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- New Drivers

Browse source 
- Add support for USART SPI to AT91*
 
  - New Functionality
    - Add support for Audio CODECs to motorola-cpcap
 
  - Fix-ups
    - DT documentation fix-ups; atmel-usart
    - Staticise functions/structs; spi-at91-usart, arizona-core
    - Constify; ti-lmu
    - Fix memory leaks; menelaus
    - Change device 'wake-up' status; ti_am335x_tscadc, max8997
    - Power Management (suspend/resume) semantic changes; ti_am335x_adc, cros_ec, max8997
    - SPDX churn; sec-core (+ headers), max* (+ headers), intel* (+ headers),
    - Trivial (whitespace, email addresses, alphabetisise); Kconfig, adp5520, intel_soc_pmic_*
    - Build as module; sec-irq
    - Use new %pOFn printk format for device_node.name; max77620
    - Remove unused code; madera
    - Use generic MACROs; intel_msic, intel_soc_pmic_crc
    - Move to GPIOD; ti-lmu
    - Use managed resources; ti-lmu
 
  - Bug Fixes
    - Add missing headers; at91-usart
    - Prevent device from entering low-power mode; arizona-core
    - Poll for BOOT_DONE to avoid still-booting NACK; madera-core
    - Prevent ADC read from shutting down device; mc13xxx-core
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Merge tag 'mfd-next-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers
   - Add support for USART SPI to AT91*

  New Functionality
   - Add support for Audio CODECs to motorola-cpcap

  Fix-ups
   - DT documentation fix-ups; atmel-usart
   - Staticise functions/structs; spi-at91-usart, arizona-core
   - Constify; ti-lmu
   - Fix memory leaks; menelaus
   - Change device 'wake-up' status; ti_am335x_tscadc, max8997
   - Power Management (suspend/resume) semantic changes; ti_am335x_adc, cros_ec, max8997
   - SPDX churn; sec-core (+ headers), max* (+ headers), intel* (+ headers),
   - Trivial (whitespace, email addresses, alphabetisise); Kconfig, adp5520, intel_soc_pmic_*
   - Build as module; sec-irq
   - Use new %pOFn printk format for device_node.name; max77620
   - Remove unused code; madera
   - Use generic MACROs; intel_msic, intel_soc_pmic_crc
   - Move to GPIOD; ti-lmu
   - Use managed resources; ti-lmu

  Bug Fixes
   - Add missing headers; at91-usart
   - Prevent device from entering low-power mode; arizona-core
   - Poll for BOOT_DONE to avoid still-booting NACK; madera-core
   - Prevent ADC read from shutting down device; mc13xxx-core"

* tag 'mfd-next-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (45 commits)
  mfd: cros_ec: Avoid unneeded internal declaration warning
  mfd: ti-lmu: Use of_device_get_match_data() helper
  mfd: ti-lmu: Use managed resource for everything
  mfd: ti-lmu: Switch to GPIOD
  mfd: ti-lmu: constify mfd_cell tables
  mfd: max8997: Disable interrupt handling for suspend/resume cycle
  mfd: max8997: Enale irq-wakeup unconditionally
  mfd: arizona: Make array mclk_name static, shrinks object size
  MAINTAINERS: Add myself as designated reviewer of Intel MFD PMIC
  mfd: Convert Intel PMIC drivers to use SPDX identifier 1;5201;0c Reduce size of duplicated comments by switching to use SPDX identifier.
  mfd: Sort headers alphabetically for Intel PMIC drivers
  mfd: intel_soc_pmic_bxtwc: Chain power button IRQs as well
  mfd: intel_soc_pmic_crc: Use REGMAP_IRQ_REG() macro
  mfd: intel_soc_pmic_crc: Use DEFINE_RES_IRQ_NAMED() macro
  mfd: intel_msic: Use DEFINE_RES_IRQ() macro
  mfd: motorola-cpcap: Add audio-codec support
  mfd: mc13xxx-core: Fix PMIC shutdown when reading ADC values
  mfd: madera: Remove unused forward reference
  mfd: max77620: Convert to using %pOFn instead of device_node.name
  mfd: madera: Don't use regmap_read_poll_timeout to poll for BOOT_DONE
  ...
This commit is contained in:
Linus Torvalds 2018-10-25 06:19:15 -07:00
commit 3ea172c84d
72 changed files with 1045 additions and 733 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/tty/serial/Kconfig
View file

@ -118,6 +118,7 @@ config SERIAL_ATMEL
depends on ARCH_AT91 || COMPILE_TEST
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
select MFD_AT91_USART
help
This enables the driver for the on-chip UARTs of the Atmel
AT91 processors.

42
drivers/tty/serial/atmel_serial.c
View file

@ -193,8 +193,7 @@ static struct console atmel_console;
#if defined(CONFIG_OF)
static const struct of_device_id atmel_serial_dt_ids[] = {
{ .compatible = "atmel,at91rm9200-usart" },
{ .compatible = "atmel,at91sam9260-usart" },
{ .compatible = "atmel,at91rm9200-usart-serial" },
{ /* sentinel */ }
};
#endif
@ -915,6 +914,7 @@ static void atmel_tx_dma(struct uart_port *port)
static int atmel_prepare_tx_dma(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
struct device *mfd_dev = port->dev->parent;
dma_cap_mask_t mask;
struct dma_slave_config config;
int ret, nent;
@ -922,7 +922,7 @@ static int atmel_prepare_tx_dma(struct uart_port *port)
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
atmel_port->chan_tx = dma_request_slave_channel(port->dev, "tx");
atmel_port->chan_tx = dma_request_slave_channel(mfd_dev, "tx");
if (atmel_port->chan_tx == NULL)
goto chan_err;
dev_info(port->dev, "using %s for tx DMA transfers\n",
@ -1093,6 +1093,7 @@ static void atmel_rx_from_dma(struct uart_port *port)
static int atmel_prepare_rx_dma(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
struct device *mfd_dev = port->dev->parent;
struct dma_async_tx_descriptor *desc;
dma_cap_mask_t mask;
struct dma_slave_config config;
@ -1104,7 +1105,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
dma_cap_zero(mask);
dma_cap_set(DMA_CYCLIC, mask);
atmel_port->chan_rx = dma_request_slave_channel(port->dev, "rx");
atmel_port->chan_rx = dma_request_slave_channel(mfd_dev, "rx");
if (atmel_port->chan_rx == NULL)
goto chan_err;
dev_info(port->dev, "using %s for rx DMA transfers\n",
@ -2222,8 +2223,8 @@ static const char *atmel_type(struct uart_port *port)
*/
static void atmel_release_port(struct uart_port *port)
{
struct platform_device *pdev = to_platform_device(port->dev);
int size = pdev->resource[0].end - pdev->resource[0].start + 1;
struct platform_device *mpdev = to_platform_device(port->dev->parent);
int size = resource_size(mpdev->resource);
release_mem_region(port->mapbase, size);
@ -2238,8 +2239,8 @@ static void atmel_release_port(struct uart_port *port)
*/
static int atmel_request_port(struct uart_port *port)
{
struct platform_device *pdev = to_platform_device(port->dev);
int size = pdev->resource[0].end - pdev->resource[0].start + 1;
struct platform_device *mpdev = to_platform_device(port->dev->parent);
int size = resource_size(mpdev->resource);
if (!request_mem_region(port->mapbase, size, "atmel_serial"))
return -EBUSY;
@ -2341,27 +2342,28 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port,
{
int ret;
struct uart_port *port = &atmel_port->uart;
struct platform_device *mpdev = to_platform_device(pdev->dev.parent);
atmel_init_property(atmel_port, pdev);
atmel_set_ops(port);
uart_get_rs485_mode(&pdev->dev, &port->rs485);
uart_get_rs485_mode(&mpdev->dev, &port->rs485);
port->iotype = UPIO_MEM;
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->mapbase = mpdev->resource[0].start;
port->irq = mpdev->resource[1].start;
port->rs485_config = atmel_config_rs485;
port->membase = NULL;
port->membase = NULL;
memset(&atmel_port->rx_ring, 0, sizeof(atmel_port->rx_ring));
/* for console, the clock could already be configured */
if (!atmel_port->clk) {
atmel_port->clk = clk_get(&pdev->dev, "usart");
atmel_port->clk = clk_get(&mpdev->dev, "usart");
if (IS_ERR(atmel_port->clk)) {
ret = PTR_ERR(atmel_port->clk);
atmel_port->clk = NULL;
@ -2694,13 +2696,22 @@ static void atmel_serial_probe_fifos(struct atmel_uart_port *atmel_port,
static int atmel_serial_probe(struct platform_device *pdev)
{
struct atmel_uart_port *atmel_port;
struct device_node *np = pdev->dev.of_node;
struct device_node *np = pdev->dev.parent->of_node;
void *data;
int ret = -ENODEV;
bool rs485_enabled;
BUILD_BUG_ON(ATMEL_SERIAL_RINGSIZE & (ATMEL_SERIAL_RINGSIZE - 1));
/*
* In device tree there is no node with "atmel,at91rm9200-usart-serial"
* as compatible string. This driver is probed by at91-usart mfd driver
* which is just a wrapper over the atmel_serial driver and
* spi-at91-usart driver. All attributes needed by this driver are
* found in of_node of parent.
*/
pdev->dev.of_node = np;
ret = of_alias_get_id(np, "serial");
if (ret < 0)
/* port id not found in platform data nor device-tree aliases:
@ -2836,6 +2847,7 @@ static int atmel_serial_remove(struct platform_device *pdev)
clk_put(atmel_port->clk);
atmel_port->clk = NULL;
pdev->dev.of_node = NULL;
return ret;
}
@ -2846,7 +2858,7 @@ static struct platform_driver atmel_serial_driver = {
.suspend = atmel_serial_suspend,
.resume = atmel_serial_resume,
.driver = {
.name = "atmel_usart",
.name = "atmel_usart_serial",
.of_match_table = of_match_ptr(atmel_serial_dt_ids),
},
};