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of/gpio: add default of_xlate function if device has a node pointer

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Implement generic OF gpio hooks and thus make device-enabled GPIO chips
(i.e.  the ones that have gpio_chip->dev specified) automatically attach
to the OpenFirmware subsystem.  Which means that now we can handle I2C and
SPI GPIO chips almost* transparently.

* "Almost" because some chips still require platform data, and for these
  chips OF-glue is still needed, though with this change the glue will
  be much smaller.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Bill Gatliff <bgat@billgatliff.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
CC: linux-kernel@vger.kernel.org
CC: devicetree-discuss@lists.ozlabs.org
This commit is contained in:
Anton Vorontsov
2010-06-08 07:48:17 -06:00
committed by Grant Likely
parent 594fa265e0
commit 391c970c0d
13 changed files with 34 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/sysdev/cpm1.c
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@@ -633,7 +633,6 @@ int cpm1_gpiochip_add16(struct device_node *np)
gc = &mm_gc->gc;
mm_gc->save_regs = cpm1_gpio16_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = 16;
gc->direction_input = cpm1_gpio16_dir_in;
gc->direction_output = cpm1_gpio16_dir_out;
@@ -755,7 +754,6 @@ int cpm1_gpiochip_add32(struct device_node *np)
gc = &mm_gc->gc;
mm_gc->save_regs = cpm1_gpio32_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = 32;
gc->direction_input = cpm1_gpio32_dir_in;
gc->direction_output = cpm1_gpio32_dir_out;

1
arch/powerpc/sysdev/cpm_common.c
View File

@@ -337,7 +337,6 @@ int cpm2_gpiochip_add32(struct device_node *np)
gc = &mm_gc->gc;
mm_gc->save_regs = cpm2_gpio32_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = 32;
gc->direction_input = cpm2_gpio32_dir_in;
gc->direction_output = cpm2_gpio32_dir_out;

1
arch/powerpc/sysdev/mpc8xxx_gpio.c
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@@ -273,7 +273,6 @@ static void __init mpc8xxx_add_controller(struct device_node *np)
gc = &mm_gc->gc;
mm_gc->save_regs = mpc8xxx_gpio_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = MPC8XXX_GPIO_PINS;
gc->direction_input = mpc8xxx_gpio_dir_in;
gc->direction_output = mpc8xxx_gpio_dir_out;

1
arch/powerpc/sysdev/ppc4xx_gpio.c
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@@ -194,7 +194,6 @@ static int __init ppc4xx_add_gpiochips(void)
mm_gc = &ppc4xx_gc->mm_gc;
gc = &mm_gc->gc;
gc->of_gpio_n_cells = 2;
gc->ngpio = 32;
gc->direction_input = ppc4xx_gpio_dir_in;
gc->direction_output = ppc4xx_gpio_dir_out;

1
arch/powerpc/sysdev/qe_lib/gpio.c
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@@ -321,7 +321,6 @@ static int __init qe_add_gpiochips(void)
gc = &mm_gc->gc;
mm_gc->save_regs = qe_gpio_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = QE_PIO_PINS;
gc->direction_input = qe_gpio_dir_in;
gc->direction_output = qe_gpio_dir_out;

1
arch/powerpc/sysdev/simple_gpio.c
View File

@@ -103,7 +103,6 @@ static int __init u8_simple_gpiochip_add(struct device_node *np)
gc = &mm_gc->gc;
mm_gc->save_regs = u8_gpio_save_regs;
gc->of_gpio_n_cells = 2;
gc->ngpio = 8;
gc->direction_input = u8_gpio_dir_in;
gc->direction_output = u8_gpio_dir_out;