From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jingoo Han Date: Tue, 27 Nov 2012 01:10:38 +0000 Subject: Re: [PATCH 1/5] backlight: Add GPIO-based backlight driver Message-Id: <33110366.44811353978636788.JavaMail.weblogic@epv6ml07> List-Id: References: <1353688515-30458-2-git-send-email-laurent.pinchart+renesas@ideasonboard.com> In-Reply-To: <1353688515-30458-2-git-send-email-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Laurent Pinchart Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, "linux-sh@vger.kernel.org" , "linux-fbdev@vger.kernel.org" , Paul Mundt , Magnus Damm , Richard Purdie , Kuninori Morimoto , Jingoo Han T24gU2F0dXJkYXksIE5vdmVtYmVyIDI0LCAyMDEyIDE6MzUgQU0sIExhdXJlbnQgUGluY2hhcnQg d3JvdGUNCj4gDQo+IFNpZ25lZC1vZmYtYnk6IExhdXJlbnQgUGluY2hhcnQgPGxhdXJlbnQucGlu Y2hhcnRAaWRlYXNvbmJvYXJkLmNvbT4NCj4gLS0tDQo+ICBkcml2ZXJzL3ZpZGVvL2JhY2tsaWdo dC9LY29uZmlnICAgICAgICAgIHwgICAgNyArKw0KPiAgZHJpdmVycy92aWRlby9iYWNrbGlnaHQv TWFrZWZpbGUgICAgICAgICB8ICAgIDEgKw0KPiAgZHJpdmVycy92aWRlby9iYWNrbGlnaHQvZ3Bp b19iYWNrbGlnaHQuYyB8ICAxNTggKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrDQo+ICBp bmNsdWRlL3ZpZGVvL2dwaW9fYmFja2xpZ2h0LmggICAgICAgICAgIHwgICAyMSArKysrDQo+ICA0 IGZpbGVzIGNoYW5nZWQsIDE4NyBpbnNlcnRpb25zKCspLCAwIGRlbGV0aW9ucygtKQ0KPiAgY3Jl YXRlIG1vZGUgMTAwNjQ0IGRyaXZlcnMvdmlkZW8vYmFja2xpZ2h0L2dwaW9fYmFja2xpZ2h0LmMN Cj4gIGNyZWF0ZSBtb2RlIDEwMDY0NCBpbmNsdWRlL3ZpZGVvL2dwaW9fYmFja2xpZ2h0LmgNCg0K Wy4uLl0NCg0KPiArc3RhdGljIGludCBfX2RldmluaXQgZ3Bpb19iYWNrbGlnaHRfcHJvYmUoc3Ry dWN0IHBsYXRmb3JtX2RldmljZSAqcGRldikNCj4gK3sNCj4gKwlzdHJ1Y3QgZ3Bpb19iYWNrbGln aHRfcGxhdGZvcm1fZGF0YSAqcGRhdGEgPSBwZGV2LT5kZXYucGxhdGZvcm1fZGF0YTsNCj4gKwlz dHJ1Y3QgYmFja2xpZ2h0X3Byb3BlcnRpZXMgcHJvcHM7DQo+ICsJc3RydWN0IGJhY2tsaWdodF9k ZXZpY2UgKmJsOw0KPiArCXN0cnVjdCBncGlvX2JhY2tsaWdodCAqZ2JsOw0KPiArCWludCByZXQ7 DQo+ICsNCj4gKwlnYmwgPSBkZXZtX2t6YWxsb2MoJnBkZXYtPmRldiwgc2l6ZW9mKCpnYmwpLCBH RlBfS0VSTkVMKTsNCj4gKwlpZiAoZ2JsID09IE5VTEwpDQo+ICsJCXJldHVybiAtRU5PTUVNOw0K PiArDQo+ICsJZ2JsLT5kZXYgPSAmcGRldi0+ZGV2Ow0KPiArDQo+ICsJaWYgKCFwZGF0YSkgew0K PiArCQlkZXZfZXJyKCZwZGV2LT5kZXYsICJmYWlsZWQgdG8gZmluZCBwbGF0Zm9ybSBkYXRhXG4i KTsNCj4gKwkJcmV0dXJuIC1FTk9ERVY7DQo+ICsJfQ0KPiArDQo+ICsJZ2JsLT5mYmRldiA9IHBk YXRhLT5mYmRldjsNCj4gKwlnYmwtPmdwaW8gPSBwZGF0YS0+Z3BpbzsNCj4gKwlnYmwtPmFjdGl2 ZSA9IHBkYXRhLT5hY3RpdmVfbG93ID8gMCA6IDE7DQo+ICsNCj4gKwlyZXQgPSBkZXZtX2dwaW9f cmVxdWVzdF9vbmUoZ2JsLT5kZXYsIGdibC0+Z3BpbywgR1BJT0ZfRElSX09VVCwNCj4gKwkJCQkg ICAgcGRhdGEtPm5hbWUpOw0KDQpQbGVhc2UgdXNlIEdQSU9GX0lOSVQgZmxhZ3MgaWYgeW91IHdh bnQgdG8gdHVybiBvZmYgR1BJTyBiYWNrbGlnaHQuDQpJZiBnYmwtPmFjdGl2ZSBpcyBpbnZlcnRl ZCwgR1BJT0ZfSU5JVF9ISUdIIGNhbiBiZSB1c2VkIGFzIGJlbG93Og0KDQoJcmV0ID0gZGV2bV9n cGlvX3JlcXVlc3Rfb25lKGdibC0+ZGV2LCBnYmwtPmdwaW8sDQoJCQkJICAgIEdQSU9GX0RJUl9P VVQgfCAoZ2JsLT5hY3RpdmUgPw0KCQkJCSAgICBHUElPRl9JTklUX0xPVyA6IEdQSU9GX0lOSVRf SElHSCksDQoJCQkJICAgIHBkYXRhLT5uYW1lKTsNCg0KQmVzdCByZWdhcmRzLA0KSmluZ29vIEhh bg0KDQo+ICsJaWYgKHJldCA8IDApIHsNCj4gKwkJZGV2X2VycigmcGRldi0+ZGV2LCAidW5hYmxl IHRvIHJlcXVlc3QgR1BJT1xuIik7DQo+ICsJCXJldHVybiByZXQ7DQo+ICsJfQ0KPiArDQo+ICsJ bWVtc2V0KCZwcm9wcywgMCwgc2l6ZW9mKHByb3BzKSk7DQo+ICsJcHJvcHMudHlwZSA9IEJBQ0tM SUdIVF9SQVc7DQo+ICsJcHJvcHMubWF4X2JyaWdodG5lc3MgPSAxOw0KPiArCWJsID0gYmFja2xp Z2h0X2RldmljZV9yZWdpc3RlcihkZXZfbmFtZSgmcGRldi0+ZGV2KSwgJnBkZXYtPmRldiwgZ2Js LA0KPiArCQkJCSAgICAgICAmZ3Bpb19iYWNrbGlnaHRfb3BzLCAmcHJvcHMpOw0KPiArCWlmIChJ U19FUlIoYmwpKSB7DQo+ICsJCWRldl9lcnIoJnBkZXYtPmRldiwgImZhaWxlZCB0byByZWdpc3Rl ciBiYWNrbGlnaHRcbiIpOw0KPiArCQlyZXR1cm4gUFRSX0VSUihibCk7DQo+ICsJfQ0KPiArDQo+ ICsJYmwtPnByb3BzLmJyaWdodG5lc3MgPSBwZGF0YS0+ZGVmX3ZhbHVlOw0KPiArCWJhY2tsaWdo dF91cGRhdGVfc3RhdHVzKGJsKTsNCj4gKw0KPiArCXBsYXRmb3JtX3NldF9kcnZkYXRhKHBkZXYs IGJsKTsNCj4gKwlyZXR1cm4gMDsNCj4gK30NCg0KDQo