From patchwork Wed Jul 11 02:34:46 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Federico Vaga X-Patchwork-Id: 13309 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1Somj4-0007Dt-Pc for patchwork@linuxtv.org; Wed, 11 Jul 2012 04:32:26 +0200 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.75/mailfrontend-2) with esmtp for id 1Somj3-0007Bg-IY; Wed, 11 Jul 2012 04:32:26 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754877Ab2GKCbz (ORCPT ); Tue, 10 Jul 2012 22:31:55 -0400 Received: from mail-wi0-f178.google.com ([209.85.212.178]:43133 "EHLO mail-wi0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751235Ab2GKCbx (ORCPT ); Tue, 10 Jul 2012 22:31:53 -0400 Received: by wibhr14 with SMTP id hr14so612299wib.1 for ; Tue, 10 Jul 2012 19:31:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer; bh=obVoJ4Zgiv5GQPDTVeJ9t9SoCquSY7HX72m9Rw6VWvY=; b=ApOzt4QPt7gOMc2+fIN7IOkUabp7loydiWT5mP2exlKNoPEaw0XvLam8MZ76nwGVJg E4eTKxcRhVaHYthV1G8YGlIaaJC6UUOJccYQBXq7xR+vxRsfdw4y7wBhBq/BXPZHuLVN 7lxuapDR7DBVwzswyl5yc19PObLAxQGhQ9Oh9vwnmUU6AQRJerBp7LRx/fuhDFx8lOf3 sMil7F7kZQkLLn8ROTqeceSLgb2AQVr7AB/g5v4G24yD6vstT4RO+eKumCu4EbPNj1oi 2JDw54vhtnr2I+dSedfeIWvSer++GfKJEkUKKW+VfgrCbdlds+0xpiLrG6KuXajYx+EE 8lBw== Received: by 10.216.139.95 with SMTP id b73mr18015562wej.191.1341973912305; Tue, 10 Jul 2012 19:31:52 -0700 (PDT) Received: from harkonnen.fastwebnet.it (2-225-41-194.ip174.fastwebnet.it. [2.225.41.194]) by mx.google.com with ESMTPS id cu1sm22590378wib.6.2012.07.10.19.31.50 (version=SSLv3 cipher=OTHER); Tue, 10 Jul 2012 19:31:51 -0700 (PDT) From: Federico Vaga To: Mauro Carvalho Chehab Cc: Giancarlo Asnaghi , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Verkuil , Federico Vaga Subject: [PATCH RFC] [media] adv7180.c: convert to v4l2 control framework Date: Wed, 11 Jul 2012 04:34:46 +0200 Message-Id: <1341974086-27887-1-git-send-email-federico.vaga@gmail.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2012.7.11.22415 X-PMX-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' FORGED_FROM_GMAIL 0.1, MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, LINES_OF_YELLING_3 0.05, BODY_SIZE_10000_PLUS 0, ECARD_WORD 0, __ANY_URI 0, __CP_MEDIA_BODY 0, __FRAUD_BODY_WEBMAIL 0, __FRAUD_WEBMAIL 0, __FRAUD_WEBMAIL_FROM 0, __FROM_GMAIL 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __LINES_OF_YELLING 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __PHISH_SPEAR_STRUCTURE_1 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __URI_NO_PATH 0, __URI_NO_WWW 0, __URI_NS ' Signed-off-by: Federico Vaga --- drivers/media/video/adv7180.c | 221 +++++++++++++++++------------------------ 1 file changed, 90 insertions(+), 131 deletions(-) diff --git a/drivers/media/video/adv7180.c b/drivers/media/video/adv7180.c index 174bffa..7705456 100644 --- a/drivers/media/video/adv7180.c +++ b/drivers/media/video/adv7180.c @@ -26,11 +26,10 @@ #include #include #include +#include #include #include -#define DRIVER_NAME "adv7180" - #define ADV7180_INPUT_CONTROL_REG 0x00 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10 @@ -55,21 +54,21 @@ #define ADV7180_AUTODETECT_ENABLE_REG 0x07 #define ADV7180_AUTODETECT_DEFAULT 0x7f - +/* Contrast */ #define ADV7180_CON_REG 0x08 /*Unsigned */ -#define CON_REG_MIN 0 -#define CON_REG_DEF 128 -#define CON_REG_MAX 255 - +#define ADV7180_CON_MIN 0 +#define ADV7180_CON_DEF 128 +#define ADV7180_CON_MAX 255 +/* Brightness*/ #define ADV7180_BRI_REG 0x0a /*Signed */ -#define BRI_REG_MIN -128 -#define BRI_REG_DEF 0 -#define BRI_REG_MAX 127 - +#define ADV7180_BRI_MIN -128 +#define ADV7180_BRI_DEF 0 +#define ADV7180_BRI_MAX 127 +/* Hue */ #define ADV7180_HUE_REG 0x0b /*Signed, inverted */ -#define HUE_REG_MIN -127 -#define HUE_REG_DEF 0 -#define HUE_REG_MAX 128 +#define ADV7180_HUE_MIN -127 +#define ADV7180_HUE_DEF 0 +#define ADV7180_HUE_MAX 128 #define ADV7180_ADI_CTRL_REG 0x0e #define ADV7180_ADI_CTRL_IRQ_SPACE 0x20 @@ -98,12 +97,12 @@ #define ADV7180_ICONF1_ACTIVE_LOW 0x01 #define ADV7180_ICONF1_PSYNC_ONLY 0x10 #define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0 - +/* Saturation */ #define ADV7180_SD_SAT_CB_REG 0xe3 /*Unsigned */ #define ADV7180_SD_SAT_CR_REG 0xe4 /*Unsigned */ -#define SAT_REG_MIN 0 -#define SAT_REG_DEF 128 -#define SAT_REG_MAX 255 +#define ADV7180_SAT_MIN 0 +#define ADV7180_SAT_DEF 128 +#define ADV7180_SAT_MAX 255 #define ADV7180_IRQ1_LOCK 0x01 #define ADV7180_IRQ1_UNLOCK 0x02 @@ -121,18 +120,18 @@ #define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND 0x4F struct adv7180_state { + struct v4l2_ctrl_handler ctrl_hdl; struct v4l2_subdev sd; struct work_struct work; struct mutex mutex; /* mutual excl. when accessing chip */ int irq; v4l2_std_id curr_norm; bool autodetect; - s8 brightness; - s16 hue; - u8 contrast; - u8 saturation; u8 input; }; +#define to_adv7180_sd(_ctrl) &container_of(_ctrl->handler, \ + struct adv7180_state, \ + ctrl_hdl)->sd static v4l2_std_id adv7180_std_to_v4l2(u8 status1) { @@ -237,7 +236,7 @@ static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input, if (ret) return ret; - /*We cannot discriminate between LQFP and 40-pin LFCSP, so accept + /* We cannot discriminate between LQFP and 40-pin LFCSP, so accept * all inputs and let the card driver take care of validation */ if ((input & ADV7180_INPUT_CONTROL_INSEL_MASK) != input) @@ -316,117 +315,39 @@ out: return ret; } -static int adv7180_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) -{ - switch (qc->id) { - case V4L2_CID_BRIGHTNESS: - return v4l2_ctrl_query_fill(qc, BRI_REG_MIN, BRI_REG_MAX, - 1, BRI_REG_DEF); - case V4L2_CID_HUE: - return v4l2_ctrl_query_fill(qc, HUE_REG_MIN, HUE_REG_MAX, - 1, HUE_REG_DEF); - case V4L2_CID_CONTRAST: - return v4l2_ctrl_query_fill(qc, CON_REG_MIN, CON_REG_MAX, - 1, CON_REG_DEF); - case V4L2_CID_SATURATION: - return v4l2_ctrl_query_fill(qc, SAT_REG_MIN, SAT_REG_MAX, - 1, SAT_REG_DEF); - default: - break; - } - - return -EINVAL; -} - -static int adv7180_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct adv7180_state *state = to_state(sd); - int ret = mutex_lock_interruptible(&state->mutex); - if (ret) - return ret; - - switch (ctrl->id) { - case V4L2_CID_BRIGHTNESS: - ctrl->value = state->brightness; - break; - case V4L2_CID_HUE: - ctrl->value = state->hue; - break; - case V4L2_CID_CONTRAST: - ctrl->value = state->contrast; - break; - case V4L2_CID_SATURATION: - ctrl->value = state->saturation; - break; - default: - ret = -EINVAL; - } - - mutex_unlock(&state->mutex); - return ret; -} - -static int adv7180_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl) { + struct v4l2_subdev *sd = to_adv7180_sd(ctrl); struct adv7180_state *state = to_state(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = mutex_lock_interruptible(&state->mutex); + int val; + if (ret) return ret; - + val = ctrl->val; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: - if ((ctrl->value > BRI_REG_MAX) - || (ctrl->value < BRI_REG_MIN)) { - ret = -ERANGE; - break; - } - state->brightness = ctrl->value; - ret = i2c_smbus_write_byte_data(client, - ADV7180_BRI_REG, - state->brightness); + ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG, val); break; case V4L2_CID_HUE: - if ((ctrl->value > HUE_REG_MAX) - || (ctrl->value < HUE_REG_MIN)) { - ret = -ERANGE; - break; - } - state->hue = ctrl->value; /*Hue is inverted according to HSL chart */ - ret = i2c_smbus_write_byte_data(client, - ADV7180_HUE_REG, -state->hue); + ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, -val); break; case V4L2_CID_CONTRAST: - if ((ctrl->value > CON_REG_MAX) - || (ctrl->value < CON_REG_MIN)) { - ret = -ERANGE; - break; - } - state->contrast = ctrl->value; - ret = i2c_smbus_write_byte_data(client, - ADV7180_CON_REG, - state->contrast); + ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG, val); break; case V4L2_CID_SATURATION: - if ((ctrl->value > SAT_REG_MAX) - || (ctrl->value < SAT_REG_MIN)) { - ret = -ERANGE; - break; - } /* *This could be V4L2_CID_BLUE_BALANCE/V4L2_CID_RED_BALANCE *Let's not confuse the user, everybody understands saturation */ - state->saturation = ctrl->value; - ret = i2c_smbus_write_byte_data(client, - ADV7180_SD_SAT_CB_REG, - state->saturation); + ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG, + val); if (ret < 0) break; - ret = i2c_smbus_write_byte_data(client, - ADV7180_SD_SAT_CR_REG, - state->saturation); + ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG, + val); break; default: ret = -EINVAL; @@ -436,6 +357,42 @@ static int adv7180_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) return ret; } +static const struct v4l2_ctrl_ops adv7180_ctrl_ops = { + .s_ctrl = adv7180_s_ctrl, +}; + +static int adv7180_init_controls(struct adv7180_state *state) +{ + v4l2_ctrl_handler_init(&state->ctrl_hdl, 2); + + v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops, + V4L2_CID_BRIGHTNESS, ADV7180_BRI_MIN, + ADV7180_BRI_MAX, 1, ADV7180_BRI_DEF); + v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops, + V4L2_CID_CONTRAST, ADV7180_CON_MIN, + ADV7180_CON_MAX, 1, ADV7180_CON_DEF); + v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops, + V4L2_CID_SATURATION, ADV7180_SAT_MIN, + ADV7180_SAT_MAX, 1, ADV7180_SAT_DEF); + v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops, + V4L2_CID_HUE, ADV7180_HUE_MIN, + ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF); + state->sd.ctrl_handler = &state->ctrl_hdl; + if (state->ctrl_hdl.error) { + int err = state->ctrl_hdl.error; + + v4l2_ctrl_handler_free(&state->ctrl_hdl); + return err; + } + v4l2_ctrl_handler_setup(&state->ctrl_hdl); + + return 0; +} +static void adv7180_exit_controls(struct adv7180_state *state) +{ + v4l2_ctrl_handler_free(&state->ctrl_hdl); +} + static const struct v4l2_subdev_video_ops adv7180_video_ops = { .querystd = adv7180_querystd, .g_input_status = adv7180_g_input_status, @@ -445,9 +402,9 @@ static const struct v4l2_subdev_video_ops adv7180_video_ops = { static const struct v4l2_subdev_core_ops adv7180_core_ops = { .g_chip_ident = adv7180_g_chip_ident, .s_std = adv7180_s_std, - .queryctrl = adv7180_queryctrl, - .g_ctrl = adv7180_g_ctrl, - .s_ctrl = adv7180_s_ctrl, + .queryctrl = v4l2_subdev_queryctrl, + .g_ctrl = v4l2_subdev_g_ctrl, + .s_ctrl = v4l2_subdev_s_ctrl, }; static const struct v4l2_subdev_ops adv7180_ops = { @@ -539,7 +496,7 @@ static int init_device(struct i2c_client *client, struct adv7180_state *state) /* register for interrupts */ if (state->irq > 0) { - ret = request_irq(state->irq, adv7180_irq, 0, DRIVER_NAME, + ret = request_irq(state->irq, adv7180_irq, 0, KBUILD_MODNAME, state); if (ret) return ret; @@ -582,26 +539,27 @@ static int init_device(struct i2c_client *client, struct adv7180_state *state) /*Set default value for controls */ ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG, - state->brightness); + ADV7180_BRI_DEF); if (ret < 0) return ret; - ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, state->hue); + ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, + ADV7180_HUE_DEF); if (ret < 0) return ret; ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG, - state->contrast); + ADV7180_CON_DEF); if (ret < 0) return ret; ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG, - state->saturation); + ADV7180_SAT_DEF); if (ret < 0) return ret; ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG, - state->saturation); + ADV7180_SAT_DEF); if (ret < 0) return ret; @@ -632,25 +590,26 @@ static __devinit int adv7180_probe(struct i2c_client *client, INIT_WORK(&state->work, adv7180_work); mutex_init(&state->mutex); state->autodetect = true; - state->brightness = BRI_REG_DEF; - state->hue = HUE_REG_DEF; - state->contrast = CON_REG_DEF; - state->saturation = SAT_REG_DEF; state->input = 0; sd = &state->sd; v4l2_i2c_subdev_init(sd, client, &adv7180_ops); - ret = init_device(client, state); - if (0 != ret) + ret = adv7180_init_controls(state); + if (ret) goto err_unreg_subdev; + ret = init_device(client, state); + if (ret) + goto err_free_ctrl; return 0; +err_free_ctrl: + adv7180_exit_controls(state); err_unreg_subdev: mutex_destroy(&state->mutex); v4l2_device_unregister_subdev(sd); kfree(state); err: - printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", ret); + printk(KERN_ERR KBUILD_MODNAME ": Failed to probe: %d\n", ret); return ret; } @@ -678,7 +637,7 @@ static __devexit int adv7180_remove(struct i2c_client *client) } static const struct i2c_device_id adv7180_id[] = { - {DRIVER_NAME, 0}, + {KBUILD_MODNAME, 0}, {}, }; @@ -716,7 +675,7 @@ MODULE_DEVICE_TABLE(i2c, adv7180_id); static struct i2c_driver adv7180_driver = { .driver = { .owner = THIS_MODULE, - .name = DRIVER_NAME, + .name = KBUILD_MODNAME, }, .probe = adv7180_probe, .remove = __devexit_p(adv7180_remove),