From: petr.cvek@tul•cz (Petr Cvek)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 05/21] ARM: pxa: magician: Add support for ADS7846 touchscreen
Date: Mon, 17 Aug 2015 23:58:55 +0200 [thread overview]
Message-ID: <55D2591F.10509@tul.cz> (raw)
In-Reply-To: <cover.1439843482.git.petr.cvek@tul.cz>
Add support for ADS7846 touchscreen.
Signed-off-by: Petr Cvek <petr.cvek@tul•cz>
---
arch/arm/mach-pxa/magician.c | 86 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index bc206f8..fc1c035 100644
--- a/arch/arm/mach-pxa/magician.c
+++ b/arch/arm/mach-pxa/magician.c
@@ -68,6 +68,7 @@
#include <linux/pwm_backlight.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/gpio-regulator.h>
+#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/i2c/pxa-i2c.h>
@@ -84,6 +85,10 @@
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/pxa2xx_spi.h>
+#include <linux/spi/ads7846.h>
+
#include "devices.h"
#include "generic.h"
@@ -766,6 +771,37 @@ static struct platform_device bq24022 = {
};
/*
+ * fixed regulator for ads7846
+ */
+
+static struct regulator_consumer_supply ads7846_supply =
+ REGULATOR_SUPPLY("vcc", "spi2.0");
+
+static struct regulator_init_data vads7846_regulator = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &ads7846_supply,
+};
+
+static struct fixed_voltage_config vads7846 = {
+ .supply_name = "vads7846",
+ .microvolts = 3300000, /* probably */
+ .gpio = -EINVAL,
+ .startup_delay = 0,
+ .init_data = &vads7846_regulator,
+};
+
+static struct platform_device vads7846_device = {
+ .name = "reg-fixed-voltage",
+ .id = 1,
+ .dev = {
+ .platform_data = &vads7846,
+ },
+};
+
+/*
* MMC/SD
*/
@@ -841,6 +877,51 @@ static struct i2c_pxa_platform_data i2c_info = {
};
/*
+ * Touchscreen
+ */
+
+static struct ads7846_platform_data ads7846_pdata = {
+ .model = 7846,
+ .x_min = 0,
+ .y_min = 0,
+ .x_max = 4096,
+ .y_max = 4096,
+ .x_plate_ohms = 320, /* measured */
+ .y_plate_ohms = 500,
+ .pressure_max = 255, /* up to 12bit sampling */
+ .debounce_max = 10,
+ .debounce_tol = 3,
+ .debounce_rep = 1,
+ .gpio_pendown = GPIO115_MAGICIAN_nPEN_IRQ,
+ .keep_vref_on = 1, /* FIXME, external Vref? */
+ .vref_delay_usecs = 100,
+ /* .wait_for_sync, GPIO77_LCD_BIAS low noise measure, latency! */
+};
+
+struct pxa2xx_spi_chip tsc2046_chip_info = {
+ .tx_threshold = 1,
+ .rx_threshold = 2,
+ .timeout = 64,
+ .gpio_cs = -1,
+};
+
+static struct pxa2xx_spi_master magician_spi_info = {
+ .num_chipselect = 1,
+/* .enable_dma = 1, */ /* FIXME probably unnecessary */
+};
+
+static struct spi_board_info ads7846_spi_board_info[] __initdata = {
+ {
+ .modalias = "ads7846",
+ .bus_num = 2,
+ .max_speed_hz = 1857143,
+ .platform_data = &ads7846_pdata,
+ .controller_data = &tsc2046_chip_info,
+ .irq = PXA_GPIO_TO_IRQ(GPIO115_MAGICIAN_nPEN_IRQ),
+ },
+};
+
+/*
* Platform devices
*/
@@ -849,6 +930,7 @@ static struct platform_device *devices[] __initdata = {
&egpio,
&pwm_backlight,
&pasic3,
+ &vads7846_device,
&bq24022,
&gpio_vbus,
&power_supply,
@@ -915,6 +997,10 @@ static void __init magician_init(void)
lcd_select ? &samsung_info : &toppoly_info);
} else
pr_err("LCD detection: CPLD mapping failed\n");
+
+ pxa2xx_set_spi_info(2, &magician_spi_info);
+ spi_register_board_info(ARRAY_AND_SIZE(ads7846_spi_board_info));
+
}
MACHINE_START(MAGICIAN, "HTC Magician")
--
1.7.12.1
next prev parent reply other threads:[~2015-08-17 21:58 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1439843482.git.petr.cvek@tul.cz>
2015-08-17 21:56 ` [PATCH v2 01/21] ARM: pxa: magician: Fix Kconfig for magician to always include htc-egpio Petr Cvek
2015-08-18 18:31 ` Robert Jarzmik
2015-08-18 20:02 ` Petr Cvek
2015-08-19 7:29 ` Philipp Zabel
2015-08-24 3:39 ` Petr Cvek
2015-08-17 21:56 ` [PATCH v2 02/21] ARM: pxa: magician: Fix indentation and whitespaces Petr Cvek
2015-08-18 18:32 ` Robert Jarzmik
2015-08-19 7:42 ` Philipp Zabel
2015-08-17 21:57 ` [PATCH v2 03/21] ARM: pxa: magician: Fix comments, debug functions and print strings Petr Cvek
2015-08-18 18:39 ` Robert Jarzmik
2015-08-18 23:09 ` Petr Cvek
2015-08-19 7:57 ` Philipp Zabel
2015-08-17 21:58 ` [PATCH v2 04/21] ARM: pxa: magician: Add, fix and init (new) GPIOs Petr Cvek
2015-08-18 19:01 ` Robert Jarzmik
2015-08-18 22:46 ` Petr Cvek
2015-08-17 21:58 ` Petr Cvek [this message]
2015-08-19 18:41 ` [PATCH v2 05/21] ARM: pxa: magician: Add support for ADS7846 touchscreen Robert Jarzmik
2015-08-17 21:59 ` [PATCH v2 06/21] ARM: pxa: magician: Add normal and power I2C definition Petr Cvek
2015-08-19 8:02 ` Philipp Zabel
2015-08-19 18:41 ` Robert Jarzmik
2015-08-17 21:59 ` [PATCH v2 07/21] ARM: pxa: magician: Fix IrDA pdata and redundant GPIO request Petr Cvek
2015-08-19 18:41 ` Robert Jarzmik
2015-08-17 22:00 ` [PATCH v2 08/21] ARM: pxa: magician: Add StrataFlash Vpp GPIO and alternative driver Petr Cvek
2015-08-17 22:01 ` [PATCH v2 09/21] ARM: pxa: magician: Add OV9640 camera support Petr Cvek
2015-08-20 19:48 ` Robert Jarzmik
2015-08-20 20:26 ` Arnd Bergmann
2015-08-20 22:39 ` Petr Cvek
2015-08-21 13:45 ` Arnd Bergmann
2015-08-21 17:36 ` Robert Jarzmik
2015-08-21 22:09 ` Petr Cvek
2015-08-22 12:41 ` Robert Jarzmik
2015-08-24 6:53 ` Lee Jones
2015-08-17 22:01 ` [PATCH v2 10/21] ARM: pxa: magician: Add UDA1380 sound support Petr Cvek
2015-08-20 19:51 ` Robert Jarzmik
2015-08-20 23:01 ` Petr Cvek
2015-08-28 8:48 ` Robert Jarzmik
2015-08-17 22:01 ` [PATCH v2 11/21] ARM: pxa: magician: Add MAX1586 Vcore regulator support Petr Cvek
2015-08-20 19:32 ` Robert Jarzmik
2015-08-20 22:33 ` Petr Cvek
2015-08-28 8:49 ` Robert Jarzmik
2015-08-17 22:02 ` [PATCH v2 12/21] ARM: pxa: magician: Add PXA27x UDC support Petr Cvek
2015-08-20 17:23 ` Robert Jarzmik
2015-08-20 22:21 ` Petr Cvek
2015-08-28 9:58 ` Robert Jarzmik
2015-08-17 22:03 ` [PATCH v2 13/21] ARM: pxa: magician: Fix charging source and add NiCd backup charging Petr Cvek
2015-08-17 22:18 ` Petr Cvek
2015-08-17 22:03 ` [PATCH v2 14/21] ARM: pxa: magician: Fix PXA USB OHCI port enable flags Petr Cvek
2015-08-17 22:03 ` [PATCH v2 15/21] ARM: pxa: magician: Fix PWM backlight regulator Petr Cvek
2015-08-20 19:58 ` Robert Jarzmik
2015-08-17 22:04 ` [PATCH v2 16/21] ARM: pxa: magician: Add support for alternative LCD backlight Petr Cvek
2015-08-20 20:01 ` Robert Jarzmik
2015-08-23 20:55 ` Petr Cvek
2015-08-24 8:25 ` Robert Jarzmik
2015-08-17 22:04 ` [PATCH v2 17/21] ARM: pxa: magician: Remove (temporarily) pasic3 LED support Petr Cvek
2015-08-22 16:25 ` Robert Jarzmik
2015-08-17 22:05 ` [PATCH v2 18/21] mfd: htc-pasic3: Prepare driver for leds-pasic3 Petr Cvek
2015-08-18 6:52 ` Lee Jones
2015-08-18 21:01 ` Petr Cvek
2015-08-19 6:58 ` Lee Jones
2015-08-17 22:06 ` [PATCH v2 19/21] leds: leds-pasic3: Add support for PASIC3 LED controller Petr Cvek
2015-08-17 22:14 ` Petr Cvek
2015-08-18 10:27 ` Jacek Anaszewski
2015-08-18 21:48 ` Petr Cvek
2015-08-19 8:09 ` Philipp Zabel
2015-08-19 8:49 ` Jacek Anaszewski
2015-08-17 22:06 ` [PATCH v2 20/21] ARM: pxa: magician: Re-add pdata for new leds-pasic3 driver Petr Cvek
2015-08-17 22:07 ` [PATCH v2 21/21] ARM: pxa: magician: Move platform_add_devices() to the end of magician_init() Petr Cvek
2015-08-22 16:27 ` Robert Jarzmik
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