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spi: Updates for v5.1

Browse source 
A fairly quiet release for SPI, the biggest thing is the conversion to
 use GPIO descriptors which is now 90% done but still needs some
 stragglers converting.
 
  - Support for inter-word delays.
  - Conversion of the core and most drivers to use GPIO descriptors for
    GPIO controlled chip selects.
  - New drivers for NXP FlexSPI and QuadSPI, SiFive and Spreadtrum.
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Merge tag 'spi-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "A fairly quiet release for SPI, the biggest thing is the conversion to
  use GPIO descriptors which is now 90% done but still needs some
  stragglers converting.

  Summary:

   - Support for inter-word delays

   - Conversion of the core and most drivers to use GPIO descriptors for
     GPIO controlled chip selects

   - New drivers for NXP FlexSPI and QuadSPI, SiFive and Spreadtrum"

* tag 'spi-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (104 commits)
  spi: sh-msiof: Restrict bits per word to 8/16/24/32 on R-Car Gen2/3
  spi: sifive: Remove redundant dev_err call in sifive_spi_probe()
  spi: sifive: Remove spi_master_put in sifive_spi_remove()
  spi: spi-gpio: fix SPI_CS_HIGH capability
  spi: pxa2xx: Setup maximum supported DMA transfer length
  spi: sifive: Add driver for the SiFive SPI controller
  spi: sifive: Add DT documentation for SiFive SPI controller
  spi: sprd: Add a prefix for SPI DMA channel macros
  spi: sprd: spi: sprd: Add DMA mode support
  dt-bindings: spi: Add the DMA properties for the SPI dma mode
  spi: sprd: Add the SPI irq function for the SPI DMA mode
  dt-bindings: spi: imx: Add an entry for the i.MX8QM compatible
  spi: use gpio[d]_set_value_cansleep for setting chipselect GPIO
  spi: gpio: Advertise support for SPI_CS_HIGH
  spi: sh-msiof: Replace spi_master by spi_controller
  spi: sh-hspi: Replace spi_master by spi_controller
  spi: rspi: Replace spi_master by spi_controller
  spi: atmel-quadspi: add support for sam9x60 qspi controller
  dt-bindings: spi: atmel-quadspi: QuadSPI driver for Microchip SAM9X60
  spi: atmel-quadspi: add support for named peripheral clock
  ...
This commit is contained in:
Linus Torvalds 2019-03-04 19:23:56 -08:00
commit dcc75ddea1
72 changed files with 5093 additions and 2506 deletions
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19
include/linux/platform_data/spi-ath79.h Normal file
View file

@ -0,0 +1,19 @@
/*
* Platform data definition for Atheros AR71XX/AR724X/AR913X SPI controller
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#ifndef _ATH79_SPI_PLATFORM_H
#define _ATH79_SPI_PLATFORM_H
struct ath79_spi_platform_data {
unsigned bus_num;
unsigned num_chipselect;
};
#endif /* _ATH79_SPI_PLATFORM_H */

4
include/linux/spi/pxa2xx_spi.h
View file

@ -22,7 +22,7 @@
struct dma_chan;
/* device.platform_data for SSP controller devices */
struct pxa2xx_spi_master {
struct pxa2xx_spi_controller {
u16 num_chipselect;
u8 enable_dma;
bool is_slave;
@ -54,7 +54,7 @@ struct pxa2xx_spi_chip {
#include <linux/clk.h>
extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info);
#endif
#endif

5
include/linux/spi/spi-mem.h
View file

@ -330,6 +330,11 @@ ssize_t spi_mem_dirmap_read(struct spi_mem_dirmap_desc *desc,
u64 offs, size_t len, void *buf);
ssize_t spi_mem_dirmap_write(struct spi_mem_dirmap_desc *desc,
u64 offs, size_t len, const void *buf);
struct spi_mem_dirmap_desc *
devm_spi_mem_dirmap_create(struct device *dev, struct spi_mem *mem,
const struct spi_mem_dirmap_info *info);
void devm_spi_mem_dirmap_destroy(struct device *dev,
struct spi_mem_dirmap_desc *desc);
int spi_mem_driver_register_with_owner(struct spi_mem_driver *drv,
struct module *owner);

29
include/linux/spi/spi.h
View file

@ -12,6 +12,7 @@
#include <linux/kthread.h>
#include <linux/completion.h>
#include <linux/scatterlist.h>
#include <linux/gpio/consumer.h>
struct dma_chan;
struct property_entry;
@ -116,8 +117,13 @@ void spi_statistics_add_transfer_stats(struct spi_statistics *stats,
* @modalias: Name of the driver to use with this device, or an alias
* for that name. This appears in the sysfs "modalias" attribute
* for driver coldplugging, and in uevents used for hotplugging
* @cs_gpio: gpio number of the chipselect line (optional, -ENOENT when
* @cs_gpio: LEGACY: gpio number of the chipselect line (optional, -ENOENT when
* not using a GPIO line) use cs_gpiod in new drivers by opting in on
* the spi_master.
* @cs_gpiod: gpio descriptor of the chipselect line (optional, NULL when
* not using a GPIO line)
* @word_delay_usecs: microsecond delay to be inserted between consecutive
* words of a transfer
*
* @statistics: statistics for the spi_device
*
@ -163,7 +169,9 @@ struct spi_device {
void *controller_data;
char modalias[SPI_NAME_SIZE];
const char *driver_override;
int cs_gpio; /* chip select gpio */
int cs_gpio; /* LEGACY: chip select gpio */
struct gpio_desc *cs_gpiod; /* chip select gpio desc */
uint8_t word_delay_usecs; /* inter-word delay */
/* the statistics */
struct spi_statistics statistics;
@ -376,9 +384,17 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* controller has native support for memory like operations.
* @unprepare_message: undo any work done by prepare_message().
* @slave_abort: abort the ongoing transfer request on an SPI slave controller
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
* number. Any individual value may be -ENOENT for CS lines that
* @cs_gpios: LEGACY: array of GPIO descs to use as chip select lines; one per
* CS number. Any individual value may be -ENOENT for CS lines that
* are not GPIOs (driven by the SPI controller itself). Use the cs_gpiods
* in new drivers.
* @cs_gpiods: Array of GPIO descs to use as chip select lines; one per CS
* number. Any individual value may be NULL for CS lines that
* are not GPIOs (driven by the SPI controller itself).
* @use_gpio_descriptors: Turns on the code in the SPI core to parse and grab
* GPIO descriptors rather than using global GPIO numbers grabbed by the
* driver. This will fill in @cs_gpiods and @cs_gpios should not be used,
* and SPI devices will have the cs_gpiod assigned rather than cs_gpio.
* @statistics: statistics for the spi_controller
* @dma_tx: DMA transmit channel
* @dma_rx: DMA receive channel
@ -557,6 +573,8 @@ struct spi_controller {
/* gpio chip select */
int *cs_gpios;
struct gpio_desc **cs_gpiods;
bool use_gpio_descriptors;
/* statistics */
struct spi_statistics statistics;
@ -706,6 +724,8 @@ extern void spi_res_release(struct spi_controller *ctlr,
* @delay_usecs: microseconds to delay after this transfer before
* (optionally) changing the chipselect status, then starting
* the next transfer or completing this @spi_message.
* @word_delay_usecs: microseconds to inter word delay after each word size
* (set by bits_per_word) transmission.
* @word_delay: clock cycles to inter word delay after each word size
* (set by bits_per_word) transmission.
* @transfer_list: transfers are sequenced through @spi_message.transfers
@ -788,6 +808,7 @@ struct spi_transfer {
#define SPI_NBITS_DUAL 0x02 /* 2bits transfer */
#define SPI_NBITS_QUAD 0x04 /* 4bits transfer */
u8 bits_per_word;
u8 word_delay_usecs;
u16 delay_usecs;
u32 speed_hz;
u16 word_delay;