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-rw-r--r--drivers/i2c/busses/i2c-pxa.c29
-rw-r--r--drivers/pcmcia/pxa2xx_cm_x270.c15
-rw-r--r--drivers/pcmcia/pxa2xx_mainstone.c13
-rw-r--r--drivers/pcmcia/pxa2xx_sharpsl.c12
-rw-r--r--drivers/usb/gadget/pxa27x_udc.c5
-rw-r--r--drivers/usb/gadget/pxa27x_udc.h8
-rw-r--r--drivers/usb/gadget/pxa2xx_udc.c10
-rw-r--r--drivers/usb/host/ohci-pxa27x.c3
-rw-r--r--drivers/video/backlight/Kconfig7
-rw-r--r--drivers/video/backlight/Makefile1
-rw-r--r--drivers/video/backlight/pwm_bl.c185
11 files changed, 233 insertions, 55 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index eb26d2aca8b4..dde6ce963a19 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -944,32 +944,6 @@ static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
.functionality = i2c_pxa_functionality,
};
-static void i2c_pxa_enable(struct platform_device *dev)
-{
- if (cpu_is_pxa27x()) {
- switch (dev->id) {
- case 0:
- pxa_gpio_mode(GPIO117_I2CSCL_MD);
- pxa_gpio_mode(GPIO118_I2CSDA_MD);
- break;
- case 1:
- local_irq_disable();
- PCFR |= PCFR_PI2CEN;
- local_irq_enable();
- break;
- }
- }
-}
-
-static void i2c_pxa_disable(struct platform_device *dev)
-{
- if (cpu_is_pxa27x() && dev->id == 1) {
- local_irq_disable();
- PCFR &= ~PCFR_PI2CEN;
- local_irq_enable();
- }
-}
-
#define res_len(r) ((r)->end - (r)->start + 1)
static int i2c_pxa_probe(struct platform_device *dev)
{
@@ -1035,7 +1009,6 @@ static int i2c_pxa_probe(struct platform_device *dev)
#endif
clk_enable(i2c->clk);
- i2c_pxa_enable(dev);
if (plat) {
i2c->adap.class = plat->class;
@@ -1079,7 +1052,6 @@ eadapt:
free_irq(irq, i2c);
ereqirq:
clk_disable(i2c->clk);
- i2c_pxa_disable(dev);
iounmap(i2c->reg_base);
eremap:
clk_put(i2c->clk);
@@ -1102,7 +1074,6 @@ static int __exit i2c_pxa_remove(struct platform_device *dev)
clk_disable(i2c->clk);
clk_put(i2c->clk);
- i2c_pxa_disable(dev);
iounmap(i2c->reg_base);
release_mem_region(i2c->iobase, i2c->iosize);
diff --git a/drivers/pcmcia/pxa2xx_cm_x270.c b/drivers/pcmcia/pxa2xx_cm_x270.c
index e7ab060ff118..f123fce65f2e 100644
--- a/drivers/pcmcia/pxa2xx_cm_x270.c
+++ b/drivers/pcmcia/pxa2xx_cm_x270.c
@@ -18,6 +18,7 @@
#include <pcmcia/ss.h>
#include <asm/hardware.h>
+#include <asm/mach-types.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-gpio.h>
@@ -130,7 +131,7 @@ static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
}
-static struct pcmcia_low_level cmx270_pcmcia_ops = {
+static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
.owner = THIS_MODULE,
.hw_init = cmx270_pcmcia_hw_init,
.hw_shutdown = cmx270_pcmcia_shutdown,
@@ -147,15 +148,21 @@ static int __init cmx270_pcmcia_init(void)
{
int ret;
+ if (!machine_is_armcore())
+ return -ENODEV;
+
cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
if (!cmx270_pcmcia_device)
return -ENOMEM;
- cmx270_pcmcia_device->dev.platform_data = &cmx270_pcmcia_ops;
+ ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
+ sizeof(cmx270_pcmcia_ops));
- printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
- ret = platform_device_add(cmx270_pcmcia_device);
+ if (ret == 0) {
+ printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
+ ret = platform_device_add(cmx270_pcmcia_device);
+ }
if (ret)
platform_device_put(cmx270_pcmcia_device);
diff --git a/drivers/pcmcia/pxa2xx_mainstone.c b/drivers/pcmcia/pxa2xx_mainstone.c
index 145b85e0f02c..92d1cc33808c 100644
--- a/drivers/pcmcia/pxa2xx_mainstone.c
+++ b/drivers/pcmcia/pxa2xx_mainstone.c
@@ -22,6 +22,7 @@
#include <pcmcia/ss.h>
#include <asm/hardware.h>
+#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/arch/pxa-regs.h>
@@ -136,7 +137,7 @@ static void mst_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
}
-static struct pcmcia_low_level mst_pcmcia_ops = {
+static struct pcmcia_low_level mst_pcmcia_ops __initdata = {
.owner = THIS_MODULE,
.hw_init = mst_pcmcia_hw_init,
.hw_shutdown = mst_pcmcia_hw_shutdown,
@@ -153,13 +154,17 @@ static int __init mst_pcmcia_init(void)
{
int ret;
+ if (!machine_is_mainstone())
+ return -ENODEV;
+
mst_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
if (!mst_pcmcia_device)
return -ENOMEM;
- mst_pcmcia_device->dev.platform_data = &mst_pcmcia_ops;
-
- ret = platform_device_add(mst_pcmcia_device);
+ ret = platform_device_add_data(mst_pcmcia_device, &mst_pcmcia_ops,
+ sizeof(mst_pcmcia_ops));
+ if (ret == 0)
+ ret = platform_device_add(mst_pcmcia_device);
if (ret)
platform_device_put(mst_pcmcia_device);
diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c
index d5c33bd78d68..d71f93d45833 100644
--- a/drivers/pcmcia/pxa2xx_sharpsl.c
+++ b/drivers/pcmcia/pxa2xx_sharpsl.c
@@ -222,7 +222,7 @@ static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
sharpsl_pcmcia_init_reset(skt);
}
-static struct pcmcia_low_level sharpsl_pcmcia_ops = {
+static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
.owner = THIS_MODULE,
.hw_init = sharpsl_pcmcia_hw_init,
.hw_shutdown = sharpsl_pcmcia_hw_shutdown,
@@ -261,10 +261,12 @@ static int __init sharpsl_pcmcia_init(void)
if (!sharpsl_pcmcia_device)
return -ENOMEM;
- sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
- sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
-
- ret = platform_device_add(sharpsl_pcmcia_device);
+ ret = platform_device_add_data(sharpsl_pcmcia_device,
+ &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
+ if (ret == 0) {
+ sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
+ ret = platform_device_add(sharpsl_pcmcia_device);
+ }
if (ret)
platform_device_put(sharpsl_pcmcia_device);
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 499b7a23f351..40d6b580f152 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -38,7 +38,7 @@
#include <linux/usb.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-
+#include <asm/arch/pxa2xx-regs.h> /* FIXME: for PSSR */
#include <asm/arch/udc.h>
#include "pxa27x_udc.h"
@@ -2359,7 +2359,8 @@ static int pxa_udc_resume(struct platform_device *_dev)
* Software must configure the USB OTG pad, UDC, and UHC
* to the state they were in before entering sleep mode.
*/
- PSSR |= PSSR_OTGPH;
+ if (cpu_is_pxa27x())
+ PSSR |= PSSR_OTGPH;
return 0;
}
diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h
index 97453db924ff..1d1b7936ee11 100644
--- a/drivers/usb/gadget/pxa27x_udc.h
+++ b/drivers/usb/gadget/pxa27x_udc.h
@@ -484,12 +484,4 @@ static inline struct pxa_udc *to_gadget_udc(struct usb_gadget *gadget)
#define ep_warn(ep, fmt, arg...) \
dev_warn(ep->dev->dev, "%s:%s:" fmt, EPNAME(ep), __func__, ## arg)
-/*
- * Cannot include pxa-regs.h, as register names are similar.
- * So PSSR is redefined here. This should be removed once UDC registers will
- * be gone from pxa-regs.h.
- */
-#define PSSR __REG(0x40F00004) /* Power Manager Sleep Status */
-#define PSSR_OTGPH (1 << 6) /* OTG Peripheral Hold */
-
#endif /* __LINUX_USB_GADGET_PXA27X_H */
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index 08f699b1fc57..63db96adc0b0 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -46,19 +46,25 @@
#include <linux/err.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
+#include <linux/io.h>
#include <asm/byteorder.h>
#include <asm/dma.h>
#include <asm/gpio.h>
-#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach-types.h>
#include <asm/unaligned.h>
-#include <asm/hardware.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
+/*
+ * This driver is PXA25x only. Grab the right register definitions.
+ */
+#ifdef CONFIG_ARCH_PXA
+#include <asm/arch/pxa25x-udc.h>
+#endif
+
#include <asm/mach/udc_pxa2xx.h>
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 70b0d4b459e7..08b27d6bbd43 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -27,6 +27,7 @@
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h> /* FIXME: for PSSR */
#include <asm/arch/ohci.h>
#define PXA_UHC_MAX_PORTNUM 3
@@ -104,7 +105,7 @@ static int pxa27x_start_hc(struct device *dev)
UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);
/* Clear any OTG Pin Hold */
- if (PSSR & PSSR_OTGPH)
+ if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH))
PSSR |= PSSR_OTGPH;
return 0;
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index dcd8073c2369..30bf7f2f1635 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -112,3 +112,10 @@ config BACKLIGHT_CARILLO_RANCH
help
If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
backlight driver.
+
+config BACKLIGHT_PWM
+ tristate "Generic PWM based Backlight Driver"
+ depends on BACKLIGHT_CLASS_DEVICE && HAVE_PWM
+ help
+ If you have a LCD backlight adjustable by PWM, say Y to enable
+ this driver.
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 33f6c7cecc73..b51a7cd12500 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
+obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
new file mode 100644
index 000000000000..6338d0e2fe07
--- /dev/null
+++ b/drivers/video/backlight/pwm_bl.c
@@ -0,0 +1,185 @@
+/*
+ * linux/drivers/video/backlight/pwm_bl.c
+ *
+ * simple PWM based backlight control, board code has to setup
+ * 1) pin configuration so PWM waveforms can output
+ * 2) platform_data casts to the PWM id (0/1/2/3 on PXA)
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/pwm.h>
+#include <linux/pwm_backlight.h>
+
+struct pwm_bl_data {
+ struct pwm_device *pwm;
+ unsigned int period;
+ int (*notify)(int brightness);
+};
+
+static int pwm_backlight_update_status(struct backlight_device *bl)
+{
+ struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+ int brightness = bl->props.brightness;
+ int max = bl->props.max_brightness;
+
+ if (bl->props.power != FB_BLANK_UNBLANK)
+ brightness = 0;
+
+ if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+ brightness = 0;
+
+ if (pb->notify)
+ brightness = pb->notify(brightness);
+
+ if (brightness == 0) {
+ pwm_config(pb->pwm, 0, pb->period);
+ pwm_disable(pb->pwm);
+ } else {
+ pwm_config(pb->pwm, brightness * pb->period / max, pb->period);
+ pwm_enable(pb->pwm);
+ }
+ return 0;
+}
+
+static int pwm_backlight_get_brightness(struct backlight_device *bl)
+{
+ return bl->props.brightness;
+}
+
+static struct backlight_ops pwm_backlight_ops = {
+ .update_status = pwm_backlight_update_status,
+ .get_brightness = pwm_backlight_get_brightness,
+};
+
+static int pwm_backlight_probe(struct platform_device *pdev)
+{
+ struct platform_pwm_backlight_data *data = pdev->dev.platform_data;
+ struct backlight_device *bl;
+ struct pwm_bl_data *pb;
+ int ret;
+
+ if (!data)
+ return -EINVAL;
+
+ if (data->init) {
+ ret = data->init(&pdev->dev);
+ if (ret < 0)
+ return ret;
+ }
+
+ pb = kzalloc(sizeof(*pb), GFP_KERNEL);
+ if (!pb) {
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ pb->period = data->pwm_period_ns;
+ pb->notify = data->notify;
+
+ pb->pwm = pwm_request(data->pwm_id, "backlight");
+ if (IS_ERR(pb->pwm)) {
+ dev_err(&pdev->dev, "unable to request PWM for backlight\n");
+ ret = PTR_ERR(pb->pwm);
+ goto err_pwm;
+ }
+
+ bl = backlight_device_register(pdev->name, &pdev->dev,
+ pb, &pwm_backlight_ops);
+ if (IS_ERR(bl)) {
+ dev_err(&pdev->dev, "failed to register backlight\n");
+ ret = PTR_ERR(bl);
+ goto err_bl;
+ }
+
+ bl->props.max_brightness = data->max_brightness;
+ bl->props.brightness = data->dft_brightness;
+ backlight_update_status(bl);
+
+ platform_set_drvdata(pdev, bl);
+ return 0;
+
+err_bl:
+ pwm_free(pb->pwm);
+err_pwm:
+ kfree(pb);
+err_alloc:
+ if (data->exit)
+ data->exit(&pdev->dev);
+ return ret;
+}
+
+static int pwm_backlight_remove(struct platform_device *pdev)
+{
+ struct platform_pwm_backlight_data *data = pdev->dev.platform_data;
+ struct backlight_device *bl = platform_get_drvdata(pdev);
+ struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+
+ backlight_device_unregister(bl);
+ pwm_config(pb->pwm, 0, pb->period);
+ pwm_disable(pb->pwm);
+ pwm_free(pb->pwm);
+ kfree(pb);
+ if (data->exit)
+ data->exit(&pdev->dev);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int pwm_backlight_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct backlight_device *bl = platform_get_drvdata(pdev);
+ struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+
+ pwm_config(pb->pwm, 0, pb->period);
+ pwm_disable(pb->pwm);
+ return 0;
+}
+
+static int pwm_backlight_resume(struct platform_device *pdev)
+{
+ struct backlight_device *bl = platform_get_drvdata(pdev);
+
+ backlight_update_status(bl);
+ return 0;
+}
+#else
+#define pwm_backlight_suspend NULL
+#define pwm_backlight_resume NULL
+#endif
+
+static struct platform_driver pwm_backlight_driver = {
+ .driver = {
+ .name = "pwm-backlight",
+ .owner = THIS_MODULE,
+ },
+ .probe = pwm_backlight_probe,
+ .remove = pwm_backlight_remove,
+ .suspend = pwm_backlight_suspend,
+ .resume = pwm_backlight_resume,
+};
+
+static int __init pwm_backlight_init(void)
+{
+ return platform_driver_register(&pwm_backlight_driver);
+}
+module_init(pwm_backlight_init);
+
+static void __exit pwm_backlight_exit(void)
+{
+ platform_driver_unregister(&pwm_backlight_driver);
+}
+module_exit(pwm_backlight_exit);
+
+MODULE_DESCRIPTION("PWM based Backlight Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 02:25:30 +0000