summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/mach-ep93xx/edb93xx.c13
-rw-r--r--arch/arm/mach-ep93xx/simone.c11
-rw-r--r--arch/arm/mach-ep93xx/ts72xx.c25
-rw-r--r--arch/arm/mach-ep93xx/vision_ep9307.c15
-rw-r--r--drivers/spi/spi-ep93xx.c32
-rw-r--r--include/linux/platform_data/spi-ep93xx.h4
6 files changed, 48 insertions, 52 deletions
diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c
index 8e89ec8b6f0f..34e18e9556d9 100644
--- a/arch/arm/mach-ep93xx/edb93xx.c
+++ b/arch/arm/mach-ep93xx/edb93xx.c
@@ -29,6 +29,7 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
+#include <linux/gpio/machine.h>
#include <sound/cs4271.h>
@@ -105,13 +106,16 @@ static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
},
};
-static int edb93xx_spi_chipselects[] __initdata = {
- EP93XX_GPIO_LINE_EGPIO6,
+static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
+ .dev_id = "ep93xx-spi.0",
+ .table = {
+ GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
+ { },
+ },
};
static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
- .chipselect = edb93xx_spi_chipselects,
- .num_chipselect = ARRAY_SIZE(edb93xx_spi_chipselects),
+ /* Intentionally left blank */
};
static void __init edb93xx_register_spi(void)
@@ -123,6 +127,7 @@ static void __init edb93xx_register_spi(void)
else if (machine_is_edb9315a())
edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
+ gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
ARRAY_SIZE(edb93xx_spi_board_info));
}
diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c
index 80ccb984d521..f0f38c0dba52 100644
--- a/arch/arm/mach-ep93xx/simone.c
+++ b/arch/arm/mach-ep93xx/simone.c
@@ -77,13 +77,15 @@ static struct spi_board_info simone_spi_devices[] __initdata = {
* low between multi-message command blocks. From v1.4, it uses a GPIO instead.
* v1.3 parts will still work, since the signal on SFRMOUT is automatic.
*/
-static int simone_spi_chipselects[] __initdata = {
- EP93XX_GPIO_LINE_EGPIO1,
+static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
+ .dev_id = "ep93xx-spi.0",
+ .table = {
+ GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
+ { },
+ },
};
static struct ep93xx_spi_info simone_spi_info __initdata = {
- .chipselect = simone_spi_chipselects,
- .num_chipselect = ARRAY_SIZE(simone_spi_chipselects),
.use_dma = 1,
};
@@ -113,6 +115,7 @@ static void __init simone_init_machine(void)
ep93xx_register_i2c(simone_i2c_board_info,
ARRAY_SIZE(simone_i2c_board_info));
gpiod_add_lookup_table(&simone_mmc_spi_gpio_table);
+ gpiod_add_lookup_table(&simone_spi_cs_gpio_table);
ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
ARRAY_SIZE(simone_spi_devices));
simone_register_audio();
diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c
index 85b74ac943f0..a3a20c83c6b8 100644
--- a/arch/arm/mach-ep93xx/ts72xx.c
+++ b/arch/arm/mach-ep93xx/ts72xx.c
@@ -22,6 +22,7 @@
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>
#include <linux/platform_data/spi-ep93xx.h>
+#include <linux/gpio/machine.h>
#include <mach/gpio-ep93xx.h>
#include <mach/hardware.h>
@@ -269,13 +270,15 @@ static struct spi_board_info bk3_spi_board_info[] __initdata = {
* The all work is performed automatically by !SPI_FRAME (SFRM1) and
* goes through CPLD
*/
-static int bk3_spi_chipselects[] __initdata = {
- EP93XX_GPIO_LINE_F(3),
+static struct gpiod_lookup_table bk3_spi_cs_gpio_table = {
+ .dev_id = "ep93xx-spi.0",
+ .table = {
+ GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW),
+ { },
+ },
};
static struct ep93xx_spi_info bk3_spi_master __initdata = {
- .chipselect = bk3_spi_chipselects,
- .num_chipselect = ARRAY_SIZE(bk3_spi_chipselects),
.use_dma = 1,
};
@@ -316,13 +319,17 @@ static struct spi_board_info ts72xx_spi_devices[] __initdata = {
},
};
-static int ts72xx_spi_chipselects[] __initdata = {
- EP93XX_GPIO_LINE_F(2), /* DIO_17 */
+static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = {
+ .dev_id = "ep93xx-spi.0",
+ .table = {
+ /* DIO_17 */
+ GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW),
+ { },
+ },
};
static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
- .chipselect = ts72xx_spi_chipselects,
- .num_chipselect = ARRAY_SIZE(ts72xx_spi_chipselects),
+ /* Intentionally left blank */
};
static void __init ts72xx_init_machine(void)
@@ -339,6 +346,7 @@ static void __init ts72xx_init_machine(void)
if (board_is_ts7300())
platform_device_register(&ts73xx_fpga_device);
#endif
+ gpiod_add_lookup_table(&ts72xx_spi_cs_gpio_table);
ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
ARRAY_SIZE(ts72xx_spi_devices));
}
@@ -398,6 +406,7 @@ static void __init bk3_init_machine(void)
ep93xx_register_eth(&ts72xx_eth_data, 1);
+ gpiod_add_lookup_table(&bk3_spi_cs_gpio_table);
ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info,
ARRAY_SIZE(bk3_spi_board_info));
diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c
index 767ee64628dc..f95a644769e4 100644
--- a/arch/arm/mach-ep93xx/vision_ep9307.c
+++ b/arch/arm/mach-ep93xx/vision_ep9307.c
@@ -245,15 +245,17 @@ static struct spi_board_info vision_spi_board_info[] __initdata = {
},
};
-static int vision_spi_chipselects[] __initdata = {
- EP93XX_GPIO_LINE_EGPIO6,
- EP93XX_GPIO_LINE_EGPIO7,
- EP93XX_GPIO_LINE_G(2),
+static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
+ .dev_id = "ep93xx-spi.0",
+ .table = {
+ GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("G", 2, "cs", 2, GPIO_ACTIVE_LOW),
+ { },
+ },
};
static struct ep93xx_spi_info vision_spi_master __initdata = {
- .chipselect = vision_spi_chipselects,
- .num_chipselect = ARRAY_SIZE(vision_spi_chipselects),
.use_dma = 1,
};
@@ -295,6 +297,7 @@ static void __init vision_init_machine(void)
ep93xx_register_i2c(vision_i2c_info,
ARRAY_SIZE(vision_i2c_info));
gpiod_add_lookup_table(&vision_spi_mmc_gpio_table);
+ gpiod_add_lookup_table(&vision_spi_cs_gpio_table);
ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
ARRAY_SIZE(vision_spi_board_info));
vision_register_i2s();
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 79fc3940245a..47e39251bad9 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -28,7 +28,6 @@
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/scatterlist.h>
-#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/platform_data/dma-ep93xx.h>
@@ -676,6 +675,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
if (!master)
return -ENOMEM;
+ master->use_gpio_descriptors = true;
master->prepare_transfer_hardware = ep93xx_spi_prepare_hardware;
master->unprepare_transfer_hardware = ep93xx_spi_unprepare_hardware;
master->prepare_message = ep93xx_spi_prepare_message;
@@ -683,31 +683,11 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
master->bus_num = pdev->id;
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16);
-
- master->num_chipselect = info->num_chipselect;
- master->cs_gpios = devm_kcalloc(&master->dev,
- master->num_chipselect, sizeof(int),
- GFP_KERNEL);
- if (!master->cs_gpios) {
- error = -ENOMEM;
- goto fail_release_master;
- }
-
- for (i = 0; i < master->num_chipselect; i++) {
- master->cs_gpios[i] = info->chipselect[i];
-
- if (!gpio_is_valid(master->cs_gpios[i]))
- continue;
-
- error = devm_gpio_request_one(&pdev->dev, master->cs_gpios[i],
- GPIOF_OUT_INIT_HIGH,
- "ep93xx-spi");
- if (error) {
- dev_err(&pdev->dev, "could not request cs gpio %d\n",
- master->cs_gpios[i]);
- goto fail_release_master;
- }
- }
+ /*
+ * The SPI core will count the number of GPIO descriptors to figure
+ * out the number of chip selects available on the platform.
+ */
+ master->num_chipselect = 0;
platform_set_drvdata(pdev, master);
diff --git a/include/linux/platform_data/spi-ep93xx.h b/include/linux/platform_data/spi-ep93xx.h
index eb16c6739ac2..b439f2a896e0 100644
--- a/include/linux/platform_data/spi-ep93xx.h
+++ b/include/linux/platform_data/spi-ep93xx.h
@@ -6,13 +6,9 @@ struct spi_device;
/**
* struct ep93xx_spi_info - EP93xx specific SPI descriptor
- * @chipselect: array of gpio numbers to use as chip selects
- * @num_chipselect: ARRAY_SIZE(chipselect)
* @use_dma: use DMA for the transfers
*/
struct ep93xx_spi_info {
- int *chipselect;
- int num_chipselect;
bool use_dma;
};
generated by cgit (git 2.34.1) at 2024-06-04 10:55:18 +0000