Commit aa62325d authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'spi-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "The big theme for this release has been performance, we've had a
  series of unrelated overhauls of a few drivers all with a big
  peformance component.

  Otherwise it's been relatively quiet, highlights include:

   - A big overhaul of the spi-fsl-dspi driver improving the code
     quality, performance and stability from Vladimir Oltean.

   - A big performance enhancement for the bc2835 (Raspberry Pi) driver
     for unidirectional transfers from Lukas Wunner.

   - Improved performance on small transfers for the uniphier driver
     from Keiji Hayashibara.

   - Lots of coccinelle generated cleanups from Yue Haibing.

   - New device support for Freescale ls2080a and Nuvoton NPCM FIU"

* tag 'spi-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (102 commits)
  spi: mediatek: support large PA
  spi: mediatek: add spi support for mt6765 IC
  dt-bindings: spi: update bindings for MT6765 SoC
  spi: bcm2835: Speed up RX-only DMA transfers by zero-filling TX FIFO
  spi: bcm2835: Speed up TX-only DMA transfers by clearing RX FIFO
  dmaengine: bcm2835: Avoid accessing memory when copying zeroes
  spi: bcm2835: Cache CS register value for ->prepare_message()
  dmaengine: bcm2835: Document struct bcm2835_dmadev
  spi: Guarantee cacheline alignment of driver-private data
  dmaengine: bcm2835: Allow reusable descriptors
  dmaengine: bcm2835: Allow cyclic transactions without interrupt
  spi: bcm2835: Drop dma_pending flag
  spi: bcm2835: Work around DONE bit erratum
  spi-gpio: Use PTR_ERR_OR_ZERO() in spi_gpio_request()
  spi: Use an abbreviated pointer to ctlr->cur_msg in __spi_pump_messages
  spi: npcm-fiu: remove set but not used variable 'retlen'
  spi: fsl-spi: use devm_platform_ioremap_resource() to simplify code
  spi: zynq-qspi: use devm_platform_ioremap_resource() to simplify code
  spi: zynqmp: use devm_platform_ioremap_resource() to simplify code
  spi: xlp: use devm_platform_ioremap_resource() to simplify code
  ...
parents c4d11ccb b769c5ba
* Nuvoton FLASH Interface Unit (FIU) SPI Controller
NPCM FIU supports single, dual and quad communication interface.
The NPCM7XX supports three FIU modules,
FIU0 and FIUx supports two chip selects,
FIU3 support four chip select.
Required properties:
- compatible : "nuvoton,npcm750-fiu" for the NPCM7XX BMC
- #address-cells : should be 1.
- #size-cells : should be 0.
- reg : the first contains the register location and length,
the second contains the memory mapping address and length
- reg-names: Should contain the reg names "control" and "memory"
- clocks : phandle of FIU reference clock.
Required properties in case the pins can be muxed:
- pinctrl-names : a pinctrl state named "default" must be defined.
- pinctrl-0 : phandle referencing pin configuration of the device.
Optional property:
- nuvoton,spix-mode: enable spix-mode for an expansion bus to an ASIC or CPLD.
Aliases:
- All the FIU controller nodes should be represented in the aliases node using
the following format 'fiu{n}' where n is a unique number for the alias.
In the NPCM7XX BMC:
fiu0 represent fiu 0 controller
fiu1 represent fiu 3 controller
fiu2 represent fiu x controller
Example:
fiu3: spi@c00000000 {
compatible = "nuvoton,npcm750-fiu";
#address-cells = <1>;
#size-cells = <0>;
reg = <0xfb000000 0x1000>, <0x80000000 0x10000000>;
reg-names = "control", "memory";
clocks = <&clk NPCM7XX_CLK_AHB>;
pinctrl-names = "default";
pinctrl-0 = <&spi3_pins>;
spi-nor@0 {
...
};
};
......@@ -31,7 +31,7 @@ properties:
If that property is used, the number of chip selects will be
increased automatically with max(cs-gpios, hardware chip selects).
So if, for example, the controller has 2 CS lines, and the
So if, for example, the controller has 4 CS lines, and the
cs-gpios looks like this
cs-gpios = <&gpio1 0 0>, <0>, <&gpio1 1 0>, <&gpio1 2 0>;
......
......@@ -3,9 +3,8 @@
Required properties:
- compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
"fsl,imx7d-qspi", "fsl,imx6ul-qspi",
"fsl,ls1021a-qspi"
"fsl,ls1021a-qspi", "fsl,ls2080a-qspi"
or
"fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi",
"fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
- reg : the first contains the register location and length,
the second contains the memory mapping address and length
......@@ -34,7 +33,11 @@ qspi0: quadspi@40044000 {
clock-names = "qspi_en", "qspi";
flash0: s25fl128s@0 {
....
#address-cells = <1>;
#size-cells = <1>;
compatible = "spansion,s25fl128s", "jedec,spi-nor";
spi-max-frequency = <50000000>;
reg = <0>;
};
};
......
......@@ -5,6 +5,7 @@ Required properties:
- mediatek,mt2701-spi: for mt2701 platforms
- mediatek,mt2712-spi: for mt2712 platforms
- mediatek,mt6589-spi: for mt6589 platforms
- mediatek,mt6765-spi: for mt6765 platforms
- mediatek,mt7622-spi: for mt7622 platforms
- "mediatek,mt7629-spi", "mediatek,mt7622-spi": for mt7629 platforms
- mediatek,mt8135-spi: for mt8135 platforms
......
......@@ -25,18 +25,23 @@ data by ADI software channels at the same time, or two parallel routine of setti
ADI registers will make ADI controller registers chaos to lead incorrect results.
Then we need one hardware spinlock to synchronize between the multiple subsystems.
The new version ADI controller supplies multiple master channels for different
subsystem accessing, that means no need to add hardware spinlock to synchronize,
thus change the hardware spinlock support to be optional to keep backward
compatibility.
Required properties:
- compatible: Should be "sprd,sc9860-adi".
- reg: Offset and length of ADI-SPI controller register space.
- hwlocks: Reference to a phandle of a hwlock provider node.
- hwlock-names: Reference to hwlock name strings defined in the same order
as the hwlocks, should be "adi".
- #address-cells: Number of cells required to define a chip select address
on the ADI-SPI bus. Should be set to 1.
- #size-cells: Size of cells required to define a chip select address size
on the ADI-SPI bus. Should be set to 0.
Optional properties:
- hwlocks: Reference to a phandle of a hwlock provider node.
- hwlock-names: Reference to hwlock name strings defined in the same order
as the hwlocks, should be "adi".
- sprd,hw-channels: This is an array of channel values up to 49 channels.
The first value specifies the hardware channel id which is used to
transfer data triggered by hardware automatically, and the second
......
......@@ -103,7 +103,7 @@ static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
};
static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.dev_id = "spi0",
.table = {
GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
{ },
......
......@@ -73,7 +73,7 @@ static struct spi_board_info simone_spi_devices[] __initdata = {
* v1.3 parts will still work, since the signal on SFRMOUT is automatic.
*/
static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.dev_id = "spi0",
.table = {
GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
{ },
......
......@@ -267,7 +267,7 @@ static struct spi_board_info bk3_spi_board_info[] __initdata = {
* goes through CPLD
*/
static struct gpiod_lookup_table bk3_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.dev_id = "spi0",
.table = {
GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW),
{ },
......@@ -316,7 +316,7 @@ static struct spi_board_info ts72xx_spi_devices[] __initdata = {
};
static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.dev_id = "spi0",
.table = {
/* DIO_17 */
GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW),
......
......@@ -242,7 +242,7 @@ static struct spi_board_info vision_spi_board_info[] __initdata = {
};
static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.dev_id = "spi0",
.table = {
GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),
......
......@@ -37,10 +37,19 @@
#define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
#define BCM2835_DMA_CHAN_NAME_SIZE 8
/**
* struct bcm2835_dmadev - BCM2835 DMA controller
* @ddev: DMA device
* @base: base address of register map
* @dma_parms: DMA parameters (to convey 1 GByte max segment size to clients)
* @zero_page: bus address of zero page (to detect transactions copying from
* zero page and avoid accessing memory if so)
*/
struct bcm2835_dmadev {
struct dma_device ddev;
void __iomem *base;
struct device_dma_parameters dma_parms;
dma_addr_t zero_page;
};
struct bcm2835_dma_cb {
......@@ -687,11 +696,12 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
size_t period_len, enum dma_transfer_direction direction,
unsigned long flags)
{
struct bcm2835_dmadev *od = to_bcm2835_dma_dev(chan->device);
struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
struct bcm2835_desc *d;
dma_addr_t src, dst;
u32 info = BCM2835_DMA_WAIT_RESP;
u32 extra = BCM2835_DMA_INT_EN;
u32 extra = 0;
size_t max_len = bcm2835_dma_max_frame_length(c);
size_t frames;
......@@ -707,6 +717,11 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
return NULL;
}
if (flags & DMA_PREP_INTERRUPT)
extra |= BCM2835_DMA_INT_EN;
else
period_len = buf_len;
/*
* warn if buf_len is not a multiple of period_len - this may leed
* to unexpected latencies for interrupts and thus audiable clicks
......@@ -732,6 +747,10 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
dst = c->cfg.dst_addr;
src = buf_addr;
info |= BCM2835_DMA_D_DREQ | BCM2835_DMA_S_INC;
/* non-lite channels can write zeroes w/o accessing memory */
if (buf_addr == od->zero_page && !c->is_lite_channel)
info |= BCM2835_DMA_S_IGNORE;
}
/* calculate number of frames */
......@@ -778,7 +797,10 @@ static int bcm2835_dma_terminate_all(struct dma_chan *chan)
/* stop DMA activity */
if (c->desc) {
if (c->desc->vd.tx.flags & DMA_PREP_INTERRUPT)
vchan_terminate_vdesc(&c->desc->vd);
else
vchan_vdesc_fini(&c->desc->vd);
c->desc = NULL;
bcm2835_dma_abort(c);
}
......@@ -831,6 +853,9 @@ static void bcm2835_dma_free(struct bcm2835_dmadev *od)
list_del(&c->vc.chan.device_node);
tasklet_kill(&c->vc.task);
}
dma_unmap_page_attrs(od->ddev.dev, od->zero_page, PAGE_SIZE,
DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
}
static const struct of_device_id bcm2835_dma_of_match[] = {
......@@ -907,11 +932,20 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) |
BIT(DMA_MEM_TO_MEM);
od->ddev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
od->ddev.descriptor_reuse = true;
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);
platform_set_drvdata(pdev, od);
od->zero_page = dma_map_page_attrs(od->ddev.dev, ZERO_PAGE(0), 0,
PAGE_SIZE, DMA_TO_DEVICE,
DMA_ATTR_SKIP_CPU_SYNC);
if (dma_mapping_error(od->ddev.dev, od->zero_page)) {
dev_err(&pdev->dev, "Failed to map zero page\n");
return -ENOMEM;
}
/* Request DMA channel mask from device tree */
if (of_property_read_u32(pdev->dev.of_node,
"brcm,dma-channel-mask",
......
......@@ -706,7 +706,7 @@ static int cros_ec_spi_devm_high_pri_alloc(struct device *dev,
struct cros_ec_spi *ec_spi)
{
struct sched_param sched_priority = {
.sched_priority = MAX_RT_PRIO - 1,
.sched_priority = MAX_RT_PRIO / 2,
};
int err;
......
......@@ -433,6 +433,16 @@ config SPI_MT7621
help
This selects a driver for the MediaTek MT7621 SPI Controller.
config SPI_NPCM_FIU
tristate "Nuvoton NPCM FLASH Interface Unit"
depends on ARCH_NPCM || COMPILE_TEST
depends on OF && HAS_IOMEM
help
This enables support for the Flash Interface Unit SPI controller
in master mode.
This driver does not support generic SPI. The implementation only
supports spi-mem interface.
config SPI_NPCM_PSPI
tristate "Nuvoton NPCM PSPI Controller"
depends on ARCH_NPCM || COMPILE_TEST
......
......@@ -63,6 +63,7 @@ obj-$(CONFIG_SPI_MT65XX) += spi-mt65xx.o
obj-$(CONFIG_SPI_MT7621) += spi-mt7621.o
obj-$(CONFIG_SPI_MXIC) += spi-mxic.o
obj-$(CONFIG_SPI_MXS) += spi-mxs.o
obj-$(CONFIG_SPI_NPCM_FIU) += spi-npcm-fiu.o
obj-$(CONFIG_SPI_NPCM_PSPI) += spi-npcm-pspi.o
obj-$(CONFIG_SPI_NUC900) += spi-nuc900.o
obj-$(CONFIG_SPI_NXP_FLEXSPI) += spi-nxp-fspi.o
......
......@@ -526,7 +526,6 @@ static int atmel_qspi_probe(struct platform_device *pdev)
/* Request the IRQ */
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "missing IRQ\n");
err = irq;
goto disable_qspick;
}
......
......@@ -170,7 +170,6 @@ static int altera_spi_probe(struct platform_device *pdev)
{
struct altera_spi *hw;
struct spi_master *master;
struct resource *res;
int err = -ENODEV;
master = spi_alloc_master(&pdev->dev, sizeof(struct altera_spi));
......@@ -189,8 +188,7 @@ static int altera_spi_probe(struct platform_device *pdev)
hw = spi_master_get_devdata(master);
/* find and map our resources */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hw->base = devm_ioremap_resource(&pdev->dev, res);
hw->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(hw->base)) {
err = PTR_ERR(hw->base);
goto exit;
......
......@@ -817,7 +817,6 @@ static int a3700_spi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *of_node = dev->of_node;
struct resource *res;
struct spi_master *master;
struct a3700_spi *spi;
u32 num_cs = 0;
......@@ -855,8 +854,7 @@ static int a3700_spi_probe(struct platform_device *pdev)
spi->master = master;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
spi->base = devm_ioremap_resource(dev, res);
spi->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(spi->base)) {
ret = PTR_ERR(spi->base);
goto error;
......@@ -864,7 +862,6 @@ static int a3700_spi_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "could not get irq: %d\n", irq);
ret = -ENXIO;
goto error;
}
......
......@@ -139,7 +139,6 @@ static int ath79_spi_probe(struct platform_device *pdev)
struct spi_master *master;
struct ath79_spi *sp;
struct ath79_spi_platform_data *pdata;
struct resource *r;
unsigned long rate;
int ret;
......@@ -169,8 +168,7 @@ static int ath79_spi_probe(struct platform_device *pdev)
sp->bitbang.txrx_word[SPI_MODE_0] = ath79_spi_txrx_mode0;
sp->bitbang.flags = SPI_CS_HIGH;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
sp->base = devm_ioremap_resource(&pdev->dev, r);
sp->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(sp->base)) {
ret = PTR_ERR(sp->base);
goto err_put_master;
......
......@@ -23,6 +23,7 @@
#include <linux/gpio/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
#include <trace/events/spi.h>
/* SPI register offsets */
#define SPI_CR 0x0000
......@@ -1409,9 +1410,13 @@ static int atmel_spi_transfer_one_message(struct spi_master *master,
msg->actual_length = 0;
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
trace_spi_transfer_start(msg, xfer);
ret = atmel_spi_one_transfer(master, msg, xfer);
if (ret)
goto msg_done;
trace_spi_transfer_stop(msg, xfer);
}
if (as->use_pdc)
......
......@@ -460,7 +460,6 @@ static int spi_engine_probe(struct platform_device *pdev)
struct spi_engine *spi_engine;
struct spi_master *master;
unsigned int version;
struct resource *res;
int irq;
int ret;
......@@ -480,8 +479,7 @@ static int spi_engine_probe(struct platform_device *pdev)
spin_lock_init(&spi_engine->lock);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
spi_engine->base = devm_ioremap_resource(&pdev->dev, res);
spi_engine->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(spi_engine->base)) {
ret = PTR_ERR(spi_engine->base);
goto err_put_master;
......
......@@ -343,7 +343,7 @@ static int bcm_qspi_bspi_set_flex_mode(struct bcm_qspi *qspi,
{
int bpc = 0, bpp = 0;
u8 command = op->cmd.opcode;
int width = op->cmd.buswidth ? op->cmd.buswidth : SPI_NBITS_SINGLE;
int width = op->data.buswidth ? op->data.buswidth : SPI_NBITS_SINGLE;
int addrlen = op->addr.nbytes;
int flex_mode = 1;
......@@ -897,6 +897,7 @@ static int bcm_qspi_transfer_one(struct spi_master *master,
read_from_hw(qspi, slots);
}
bcm_qspi_enable_bspi(qspi);
return 0;
}
......@@ -981,7 +982,7 @@ static int bcm_qspi_exec_mem_op(struct spi_mem *mem,
if (mspi_read)
return bcm_qspi_mspi_exec_mem_op(spi, op);
ret = bcm_qspi_bspi_set_mode(qspi, op, -1);
ret = bcm_qspi_bspi_set_mode(qspi, op, 0);
if (!ret)
ret = bcm_qspi_bspi_exec_mem_op(spi, op);
......
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