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Date: Sat, 13 Nov 2021 00:30:06 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Serge Semin <Sergey.Semin@...kalelectronics.ru>,
Mark Brown <broonie@...nel.org>,
Nandhini Srikandan <nandhini.srikandan@...el.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Andy Shevchenko <andy@...nel.org>,
linux-spi <linux-spi@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] spi: dw: Put the driver entities naming in order
Hello Andy
On Fri, Nov 12, 2021 at 11:22:02PM +0200, Andy Shevchenko wrote:
> On Fri, Nov 12, 2021 at 10:51 PM Serge Semin
> <Sergey.Semin@...kalelectronics.ru> wrote:
> >
> > Mostly due to a long driver history it's methods and macro names look a
> > bit messy. In particularly that concerns the code their prefixes. A
> > biggest part of the driver functions and macros have got the dw_spi/DW_SPI
> > prefixes. But there are some entities which have been just
> > "spi_/SPI_"-prefixed. Especially that concerns the CSR and their fields
> > macro definitions. It makes the code harder to comprehend since such
> > methods and macros can be easily confused with the global SPI-subsystem
> > exports. In this case the only possible way to more or less quickly
> > distinguish one naming space from another is either by context or by the
> > argument type, which most of the times isn't that easy anyway. In addition
> > to that a new DW SSI IP-core support has been added in the framework of
> > commit e539f435cb9c ("spi: dw: Add support for DesignWare DWC_ssi"), which
> > introduced a new set or macro-prefixes to describe CTRLR0-specific fields
> > and worsen the situation. Finally there are methods with
> > no DW SPI driver-reference prefix at all, that make the code reading even
> > harder. So in order to ease the driver hacking let's bring the code naming
> > to a common base:
> > 1) Each method is supposed to have "dw_spi_" prefix so to be easily
> > distinguished from the kernel API, e.g. SPI-subsystem methods and macros.
> > (Exception is the local implementation of the readl/writel methods since
> > being just the regspace accessors.)
> > 2) Each generically used macro should have DW_SPI_-prefix thus being
> > easily comprehended as the local driver definition.
> > 3) DW APB SSI and DW SSI specific macros should have prefixes as DW_PSSI_
>
> In the compatible strings the parameter has "assi" and not "pssi".
> What did I miss?
You missed none. It's my mistake. Leftover from patch v0. Thanks for the heads up.
I'll fix it in v2.
-Sergey
>
> > and DW_HSSI_ respectively so referring to the system buses they support
> > (APB and AHB similarly to the DT clocks naming like pclk, hclk).
> >
> > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> >
> > ---
> >
> > Folks, any ideas of a better naming scheme especially for the DW APB SSI
> > and DW SSI specific macros are very welcome.
> > ---
> > drivers/spi/spi-dw-bt1.c | 8 +--
> > drivers/spi/spi-dw-core.c | 138 ++++++++++++++++++------------------
> > drivers/spi/spi-dw-dma.c | 50 ++++++-------
> > drivers/spi/spi-dw-mmio.c | 20 +++---
> > drivers/spi/spi-dw-pci.c | 59 ++++++++--------
> > drivers/spi/spi-dw.h | 145 +++++++++++++++++++-------------------
> > 6 files changed, 211 insertions(+), 209 deletions(-)
> >
> > diff --git a/drivers/spi/spi-dw-bt1.c b/drivers/spi/spi-dw-bt1.c
> > index 5be6b7b80c21..0411088dc443 100644
> > --- a/drivers/spi/spi-dw-bt1.c
> > +++ b/drivers/spi/spi-dw-bt1.c
> > @@ -123,7 +123,7 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
> > len = min_t(size_t, len, dwsbt1->map_len - offs);
> >
> > /* Collect the controller configuration required by the operation */
> > - cfg.tmode = SPI_TMOD_EPROMREAD;
> > + cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
> > cfg.dfs = 8;
> > cfg.ndf = 4;
> > cfg.freq = mem->spi->max_speed_hz;
> > @@ -131,13 +131,13 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
> > /* Make sure the corresponding CS is de-asserted on transmission */
> > dw_spi_set_cs(mem->spi, false);
> >
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> >
> > dw_spi_update_config(dws, mem->spi, &cfg);
> >
> > - spi_umask_intr(dws, SPI_INT_RXFI);
> > + dw_spi_umask_intr(dws, DW_SPI_INT_RXFI);
> >
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> >
> > /*
> > * Enable the transparent mode of the System Boot Controller.
> > diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
> > index f5446d9c6f27..4d91ffb5c0d8 100644
> > --- a/drivers/spi/spi-dw-core.c
> > +++ b/drivers/spi/spi-dw-core.c
> > @@ -24,7 +24,7 @@
> > #endif
> >
> > /* Slave spi_device related */
> > -struct chip_data {
> > +struct dw_spi_chip_data {
> > u32 cr0;
> > u32 rx_sample_dly; /* RX sample delay */
> > };
> > @@ -109,7 +109,7 @@ void dw_spi_set_cs(struct spi_device *spi, bool enable)
> > EXPORT_SYMBOL_GPL(dw_spi_set_cs);
> >
> > /* Return the max entries we can fill into tx fifo */
> > -static inline u32 tx_max(struct dw_spi *dws)
> > +static inline u32 dw_spi_tx_max(struct dw_spi *dws)
> > {
> > u32 tx_room, rxtx_gap;
> >
> > @@ -129,14 +129,14 @@ static inline u32 tx_max(struct dw_spi *dws)
> > }
> >
> > /* Return the max entries we should read out of rx fifo */
> > -static inline u32 rx_max(struct dw_spi *dws)
> > +static inline u32 dw_spi_rx_max(struct dw_spi *dws)
> > {
> > return min_t(u32, dws->rx_len, dw_readl(dws, DW_SPI_RXFLR));
> > }
> >
> > static void dw_writer(struct dw_spi *dws)
> > {
> > - u32 max = tx_max(dws);
> > + u32 max = dw_spi_tx_max(dws);
> > u32 txw = 0;
> >
> > while (max--) {
> > @@ -157,7 +157,7 @@ static void dw_writer(struct dw_spi *dws)
> >
> > static void dw_reader(struct dw_spi *dws)
> > {
> > - u32 max = rx_max(dws);
> > + u32 max = dw_spi_rx_max(dws);
> > u32 rxw;
> >
> > while (max--) {
> > @@ -186,24 +186,24 @@ int dw_spi_check_status(struct dw_spi *dws, bool raw)
> > else
> > irq_status = dw_readl(dws, DW_SPI_ISR);
> >
> > - if (irq_status & SPI_INT_RXOI) {
> > + if (irq_status & DW_SPI_INT_RXOI) {
> > dev_err(&dws->master->dev, "RX FIFO overflow detected\n");
> > ret = -EIO;
> > }
> >
> > - if (irq_status & SPI_INT_RXUI) {
> > + if (irq_status & DW_SPI_INT_RXUI) {
> > dev_err(&dws->master->dev, "RX FIFO underflow detected\n");
> > ret = -EIO;
> > }
> >
> > - if (irq_status & SPI_INT_TXOI) {
> > + if (irq_status & DW_SPI_INT_TXOI) {
> > dev_err(&dws->master->dev, "TX FIFO overflow detected\n");
> > ret = -EIO;
> > }
> >
> > /* Generically handle the erroneous situation */
> > if (ret) {
> > - spi_reset_chip(dws);
> > + dw_spi_reset_chip(dws);
> > if (dws->master->cur_msg)
> > dws->master->cur_msg->status = ret;
> > }
> > @@ -230,7 +230,7 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
> > */
> > dw_reader(dws);
> > if (!dws->rx_len) {
> > - spi_mask_intr(dws, 0xff);
> > + dw_spi_mask_intr(dws, 0xff);
> > spi_finalize_current_transfer(dws->master);
> > } else if (dws->rx_len <= dw_readl(dws, DW_SPI_RXFTLR)) {
> > dw_writel(dws, DW_SPI_RXFTLR, dws->rx_len - 1);
> > @@ -241,10 +241,10 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
> > * disabled after the data transmission is finished so not to
> > * have the TXE IRQ flood at the final stage of the transfer.
> > */
> > - if (irq_status & SPI_INT_TXEI) {
> > + if (irq_status & DW_SPI_INT_TXEI) {
> > dw_writer(dws);
> > if (!dws->tx_len)
> > - spi_mask_intr(dws, SPI_INT_TXEI);
> > + dw_spi_mask_intr(dws, DW_SPI_INT_TXEI);
> > }
> >
> > return IRQ_HANDLED;
> > @@ -260,7 +260,7 @@ static irqreturn_t dw_spi_irq(int irq, void *dev_id)
> > return IRQ_NONE;
> >
> > if (!master->cur_msg) {
> > - spi_mask_intr(dws, 0xff);
> > + dw_spi_mask_intr(dws, 0xff);
> > return IRQ_HANDLED;
> > }
> >
> > @@ -271,37 +271,37 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
> > {
> > u32 cr0 = 0;
> >
> > - if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
> > + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI)) {
> > /* CTRLR0[ 5: 4] Frame Format */
> > - cr0 |= SPI_FRF_MOTO_SPI << SPI_FRF_OFFSET;
> > + cr0 |= DW_SPI_CTRLR0_FRF_MOTO_SPI << DW_PSSI_CTRLR0_FRF_OFFSET;
> >
> > /*
> > * SPI mode (SCPOL|SCPH)
> > * CTRLR0[ 6] Serial Clock Phase
> > * CTRLR0[ 7] Serial Clock Polarity
> > */
> > - cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET;
> > - cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET;
> > + cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DW_PSSI_CTRLR0_SCOL_OFFSET;
> > + cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DW_PSSI_CTRLR0_SCPH_OFFSET;
> >
> > /* CTRLR0[11] Shift Register Loop */
> > - cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET;
> > + cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DW_PSSI_CTRLR0_SRL_OFFSET;
> > } else {
> > /* CTRLR0[ 7: 6] Frame Format */
> > - cr0 |= SPI_FRF_MOTO_SPI << DWC_SSI_CTRLR0_FRF_OFFSET;
> > + cr0 |= DW_SPI_CTRLR0_FRF_MOTO_SPI << DW_HSSI_CTRLR0_FRF_OFFSET;
> >
> > /*
> > * SPI mode (SCPOL|SCPH)
> > * CTRLR0[ 8] Serial Clock Phase
> > * CTRLR0[ 9] Serial Clock Polarity
> > */
> > - cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DWC_SSI_CTRLR0_SCPOL_OFFSET;
> > - cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DWC_SSI_CTRLR0_SCPH_OFFSET;
> > + cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DW_HSSI_CTRLR0_SCPOL_OFFSET;
> > + cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DW_HSSI_CTRLR0_SCPH_OFFSET;
> >
> > /* CTRLR0[13] Shift Register Loop */
> > - cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DWC_SSI_CTRLR0_SRL_OFFSET;
> > + cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DW_HSSI_CTRLR0_SRL_OFFSET;
> >
> > if (dws->caps & DW_SPI_CAP_KEEMBAY_MST)
> > - cr0 |= DWC_SSI_CTRLR0_KEEMBAY_MST;
> > + cr0 |= DW_HSSI_CTRLR0_KEEMBAY_MST;
> > }
> >
> > return cr0;
> > @@ -310,7 +310,7 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
> > void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> > struct dw_spi_cfg *cfg)
> > {
> > - struct chip_data *chip = spi_get_ctldata(spi);
> > + struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
> > u32 cr0 = chip->cr0;
> > u32 speed_hz;
> > u16 clk_div;
> > @@ -318,16 +318,17 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> > /* CTRLR0[ 4/3: 0] or CTRLR0[ 20: 16] Data Frame Size */
> > cr0 |= (cfg->dfs - 1) << dws->dfs_offset;
> >
> > - if (!(dws->caps & DW_SPI_CAP_DWC_SSI))
> > + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI))
> > /* CTRLR0[ 9:8] Transfer Mode */
> > - cr0 |= cfg->tmode << SPI_TMOD_OFFSET;
> > + cr0 |= cfg->tmode << DW_PSSI_CTRLR0_TMOD_OFFSET;
> > else
> > /* CTRLR0[11:10] Transfer Mode */
> > - cr0 |= cfg->tmode << DWC_SSI_CTRLR0_TMOD_OFFSET;
> > + cr0 |= cfg->tmode << DW_HSSI_CTRLR0_TMOD_OFFSET;
> >
> > dw_writel(dws, DW_SPI_CTRLR0, cr0);
> >
> > - if (cfg->tmode == SPI_TMOD_EPROMREAD || cfg->tmode == SPI_TMOD_RO)
> > + if (cfg->tmode == DW_SPI_CTRLR0_TMOD_EPROMREAD ||
> > + cfg->tmode == DW_SPI_CTRLR0_TMOD_RO)
> > dw_writel(dws, DW_SPI_CTRLR1, cfg->ndf ? cfg->ndf - 1 : 0);
> >
> > /* Note DW APB SSI clock divider doesn't support odd numbers */
> > @@ -335,7 +336,7 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> > speed_hz = dws->max_freq / clk_div;
> >
> > if (dws->current_freq != speed_hz) {
> > - spi_set_clk(dws, clk_div);
> > + dw_spi_set_clk(dws, clk_div);
> > dws->current_freq = speed_hz;
> > }
> >
> > @@ -363,9 +364,9 @@ static void dw_spi_irq_setup(struct dw_spi *dws)
> >
> > dws->transfer_handler = dw_spi_transfer_handler;
> >
> > - imask = SPI_INT_TXEI | SPI_INT_TXOI | SPI_INT_RXUI | SPI_INT_RXOI |
> > - SPI_INT_RXFI;
> > - spi_umask_intr(dws, imask);
> > + imask = DW_SPI_INT_TXEI | DW_SPI_INT_TXOI |
> > + DW_SPI_INT_RXUI | DW_SPI_INT_RXOI | DW_SPI_INT_RXFI;
> > + dw_spi_umask_intr(dws, imask);
> > }
> >
> > /*
> > @@ -405,11 +406,12 @@ static int dw_spi_poll_transfer(struct dw_spi *dws,
> > }
> >
> > static int dw_spi_transfer_one(struct spi_controller *master,
> > - struct spi_device *spi, struct spi_transfer *transfer)
> > + struct spi_device *spi,
> > + struct spi_transfer *transfer)
> > {
> > struct dw_spi *dws = spi_controller_get_devdata(master);
> > struct dw_spi_cfg cfg = {
> > - .tmode = SPI_TMOD_TR,
> > + .tmode = DW_SPI_CTRLR0_TMOD_TR,
> > .dfs = transfer->bits_per_word,
> > .freq = transfer->speed_hz,
> > };
> > @@ -425,7 +427,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> > /* Ensure the data above is visible for all CPUs */
> > smp_mb();
> >
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> >
> > dw_spi_update_config(dws, spi, &cfg);
> >
> > @@ -436,7 +438,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> > dws->dma_mapped = master->cur_msg_mapped;
> >
> > /* For poll mode just disable all interrupts */
> > - spi_mask_intr(dws, 0xff);
> > + dw_spi_mask_intr(dws, 0xff);
> >
> > if (dws->dma_mapped) {
> > ret = dws->dma_ops->dma_setup(dws, transfer);
> > @@ -444,7 +446,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> > return ret;
> > }
> >
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> >
> > if (dws->dma_mapped)
> > return dws->dma_ops->dma_transfer(dws, transfer);
> > @@ -457,20 +459,20 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> > }
> >
> > static void dw_spi_handle_err(struct spi_controller *master,
> > - struct spi_message *msg)
> > + struct spi_message *msg)
> > {
> > struct dw_spi *dws = spi_controller_get_devdata(master);
> >
> > if (dws->dma_mapped)
> > dws->dma_ops->dma_stop(dws);
> >
> > - spi_reset_chip(dws);
> > + dw_spi_reset_chip(dws);
> > }
> >
> > static int dw_spi_adjust_mem_op_size(struct spi_mem *mem, struct spi_mem_op *op)
> > {
> > if (op->data.dir == SPI_MEM_DATA_IN)
> > - op->data.nbytes = clamp_val(op->data.nbytes, 0, SPI_NDF_MASK + 1);
> > + op->data.nbytes = clamp_val(op->data.nbytes, 0, DW_SPI_NDF_MASK + 1);
> >
> > return 0;
> > }
> > @@ -498,7 +500,7 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
> > if (op->data.dir == SPI_MEM_DATA_OUT)
> > len += op->data.nbytes;
> >
> > - if (len <= SPI_BUF_SIZE) {
> > + if (len <= DW_SPI_BUF_SIZE) {
> > out = dws->buf;
> > } else {
> > out = kzalloc(len, GFP_KERNEL);
> > @@ -512,9 +514,9 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
> > * single buffer in order to speed the data transmission up.
> > */
> > for (i = 0; i < op->cmd.nbytes; ++i)
> > - out[i] = SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
> > + out[i] = DW_SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
> > for (j = 0; j < op->addr.nbytes; ++i, ++j)
> > - out[i] = SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
> > + out[i] = DW_SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
> > for (j = 0; j < op->dummy.nbytes; ++i, ++j)
> > out[i] = 0x0;
> >
> > @@ -587,7 +589,7 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
> > entries = readl_relaxed(dws->regs + DW_SPI_RXFLR);
> > if (!entries) {
> > sts = readl_relaxed(dws->regs + DW_SPI_RISR);
> > - if (sts & SPI_INT_RXOI) {
> > + if (sts & DW_SPI_INT_RXOI) {
> > dev_err(&dws->master->dev, "FIFO overflow on Rx\n");
> > return -EIO;
> > }
> > @@ -603,12 +605,12 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
> >
> > static inline bool dw_spi_ctlr_busy(struct dw_spi *dws)
> > {
> > - return dw_readl(dws, DW_SPI_SR) & SR_BUSY;
> > + return dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_BUSY;
> > }
> >
> > static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
> > {
> > - int retry = SPI_WAIT_RETRIES;
> > + int retry = DW_SPI_WAIT_RETRIES;
> > struct spi_delay delay;
> > unsigned long ns, us;
> > u32 nents;
> > @@ -638,9 +640,9 @@ static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
> >
> > static void dw_spi_stop_mem_op(struct dw_spi *dws, struct spi_device *spi)
> > {
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> > dw_spi_set_cs(spi, true);
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> > }
> >
> > /*
> > @@ -673,19 +675,19 @@ static int dw_spi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
> > cfg.dfs = 8;
> > cfg.freq = clamp(mem->spi->max_speed_hz, 0U, dws->max_mem_freq);
> > if (op->data.dir == SPI_MEM_DATA_IN) {
> > - cfg.tmode = SPI_TMOD_EPROMREAD;
> > + cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
> > cfg.ndf = op->data.nbytes;
> > } else {
> > - cfg.tmode = SPI_TMOD_TO;
> > + cfg.tmode = DW_SPI_CTRLR0_TMOD_TO;
> > }
> >
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> >
> > dw_spi_update_config(dws, mem->spi, &cfg);
> >
> > - spi_mask_intr(dws, 0xff);
> > + dw_spi_mask_intr(dws, 0xff);
> >
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> >
> > /*
> > * DW APB SSI controller has very nasty peculiarities. First originally
> > @@ -768,7 +770,7 @@ static void dw_spi_init_mem_ops(struct dw_spi *dws)
> > static int dw_spi_setup(struct spi_device *spi)
> > {
> > struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
> > - struct chip_data *chip;
> > + struct dw_spi_chip_data *chip;
> >
> > /* Only alloc on first setup */
> > chip = spi_get_ctldata(spi);
> > @@ -776,7 +778,7 @@ static int dw_spi_setup(struct spi_device *spi)
> > struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
> > u32 rx_sample_dly_ns;
> >
> > - chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
> > + chip = kzalloc(sizeof(*chip), GFP_KERNEL);
> > if (!chip)
> > return -ENOMEM;
> > spi_set_ctldata(spi, chip);
> > @@ -803,16 +805,16 @@ static int dw_spi_setup(struct spi_device *spi)
> >
> > static void dw_spi_cleanup(struct spi_device *spi)
> > {
> > - struct chip_data *chip = spi_get_ctldata(spi);
> > + struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
> >
> > kfree(chip);
> > spi_set_ctldata(spi, NULL);
> > }
> >
> > /* Restart the controller, disable all interrupts, clean rx fifo */
> > -static void spi_hw_init(struct device *dev, struct dw_spi *dws)
> > +static void dw_spi_hw_init(struct device *dev, struct dw_spi *dws)
> > {
> > - spi_reset_chip(dws);
> > + dw_spi_reset_chip(dws);
> >
> > /*
> > * Try to detect the FIFO depth if not set by interface driver,
> > @@ -837,18 +839,18 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws)
> > * writability. Note DWC SSI controller also has the extended DFS, but
> > * with zero offset.
> > */
> > - if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
> > + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI)) {
> > u32 cr0, tmp = dw_readl(dws, DW_SPI_CTRLR0);
> >
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> > dw_writel(dws, DW_SPI_CTRLR0, 0xffffffff);
> > cr0 = dw_readl(dws, DW_SPI_CTRLR0);
> > dw_writel(dws, DW_SPI_CTRLR0, tmp);
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> >
> > - if (!(cr0 & SPI_DFS_MASK)) {
> > + if (!(cr0 & DW_PSSI_CTRLR0_DFS_MASK)) {
> > dws->caps |= DW_SPI_CAP_DFS32;
> > - dws->dfs_offset = SPI_DFS32_OFFSET;
> > + dws->dfs_offset = DW_PSSI_CTRLR0_DFS32_OFFSET;
> > dev_dbg(dev, "Detected 32-bits max data frame size\n");
> > }
> > } else {
> > @@ -878,7 +880,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
> > spi_controller_set_devdata(master, dws);
> >
> > /* Basic HW init */
> > - spi_hw_init(dev, dws);
> > + dw_spi_hw_init(dev, dws);
> >
> > ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dev_name(dev),
> > master);
> > @@ -939,7 +941,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
> > err_dma_exit:
> > if (dws->dma_ops && dws->dma_ops->dma_exit)
> > dws->dma_ops->dma_exit(dws);
> > - spi_enable_chip(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> > free_irq(dws->irq, master);
> > err_free_master:
> > spi_controller_put(master);
> > @@ -956,7 +958,7 @@ void dw_spi_remove_host(struct dw_spi *dws)
> > if (dws->dma_ops && dws->dma_ops->dma_exit)
> > dws->dma_ops->dma_exit(dws);
> >
> > - spi_shutdown_chip(dws);
> > + dw_spi_shutdown_chip(dws);
> >
> > free_irq(dws->irq, dws->master);
> > }
> > @@ -970,14 +972,14 @@ int dw_spi_suspend_host(struct dw_spi *dws)
> > if (ret)
> > return ret;
> >
> > - spi_shutdown_chip(dws);
> > + dw_spi_shutdown_chip(dws);
> > return 0;
> > }
> > EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
> >
> > int dw_spi_resume_host(struct dw_spi *dws)
> > {
> > - spi_hw_init(&dws->master->dev, dws);
> > + dw_spi_hw_init(&dws->master->dev, dws);
> > return spi_controller_resume(dws->master);
> > }
> > EXPORT_SYMBOL_GPL(dw_spi_resume_host);
> > diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c
> > index a09831c62192..fd6a2154d2ce 100644
> > --- a/drivers/spi/spi-dw-dma.c
> > +++ b/drivers/spi/spi-dw-dma.c
> > @@ -17,10 +17,10 @@
> >
> > #include "spi-dw.h"
> >
> > -#define RX_BUSY 0
> > -#define RX_BURST_LEVEL 16
> > -#define TX_BUSY 1
> > -#define TX_BURST_LEVEL 16
> > +#define DW_SPI_RX_BUSY 0
> > +#define DW_SPI_RX_BURST_LEVEL 16
> > +#define DW_SPI_TX_BUSY 1
> > +#define DW_SPI_TX_BURST_LEVEL 16
> >
> > static bool dw_spi_dma_chan_filter(struct dma_chan *chan, void *param)
> > {
> > @@ -45,7 +45,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
> > if (!ret && caps.max_burst)
> > max_burst = caps.max_burst;
> > else
> > - max_burst = RX_BURST_LEVEL;
> > + max_burst = DW_SPI_RX_BURST_LEVEL;
> >
> > dws->rxburst = min(max_burst, def_burst);
> > dw_writel(dws, DW_SPI_DMARDLR, dws->rxburst - 1);
> > @@ -54,7 +54,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
> > if (!ret && caps.max_burst)
> > max_burst = caps.max_burst;
> > else
> > - max_burst = TX_BURST_LEVEL;
> > + max_burst = DW_SPI_TX_BURST_LEVEL;
> >
> > /*
> > * Having a Rx DMA channel serviced with higher priority than a Tx DMA
> > @@ -226,13 +226,13 @@ static int dw_spi_dma_wait(struct dw_spi *dws, unsigned int len, u32 speed)
> >
> > static inline bool dw_spi_dma_tx_busy(struct dw_spi *dws)
> > {
> > - return !(dw_readl(dws, DW_SPI_SR) & SR_TF_EMPT);
> > + return !(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_TF_EMPT);
> > }
> >
> > static int dw_spi_dma_wait_tx_done(struct dw_spi *dws,
> > struct spi_transfer *xfer)
> > {
> > - int retry = SPI_WAIT_RETRIES;
> > + int retry = DW_SPI_WAIT_RETRIES;
> > struct spi_delay delay;
> > u32 nents;
> >
> > @@ -259,8 +259,8 @@ static void dw_spi_dma_tx_done(void *arg)
> > {
> > struct dw_spi *dws = arg;
> >
> > - clear_bit(TX_BUSY, &dws->dma_chan_busy);
> > - if (test_bit(RX_BUSY, &dws->dma_chan_busy))
> > + clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
> > + if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy))
> > return;
> >
> > complete(&dws->dma_completion);
> > @@ -304,19 +304,19 @@ static int dw_spi_dma_submit_tx(struct dw_spi *dws, struct scatterlist *sgl,
> > return ret;
> > }
> >
> > - set_bit(TX_BUSY, &dws->dma_chan_busy);
> > + set_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
> >
> > return 0;
> > }
> >
> > static inline bool dw_spi_dma_rx_busy(struct dw_spi *dws)
> > {
> > - return !!(dw_readl(dws, DW_SPI_SR) & SR_RF_NOT_EMPT);
> > + return !!(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_RF_NOT_EMPT);
> > }
> >
> > static int dw_spi_dma_wait_rx_done(struct dw_spi *dws)
> > {
> > - int retry = SPI_WAIT_RETRIES;
> > + int retry = DW_SPI_WAIT_RETRIES;
> > struct spi_delay delay;
> > unsigned long ns, us;
> > u32 nents;
> > @@ -360,8 +360,8 @@ static void dw_spi_dma_rx_done(void *arg)
> > {
> > struct dw_spi *dws = arg;
> >
> > - clear_bit(RX_BUSY, &dws->dma_chan_busy);
> > - if (test_bit(TX_BUSY, &dws->dma_chan_busy))
> > + clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
> > + if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy))
> > return;
> >
> > complete(&dws->dma_completion);
> > @@ -405,7 +405,7 @@ static int dw_spi_dma_submit_rx(struct dw_spi *dws, struct scatterlist *sgl,
> > return ret;
> > }
> >
> > - set_bit(RX_BUSY, &dws->dma_chan_busy);
> > + set_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
> >
> > return 0;
> > }
> > @@ -430,16 +430,16 @@ static int dw_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer)
> > }
> >
> > /* Set the DMA handshaking interface */
> > - dma_ctrl = SPI_DMA_TDMAE;
> > + dma_ctrl = DW_SPI_DMACR_TDMAE;
> > if (xfer->rx_buf)
> > - dma_ctrl |= SPI_DMA_RDMAE;
> > + dma_ctrl |= DW_SPI_DMACR_RDMAE;
> > dw_writel(dws, DW_SPI_DMACR, dma_ctrl);
> >
> > /* Set the interrupt mask */
> > - imr = SPI_INT_TXOI;
> > + imr = DW_SPI_INT_TXOI;
> > if (xfer->rx_buf)
> > - imr |= SPI_INT_RXUI | SPI_INT_RXOI;
> > - spi_umask_intr(dws, imr);
> > + imr |= DW_SPI_INT_RXUI | DW_SPI_INT_RXOI;
> > + dw_spi_umask_intr(dws, imr);
> >
> > reinit_completion(&dws->dma_completion);
> >
> > @@ -615,13 +615,13 @@ static int dw_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer)
> >
> > static void dw_spi_dma_stop(struct dw_spi *dws)
> > {
> > - if (test_bit(TX_BUSY, &dws->dma_chan_busy)) {
> > + if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy)) {
> > dmaengine_terminate_sync(dws->txchan);
> > - clear_bit(TX_BUSY, &dws->dma_chan_busy);
> > + clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
> > }
> > - if (test_bit(RX_BUSY, &dws->dma_chan_busy)) {
> > + if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy)) {
> > dmaengine_terminate_sync(dws->rxchan);
> > - clear_bit(RX_BUSY, &dws->dma_chan_busy);
> > + clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
> > }
> > }
> >
> > diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
> > index 17c06039a74d..435c91aecbca 100644
> > --- a/drivers/spi/spi-dw-mmio.c
> > +++ b/drivers/spi/spi-dw-mmio.c
> > @@ -196,18 +196,18 @@ static int dw_spi_alpine_init(struct platform_device *pdev,
> > return 0;
> > }
> >
> > -static int dw_spi_dw_apb_init(struct platform_device *pdev,
> > - struct dw_spi_mmio *dwsmmio)
> > +static int dw_spi_assi_init(struct platform_device *pdev,
> > + struct dw_spi_mmio *dwsmmio)
> > {
> > dw_spi_dma_setup_generic(&dwsmmio->dws);
> >
> > return 0;
> > }
> >
> > -static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
> > - struct dw_spi_mmio *dwsmmio)
> > +static int dw_spi_hssi_init(struct platform_device *pdev,
> > + struct dw_spi_mmio *dwsmmio)
> > {
> > - dwsmmio->dws.caps = DW_SPI_CAP_DWC_SSI;
> > + dwsmmio->dws.caps = DW_SPI_CAP_DWC_HSSI;
> >
> > dw_spi_dma_setup_generic(&dwsmmio->dws);
> >
> > @@ -217,7 +217,7 @@ static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
> > static int dw_spi_keembay_init(struct platform_device *pdev,
> > struct dw_spi_mmio *dwsmmio)
> > {
> > - dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST | DW_SPI_CAP_DWC_SSI;
> > + dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST | DW_SPI_CAP_DWC_HSSI;
> >
> > return 0;
> > }
> > @@ -342,12 +342,12 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
> > }
> >
> > static const struct of_device_id dw_spi_mmio_of_match[] = {
> > - { .compatible = "snps,dw-apb-ssi", .data = dw_spi_dw_apb_init},
> > + { .compatible = "snps,dw-apb-ssi", .data = dw_spi_assi_init},
> > { .compatible = "mscc,ocelot-spi", .data = dw_spi_mscc_ocelot_init},
> > { .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init},
> > { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init},
> > - { .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init},
> > - { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_dwc_ssi_init},
> > + { .compatible = "renesas,rzn1-spi", .data = dw_spi_assi_init},
> > + { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_hssi_init},
> > { .compatible = "intel,keembay-ssi", .data = dw_spi_keembay_init},
> > { .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
> > { .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
> > @@ -357,7 +357,7 @@ MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
> >
> > #ifdef CONFIG_ACPI
> > static const struct acpi_device_id dw_spi_mmio_acpi_match[] = {
> > - {"HISI0173", (kernel_ulong_t)dw_spi_dw_apb_init},
> > + {"HISI0173", (kernel_ulong_t)dw_spi_assi_init},
> > {},
> > };
> > MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match);
> > diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
> > index 8a91cd58102f..e4a239bc3d36 100644
> > --- a/drivers/spi/spi-dw-pci.c
> > +++ b/drivers/spi/spi-dw-pci.c
> > @@ -24,14 +24,14 @@
> > #define CLK_SPI_CDIV_MASK 0x00000e00
> > #define CLK_SPI_DISABLE_OFFSET 8
> >
> > -struct spi_pci_desc {
> > +struct dw_spi_pci_desc {
> > int (*setup)(struct dw_spi *);
> > u16 num_cs;
> > u16 bus_num;
> > u32 max_freq;
> > };
> >
> > -static int spi_mid_init(struct dw_spi *dws)
> > +static int dw_spi_pci_mid_init(struct dw_spi *dws)
> > {
> > void __iomem *clk_reg;
> > u32 clk_cdiv;
> > @@ -53,36 +53,36 @@ static int spi_mid_init(struct dw_spi *dws)
> > return 0;
> > }
> >
> > -static int spi_generic_init(struct dw_spi *dws)
> > +static int dw_spi_pci_generic_init(struct dw_spi *dws)
> > {
> > dw_spi_dma_setup_generic(dws);
> >
> > return 0;
> > }
> >
> > -static struct spi_pci_desc spi_pci_mid_desc_1 = {
> > - .setup = spi_mid_init,
> > +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_1 = {
> > + .setup = dw_spi_pci_mid_init,
> > .num_cs = 5,
> > .bus_num = 0,
> > };
> >
> > -static struct spi_pci_desc spi_pci_mid_desc_2 = {
> > - .setup = spi_mid_init,
> > +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_2 = {
> > + .setup = dw_spi_pci_mid_init,
> > .num_cs = 2,
> > .bus_num = 1,
> > };
> >
> > -static struct spi_pci_desc spi_pci_ehl_desc = {
> > - .setup = spi_generic_init,
> > +static struct dw_spi_pci_desc dw_spi_pci_ehl_desc = {
> > + .setup = dw_spi_pci_generic_init,
> > .num_cs = 2,
> > .bus_num = -1,
> > .max_freq = 100000000,
> > };
> >
> > -static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > +static int dw_spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > {
> > + struct dw_spi_pci_desc *desc = (struct dw_spi_pci_desc *)ent->driver_data;
> > struct dw_spi *dws;
> > - struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
> > int pci_bar = 0;
> > int ret;
> >
> > @@ -150,7 +150,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > return ret;
> > }
> >
> > -static void spi_pci_remove(struct pci_dev *pdev)
> > +static void dw_spi_pci_remove(struct pci_dev *pdev)
> > {
> > struct dw_spi *dws = pci_get_drvdata(pdev);
> >
> > @@ -162,14 +162,14 @@ static void spi_pci_remove(struct pci_dev *pdev)
> > }
> >
> > #ifdef CONFIG_PM_SLEEP
> > -static int spi_suspend(struct device *dev)
> > +static int dw_spi_pci_suspend(struct device *dev)
> > {
> > struct dw_spi *dws = dev_get_drvdata(dev);
> >
> > return dw_spi_suspend_host(dws);
> > }
> >
> > -static int spi_resume(struct device *dev)
> > +static int dw_spi_pci_resume(struct device *dev)
> > {
> > struct dw_spi *dws = dev_get_drvdata(dev);
> >
> > @@ -177,38 +177,37 @@ static int spi_resume(struct device *dev)
> > }
> > #endif
> >
> > -static SIMPLE_DEV_PM_OPS(dw_spi_pm_ops, spi_suspend, spi_resume);
> > +static SIMPLE_DEV_PM_OPS(dw_spi_pci_pm_ops, dw_spi_pci_suspend, dw_spi_pci_resume);
> >
> > -static const struct pci_device_id pci_ids[] = {
> > +static const struct pci_device_id dw_spi_pci_ids[] = {
> > /* Intel MID platform SPI controller 0 */
> > /*
> > * The access to the device 8086:0801 is disabled by HW, since it's
> > * exclusively used by SCU to communicate with MSIC.
> > */
> > /* Intel MID platform SPI controller 1 */
> > - { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
> > + { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&dw_spi_pci_mid_desc_1},
> > /* Intel MID platform SPI controller 2 */
> > - { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
> > + { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&dw_spi_pci_mid_desc_2},
> > /* Intel Elkhart Lake PSE SPI controllers */
> > - { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},
> > - { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},
> > - { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},
> > - { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},
> > + { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> > + { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> > + { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> > + { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> > {},
> > };
> > -MODULE_DEVICE_TABLE(pci, pci_ids);
> > +MODULE_DEVICE_TABLE(pci, dw_spi_pci_ids);
> >
> > -static struct pci_driver dw_spi_driver = {
> > +static struct pci_driver dw_spi_pci_driver = {
> > .name = DRIVER_NAME,
> > - .id_table = pci_ids,
> > - .probe = spi_pci_probe,
> > - .remove = spi_pci_remove,
> > + .id_table = dw_spi_pci_ids,
> > + .probe = dw_spi_pci_probe,
> > + .remove = dw_spi_pci_remove,
> > .driver = {
> > - .pm = &dw_spi_pm_ops,
> > + .pm = &dw_spi_pci_pm_ops,
> > },
> > };
> > -
> > -module_pci_driver(dw_spi_driver);
> > +module_pci_driver(dw_spi_pci_driver);
> >
> > MODULE_AUTHOR("Feng Tang <feng.tang@...el.com>");
> > MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
> > diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
> > index 467c342bfe56..893b78c43a50 100644
> > --- a/drivers/spi/spi-dw.h
> > +++ b/drivers/spi/spi-dw.h
> > @@ -1,6 +1,6 @@
> > /* SPDX-License-Identifier: GPL-2.0 */
> > -#ifndef DW_SPI_HEADER_H
> > -#define DW_SPI_HEADER_H
> > +#ifndef __SPI_DW_H__
> > +#define __SPI_DW_H__
> >
> > #include <linux/bits.h>
> > #include <linux/completion.h>
> > @@ -11,7 +11,7 @@
> > #include <linux/spi/spi-mem.h>
> > #include <linux/bitfield.h>
> >
> > -/* Register offsets */
> > +/* Register offsets (Generic for both DWC APB SSI and DWC SSI IP-cores) */
> > #define DW_SPI_CTRLR0 0x00
> > #define DW_SPI_CTRLR1 0x04
> > #define DW_SPI_SSIENR 0x08
> > @@ -40,84 +40,85 @@
> > #define DW_SPI_RX_SAMPLE_DLY 0xf0
> > #define DW_SPI_CS_OVERRIDE 0xf4
> >
> > -/* Bit fields in CTRLR0 */
> > -#define SPI_DFS_OFFSET 0
> > -#define SPI_DFS_MASK GENMASK(3, 0)
> > -#define SPI_DFS32_OFFSET 16
> > -
> > -#define SPI_FRF_OFFSET 4
> > -#define SPI_FRF_MOTO_SPI 0x0
> > -#define SPI_FRF_TI_SSP 0x1
> > -#define SPI_FRF_NS_MICROWIRE 0x2
> > -#define SPI_FRF_RESV 0x3
> > -
> > -#define SPI_MODE_OFFSET 6
> > -#define SPI_SCPH_OFFSET 6
> > -#define SPI_SCOL_OFFSET 7
> > -
> > -#define SPI_TMOD_OFFSET 8
> > -#define SPI_TMOD_MASK (0x3 << SPI_TMOD_OFFSET)
> > -#define SPI_TMOD_TR 0x0 /* xmit & recv */
> > -#define SPI_TMOD_TO 0x1 /* xmit only */
> > -#define SPI_TMOD_RO 0x2 /* recv only */
> > -#define SPI_TMOD_EPROMREAD 0x3 /* eeprom read mode */
> > -
> > -#define SPI_SLVOE_OFFSET 10
> > -#define SPI_SRL_OFFSET 11
> > -#define SPI_CFS_OFFSET 12
> > -
> > -/* Bit fields in CTRLR0 based on DWC_ssi_databook.pdf v1.01a */
> > -#define DWC_SSI_CTRLR0_SRL_OFFSET 13
> > -#define DWC_SSI_CTRLR0_TMOD_OFFSET 10
> > -#define DWC_SSI_CTRLR0_TMOD_MASK GENMASK(11, 10)
> > -#define DWC_SSI_CTRLR0_SCPOL_OFFSET 9
> > -#define DWC_SSI_CTRLR0_SCPH_OFFSET 8
> > -#define DWC_SSI_CTRLR0_FRF_OFFSET 6
> > -#define DWC_SSI_CTRLR0_DFS_OFFSET 0
> > +/* Bit fields in CTRLR0 (DWC APB SSI) */
> > +#define DW_PSSI_CTRLR0_DFS_OFFSET 0
> > +#define DW_PSSI_CTRLR0_DFS_MASK GENMASK(3, 0)
> > +#define DW_PSSI_CTRLR0_DFS32_OFFSET 16
> > +
> > +#define DW_PSSI_CTRLR0_FRF_OFFSET 4
> > +#define DW_SPI_CTRLR0_FRF_MOTO_SPI 0x0
> > +#define DW_SPI_CTRLR0_FRF_TI_SSP 0x1
> > +#define DW_SPI_CTRLR0_FRF_NS_MICROWIRE 0x2
> > +#define DW_SPI_CTRLR0_FRF_RESV 0x3
> > +
> > +#define DW_PSSI_CTRLR0_MODE_OFFSET 6
> > +#define DW_PSSI_CTRLR0_SCPH_OFFSET 6
> > +#define DW_PSSI_CTRLR0_SCOL_OFFSET 7
> > +
> > +#define DW_PSSI_CTRLR0_TMOD_OFFSET 8
> > +#define DW_PSSI_CTRLR0_TMOD_MASK (0x3 << DW_PSSI_CTRLR0_TMOD_OFFSET)
> > +#define DW_SPI_CTRLR0_TMOD_TR 0x0 /* xmit & recv */
> > +#define DW_SPI_CTRLR0_TMOD_TO 0x1 /* xmit only */
> > +#define DW_SPI_CTRLR0_TMOD_RO 0x2 /* recv only */
> > +#define DW_SPI_CTRLR0_TMOD_EPROMREAD 0x3 /* eeprom read mode */
> > +
> > +#define DW_PSSI_CTRLR0_SLVOE_OFFSET 10
> > +#define DW_PSSI_CTRLR0_SRL_OFFSET 11
> > +#define DW_PSSI_CTRLR0_CFS_OFFSET 12
> > +
> > +/* Bit fields in CTRLR0 (DWC SSI with AHB interface) */
> > +#define DW_HSSI_CTRLR0_SRL_OFFSET 13
> > +#define DW_HSSI_CTRLR0_TMOD_OFFSET 10
> > +#define DW_HSSI_CTRLR0_TMOD_MASK GENMASK(11, 10)
> > +#define DW_HSSI_CTRLR0_SCPOL_OFFSET 9
> > +#define DW_HSSI_CTRLR0_SCPH_OFFSET 8
> > +#define DW_HSSI_CTRLR0_FRF_OFFSET 6
> > +#define DW_HSSI_CTRLR0_DFS_OFFSET 0
> >
> > /*
> > * For Keem Bay, CTRLR0[31] is used to select controller mode.
> > * 0: SSI is slave
> > * 1: SSI is master
> > */
> > -#define DWC_SSI_CTRLR0_KEEMBAY_MST BIT(31)
> > +#define DW_HSSI_CTRLR0_KEEMBAY_MST BIT(31)
> >
> > /* Bit fields in CTRLR1 */
> > -#define SPI_NDF_MASK GENMASK(15, 0)
> > +#define DW_SPI_NDF_MASK GENMASK(15, 0)
> >
> > /* Bit fields in SR, 7 bits */
> > -#define SR_MASK 0x7f /* cover 7 bits */
> > -#define SR_BUSY (1 << 0)
> > -#define SR_TF_NOT_FULL (1 << 1)
> > -#define SR_TF_EMPT (1 << 2)
> > -#define SR_RF_NOT_EMPT (1 << 3)
> > -#define SR_RF_FULL (1 << 4)
> > -#define SR_TX_ERR (1 << 5)
> > -#define SR_DCOL (1 << 6)
> > +#define DW_SPI_SR_MASK 0x7f /* cover 7 bits */
> > +#define DW_SPI_SR_BUSY (1 << 0)
> > +#define DW_SPI_SR_TF_NOT_FULL (1 << 1)
> > +#define DW_SPI_SR_TF_EMPT (1 << 2)
> > +#define DW_SPI_SR_RF_NOT_EMPT (1 << 3)
> > +#define DW_SPI_SR_RF_FULL (1 << 4)
> > +#define DW_SPI_SR_TX_ERR (1 << 5)
> > +#define DW_SPI_SR_DCOL (1 << 6)
> >
> > /* Bit fields in ISR, IMR, RISR, 7 bits */
> > -#define SPI_INT_TXEI (1 << 0)
> > -#define SPI_INT_TXOI (1 << 1)
> > -#define SPI_INT_RXUI (1 << 2)
> > -#define SPI_INT_RXOI (1 << 3)
> > -#define SPI_INT_RXFI (1 << 4)
> > -#define SPI_INT_MSTI (1 << 5)
> > +#define DW_SPI_INT_TXEI (1 << 0)
> > +#define DW_SPI_INT_TXOI (1 << 1)
> > +#define DW_SPI_INT_RXUI (1 << 2)
> > +#define DW_SPI_INT_RXOI (1 << 3)
> > +#define DW_SPI_INT_RXFI (1 << 4)
> > +#define DW_SPI_INT_MSTI (1 << 5)
> >
> > /* Bit fields in DMACR */
> > -#define SPI_DMA_RDMAE (1 << 0)
> > -#define SPI_DMA_TDMAE (1 << 1)
> > +#define DW_SPI_DMACR_RDMAE (1 << 0)
> > +#define DW_SPI_DMACR_TDMAE (1 << 1)
> >
> > -#define SPI_WAIT_RETRIES 5
> > -#define SPI_BUF_SIZE \
> > +/* Mem/DMA operations helpers */
> > +#define DW_SPI_WAIT_RETRIES 5
> > +#define DW_SPI_BUF_SIZE \
> > (sizeof_field(struct spi_mem_op, cmd.opcode) + \
> > sizeof_field(struct spi_mem_op, addr.val) + 256)
> > -#define SPI_GET_BYTE(_val, _idx) \
> > +#define DW_SPI_GET_BYTE(_val, _idx) \
> > ((_val) >> (BITS_PER_BYTE * (_idx)) & 0xff)
> >
> > /* DW SPI capabilities */
> > #define DW_SPI_CAP_CS_OVERRIDE BIT(0)
> > #define DW_SPI_CAP_KEEMBAY_MST BIT(1)
> > -#define DW_SPI_CAP_DWC_SSI BIT(2)
> > +#define DW_SPI_CAP_DWC_HSSI BIT(2)
> > #define DW_SPI_CAP_DFS32 BIT(3)
> >
> > /* Slave spi_transfer/spi_mem_op related */
> > @@ -162,7 +163,7 @@ struct dw_spi {
> > unsigned int tx_len;
> > void *rx;
> > unsigned int rx_len;
> > - u8 buf[SPI_BUF_SIZE];
> > + u8 buf[DW_SPI_BUF_SIZE];
> > int dma_mapped;
> > u8 n_bytes; /* current is a 1/2 bytes op */
> > irqreturn_t (*transfer_handler)(struct dw_spi *dws);
> > @@ -224,18 +225,18 @@ static inline void dw_write_io_reg(struct dw_spi *dws, u32 offset, u32 val)
> > }
> > }
> >
> > -static inline void spi_enable_chip(struct dw_spi *dws, int enable)
> > +static inline void dw_spi_enable_chip(struct dw_spi *dws, int enable)
> > {
> > dw_writel(dws, DW_SPI_SSIENR, (enable ? 1 : 0));
> > }
> >
> > -static inline void spi_set_clk(struct dw_spi *dws, u16 div)
> > +static inline void dw_spi_set_clk(struct dw_spi *dws, u16 div)
> > {
> > dw_writel(dws, DW_SPI_BAUDR, div);
> > }
> >
> > /* Disable IRQ bits */
> > -static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
> > +static inline void dw_spi_mask_intr(struct dw_spi *dws, u32 mask)
> > {
> > u32 new_mask;
> >
> > @@ -244,7 +245,7 @@ static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
> > }
> >
> > /* Enable IRQ bits */
> > -static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
> > +static inline void dw_spi_umask_intr(struct dw_spi *dws, u32 mask)
> > {
> > u32 new_mask;
> >
> > @@ -257,19 +258,19 @@ static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
> > * and CS, then re-enables the controller back. Transmit and receive FIFO
> > * buffers are cleared when the device is disabled.
> > */
> > -static inline void spi_reset_chip(struct dw_spi *dws)
> > +static inline void dw_spi_reset_chip(struct dw_spi *dws)
> > {
> > - spi_enable_chip(dws, 0);
> > - spi_mask_intr(dws, 0xff);
> > + dw_spi_enable_chip(dws, 0);
> > + dw_spi_mask_intr(dws, 0xff);
> > dw_readl(dws, DW_SPI_ICR);
> > dw_writel(dws, DW_SPI_SER, 0);
> > - spi_enable_chip(dws, 1);
> > + dw_spi_enable_chip(dws, 1);
> > }
> >
> > -static inline void spi_shutdown_chip(struct dw_spi *dws)
> > +static inline void dw_spi_shutdown_chip(struct dw_spi *dws)
> > {
> > - spi_enable_chip(dws, 0);
> > - spi_set_clk(dws, 0);
> > + dw_spi_enable_chip(dws, 0);
> > + dw_spi_set_clk(dws, 0);
> > }
> >
> > extern void dw_spi_set_cs(struct spi_device *spi, bool enable);
> > @@ -293,4 +294,4 @@ static inline void dw_spi_dma_setup_generic(struct dw_spi *dws) {}
> >
> > #endif /* !CONFIG_SPI_DW_DMA */
> >
> > -#endif /* DW_SPI_HEADER_H */
> > +#endif /* __SPI_DW_H__ */
> > --
> > 2.33.0
> >
>
>
> --
> With Best Regards,
> Andy Shevchenko
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