From: rmk+kernel@armlinux.org.uk (Russell King)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/8] net: irda/sa1100_ir: add gpiod APIs for controlling IrDA transceiver
Date: Mon, 29 Aug 2016 12:26:15 +0100 [thread overview]
Message-ID: <E1beKhj-0001Gz-HL@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20160829112540.GF1041@n2100.armlinux.org.uk>
Add GPIO support using the gpiod APIs for controlling the IrDA
transceiver modes (FIR vs SIR), power and range.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
drivers/net/irda/sa1100_ir.c | 58 ++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 56 insertions(+), 2 deletions(-)
diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c
index 7bc9c2955d4b..25c63c9ff33c 100644
--- a/drivers/net/irda/sa1100_ir.c
+++ b/drivers/net/irda/sa1100_ir.c
@@ -23,6 +23,7 @@
#include <linux/types.h>
#include <linux/init.h>
#include <linux/errno.h>
+#include <linux/gpio/consumer.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <linux/rtnetlink.h>
@@ -72,6 +73,10 @@ struct sa1100_irda {
int (*tx_start)(struct sk_buff *, struct net_device *, struct sa1100_irda *);
irqreturn_t (*irq)(struct net_device *, struct sa1100_irda *);
+
+ struct gpio_desc *fsel_gpio;
+ struct gpio_desc *pwr_gpio;
+ struct gpio_desc *md_gpio[2];
};
static int sa1100_irda_set_speed(struct sa1100_irda *, int);
@@ -574,6 +579,8 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed)
if (si->pdata->set_speed)
si->pdata->set_speed(si->dev, speed);
+ if (si->fsel_gpio)
+ gpiod_set_value(si->fsel_gpio, 0);
si->speed = speed;
si->tx_start = sa1100_irda_sir_tx_start;
@@ -600,6 +607,8 @@ static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed)
if (si->pdata->set_speed)
si->pdata->set_speed(si->dev, speed);
+ if (si->fsel_gpio)
+ gpiod_set_value(si->fsel_gpio, 1);
sa1100_irda_rx_alloc(si);
sa1100_irda_rx_dma_start(si);
@@ -629,9 +638,19 @@ static int
__sa1100_irda_set_power(struct sa1100_irda *si, unsigned int state)
{
int ret = 0;
- if (si->pdata->set_power)
+ if (si->pdata->set_power) {
ret = si->pdata->set_power(si->dev, state);
- return ret;
+ } else if (si->pwr_gpio) {
+ gpiod_set_value_cansleep(si->pwr_gpio, state);
+ } else if (si->md_gpio[0] && si->md_gpio[1]) {
+ int vals[2];
+
+ vals[0] = state < 2;
+ vals[1] = state == 1 || state == 2;
+
+ gpiod_set_array_value_cansleep(2, si->md_gpio, vals);
+ }
+ return 0;
}
static inline int
@@ -914,6 +933,21 @@ static const struct net_device_ops sa1100_irda_netdev_ops = {
.ndo_do_ioctl = sa1100_irda_ioctl,
};
+static int sa1100_irda_get_gpio(struct device *dev, struct gpio_desc **descp,
+ const char *name, enum gpiod_flags flags)
+{
+ struct gpio_desc *desc = devm_gpiod_get_optional(dev, name, flags);
+
+ if (IS_ERR(desc)) {
+ int err = PTR_ERR(desc);
+ dev_err(dev, "unable to get %s gpio: %d\n", name, err);
+ return err;
+ }
+
+ *descp = desc;
+ return 0;
+}
+
static int sa1100_irda_probe(struct platform_device *pdev)
{
struct net_device *dev;
@@ -950,6 +984,26 @@ static int sa1100_irda_probe(struct platform_device *pdev)
si->dev = &pdev->dev;
si->pdata = pdev->dev.platform_data;
+ err = sa1100_irda_get_gpio(&pdev->dev, &si->fsel_gpio, "ir-fsel",
+ GPIOD_OUT_LOW);
+ if (err)
+ goto err_mem_5;
+
+ err = sa1100_irda_get_gpio(&pdev->dev, &si->pwr_gpio, "ir-power",
+ GPIOD_OUT_LOW);
+ if (err)
+ goto err_mem_5;
+
+ err = sa1100_irda_get_gpio(&pdev->dev, &si->md_gpio[0], "ir-md0",
+ GPIOD_OUT_HIGH);
+ if (err)
+ goto err_mem_5;
+
+ err = sa1100_irda_get_gpio(&pdev->dev, &si->md_gpio[1], "ir-md1",
+ GPIOD_OUT_LOW);
+ if (err)
+ goto err_mem_5;
+
sg_init_table(&si->dma_rx.sg, 1);
sg_init_table(&si->dma_tx.sg, 1);
--
2.1.0
next prev parent reply other threads:[~2016-08-29 11:26 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-29 10:02 [PATCH 0/3] SA11x0/PXA pcmcia fixes Russell King - ARM Linux
2016-08-29 10:03 ` [PATCH 1/3] pcmcia: sa11xx_base: fix reporting of timing information Russell King
2016-08-29 10:03 ` [PATCH 2/3] pcmcia: sa11xx_base: add units to the " Russell King
2016-08-29 10:03 ` [PATCH 3/3] pcmcia: soc_common: fix SS_STSCHG polarity Russell King
2016-08-29 10:23 ` [RFC PATCH 00/33] SA11x0/PXA GPIO rework (Core + PCMCIA only) Russell King - ARM Linux
2016-08-29 10:24 ` [PATCH 01/33] gpio: sa1100: fix irq probing for ucb1x00 Russell King
2016-09-07 22:25 ` Linus Walleij
2016-08-29 10:24 ` [PATCH 02/33] gpio: sa1100: use sa11x0_gpio_set_wake() Russell King
2016-08-29 10:24 ` [PATCH 03/33] gpio: sa1100: convert to use IO accessors Russell King
2016-08-29 10:24 ` [PATCH 04/33] gpio: sa1100: implement get_direction method Russell King
2016-08-29 10:24 ` [PATCH 05/33] gpio: add generic single-register fixed-direction GPIO driver Russell King
2016-08-29 19:39 ` Robert Jarzmik
2016-08-29 23:12 ` Russell King - ARM Linux
2016-08-30 6:08 ` Alexander Shiyan
2016-08-30 7:41 ` Russell King - ARM Linux
2016-08-30 9:18 ` Russell King - ARM Linux
2016-08-30 16:42 ` Robert Jarzmik
2016-08-30 18:46 ` Russell King - ARM Linux
2016-08-30 21:32 ` Robert Jarzmik
2016-08-31 8:49 ` Russell King - ARM Linux
2016-08-31 10:27 ` Russell King - ARM Linux
2016-09-01 7:19 ` Robert Jarzmik
2016-09-01 9:27 ` Russell King - ARM Linux
2016-09-01 21:58 ` Robert Jarzmik
2016-09-01 23:02 ` Russell King - ARM Linux
2016-09-02 17:50 ` Robert Jarzmik
2016-09-02 18:56 ` Russell King - ARM Linux
2016-09-02 21:21 ` Robert Jarzmik
2016-09-02 23:34 ` Russell King - ARM Linux
2016-09-03 9:15 ` Russell King - ARM Linux
2016-09-03 9:09 ` Russell King - ARM Linux
2016-09-03 10:25 ` Russell King - ARM Linux
2016-09-03 11:31 ` Robert Jarzmik
2016-09-04 19:04 ` Robert Jarzmik
2016-09-04 20:18 ` Russell King - ARM Linux
2016-09-05 9:06 ` Linus Walleij
2016-09-05 12:26 ` Russell King - ARM Linux
2016-09-08 13:21 ` Linus Walleij
2016-09-14 8:50 ` Linus Walleij
2016-08-30 21:25 ` Linus Walleij
2016-08-30 21:42 ` Russell King - ARM Linux
2016-08-30 21:47 ` Linus Walleij
2016-09-02 17:00 ` Russell King - ARM Linux
2016-09-04 20:53 ` Linus Walleij
2016-08-29 10:24 ` [PATCH 06/33] ARM: pxa/lubbock: add GPIO driver for LUB_MISC_WR register Russell King
2016-08-29 19:57 ` Robert Jarzmik
2016-08-29 22:58 ` Russell King - ARM Linux
2016-08-29 10:24 ` [PATCH 07/33] ARM: sa1100/assabet: add BCR/BSR GPIO driver Russell King
2016-08-29 10:24 ` [PATCH 08/33] ARM: sa1100/neponset: add GPIO drivers for control and modem registers Russell King
2016-08-29 10:24 ` [PATCH 09/33] ARM: sa1111: implement a gpio_chip for SA1111 GPIOs Russell King
2016-08-29 10:24 ` [PATCH 10/33] pcmcia: soc_common: switch to using gpio_descs Russell King
2016-09-14 11:29 ` Linus Walleij
2016-09-14 12:10 ` Russell King - ARM Linux
2016-08-29 10:25 ` [PATCH 11/33] pcmcia: soc_common: request legacy detect GPIO with active low Russell King
2016-08-29 10:25 ` [PATCH 12/33] pcmcia: soc_common: add support for reset and bus enable GPIOs Russell King
2016-08-29 10:25 ` [PATCH 13/33] pcmcia: soc_common: restore previous socket state on error Russell King
2016-08-29 10:25 ` [PATCH 14/33] pcmcia: soc_common: add CF socket state helper Russell King
2016-08-29 10:25 ` [PATCH 15/33] pcmcia: soc_common: add support for Vcc and Vpp regulators Russell King
2016-08-29 10:25 ` [PATCH 16/33] pcmcia: soc_common: switch to a per-socket cpufreq notifier Russell King
2016-08-29 10:25 ` [PATCH 17/33] pcmcia: soc_common: constify pcmcia_low_level ops pointer Russell King
2016-08-29 10:25 ` [PATCH 18/33] pcmcia: sa1100: provide generic CF support Russell King
2016-09-14 8:52 ` Linus Walleij
2016-09-14 9:06 ` Russell King - ARM Linux
2016-09-14 11:13 ` Linus Walleij
2016-08-29 10:25 ` [PATCH 19/33] pcmcia: sa1111: add driver-data pointer Russell King
2016-08-29 10:25 ` [PATCH 20/33] pcmcia: add MAX1600 driver Russell King
2016-08-29 10:25 ` [PATCH 21/33] ARM: sa1100: provide infrastructure to support generic CF sockets Russell King
2016-08-29 10:25 ` [PATCH 22/33] ARM: sa1100/assabet: convert to " Russell King
2016-08-29 10:26 ` [PATCH 23/33] ARM: sa1100/cerf: " Russell King
2016-08-29 10:26 ` [PATCH 24/33] ARM: sa1100/h3xxx: switch h3xxx PCMCIA to use gpiod APIs Russell King
2016-08-29 10:26 ` [PATCH 25/33] ARM: sa1100/nanoengine: convert to generic CF sockets Russell King
2016-08-29 10:26 ` [PATCH 26/33] ARM: sa1100/shannon: switch shannon PCMCIA to use gpiod APIs Russell King
2016-08-29 10:26 ` [PATCH 27/33] ARM: sa1100/simpad: switch simpad CF " Russell King
2016-08-29 10:26 ` [PATCH 28/33] ARM: sa1100/neponset: add GPIOs for PCMCIA Russell King
2016-08-29 10:26 ` [PATCH 29/33] pcmcia: sa1111/neponset: convert to use MAX1600 power driver Russell King
2016-08-29 10:26 ` [PATCH 30/33] ARM: sa1100/jornada720: switch jornada720 PCMCIA to gpiod APIs Russell King
2016-08-29 10:26 ` [PATCH 31/33] ARM: pxa/lubbock: convert PCMCIA to use MAX1600 driver Russell King
2016-08-29 10:26 ` [PATCH 32/33] pcmcia: sa1100*: remove redundant bvd1/bvd2 setting Russell King
2016-08-29 10:26 ` [PATCH 33/33] ARM: sa1111: remove legacy GPIO interfaces Russell King
2016-08-29 11:01 ` [PATCH 0/3] SA11x0 gpio keys/leds Russell King - ARM Linux
2016-08-29 11:03 ` [PATCH 1/3] ARM: sa1100/assabet: add gpio keys support for right-hand two buttons Russell King
2016-08-29 11:03 ` [PATCH 2/3] ARM: sa1100/assabet: switch to using gpio leds Russell King
2016-08-29 11:03 ` [PATCH 3/3] ARM: sa1100/cerf: switch to using gpio_led_register_device() Russell King
2016-08-29 11:25 ` [PATCH 0/8] SA11x0 DMA engine/IrDA updates Russell King - ARM Linux
2016-08-29 11:26 ` [PATCH 1/8] dmaengine: sa11x0: add DMA filters Russell King
2016-08-30 15:57 ` Vinod Koul
2016-08-29 11:26 ` [PATCH 2/8] net: irda/sa1100_ir: convert to dma_request_slave_channel() Russell King
2016-08-29 11:26 ` Russell King [this message]
2016-08-29 11:26 ` [PATCH 4/8] dmaengine: sa11x0: unexport sa11x0_dma_filter_fn and clean up Russell King
2016-08-30 15:58 ` Vinod Koul
2016-08-29 11:26 ` [PATCH 5/8] ARM: sa1100/assabet: switch assabet IrDA to use gpiod APIs Russell King
2016-08-29 11:26 ` [PATCH 6/8] ARM: sa1100/collie: switch collie " Russell King
2016-08-29 11:26 ` [PATCH 7/8] ARM: sa1100/h3xxx: switch h3xxx " Russell King
2016-08-29 11:26 ` [PATCH 8/8] net: irda/sa1100_ir: remove sa11x0 irda platform data Russell King
2016-08-29 12:05 ` [PATCH 0/6] SA11x0 serial updates Russell King - ARM Linux
2016-08-29 12:05 ` [PATCH 1/6] serial: sa1100: add support for mctrl gpios Russell King
2016-08-31 13:25 ` Greg Kroah-Hartman
2016-08-29 12:05 ` [PATCH 2/6] ARM: sa1100/assabet: convert serial to gpiod APIs Russell King
2016-08-29 12:06 ` [PATCH 3/6] ARM: sa1100/h3xxx: " Russell King
2016-08-29 12:06 ` [PATCH 4/6] ARM: sa1100/badge4: remove commented out modem control initialisers Russell King
2016-08-29 12:06 ` [PATCH 5/6] ARM: sa1100/hackkit: remove empty serial mctrl functions Russell King
2016-08-29 12:06 ` [PATCH 6/6] ARM: sa1100/neponset: convert serial to use gpiod APIs Russell King
2016-08-30 10:51 ` [PATCH 0/4] SA11x0 Clocks and removal of Neponset SMC91x hack Russell King - ARM Linux
2016-08-30 10:52 ` [PATCH 1/4] ARM: sa1100: convert to common clock framework Russell King
2016-08-30 10:52 ` [PATCH 2/4] net: smc91x: add external clock support Russell King
2016-08-30 10:52 ` [PATCH 3/4] ARM: sa1100/neponset: add ethernet oscillator Russell King
2016-08-30 10:52 ` [PATCH 4/4] net: smc91x: remove neponset specific oscillator hack Russell King
2016-08-30 10:59 ` [PATCH 0/8] SA11x0/PXA remainder & cleanups Russell King - ARM Linux
2016-08-30 11:00 ` [PATCH 1/8] mfd: ucb1x00: allow IRQ probing to work with IRQs > 32 Russell King
2016-08-30 12:00 ` Lee Jones
2016-08-30 11:00 ` [PATCH 2/8] ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view Russell King
2016-08-30 11:00 ` [PATCH 3/8] ARM: sa1100/cerf: remove redundant definitions Russell King
2016-08-30 11:00 ` [PATCH 4/8] ARM: sa1100/cerf: move cerf header file Russell King
2016-08-30 11:00 ` [PATCH 5/8] ARM: sa1100/nanoengine: remove redundant definitions Russell King
2016-08-30 11:00 ` [PATCH 6/8] ARM: sa1100/nanoengine: move nanoengine header file Russell King
2016-08-30 11:00 ` [PATCH 7/8] ARM: sa1100/neponset: remove neponset_ncr_* GPIO interfaces and header Russell King
2016-08-30 11:01 ` [PATCH 8/8] ARM: sa1100: remove SA-1101 header file Russell King
2016-08-30 15:31 ` [PATCH 0/4] SA11x0 Clocks and removal of Neponset SMC91x hack Nicolas Pitre
2016-09-01 23:32 ` David Miller
2016-09-02 18:59 ` Russell King - ARM Linux
2016-09-05 9:09 ` [PATCH 0/6] SA11x0 serial updates Linus Walleij
2016-09-05 12:28 ` Russell King - ARM Linux
2016-09-07 22:28 ` Linus Walleij
2016-09-08 13:23 ` Linus Walleij
2016-08-30 21:31 ` [RFC PATCH 00/33] SA11x0/PXA GPIO rework (Core + PCMCIA only) Linus Walleij
2016-09-01 15:34 ` Russell King - ARM Linux
2016-09-06 14:46 ` [PATCH 0/3] SA11x0/PXA pcmcia fixes Russell King - ARM Linux
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