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tty/serial: atmel: make the driver DT only 

Now that AVR32 is gone, platform_data are not used to initialize the driver
anymore, remove that path from the driver. Also remove the now unused
struct atmel_uart_data.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexandre Belloni 2017-06-13 22:24:39 +02:00 committed by Greg Kroah-Hartman
parent 274a5ed6d8
commit 92c8f7c0e1
2 changed files with 35 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
drivers/tty/serial/atmel_serial.c
View File

@ -1638,72 +1638,56 @@ static void atmel_init_property(struct atmel_uart_port *atmel_port,
struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct atmel_uart_data *pdata = dev_get_platdata(&pdev->dev);
if (np) {
/* DMA/PDC usage specification */
if (of_property_read_bool(np, "atmel,use-dma-rx")) {
if (of_property_read_bool(np, "dmas")) {
atmel_port->use_dma_rx = true;
atmel_port->use_pdc_rx = false;
} else {
atmel_port->use_dma_rx = false;
atmel_port->use_pdc_rx = true;
}
/* DMA/PDC usage specification */
if (of_property_read_bool(np, "atmel,use-dma-rx")) {
if (of_property_read_bool(np, "dmas")) {
atmel_port->use_dma_rx = true;
atmel_port->use_pdc_rx = false;
} else {
atmel_port->use_dma_rx = false;
atmel_port->use_pdc_rx = false;
atmel_port->use_pdc_rx = true;
}
if (of_property_read_bool(np, "atmel,use-dma-tx")) {
if (of_property_read_bool(np, "dmas")) {
atmel_port->use_dma_tx = true;
atmel_port->use_pdc_tx = false;
} else {
atmel_port->use_dma_tx = false;
atmel_port->use_pdc_tx = true;
}
} else {
atmel_port->use_dma_tx = false;
atmel_port->use_pdc_tx = false;
}
} else {
atmel_port->use_pdc_rx = pdata->use_dma_rx;
atmel_port->use_pdc_tx = pdata->use_dma_tx;
atmel_port->use_dma_rx = false;
atmel_port->use_dma_tx = false;
atmel_port->use_pdc_rx = false;
}
if (of_property_read_bool(np, "atmel,use-dma-tx")) {
if (of_property_read_bool(np, "dmas")) {
atmel_port->use_dma_tx = true;
atmel_port->use_pdc_tx = false;
} else {
atmel_port->use_dma_tx = false;
atmel_port->use_pdc_tx = true;
}
} else {
atmel_port->use_dma_tx = false;
atmel_port->use_pdc_tx = false;
}
}
static void atmel_init_rs485(struct uart_port *port,
struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct atmel_uart_data *pdata = dev_get_platdata(&pdev->dev);
if (np) {
struct serial_rs485 *rs485conf = &port->rs485;
u32 rs485_delay[2];
/* rs485 properties */
if (of_property_read_u32_array(np, "rs485-rts-delay",
rs485_delay, 2) == 0) {
rs485conf->delay_rts_before_send = rs485_delay[0];
rs485conf->delay_rts_after_send = rs485_delay[1];
rs485conf->flags = 0;
}
struct serial_rs485 *rs485conf = &port->rs485;
u32 rs485_delay[2];
if (of_get_property(np, "rs485-rx-during-tx", NULL))
rs485conf->flags |= SER_RS485_RX_DURING_TX;
if (of_get_property(np, "linux,rs485-enabled-at-boot-time",
NULL))
rs485conf->flags |= SER_RS485_ENABLED;
} else {
port->rs485 = pdata->rs485;
/* rs485 properties */
if (of_property_read_u32_array(np, "rs485-rts-delay",
rs485_delay, 2) == 0) {
rs485conf->delay_rts_before_send = rs485_delay[0];
rs485conf->delay_rts_after_send = rs485_delay[1];
rs485conf->flags = 0;
}
if (of_get_property(np, "rs485-rx-during-tx", NULL))
rs485conf->flags |= SER_RS485_RX_DURING_TX;
if (of_get_property(np, "linux,rs485-enabled-at-boot-time", NULL))
rs485conf->flags |= SER_RS485_ENABLED;
}
static void atmel_set_ops(struct uart_port *port)
@ -2385,7 +2369,6 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
{
int ret;
struct uart_port *port = &atmel_port->uart;
struct atmel_uart_data *pdata = dev_get_platdata(&pdev->dev);
atmel_init_property(atmel_port, pdev);
atmel_set_ops(port);
@ -2393,24 +2376,17 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
atmel_init_rs485(port, pdev);
port->iotype = UPIO_MEM;
port->flags = UPF_BOOT_AUTOCONF;
port->flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP;
port->ops = &atmel_pops;
port->fifosize = 1;
port->dev = &pdev->dev;
port->mapbase = pdev->resource[0].start;
port->irq = pdev->resource[1].start;
port->rs485_config = atmel_config_rs485;
port->membase = NULL;
memset(&atmel_port->rx_ring, 0, sizeof(atmel_port->rx_ring));
if (pdata && pdata->regs) {
/* Already mapped by setup code */
port->membase = pdata->regs;
} else {
port->flags |= UPF_IOREMAP;
port->membase = NULL;
}
/* for console, the clock could already be configured */
if (!atmel_port->clk) {
atmel_port->clk = clk_get(&pdev->dev, "usart");
@ -2744,19 +2720,13 @@ static int atmel_serial_probe(struct platform_device *pdev)
{
struct atmel_uart_port *atmel_port;
struct device_node *np = pdev->dev.of_node;
struct atmel_uart_data *pdata = dev_get_platdata(&pdev->dev);
void *data;
int ret = -ENODEV;
bool rs485_enabled;
BUILD_BUG_ON(ATMEL_SERIAL_RINGSIZE & (ATMEL_SERIAL_RINGSIZE - 1));
if (np)
ret = of_alias_get_id(np, "serial");
else
if (pdata)
ret = pdata->num;
ret = of_alias_get_id(np, "serial");
if (ret < 0)
/* port id not found in platform data nor device-tree aliases:
* auto-enumerate it */

10
include/linux/platform_data/atmel.h
View File

@ -9,7 +9,6 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/serial.h>
/* Compact Flash */
struct at91_cf_data {
@ -42,15 +41,6 @@ struct atmel_nand_data {
bool need_reset_workaround;
};
/* Serial */
struct atmel_uart_data {
int num; /* port num */
short use_dma_tx; /* use transmit DMA? */
short use_dma_rx; /* use receive DMA? */
void __iomem *regs; /* virt. base address, if any */
struct serial_rs485 rs485; /* rs485 settings */
};
/* FIXME: this needs a better location, but gets stuff building again */
extern int at91_suspend_entering_slow_clock(void);