linux-kernel - [PATCH v4 3/5] da850-evm: extract defines for SEL{A,B,C} pins in UI expander

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Date:	Tue, 23 Nov 2010 14:40:58 -0500
From:	Ben Gardiner <bengardiner@...ometrics.ca>
To:	Kevin Hilman <khilman@...prootsystems.com>,
	davinci-linux-open-source@...ux.davincidsp.com,
	linux-input@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Chris Cordahi <christophercordahi@...ometrics.ca>,
	Paul Mundt <lethal@...ux-sh.org>, Sekhar Nori <nsekhar@...com>,
	Victor Rodriguez <vm.rod25@...il.com>
Subject: [PATCH v4 3/5] da850-evm: extract defines for SEL{A,B,C} pins in UI expander

The setup and teardown methods of the UI expander reference the SEL_{A,B,C}
pins by 'magic number' in each function. This uses the common enum for their offsets
in the expander setup and teardown functions.

Signed-off-by: Ben Gardiner <bengardiner@...ometrics.ca>
Reviewed-by: Chris Cordahi <christophercordahi@...ometrics.ca>
Reviewed-by: Sekhar Nori <nsekhar@...com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
CC: Victor Rodriguez <vm.rod25@...il.com>

---

Changes since v3:
 * no changes in this patch of the series

Changes since v2:
 * rebased to 083eae3e28643e0eefc5243719f8b1572cf98299 of
   git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci.git
 * integrated the static array initialization patch provided by Sekhar Nori

Changes since v1:
 * No changes since v1

---
 arch/arm/mach-davinci/board-da850-evm.c |   24 ++++++++++++------------
 1 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 51f5ffa..420b628 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -361,23 +361,23 @@ static int da850_evm_ui_expander_setup(struct i2c_client *client, unsigned gpio,
 {
 	int sel_a, sel_b, sel_c, ret;
 
-	sel_a = gpio + 7;
-	sel_b = gpio + 6;
-	sel_c = gpio + 5;
+	sel_a = gpio + DA850_EVM_UI_EXP_SEL_A;
+	sel_b = gpio + DA850_EVM_UI_EXP_SEL_B;
+	sel_c = gpio + DA850_EVM_UI_EXP_SEL_C;
 
-	ret = gpio_request(sel_a, "sel_a");
+	ret = gpio_request(sel_a, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_A]);
 	if (ret) {
 		pr_warning("Cannot open UI expander pin %d\n", sel_a);
 		goto exp_setup_sela_fail;
 	}
 
-	ret = gpio_request(sel_b, "sel_b");
+	ret = gpio_request(sel_b, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_B]);
 	if (ret) {
 		pr_warning("Cannot open UI expander pin %d\n", sel_b);
 		goto exp_setup_selb_fail;
 	}
 
-	ret = gpio_request(sel_c, "sel_c");
+	ret = gpio_request(sel_c, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_C]);
 	if (ret) {
 		pr_warning("Cannot open UI expander pin %d\n", sel_c);
 		goto exp_setup_selc_fail;
@@ -420,13 +420,13 @@ static int da850_evm_ui_expander_teardown(struct i2c_client *client,
 	platform_device_unregister(&da850_evm_ui_keys_device);
 
 	/* deselect all functionalities */
-	gpio_set_value_cansleep(gpio + 5, 1);
-	gpio_set_value_cansleep(gpio + 6, 1);
-	gpio_set_value_cansleep(gpio + 7, 1);
+	gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_C, 1);
+	gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_B, 1);
+	gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_A, 1);
 
-	gpio_free(gpio + 5);
-	gpio_free(gpio + 6);
-	gpio_free(gpio + 7);
+	gpio_free(gpio + DA850_EVM_UI_EXP_SEL_C);
+	gpio_free(gpio + DA850_EVM_UI_EXP_SEL_B);
+	gpio_free(gpio + DA850_EVM_UI_EXP_SEL_A);
 
 	return 0;
 }
-- 
1.7.0.4

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