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Date: Sun, 11 Apr 2010 12:17:45 +0200
From: Bruno Prémont <bonbons@...ux-vserver.org>
To: Jiri Kosina <jkosina@...e.cz>
Cc: Randy Dunlap <randy.dunlap@...cle.com>,
linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>, rvinyard@...nmsu.edu
Subject: Re: [PATCH mmotm] hid-picolcd: depends on LCD_CLASS_DEVICE
HID_PICOLCD should depend on LCD_CLASS_DEVICE, otherwise the
build fails when HID_PICOLCD=y and LCD_CLASS_DEVICE=m:
hid-picolcd.c:(.text+0x84523f): undefined reference to `lcd_device_unregister'
hid-picolcd.c:(.text+0x8478ab): undefined reference to `lcd_device_register'
hid-picolcd.c:(.text+0x84c15f): undefined reference to `lcd_device_unregister'
Same applies to FB, BACKLIGHT_CLASS_DEVICE and LEDS_CLASS.
Add suboptions for those features to handle the deps on kbuild side
and just check HID_PICOLCD_* in the code.
Reported-by: Randy Dunlap <randy.dunlap@...cle.com>
Signed-off-by: Bruno Prémont <bonbons@...ux-vserver.org>
---
On Thu, 08 April 2010 Jiri Kosina <jkosina@...e.cz> wrote:
> > +config HID_PICOLCD_FB
> > + bool "Framebuffer support"
> > + default !EMBEDDED
> > + depends on HID_PICOLCD
> > + depends on HID_PICOLCD=FB || FB=y
> > + select FB_DEFERRED_IO
> > + select FB_SYS_FILLRECT
> > + select FB_SYS_COPYAREA
> > + select FB_SYS_IMAGEBLIT
> > + select FB_SYS_FOPS
>
> Could we perhaps also make the sub-choices for individual features
> availabel only if !EMBEDDED as well?
Here is an updated patch to make the sub-choices visible only in
EMBEDDED case.
Thanks,
Bruno
drivers/hid/Kconfig | 53 +++++++++++++++++++++++++++++++++++++-------
drivers/hid/hid-picolcd.c | 40 +++++++++++++++++-----------------
2 files changed, 64 insertions(+), 29 deletions(-)
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index a2ecd83..621c52c 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -265,11 +265,6 @@ config HID_PETALYNX
config HID_PICOLCD
tristate "PicoLCD (graphic version)"
depends on USB_HID
- select FB_DEFERRED_IO if FB
- select FB_SYS_FILLRECT if FB
- select FB_SYS_COPYAREA if FB
- select FB_SYS_IMAGEBLIT if FB
- select FB_SYS_FOPS if FB
---help---
This provides support for Minibox PicoLCD devices, currently
only the graphical ones are supported.
@@ -277,14 +272,54 @@ config HID_PICOLCD
This includes support for the following device features:
- Keypad
- Switching between Firmware and Flash mode
- - Framebuffer for monochrome 256x64 display
- - Backlight control (needs CONFIG_BACKLIGHT_CLASS_DEVICE)
- - Contrast control (needs CONFIG_LCD_CLASS_DEVICE)
- - General purpose outputs (needs CONFIG_LEDS_CLASS)
- EEProm / Flash access (via debugfs)
+ Features selectively enabled:
+ - Framebuffer for monochrome 256x64 display
+ - Backlight control
+ - Contrast control
+ - General purpose outputs
Features that are not (yet) supported:
- IR
+config HID_PICOLCD_FB
+ bool "Framebuffer support" if EMBEDDED
+ default !EMBEDDED
+ depends on HID_PICOLCD
+ depends on HID_PICOLCD=FB || FB=y
+ select FB_DEFERRED_IO
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ ---help---
+ Provide access to PicoLCD's 256x64 monochrome display via a
+ frambuffer device.
+
+config HID_PICOLCD_BACKLIGHT
+ bool "Backlight control" if EMBEDDED
+ default !EMBEDDED
+ depends on HID_PICOLCD
+ depends on HID_PICOLCD=BACKLIGHT_CLASS_DEVICE || BACKLIGHT_CLASS_DEVICE=y
+ ---help---
+ Provide access to PicoLCD's backlight control via backlight
+ class.
+
+config HID_PICOLCD_LCD
+ bool "Contrast control" if EMBEDDED
+ default !EMBEDDED
+ depends on HID_PICOLCD
+ depends on HID_PICOLCD=LCD_CLASS_DEVICE || LCD_CLASS_DEVICE=y
+ ---help---
+ Provide access to PicoLCD's LCD contrast via lcd class.
+
+config HID_PICOLCD_LEDS
+ bool "GPO via leds class" if EMBEDDED
+ default !EMBEDDED
+ depends on HID_PICOLCD
+ depends on HID_PICOLCD=LEDS_CLASS || LEDS_CLASS=y
+ ---help---
+ Provide access to PicoLCD's GPO pins via leds class.
+
config HID_QUANTA
tristate "Quanta Optical Touch"
depends on USB_HID
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c
index 0eacc6b..0fbc7d3 100644
--- a/drivers/hid/hid-picolcd.c
+++ b/drivers/hid/hid-picolcd.c
@@ -77,7 +77,7 @@
#define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */
#define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Framebuffer
*
* The PicoLCD use a Topway LCD module of 256x64 pixel
@@ -128,7 +128,7 @@ static const struct fb_var_screeninfo picolcdfb_var = {
.bits_per_pixel = 1,
.grayscale = 1,
};
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
/* Input device
*
@@ -183,7 +183,7 @@ struct picolcd_data {
struct input_dev *input_cir;
unsigned short keycode[PICOLCD_KEYS];
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Framebuffer stuff */
u8 fb_update_rate;
u8 fb_bpp;
@@ -191,21 +191,21 @@ struct picolcd_data {
u8 *fb_bitmap; /* framebuffer */
struct fb_info *fb_info;
struct fb_deferred_io fb_defio;
-#endif /* CONFIG_FB */
-#if defined(CONFIG_LCD_CLASS_DEVICE) || defined(CONFIG_LCD_CLASS_DEVICE_MODULE)
+#endif /* CONFIG_HID_PICOLCD_FB */
+#ifdef CONFIG_HID_PICOLCD_LCD
struct lcd_device *lcd;
u8 lcd_contrast;
-#endif
-#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+#endif /* CONFIG_HID_PICOLCD_LCD */
+#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
struct backlight_device *backlight;
u8 lcd_brightness;
u8 lcd_power;
-#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
-#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
+#ifdef CONFIG_HID_PICOLCD_LEDS
/* LED stuff */
u8 led_state;
struct led_classdev *led[8];
-#endif /* CONFIG_LEDS_CLASS */
+#endif /* CONFIG_HID_PICOLCD_LEDS */
/* Housekeeping stuff */
spinlock_t lock;
@@ -287,7 +287,7 @@ static struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,
return work;
}
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Send a given tile to PicoLCD */
static int picolcd_fb_send_tile(struct hid_device *hdev, int chip, int tile)
{
@@ -766,9 +766,9 @@ static void picolcd_exit_framebuffer(struct picolcd_data *data)
{
}
#define picolcd_fbinfo(d) NULL
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
-#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
/*
* backlight class device
*/
@@ -864,9 +864,9 @@ static inline int picolcd_resume_backlight(struct picolcd_data *data)
{
return 0;
}
-#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
-#if defined(CONFIG_LCD_CLASS_DEVICE) || defined(CONFIG_LCD_CLASS_DEVICE_MODULE)
+#ifdef CONFIG_HID_PICOLCD_LCD
/*
* lcd class device
*/
@@ -957,9 +957,9 @@ static inline int picolcd_resume_lcd(struct picolcd_data *data)
{
return 0;
}
-#endif /* CONFIG_LCD_CLASS_DEVICE */
+#endif /* CONFIG_HID_PICOLCD_LCD */
-#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+#ifdef CONFIG_HID_PICOLCD_LEDS
/**
* LED class device
*/
@@ -1104,7 +1104,7 @@ static inline int picolcd_leds_set(struct picolcd_data *data)
{
return 0;
}
-#endif /* CONFIG_LEDS_CLASS */
+#endif /* CONFIG_HID_PICOLCD_LEDS */
/*
* input class device
@@ -1243,10 +1243,10 @@ static int picolcd_reset(struct hid_device *hdev)
picolcd_resume_lcd(data);
picolcd_resume_backlight(data);
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
if (data->fb_info)
schedule_delayed_work(&data->fb_info->deferred_work, 0);
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
picolcd_leds_set(data);
return 0;
--
1.6.4.4
--
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