From patchwork Fri Mar 20 16:52:41 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kamil Debski X-Patchwork-Id: 6058361 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 93FCCBF90F for ; Fri, 20 Mar 2015 16:54:46 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 837CA203A9 for ; Fri, 20 Mar 2015 16:54:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3817620529 for ; Fri, 20 Mar 2015 16:54:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752171AbbCTQyh (ORCPT ); Fri, 20 Mar 2015 12:54:37 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:19210 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751624AbbCTQyd (ORCPT ); Fri, 20 Mar 2015 12:54:33 -0400 Received: from epcpsbgm2.samsung.com (epcpsbgm2 [203.254.230.27]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NLI00KHDSAVKA10@mailout3.samsung.com>; Sat, 21 Mar 2015 01:54:31 +0900 (KST) X-AuditID: cbfee61b-f79d76d0000024d6-3f-550c50c7446d Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id D1.4D.09430.7C05C055; Sat, 21 Mar 2015 01:54:31 +0900 (KST) Received: from AMDC1342.digital.local ([106.116.147.39]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NLI0059HS7XA7B0@mmp2.samsung.com>; Sat, 21 Mar 2015 01:54:31 +0900 (KST) From: Kamil Debski To: dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org Cc: m.szyprowski@samsung.com, k.debski@samsung.com, mchehab@osg.samsung.com, hverkuil@xs4all.nl, kyungmin.park@samsung.com, thomas@tommie-lie.de, sean@mess.org, dmitry.torokhov@gmail.com, linux-input@vger.kernel.org, Hans Verkuil Subject: [RFC v3 7/9] adv7604: add cec support. Date: Fri, 20 Mar 2015 17:52:41 +0100 Message-id: <1426870363-18839-8-git-send-email-k.debski@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1426870363-18839-1-git-send-email-k.debski@samsung.com> References: <1426870363-18839-1-git-send-email-k.debski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrHLMWRmVeSWpSXmKPExsVy+t9jQd3jATyhBsebtC0OL3rBaHHl63s2 iw8TZzJanJr8jMnix+sLbBZnm96wW9z89I3VomfDVlaLtUfuslusflZhsfDpdxaLhcva2Rx4 PKb83sjqsXPWXXaP+93HmTyWvLH22NIP5PVtWcXo8ejSHGaPz5vkPE59/cwewBnFZZOSmpNZ llqkb5fAlbHy0X7mgh1mFfdmXmZpYNyt3cXIySEhYCLxqvkcG4QtJnHh3nogm4tDSGA6o8Tn nW+ZIZwOJol9j84xdjFycLAJaEqsuucB0iAi4CAxbeMPJpAaZoEGJokNf08wgiSEBfQlluzt ZwGxWQRUJZ4camUFsXkFXCQ2/1nABDJHQkBBYs4kG5Awp4CrxNp9r8HKhYBKOu+vZpnAyLuA kWEVo2hqQXJBcVJ6rpFecWJucWleul5yfu4mRnCoPpPewbiqweIQowAHoxIP74FS7lAh1sSy 4srcQ4wSHMxKIrxt7jyhQrwpiZVVqUX58UWlOanFhxilOViUxHmV7NtChATSE0tSs1NTC1KL YLJMHJxSDYzcU+S1W53/Pv4kvq3j7v/3SZ+Pp5wQYFuv1Coteq/29e3XQt94OWY3PZxYtsLV fOUPruv6R8o3aKclrms/WetUudi3ZUZ7vrf/Z623s04tfLb35uzWvRwXXmiqVf8+fEnj9d4H 5xrvWPXV9WUGN7ek+z0SqmE52xi58qrRJcWFPbl586peXs9RYinOSDTUYi4qTgQA81o50FEC AAA= Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hans Verkuil Add CEC support to the adv7604 driver. Signed-off-by: Hans Verkuil [k.debski@samsung.com: Merged changes from CEC Updates commit by Hans Verkuil] Signed-off-by: Kamil Debski --- drivers/media/i2c/adv7604.c | 182 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index aaab9c9..ce9d123 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -42,6 +42,7 @@ #include #include #include +#include static int debug; module_param(debug, int, 0644); @@ -159,6 +160,10 @@ struct adv76xx_state { u16 spa_port_a[2]; struct v4l2_fract aspect_ratio; u32 rgb_quantization_range; + u8 cec_addr[3]; + u8 cec_valid_addrs; + bool cec_enabled_adap; + struct workqueue_struct *work_queues; struct delayed_work delayed_work_enable_hotplug; bool restart_stdi_once; @@ -1862,6 +1867,176 @@ static int adv76xx_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, return 0; } +static void adv7604_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status) +{ + if ((cec_read(sd, 0x11) & 0x01) == 0) { + v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__); + return; + } + + if (tx_raw_status & 0x02) { + v4l2_dbg(1, debug, sd, "%s: tx raw: arbitration lost\n", __func__); + v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE, (void *)CEC_TX_STATUS_ARB_LOST); + return; + } + if (tx_raw_status & 0x04) { + v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__); + v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE, (void *)CEC_TX_STATUS_RETRY_TIMEOUT); + return; + } + if (tx_raw_status & 0x01) { + v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__); + v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE, (void *)CEC_TX_STATUS_OK); + return; + } +} + +static void adv7604_cec_isr(struct v4l2_subdev *sd, bool *handled) +{ + struct cec_msg msg; + u8 cec_irq; + + /* cec controller */ + cec_irq = io_read(sd, 0x4d) & 0x0f; + if (!cec_irq) + return; + + v4l2_dbg(1, debug, sd, "%s: cec: irq 0x%x\n", __func__, cec_irq); + adv7604_cec_tx_raw_status(sd, cec_irq); + if (cec_irq & 0x08) { + msg.len = cec_read(sd, 0x25) & 0x1f; + if (msg.len > 16) + msg.len = 16; + + if (msg.len) { + u8 i; + + for (i = 0; i < msg.len; i++) + msg.msg[i] = cec_read(sd, i + 0x15); + cec_write(sd, 0x26, 0x01); /* re-enable rx */ + v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_RX_MSG, &msg); + } + } + + /* note: the bit order is swapped between 0x4d and 0x4e */ + cec_irq = ((cec_irq & 0x08) >> 3) | ((cec_irq & 0x04) >> 1) | + ((cec_irq & 0x02) << 1) | ((cec_irq & 0x01) << 3); + io_write(sd, 0x4e, cec_irq); + + if (handled) + *handled = true; +} + +static int adv7604_cec_enable(struct v4l2_subdev *sd, bool enable) +{ + struct adv7604_state *state = to_state(sd); + + if (!state->cec_enabled_adap && enable) { + cec_write_and_or(sd, 0x2a, 0xfe, 0x01); /* power up cec */ + cec_write(sd, 0x2c, 0x01); /* cec soft reset */ + cec_write_and_or(sd, 0x11, 0xfe, 0); /* initially disable tx */ + /* enabled irqs: */ + /* tx: ready */ + /* tx: arbitration lost */ + /* tx: retry timeout */ + /* rx: ready */ + io_write_and_or(sd, 0x50, 0xf0, 0x0f); + cec_write(sd, 0x26, 0x01); /* enable rx */ + } else if (state->cec_enabled_adap && !enable) { + io_write_and_or(sd, 0x50, 0xf0, 0x00); /* disable cec interrupts */ + cec_write_and_or(sd, 0x27, 0x8f, 0x70); /* disable address mask 1-3 */ + cec_write_and_or(sd, 0x2a, 0xfe, 0x00); /* power down cec section */ + state->cec_valid_addrs = 0; + } + state->cec_enabled_adap = enable; + return 0; +} + +#define ADV7604_MAX_ADDRS (3) + +static int adv7604_cec_log_addr(struct v4l2_subdev *sd, u8 addr) +{ + struct adv7604_state *state = to_state(sd); + unsigned i, free_idx = ADV7604_MAX_ADDRS; + + if (!state->cec_enabled_adap) + return -EIO; + + for (i = 0; i < ADV7604_MAX_ADDRS; i++) { + bool is_valid = state->cec_valid_addrs & (1 << i); + + if (free_idx == ADV7604_MAX_ADDRS && !is_valid) + free_idx = i; + if (is_valid && state->cec_addr[i] == addr) + return 0; + } + if (i == ADV7604_MAX_ADDRS) { + i = free_idx; + if (i == ADV7604_MAX_ADDRS) + return -ENXIO; + } + state->cec_addr[i] = addr; + state->cec_valid_addrs |= 1 << i; + + switch (i) { + case 0: + /* enable address mask 0 */ + cec_write_and_or(sd, 0x27, 0xef, 0x10); + /* set address for mask 0 */ + cec_write_and_or(sd, 0x28, 0xf0, addr); + break; + case 1: + /* enable address mask 1 */ + cec_write_and_or(sd, 0x27, 0xdf, 0x20); + /* set address for mask 1 */ + cec_write_and_or(sd, 0x28, 0x0f, addr << 4); + break; + case 2: + /* enable address mask 2 */ + cec_write_and_or(sd, 0x27, 0xbf, 0x40); + /* set address for mask 1 */ + cec_write_and_or(sd, 0x29, 0xf0, addr); + break; + } + return 0; +} + +static int adv7604_cec_transmit(struct v4l2_subdev *sd, struct cec_msg *msg) +{ + u8 len = msg->len; + unsigned i; + + if (len == 1) + cec_write_and_or(sd, 0x12, 0xf8, 1); /* allow for one retry for polling */ + else + cec_write_and_or(sd, 0x12, 0xf8, 3); /* allow for three retries */ + + if (len > 16) { + v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len); + return -EINVAL; + } + + /* write data */ + for (i = 0; i < len; i++) + cec_write(sd, i, msg->msg[i]); + + /* set length (data + header) */ + cec_write(sd, 0x10, len); + /* start transmit, enable tx */ + cec_write(sd, 0x11, 0x01); + /* For some reason sometimes the + * transmit won't start. + * Doing it twice seems to help ? + */ + cec_write(sd, 0x11, 0x01); + return 0; +} + +static void adv7604_cec_transmit_timed_out(struct v4l2_subdev *sd) +{ + cec_write_and_or(sd, 0x11, 0xfe, 0); /* disable tx */ +} + static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled) { struct adv76xx_state *state = to_state(sd); @@ -1907,6 +2082,9 @@ static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled) *handled = true; } + /* cec */ + adv7604_cec_isr(sd, handled); + /* tx 5v detect */ tx_5v = io_read(sd, 0x70) & info->cable_det_mask; if (tx_5v) { @@ -2301,6 +2479,10 @@ static const struct v4l2_subdev_video_ops adv76xx_video_ops = { .s_dv_timings = adv76xx_s_dv_timings, .g_dv_timings = adv76xx_g_dv_timings, .query_dv_timings = adv76xx_query_dv_timings, + .cec_enable = adv7604_cec_enable, + .cec_log_addr = adv7604_cec_log_addr, + .cec_transmit = adv7604_cec_transmit, + .cec_transmit_timed_out = adv7604_cec_transmit_timed_out, }; static const struct v4l2_subdev_pad_ops adv76xx_pad_ops = {