From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Sebastian Reichel <sre@kernel.org>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Nikhil Devshatwar <nikhil.nd@ti.com>,
<linux-omap@vger.kernel.org>, <dri-devel@lists.freedesktop.org>
Cc: Sekhar Nori <nsekhar@ti.com>, Tony Lindgren <tony@atomide.com>,
<hns@goldelico.com>,
Sebastian Reichel <sebastian.reichel@collabora.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>
Subject: [PATCH v4 10/80] drm/omap: dsi: simplify read functions
Date: Tue, 24 Nov 2020 14:44:28 +0200 [thread overview]
Message-ID: <20201124124538.660710-11-tomi.valkeinen@ti.com> (raw)
In-Reply-To: <20201124124538.660710-1-tomi.valkeinen@ti.com>
From: Sebastian Reichel <sebastian.reichel@collabora.com>
Simplify the read related message handling by using the functionality
provided by CONFIG_DRM_MIPI_DSI.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
drivers/gpu/drm/omapdrm/dss/dsi.c | 110 +++++++++---------------------
1 file changed, 34 insertions(+), 76 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index e1595c0608f2..bbdc52ee3559 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -2742,60 +2742,6 @@ static int dsi_vc_write_common(struct omap_dss_device *dssdev,
return 0;
}
-static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel,
- u8 dcs_cmd)
-{
- int r;
-
- if (dsi->debug_read)
- DSSDBG("dsi_vc_dcs_send_read_request(ch%d, dcs_cmd %x)\n",
- channel, dcs_cmd);
-
- r = dsi_vc_send_short(dsi, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
- if (r) {
- DSSERR("dsi_vc_dcs_send_read_request(ch %d, cmd 0x%02x)"
- " failed\n", channel, dcs_cmd);
- return r;
- }
-
- return 0;
-}
-
-static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel,
- const u8 *reqdata, int reqlen)
-{
- u16 data;
- u8 data_type;
- int r;
-
- if (dsi->debug_read)
- DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n",
- channel, reqlen);
-
- if (reqlen == 0) {
- data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM;
- data = 0;
- } else if (reqlen == 1) {
- data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM;
- data = reqdata[0];
- } else if (reqlen == 2) {
- data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM;
- data = reqdata[0] | (reqdata[1] << 8);
- } else {
- BUG();
- return -EINVAL;
- }
-
- r = dsi_vc_send_short(dsi, channel, data_type, data, 0);
- if (r) {
- DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)"
- " failed\n", channel, reqlen);
- return r;
- }
-
- return 0;
-}
-
static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int channel, u8 *buf,
int buflen, enum dss_dsi_content_type type)
{
@@ -2904,13 +2850,18 @@ static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int channel, u8 *buf,
return r;
}
-static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
- u8 *buf, int buflen)
+static int dsi_vc_dcs_read(struct omap_dss_device *dssdev,
+ const struct mipi_dsi_msg *msg)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
+ u8 dcs_cmd = ((u8 *)msg->tx_buf)[0];
+ u8 channel = msg->channel;
int r;
- r = dsi_vc_dcs_send_read_request(dsi, channel, dcs_cmd);
+ if (dsi->debug_read)
+ DSSDBG("%s(ch %d, cmd %x)\n", __func__, channel, dcs_cmd);
+
+ r = dsi_vc_send_short(dsi, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
if (r)
goto err;
@@ -2918,47 +2869,58 @@ static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_c
if (r)
goto err;
- r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
+ r = dsi_vc_read_rx_fifo(dsi, channel, msg->rx_buf, msg->rx_len,
DSS_DSI_CONTENT_DCS);
if (r < 0)
goto err;
- if (r != buflen) {
+ if (r != msg->rx_len) {
r = -EIO;
goto err;
}
return 0;
err:
- DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", channel, dcs_cmd);
+ DSSERR("%s(ch %d, cmd 0x%02x) failed\n", __func__, msg->channel, dcs_cmd);
return r;
}
-static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
- const u8 *reqdata, int reqlen, u8 *buf, int buflen)
+static int dsi_vc_generic_read(struct omap_dss_device *dssdev,
+ const struct mipi_dsi_msg *msg)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
+ struct mipi_dsi_packet packet;
+ u16 data;
int r;
- r = dsi_vc_generic_send_read_request(dsi, channel, reqdata, reqlen);
+ r = mipi_dsi_create_packet(&packet, msg);
+ if (r < 0)
+ goto err;
+
+ data = packet.header[1] | (packet.header[2] << 8);
+
+ r = dsi_vc_send_short(dsi, msg->channel, msg->type, data, 0);
if (r)
- return r;
+ goto err;
- r = dsi_vc_send_bta_sync(dssdev, channel);
+ r = dsi_vc_send_bta_sync(dssdev, msg->channel);
if (r)
- return r;
+ goto err;
- r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
+ r = dsi_vc_read_rx_fifo(dsi, msg->channel, msg->rx_buf, msg->rx_len,
DSS_DSI_CONTENT_GENERIC);
if (r < 0)
- return r;
+ goto err;
- if (r != buflen) {
+ if (r != msg->rx_len) {
r = -EIO;
- return r;
+ goto err;
}
return 0;
+err:
+ DSSERR("%s(ch %d, reqlen %d) failed\n", __func__, msg->channel, msg->tx_len);
+ return r;
}
static int dsi_enter_ulps(struct dsi_data *dsi)
@@ -4775,13 +4737,9 @@ static ssize_t omap_dsi_transfer(struct omap_dss_device *dssdev,
case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
- return dsi_vc_generic_read(dssdev, msg->channel,
- msg->tx_buf, msg->tx_len,
- msg->rx_buf, msg->rx_len);
+ return dsi_vc_generic_read(dssdev, msg);
case MIPI_DSI_DCS_READ:
- return dsi_vc_dcs_read(dssdev, msg->channel,
- ((u8 *)msg->tx_buf)[0],
- msg->rx_buf, msg->rx_len);
+ return dsi_vc_dcs_read(dssdev, msg);
}
return -EINVAL;
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2020-11-24 12:46 UTC|newest]
Thread overview: 152+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-24 12:44 [PATCH v4 00/80] Convert DSI code to use drm_mipi_dsi and drm_panel Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 01/80] Revert "drm/omap: dss: Remove unused omap_dss_device operations" Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 02/80] drm/omap: drop unused dsi.configure_pins Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 03/80] drm/omap: dsi: use MIPI_DSI_FMT_* instead of OMAP_DSS_DSI_FMT_* Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 04/80] drm/omap: constify write buffers Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 05/80] drm/omap: dsi: add generic transfer function Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 06/80] drm/omap: panel-dsi-cm: convert to transfer API Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 07/80] drm/omap: dsi: unexport specific data transfer functions Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 08/80] drm/omap: dsi: drop virtual channel logic Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 09/80] drm/omap: dsi: simplify write function Tomi Valkeinen
2020-11-24 12:44 ` Tomi Valkeinen [this message]
2020-11-24 12:44 ` [PATCH v4 11/80] drm/omap: dsi: switch dsi_vc_send_long/short to mipi_dsi_msg Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 12/80] drm/omap: dsi: introduce mipi_dsi_host Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 13/80] drm/omap: panel-dsi-cm: use DSI helpers Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 14/80] drm/omap: dsi: request VC via mipi_dsi_attach Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 15/80] drm/omap: panel-dsi-cm: drop hardcoded VC Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 16/80] drm/omap: panel-dsi-cm: use common MIPI DCS 1.3 defines Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 17/80] drm/omap: dsi: drop unused memory_read() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 18/80] drm/omap: dsi: drop unused get_te() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 19/80] drm/omap: dsi: drop unused enable_te() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 20/80] drm/omap: dsi: drop useless sync() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 21/80] drm/omap: dsi: use pixel-format and mode from attach Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 22/80] drm/omap: panel-dsi-cm: use bulk regulator API Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 23/80] drm/omap: dsi: lp/hs switching support for transfer() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 24/80] drm/omap: dsi: move TE GPIO handling into core Tomi Valkeinen
2021-02-08 17:55 ` Tony Lindgren
2021-02-11 7:34 ` Tomi Valkeinen
2021-02-11 17:35 ` Tony Lindgren
2021-02-17 7:42 ` Tomi Valkeinen
2021-02-18 5:57 ` Tony Lindgren
2021-02-22 8:47 ` Tomi Valkeinen
2021-02-25 12:46 ` Tony Lindgren
2021-02-26 9:04 ` Tomi Valkeinen
2021-02-27 7:18 ` Tony Lindgren
2020-11-24 12:44 ` [PATCH v4 25/80] drm/omap: dsi: drop custom enable_te() API Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 26/80] drm/omap: dsi: do bus locking in host driver Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 27/80] drm/omap: dsi: untangle ulps ops from enable/disable Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 28/80] drm/omap: dsi: do ULPS in host driver Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 29/80] drm/omap: dsi: move panel refresh function to host Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 30/80] drm/omap: dsi: Reverse direction of the DSS device enable/disable operations Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 31/80] drm/omap: dsi: drop custom panel capability support Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 32/80] drm/omap: dsi: convert to drm_panel Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 33/80] drm/omap: drop omapdss-boot-init Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 34/80] drm/omap: dsi: implement check timings Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 35/80] drm/omap: panel-dsi-cm: use DEVICE_ATTR_RO Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 36/80] drm/omap: panel-dsi-cm: support unbinding Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 37/80] drm/omap: panel-dsi-cm: fix remove() Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 38/80] drm/omap: remove global dss_device variable Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 39/80] drm/panel: Move OMAP's DSI command mode panel driver Tomi Valkeinen
2021-01-08 21:23 ` Dixit, Ashutosh
2021-01-08 21:54 ` Sebastian Reichel
2020-11-24 12:44 ` [PATCH v4 40/80] drm/omap: dsi: Register a drm_bridge Tomi Valkeinen
2020-11-24 12:44 ` [PATCH v4 41/80] drm/omap: remove legacy DSS device operations Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 42/80] drm/omap: remove unused omap_connector Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 43/80] drm/omap: simplify omap_display_id Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 44/80] drm/omap: drop unused DSS next pointer Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 45/80] drm/omap: drop DSS ops_flags Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 46/80] drm/omap: drop dssdev display field Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 47/80] drm/omap: simplify DSI manual update code Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 48/80] drm/omap: dsi: simplify pin config Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 49/80] ARM: omap2plus_defconfig: Update for moved DSI command mode panel Tomi Valkeinen
2020-12-01 8:46 ` Tony Lindgren
2020-11-24 12:45 ` [PATCH v4 50/80] drm/omap: squash omapdrm sub-modules into one Tomi Valkeinen
2020-12-14 12:53 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 51/80] drm/omap: remove unused display.c Tomi Valkeinen
2020-12-14 12:53 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 52/80] drm/omap: drop unused owner field Tomi Valkeinen
2020-12-14 12:53 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 53/80] drm/omap: remove dispc_ops Tomi Valkeinen
2020-12-14 12:54 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 54/80] drm/omap: remove dss_mgr_ops Tomi Valkeinen
2020-12-14 12:54 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 55/80] drm/panel: panel-dsi-cm: use MIPI_DCS_GET_ERROR_COUNT_ON_DSI Tomi Valkeinen
2020-11-24 16:18 ` Sam Ravnborg
2020-11-24 16:26 ` Tomi Valkeinen
2020-11-24 16:38 ` Sam Ravnborg
2020-11-25 8:52 ` Tomi Valkeinen
2020-11-30 9:50 ` Laurent Pinchart
2020-12-14 12:54 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 56/80] drm/panel: panel-dsi-cm: cleanup tear enable Tomi Valkeinen
2020-11-24 17:25 ` Sam Ravnborg
2020-11-30 9:51 ` Laurent Pinchart
2020-12-14 12:54 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 57/80] ARM: dts: omap5: add address-cells & size-cells to dsi Tomi Valkeinen
2020-11-30 9:53 ` Laurent Pinchart
2020-12-01 10:39 ` Tomi Valkeinen
2020-12-01 10:47 ` Tony Lindgren
2020-12-14 12:55 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 58/80] drm/omap: pll: fix iteration loop check Tomi Valkeinen
2020-11-30 9:54 ` Laurent Pinchart
2020-12-14 12:55 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 59/80] drm/omap: dsi: set trans_mode according to client mode_flags Tomi Valkeinen
2020-11-30 9:55 ` Laurent Pinchart
2020-12-14 12:56 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 60/80] drm/panel: panel-dsi-cm: set column & page at setup Tomi Valkeinen
2020-11-24 17:30 ` Sam Ravnborg
2020-11-24 18:19 ` Tomi Valkeinen
2020-11-30 9:56 ` Laurent Pinchart
2020-12-14 12:59 ` Sebastian Reichel
2020-11-24 12:45 ` [PATCH v4 61/80] drm/omap: dsi: send nop instead of page & column Tomi Valkeinen
2020-11-30 9:58 ` Laurent Pinchart
2020-12-01 10:59 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 62/80] drm/omap: dsi: simplify VC handling Tomi Valkeinen
2020-11-30 10:00 ` Laurent Pinchart
2020-12-01 11:11 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 63/80] drm/omap: dsi: drop useless channel checks Tomi Valkeinen
2020-12-01 0:14 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 64/80] drm/omap: dsi: cleanup channel usages Tomi Valkeinen
2020-12-01 0:17 ` Laurent Pinchart
2020-12-01 11:23 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 65/80] drm/omap: dsi: skip dsi_vc_enable_hs when already in correct mode Tomi Valkeinen
2020-12-01 0:18 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 66/80] drm/omap: dsi: set LP/HS before update Tomi Valkeinen
2020-12-01 0:20 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 67/80] drm/omap: dsi: use separate VCs for cmd and video Tomi Valkeinen
2020-12-01 0:21 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 68/80] drm/panel: panel-dsi-cm: remove extra 'if' Tomi Valkeinen
2020-11-24 17:34 ` Sam Ravnborg
2020-12-01 0:22 ` Laurent Pinchart
2020-12-01 11:26 ` Tomi Valkeinen
2020-12-02 20:08 ` kernel test robot
2020-11-24 12:45 ` [PATCH v4 69/80] drm/panel: panel-dsi-cm: add panel database to driver Tomi Valkeinen
2020-11-24 17:35 ` Sam Ravnborg
2020-12-01 0:23 ` Laurent Pinchart
2020-12-01 11:29 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 70/80] drm/panel: panel-dsi-cm: drop unneeded includes Tomi Valkeinen
2020-11-24 17:36 ` Sam Ravnborg
2020-12-01 0:27 ` Laurent Pinchart
2020-12-01 11:33 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 71/80] drm/omap: dsi: move structs & defines to dsi.h Tomi Valkeinen
2020-12-01 0:31 ` Laurent Pinchart
2020-12-01 11:37 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 72/80] drm/omap: dsi: move enable/disable to bridge enable/disable Tomi Valkeinen
2020-12-01 0:32 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 73/80] drm/omap: dsi: display_enable cleanup Tomi Valkeinen
2020-12-01 0:32 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 74/80] drm/omap: dsi: display_disable cleanup Tomi Valkeinen
2020-12-01 0:33 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 75/80] drm/omap: dsi: rename dsi_display_* functions Tomi Valkeinen
2020-12-01 0:34 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 76/80] drm/omap: dsi: cleanup initial vc setup Tomi Valkeinen
2020-12-01 0:36 ` Laurent Pinchart
2020-12-01 11:51 ` Tomi Valkeinen
2020-11-24 12:45 ` [PATCH v4 77/80] drm/omap: dsi: split video mode enable/disable into separate func Tomi Valkeinen
2020-12-01 0:37 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 78/80] drm/omap: dsi: fix and cleanup ddr_clk_always_on Tomi Valkeinen
2020-12-01 0:38 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 79/80] drm/omap: dsi: remove ulps support Tomi Valkeinen
2020-12-01 0:39 ` Laurent Pinchart
2020-11-24 12:45 ` [PATCH v4 80/80] drm/omap: dsi: fix DCS_CMD_ENABLE Tomi Valkeinen
2020-12-01 0:40 ` Laurent Pinchart
2020-11-30 9:39 ` [PATCH v4 81/80] drm/omap: dsi: allow DSI commands to be sent early Tomi Valkeinen
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