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spi: spi-cadence: Switch to spi_controller structure

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Replace spi_master structure with spi_controller structure.
spi_controller structure provides interface support for
both SPI master and slave controller.

Signed-off-by: Srinivas Goud <srinivas.goud@amd.com>
Link: https://lore.kernel.org/r/1681825625-10265-2-git-send-email-srinivas.goud@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Goud 2023-04-18 19:17:04 +05:30 committed by Mark Brown
parent ed5a25ac75
commit f6997e9bd8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 58 additions and 58 deletions
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116
drivers/spi/spi-cadence.c
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@ -173,7 +173,7 @@ static void cdns_spi_init_hw(struct cdns_spi *xspi)
*/
static void cdns_spi_chipselect(struct spi_device *spi, bool is_high)
{
struct cdns_spi *xspi = spi_master_get_devdata(spi->master);
struct cdns_spi *xspi = spi_controller_get_devdata(spi->controller);
u32 ctrl_reg;
ctrl_reg = cdns_spi_read(xspi, CDNS_SPI_CR);
@ -204,7 +204,7 @@ static void cdns_spi_chipselect(struct spi_device *spi, bool is_high)
*/
static void cdns_spi_config_clock_mode(struct spi_device *spi)
{
struct cdns_spi *xspi = spi_master_get_devdata(spi->master);
struct cdns_spi *xspi = spi_controller_get_devdata(spi->controller);
u32 ctrl_reg, new_ctrl_reg;
new_ctrl_reg = cdns_spi_read(xspi, CDNS_SPI_CR);
@ -247,7 +247,7 @@ static void cdns_spi_config_clock_mode(struct spi_device *spi)
static void cdns_spi_config_clock_freq(struct spi_device *spi,
struct spi_transfer *transfer)
{
struct cdns_spi *xspi = spi_master_get_devdata(spi->master);
struct cdns_spi *xspi = spi_controller_get_devdata(spi->controller);
u32 ctrl_reg, baud_rate_val;
unsigned long frequency;
@ -285,7 +285,7 @@ static void cdns_spi_config_clock_freq(struct spi_device *spi,
static int cdns_spi_setup_transfer(struct spi_device *spi,
struct spi_transfer *transfer)
{
struct cdns_spi *xspi = spi_master_get_devdata(spi->master);
struct cdns_spi *xspi = spi_controller_get_devdata(spi->controller);
cdns_spi_config_clock_freq(spi, transfer);
@ -340,8 +340,8 @@ static void cdns_spi_fill_tx_fifo(struct cdns_spi *xspi)
*/
static irqreturn_t cdns_spi_irq(int irq, void *dev_id)
{
struct spi_master *master = dev_id;
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct spi_controller *ctlr = dev_id;
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
irqreturn_t status;
u32 intr_status;
@ -355,7 +355,7 @@ static irqreturn_t cdns_spi_irq(int irq, void *dev_id)
* transferred is non-zero
*/
cdns_spi_write(xspi, CDNS_SPI_IDR, CDNS_SPI_IXR_DEFAULT);
spi_finalize_current_transfer(master);
spi_finalize_current_transfer(ctlr);
status = IRQ_HANDLED;
} else if (intr_status & CDNS_SPI_IXR_TXOW) {
unsigned long trans_cnt;
@ -381,7 +381,7 @@ static irqreturn_t cdns_spi_irq(int irq, void *dev_id)
/* Transfer is completed */
cdns_spi_write(xspi, CDNS_SPI_IDR,
CDNS_SPI_IXR_DEFAULT);
spi_finalize_current_transfer(master);
spi_finalize_current_transfer(ctlr);
}
status = IRQ_HANDLED;
}
@ -389,7 +389,7 @@ static irqreturn_t cdns_spi_irq(int irq, void *dev_id)
return status;
}
static int cdns_prepare_message(struct spi_master *master,
static int cdns_prepare_message(struct spi_controller *ctlr,
struct spi_message *msg)
{
cdns_spi_config_clock_mode(msg->spi);
@ -398,7 +398,7 @@ static int cdns_prepare_message(struct spi_master *master,
/**
* cdns_transfer_one - Initiates the SPI transfer
* @master: Pointer to spi_master structure
* @ctlr: Pointer to spi_controller structure
* @spi: Pointer to the spi_device structure
* @transfer: Pointer to the spi_transfer structure which provides
* information about next transfer parameters
@ -408,11 +408,11 @@ static int cdns_prepare_message(struct spi_master *master,
*
* Return: Number of bytes transferred in the last transfer
*/
static int cdns_transfer_one(struct spi_master *master,
static int cdns_transfer_one(struct spi_controller *ctlr,
struct spi_device *spi,
struct spi_transfer *transfer)
{
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
xspi->txbuf = transfer->tx_buf;
xspi->rxbuf = transfer->rx_buf;
@ -429,16 +429,16 @@ static int cdns_transfer_one(struct spi_master *master,
/**
* cdns_prepare_transfer_hardware - Prepares hardware for transfer.
* @master: Pointer to the spi_master structure which provides
* @ctlr: Pointer to the spi_controller structure which provides
* information about the controller.
*
* This function enables SPI master controller.
*
* Return: 0 always
*/
static int cdns_prepare_transfer_hardware(struct spi_master *master)
static int cdns_prepare_transfer_hardware(struct spi_controller *ctlr)
{
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
cdns_spi_write(xspi, CDNS_SPI_ER, CDNS_SPI_ER_ENABLE);
@ -447,16 +447,16 @@ static int cdns_prepare_transfer_hardware(struct spi_master *master)
/**
* cdns_unprepare_transfer_hardware - Relaxes hardware after transfer
* @master: Pointer to the spi_master structure which provides
* @ctlr: Pointer to the spi_controller structure which provides
* information about the controller.
*
* This function disables the SPI master controller when no slave selected.
*
* Return: 0 always
*/
static int cdns_unprepare_transfer_hardware(struct spi_master *master)
static int cdns_unprepare_transfer_hardware(struct spi_controller *ctlr)
{
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
u32 ctrl_reg;
/* Disable the SPI if slave is deselected */
@ -497,42 +497,42 @@ static void cdns_spi_detect_fifo_depth(struct cdns_spi *xspi)
static int cdns_spi_probe(struct platform_device *pdev)
{
int ret = 0, irq;
struct spi_master *master;
struct spi_controller *ctlr;
struct cdns_spi *xspi;
u32 num_cs;
master = spi_alloc_master(&pdev->dev, sizeof(*xspi));
if (!master)
ctlr = spi_alloc_master(&pdev->dev, sizeof(*xspi));
if (!ctlr)
return -ENOMEM;
xspi = spi_master_get_devdata(master);
master->dev.of_node = pdev->dev.of_node;
platform_set_drvdata(pdev, master);
xspi = spi_controller_get_devdata(ctlr);
ctlr->dev.of_node = pdev->dev.of_node;
platform_set_drvdata(pdev, ctlr);
xspi->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(xspi->regs)) {
ret = PTR_ERR(xspi->regs);
goto remove_master;
goto remove_ctlr;
}
xspi->pclk = devm_clk_get(&pdev->dev, "pclk");
if (IS_ERR(xspi->pclk)) {
dev_err(&pdev->dev, "pclk clock not found.\n");
ret = PTR_ERR(xspi->pclk);
goto remove_master;
goto remove_ctlr;
}
xspi->ref_clk = devm_clk_get(&pdev->dev, "ref_clk");
if (IS_ERR(xspi->ref_clk)) {
dev_err(&pdev->dev, "ref_clk clock not found.\n");
ret = PTR_ERR(xspi->ref_clk);
goto remove_master;
goto remove_ctlr;
}
ret = clk_prepare_enable(xspi->pclk);
if (ret) {
dev_err(&pdev->dev, "Unable to enable APB clock.\n");
goto remove_master;
goto remove_ctlr;
}
ret = clk_prepare_enable(xspi->ref_clk);
@ -549,9 +549,9 @@ static int cdns_spi_probe(struct platform_device *pdev)
ret = of_property_read_u32(pdev->dev.of_node, "num-cs", &num_cs);
if (ret < 0)
master->num_chipselect = CDNS_SPI_DEFAULT_NUM_CS;
ctlr->num_chipselect = CDNS_SPI_DEFAULT_NUM_CS;
else
master->num_chipselect = num_cs;
ctlr->num_chipselect = num_cs;
ret = of_property_read_u32(pdev->dev.of_node, "is-decoded-cs",
&xspi->is_decoded_cs);
@ -570,35 +570,35 @@ static int cdns_spi_probe(struct platform_device *pdev)
}
ret = devm_request_irq(&pdev->dev, irq, cdns_spi_irq,
0, pdev->name, master);
0, pdev->name, ctlr);
if (ret != 0) {
ret = -ENXIO;
dev_err(&pdev->dev, "request_irq failed\n");
goto clk_dis_all;
}
master->use_gpio_descriptors = true;
master->prepare_transfer_hardware = cdns_prepare_transfer_hardware;
master->prepare_message = cdns_prepare_message;
master->transfer_one = cdns_transfer_one;
master->unprepare_transfer_hardware = cdns_unprepare_transfer_hardware;
master->set_cs = cdns_spi_chipselect;
master->auto_runtime_pm = true;
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
ctlr->use_gpio_descriptors = true;
ctlr->prepare_transfer_hardware = cdns_prepare_transfer_hardware;
ctlr->prepare_message = cdns_prepare_message;
ctlr->transfer_one = cdns_transfer_one;
ctlr->unprepare_transfer_hardware = cdns_unprepare_transfer_hardware;
ctlr->set_cs = cdns_spi_chipselect;
ctlr->auto_runtime_pm = true;
ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
xspi->clk_rate = clk_get_rate(xspi->ref_clk);
/* Set to default valid value */
master->max_speed_hz = xspi->clk_rate / 4;
xspi->speed_hz = master->max_speed_hz;
ctlr->max_speed_hz = xspi->clk_rate / 4;
xspi->speed_hz = ctlr->max_speed_hz;
master->bits_per_word_mask = SPI_BPW_MASK(8);
ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
pm_runtime_mark_last_busy(&pdev->dev);
pm_runtime_put_autosuspend(&pdev->dev);
ret = spi_register_master(master);
ret = spi_register_controller(ctlr);
if (ret) {
dev_err(&pdev->dev, "spi_register_master failed\n");
dev_err(&pdev->dev, "spi_register_controller failed\n");
goto clk_dis_all;
}
@ -610,8 +610,8 @@ clk_dis_all:
clk_disable_unprepare(xspi->ref_clk);
clk_dis_apb:
clk_disable_unprepare(xspi->pclk);
remove_master:
spi_master_put(master);
remove_ctlr:
spi_controller_put(ctlr);
return ret;
}
@ -627,8 +627,8 @@ remove_master:
*/
static void cdns_spi_remove(struct platform_device *pdev)
{
struct spi_master *master = platform_get_drvdata(pdev);
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct spi_controller *ctlr = platform_get_drvdata(pdev);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
cdns_spi_write(xspi, CDNS_SPI_ER, CDNS_SPI_ER_DISABLE);
@ -637,7 +637,7 @@ static void cdns_spi_remove(struct platform_device *pdev)
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_disable(&pdev->dev);
spi_unregister_master(master);
spi_unregister_controller(ctlr);
}
/**
@ -651,9 +651,9 @@ static void cdns_spi_remove(struct platform_device *pdev)
*/
static int __maybe_unused cdns_spi_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct spi_controller *ctlr = dev_get_drvdata(dev);
return spi_master_suspend(master);
return spi_controller_suspend(ctlr);
}
/**
@ -666,11 +666,11 @@ static int __maybe_unused cdns_spi_suspend(struct device *dev)
*/
static int __maybe_unused cdns_spi_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct spi_controller *ctlr = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
cdns_spi_init_hw(xspi);
return spi_master_resume(master);
return spi_controller_resume(ctlr);
}
/**
@ -683,8 +683,8 @@ static int __maybe_unused cdns_spi_resume(struct device *dev)
*/
static int __maybe_unused cdns_spi_runtime_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct spi_controller *ctlr = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
int ret;
ret = clk_prepare_enable(xspi->pclk);
@ -712,8 +712,8 @@ static int __maybe_unused cdns_spi_runtime_resume(struct device *dev)
*/
static int __maybe_unused cdns_spi_runtime_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_master_get_devdata(master);
struct spi_controller *ctlr = dev_get_drvdata(dev);
struct cdns_spi *xspi = spi_controller_get_devdata(ctlr);
clk_disable_unprepare(xspi->ref_clk);
clk_disable_unprepare(xspi->pclk);