[PATCH v1 1/3] spi: spi-rockchip: cleanup use struct spi_controller

From: Chris Ruehl
Date: Mon May 11 2020 - 04:30:48 EST


Cleanup, move from the compatibily layer struct spi_master over
to struct spi_controller, and rename the related function calls.

Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx>
---
drivers/spi/spi-rockchip.c | 182 ++++++++++++++++++-------------------
1 file changed, 91 insertions(+), 91 deletions(-)

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 70ef63e0b6b8..c501d8a84414 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -219,8 +219,8 @@ static u32 get_fifo_len(struct rockchip_spi *rs)

static void rockchip_spi_set_cs(struct spi_device *spi, bool enable)
{
- struct spi_master *master = spi->master;
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = spi->controller;
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
bool cs_asserted = !enable;

/* Return immediately for no-op */
@@ -244,10 +244,10 @@ static void rockchip_spi_set_cs(struct spi_device *spi, bool enable)
rs->cs_asserted[spi->chip_select] = cs_asserted;
}

-static void rockchip_spi_handle_err(struct spi_master *master,
+static void rockchip_spi_handle_err(struct spi_controller *ctlr,
struct spi_message *msg)
{
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

/* stop running spi transfer
* this also flushes both rx and tx fifos
@@ -258,10 +258,10 @@ static void rockchip_spi_handle_err(struct spi_master *master,
writel_relaxed(0, rs->regs + ROCKCHIP_SPI_IMR);

if (atomic_read(&rs->state) & TXDMA)
- dmaengine_terminate_async(master->dma_tx);
+ dmaengine_terminate_async(ctlr->dma_tx);

if (atomic_read(&rs->state) & RXDMA)
- dmaengine_terminate_async(master->dma_rx);
+ dmaengine_terminate_async(ctlr->dma_rx);
}

static void rockchip_spi_pio_writer(struct rockchip_spi *rs)
@@ -319,8 +319,8 @@ static void rockchip_spi_pio_reader(struct rockchip_spi *rs)

static irqreturn_t rockchip_spi_isr(int irq, void *dev_id)
{
- struct spi_master *master = dev_id;
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = dev_id;
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

if (rs->tx_left)
rockchip_spi_pio_writer(rs);
@@ -329,7 +329,7 @@ static irqreturn_t rockchip_spi_isr(int irq, void *dev_id)
if (!rs->rx_left) {
spi_enable_chip(rs, false);
writel_relaxed(0, rs->regs + ROCKCHIP_SPI_IMR);
- spi_finalize_current_transfer(master);
+ spi_finalize_current_transfer(ctlr);
}

return IRQ_HANDLED;
@@ -355,21 +355,21 @@ static int rockchip_spi_prepare_irq(struct rockchip_spi *rs,

static void rockchip_spi_dma_rxcb(void *data)
{
- struct spi_master *master = data;
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = data;
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
int state = atomic_fetch_andnot(RXDMA, &rs->state);

if (state & TXDMA)
return;

spi_enable_chip(rs, false);
- spi_finalize_current_transfer(master);
+ spi_finalize_current_transfer(ctlr);
}

static void rockchip_spi_dma_txcb(void *data)
{
- struct spi_master *master = data;
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = data;
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
int state = atomic_fetch_andnot(TXDMA, &rs->state);

if (state & RXDMA)
@@ -379,11 +379,11 @@ static void rockchip_spi_dma_txcb(void *data)
wait_for_idle(rs);

spi_enable_chip(rs, false);
- spi_finalize_current_transfer(master);
+ spi_finalize_current_transfer(ctlr);
}

static int rockchip_spi_prepare_dma(struct rockchip_spi *rs,
- struct spi_master *master, struct spi_transfer *xfer)
+ struct spi_controller *ctlr, struct spi_transfer *xfer)
{
struct dma_async_tx_descriptor *rxdesc, *txdesc;

@@ -398,17 +398,17 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs,
.src_maxburst = 1,
};

- dmaengine_slave_config(master->dma_rx, &rxconf);
+ dmaengine_slave_config(ctlr->dma_rx, &rxconf);

rxdesc = dmaengine_prep_slave_sg(
- master->dma_rx,
+ ctlr->dma_rx,
xfer->rx_sg.sgl, xfer->rx_sg.nents,
DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
if (!rxdesc)
return -EINVAL;

rxdesc->callback = rockchip_spi_dma_rxcb;
- rxdesc->callback_param = master;
+ rxdesc->callback_param = ctlr;
}

txdesc = NULL;
@@ -420,27 +420,27 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs,
.dst_maxburst = rs->fifo_len / 4,
};

- dmaengine_slave_config(master->dma_tx, &txconf);
+ dmaengine_slave_config(ctlr->dma_tx, &txconf);

txdesc = dmaengine_prep_slave_sg(
- master->dma_tx,
+ ctlr->dma_tx,
xfer->tx_sg.sgl, xfer->tx_sg.nents,
DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
if (!txdesc) {
if (rxdesc)
- dmaengine_terminate_sync(master->dma_rx);
+ dmaengine_terminate_sync(ctlr->dma_rx);
return -EINVAL;
}

txdesc->callback = rockchip_spi_dma_txcb;
- txdesc->callback_param = master;
+ txdesc->callback_param = ctlr;
}

/* rx must be started before tx due to spi instinct */
if (rxdesc) {
atomic_or(RXDMA, &rs->state);
dmaengine_submit(rxdesc);
- dma_async_issue_pending(master->dma_rx);
+ dma_async_issue_pending(ctlr->dma_rx);
}

spi_enable_chip(rs, true);
@@ -448,7 +448,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs,
if (txdesc) {
atomic_or(TXDMA, &rs->state);
dmaengine_submit(txdesc);
- dma_async_issue_pending(master->dma_tx);
+ dma_async_issue_pending(ctlr->dma_tx);
}

/* 1 means the transfer is in progress */
@@ -493,7 +493,7 @@ static void rockchip_spi_config(struct rockchip_spi *rs,
break;
default:
/* we only whitelist 4, 8 and 16 bit words in
- * master->bits_per_word_mask, so this shouldn't
+ * ctlr->bits_per_word_mask, so this shouldn't
* happen
*/
unreachable();
@@ -536,11 +536,11 @@ static size_t rockchip_spi_max_transfer_size(struct spi_device *spi)
}

static int rockchip_spi_transfer_one(
- struct spi_master *master,
+ struct spi_controller *ctlr,
struct spi_device *spi,
struct spi_transfer *xfer)
{
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
bool use_dma;

WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) &&
@@ -558,21 +558,21 @@ static int rockchip_spi_transfer_one(

rs->n_bytes = xfer->bits_per_word <= 8 ? 1 : 2;

- use_dma = master->can_dma ? master->can_dma(master, spi, xfer) : false;
+ use_dma = ctlr->can_dma ? ctlr->can_dma(ctlr, spi, xfer) : false;

rockchip_spi_config(rs, spi, xfer, use_dma);

if (use_dma)
- return rockchip_spi_prepare_dma(rs, master, xfer);
+ return rockchip_spi_prepare_dma(rs, ctlr, xfer);

return rockchip_spi_prepare_irq(rs, xfer);
}

-static bool rockchip_spi_can_dma(struct spi_master *master,
+static bool rockchip_spi_can_dma(struct spi_controller *ctlr,
struct spi_device *spi,
struct spi_transfer *xfer)
{
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
unsigned int bytes_per_word = xfer->bits_per_word <= 8 ? 1 : 2;

/* if the numbor of spi words to transfer is less than the fifo
@@ -586,44 +586,44 @@ static int rockchip_spi_probe(struct platform_device *pdev)
{
int ret;
struct rockchip_spi *rs;
- struct spi_master *master;
+ struct spi_controller *ctlr;
struct resource *mem;
u32 rsd_nsecs;

- master = spi_alloc_master(&pdev->dev, sizeof(struct rockchip_spi));
- if (!master)
+ ctlr = spi_alloc_master(&pdev->dev, sizeof(struct rockchip_spi));
+ if (!ctlr)
return -ENOMEM;

- platform_set_drvdata(pdev, master);
+ platform_set_drvdata(pdev, ctlr);

- rs = spi_master_get_devdata(master);
+ rs = spi_controller_get_devdata(ctlr);

/* Get basic io resource and map it */
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rs->regs = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(rs->regs)) {
ret = PTR_ERR(rs->regs);
- goto err_put_master;
+ goto err_put_ctlr;
}

rs->apb_pclk = devm_clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(rs->apb_pclk)) {
dev_err(&pdev->dev, "Failed to get apb_pclk\n");
ret = PTR_ERR(rs->apb_pclk);
- goto err_put_master;
+ goto err_put_ctlr;
}

rs->spiclk = devm_clk_get(&pdev->dev, "spiclk");
if (IS_ERR(rs->spiclk)) {
dev_err(&pdev->dev, "Failed to get spi_pclk\n");
ret = PTR_ERR(rs->spiclk);
- goto err_put_master;
+ goto err_put_ctlr;
}

ret = clk_prepare_enable(rs->apb_pclk);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to enable apb_pclk\n");
- goto err_put_master;
+ goto err_put_ctlr;
}

ret = clk_prepare_enable(rs->spiclk);
@@ -639,7 +639,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
goto err_disable_spiclk;

ret = devm_request_threaded_irq(&pdev->dev, ret, rockchip_spi_isr, NULL,
- IRQF_ONESHOT, dev_name(&pdev->dev), master);
+ IRQF_ONESHOT, dev_name(&pdev->dev), ctlr);
if (ret)
goto err_disable_spiclk;

@@ -673,78 +673,78 @@ static int rockchip_spi_probe(struct platform_device *pdev)
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);

- master->auto_runtime_pm = true;
- master->bus_num = pdev->id;
- master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_LSB_FIRST;
- master->num_chipselect = ROCKCHIP_SPI_MAX_CS_NUM;
- master->dev.of_node = pdev->dev.of_node;
- master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8) | SPI_BPW_MASK(4);
- master->min_speed_hz = rs->freq / BAUDR_SCKDV_MAX;
- master->max_speed_hz = min(rs->freq / BAUDR_SCKDV_MIN, MAX_SCLK_OUT);
-
- master->set_cs = rockchip_spi_set_cs;
- master->transfer_one = rockchip_spi_transfer_one;
- master->max_transfer_size = rockchip_spi_max_transfer_size;
- master->handle_err = rockchip_spi_handle_err;
- master->flags = SPI_MASTER_GPIO_SS;
-
- master->dma_tx = dma_request_chan(rs->dev, "tx");
- if (IS_ERR(master->dma_tx)) {
+ ctlr->auto_runtime_pm = true;
+ ctlr->bus_num = pdev->id;
+ ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_LSB_FIRST;
+ ctlr->num_chipselect = ROCKCHIP_SPI_MAX_CS_NUM;
+ ctlr->dev.of_node = pdev->dev.of_node;
+ ctlr->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8) | SPI_BPW_MASK(4);
+ ctlr->min_speed_hz = rs->freq / BAUDR_SCKDV_MAX;
+ ctlr->max_speed_hz = min(rs->freq / BAUDR_SCKDV_MIN, MAX_SCLK_OUT);
+
+ ctlr->set_cs = rockchip_spi_set_cs;
+ ctlr->transfer_one = rockchip_spi_transfer_one;
+ ctlr->max_transfer_size = rockchip_spi_max_transfer_size;
+ ctlr->handle_err = rockchip_spi_handle_err;
+ ctlr->flags = SPI_MASTER_GPIO_SS;
+
+ ctlr->dma_tx = dma_request_chan(rs->dev, "tx");
+ if (IS_ERR(ctlr->dma_tx)) {
/* Check tx to see if we need defer probing driver */
- if (PTR_ERR(master->dma_tx) == -EPROBE_DEFER) {
+ if (PTR_ERR(ctlr->dma_tx) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto err_disable_pm_runtime;
}
dev_warn(rs->dev, "Failed to request TX DMA channel\n");
- master->dma_tx = NULL;
+ ctlr->dma_tx = NULL;
}

- master->dma_rx = dma_request_chan(rs->dev, "rx");
- if (IS_ERR(master->dma_rx)) {
- if (PTR_ERR(master->dma_rx) == -EPROBE_DEFER) {
+ ctlr->dma_rx = dma_request_chan(rs->dev, "rx");
+ if (IS_ERR(ctlr->dma_rx)) {
+ if (PTR_ERR(ctlr->dma_rx) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto err_free_dma_tx;
}
dev_warn(rs->dev, "Failed to request RX DMA channel\n");
- master->dma_rx = NULL;
+ ctlr->dma_rx = NULL;
}

- if (master->dma_tx && master->dma_rx) {
+ if (ctlr->dma_tx && ctlr->dma_rx) {
rs->dma_addr_tx = mem->start + ROCKCHIP_SPI_TXDR;
rs->dma_addr_rx = mem->start + ROCKCHIP_SPI_RXDR;
- master->can_dma = rockchip_spi_can_dma;
+ ctlr->can_dma = rockchip_spi_can_dma;
}

- ret = devm_spi_register_master(&pdev->dev, master);
+ ret = devm_spi_register_controller(&pdev->dev, ctlr);
if (ret < 0) {
- dev_err(&pdev->dev, "Failed to register master\n");
+ dev_err(&pdev->dev, "Failed to register controller\n");
goto err_free_dma_rx;
}

return 0;

err_free_dma_rx:
- if (master->dma_rx)
- dma_release_channel(master->dma_rx);
+ if (ctlr->dma_rx)
+ dma_release_channel(ctlr->dma_rx);
err_free_dma_tx:
- if (master->dma_tx)
- dma_release_channel(master->dma_tx);
+ if (ctlr->dma_tx)
+ dma_release_channel(ctlr->dma_tx);
err_disable_pm_runtime:
pm_runtime_disable(&pdev->dev);
err_disable_spiclk:
clk_disable_unprepare(rs->spiclk);
err_disable_apbclk:
clk_disable_unprepare(rs->apb_pclk);
-err_put_master:
- spi_master_put(master);
+err_put_ctlr:
+ spi_controller_put(ctlr);

return ret;
}

static int rockchip_spi_remove(struct platform_device *pdev)
{
- struct spi_master *master = spi_master_get(platform_get_drvdata(pdev));
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = spi_controller_get(platform_get_drvdata(pdev));
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

pm_runtime_get_sync(&pdev->dev);

@@ -755,12 +755,12 @@ static int rockchip_spi_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);

- if (master->dma_tx)
- dma_release_channel(master->dma_tx);
- if (master->dma_rx)
- dma_release_channel(master->dma_rx);
+ if (ctlr->dma_tx)
+ dma_release_channel(ctlr->dma_tx);
+ if (ctlr->dma_rx)
+ dma_release_channel(ctlr->dma_rx);

- spi_master_put(master);
+ spi_controller_put(ctlr);

return 0;
}
@@ -769,9 +769,9 @@ static int rockchip_spi_remove(struct platform_device *pdev)
static int rockchip_spi_suspend(struct device *dev)
{
int ret;
- struct spi_master *master = dev_get_drvdata(dev);
+ struct spi_controller *ctlr = dev_get_drvdata(dev);

- ret = spi_master_suspend(master);
+ ret = spi_controller_suspend(ctlr);
if (ret < 0)
return ret;

@@ -787,8 +787,8 @@ static int rockchip_spi_suspend(struct device *dev)
static int rockchip_spi_resume(struct device *dev)
{
int ret;
- struct spi_master *master = dev_get_drvdata(dev);
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = dev_get_drvdata(dev);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

pinctrl_pm_select_default_state(dev);

@@ -796,7 +796,7 @@ static int rockchip_spi_resume(struct device *dev)
if (ret < 0)
return ret;

- ret = spi_master_resume(master);
+ ret = spi_controller_resume(ctlr);
if (ret < 0) {
clk_disable_unprepare(rs->spiclk);
clk_disable_unprepare(rs->apb_pclk);
@@ -809,8 +809,8 @@ static int rockchip_spi_resume(struct device *dev)
#ifdef CONFIG_PM
static int rockchip_spi_runtime_suspend(struct device *dev)
{
- struct spi_master *master = dev_get_drvdata(dev);
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = dev_get_drvdata(dev);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

clk_disable_unprepare(rs->spiclk);
clk_disable_unprepare(rs->apb_pclk);
@@ -821,8 +821,8 @@ static int rockchip_spi_runtime_suspend(struct device *dev)
static int rockchip_spi_runtime_resume(struct device *dev)
{
int ret;
- struct spi_master *master = dev_get_drvdata(dev);
- struct rockchip_spi *rs = spi_master_get_devdata(master);
+ struct spi_controller *ctlr = dev_get_drvdata(dev);
+ struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);

ret = clk_prepare_enable(rs->apb_pclk);
if (ret < 0)
--
2.20.1