..bfc3ab5f39ea 100644
--- a/drivers/spi/spi-amd.c
+++ b/drivers/spi/spi-amd.c
@@ -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
diff --git a/drivers/spi/spi-intel.c b/drivers/spi/spi-intel.c
index 605acb1bf4b0..3ac73691fbb5 100644
--- a/drivers/spi/spi-intel.c
+++ b/drivers/spi/spi-intel.c
@@ -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
diff --git a/drivers/spi/spi-meson-spicc.c b/drivers/spi/spi-meson-spicc.c
index bad201510a99..1b4195c54ee2 100644
--- a/drivers/spi/spi-meson-spicc.c
+++ b/drivers/spi/spi-meson-spicc.c
@@ -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");
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 11aeae7fe7fc..a33c9a3de395 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -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 (xfer_len > MTK_SPI_PACKET_SIZE)
- mult_delta = xfer_len % MTK_SPI_PACKET_SIZE;
- else
- 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;
+ }
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;
}
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index 6fe617b445a5..def09cf0dc14 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -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)))
diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index 904972606bd4..10f0c5a6e0dc 100644
--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.