From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Sebastian Reichel <sre@kernel.org>,
Nikhil Devshatwar <nikhil.nd@ti.com>,
linux-omap@vger.kernel.org, dri-devel@lists.freedesktop.org,
Sekhar Nori <nsekhar@ti.com>, Tony Lindgren <tony@atomide.com>,
hns@goldelico.com
Subject: Re: [PATCH v4 76/80] drm/omap: dsi: cleanup initial vc setup
Date: Tue, 1 Dec 2020 02:36:28 +0200 [thread overview]
Message-ID: <20201201003628.GU25713@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20201124124538.660710-77-tomi.valkeinen@ti.com>
Hi Tomi,
Thank you for the patch.
On Tue, Nov 24, 2020 at 02:45:34PM +0200, Tomi Valkeinen wrote:
> As we now have a fixed setup for VCs (VC0 for video stream, VC1 for
> commands), we can simplify the VC setup.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
> ---
> drivers/gpu/drm/omapdrm/dss/dsi.c | 85 +++++++++++--------------------
> 1 file changed, 31 insertions(+), 54 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
> index ff8ace957291..27d0d119668b 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dsi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
> @@ -2017,40 +2017,6 @@ static void dsi_vc_initial_config(struct dsi_data *dsi, int vc)
> dsi->vc[vc].source = DSI_VC_SOURCE_L4;
> }
>
> -static int dsi_vc_config_source(struct dsi_data *dsi, int vc,
> - enum dsi_vc_source source)
> -{
> - if (dsi->vc[vc].source == source)
> - return 0;
> -
> - DSSDBG("Source config of VC %d", vc);
> -
> - dsi_sync_vc(dsi, vc);
> -
> - dsi_vc_enable(dsi, vc, 0);
> -
> - /* VC_BUSY */
> - if (!wait_for_bit_change(dsi, DSI_VC_CTRL(vc), 15, 0)) {
> - DSSERR("vc(%d) busy when trying to config for VP\n", vc);
> - return -EIO;
> - }
> -
> - /* SOURCE, 0 = L4, 1 = video port */
> - REG_FLD_MOD(dsi, DSI_VC_CTRL(vc), source, 1, 1);
> -
> - /* DCS_CMD_ENABLE */
> - if (dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC) {
> - bool enable = source == DSI_VC_SOURCE_VP;
> - REG_FLD_MOD(dsi, DSI_VC_CTRL(vc), enable, 30, 30);
> - }
> -
> - dsi_vc_enable(dsi, vc, 1);
> -
> - dsi->vc[vc].source = source;
> -
> - return 0;
> -}
> -
> static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int vc,
> bool enable)
> {
> @@ -2072,10 +2038,6 @@ static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int vc,
> dsi_if_enable(dsi, 1);
>
> dsi_force_tx_stop_mode_io(dsi);
> -
> - /* start the DDR clock by sending a NULL packet */
> - if (dsi->vm_timings.ddr_clk_always_on && enable)
> - dsi_vc_send_null(dsi, vc, dsi->dsidev->channel);
> }
>
> static void dsi_vc_flush_long_data(struct dsi_data *dsi, int vc)
> @@ -2270,8 +2232,6 @@ static int dsi_vc_send_long(struct dsi_data *dsi, int vc,
> return -EINVAL;
> }
>
> - dsi_vc_config_source(dsi, vc, DSI_VC_SOURCE_L4);
> -
> dsi_vc_write_long_header(dsi, vc, msg->channel, msg->type, msg->tx_len, 0);
>
> p = msg->tx_buf;
> @@ -2331,8 +2291,6 @@ static int dsi_vc_send_short(struct dsi_data *dsi, int vc,
> DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
> vc, msg->type, pkt.header[1], pkt.header[2]);
>
> - dsi_vc_config_source(dsi, vc, DSI_VC_SOURCE_L4);
> -
> if (FLD_GET(dsi_read_reg(dsi, DSI_VC_CTRL(vc)), 16, 16)) {
> DSSERR("ERROR FIFO FULL, aborting transfer\n");
> return -EINVAL;
> @@ -3351,8 +3309,6 @@ static void dsi_update_screen_dispc(struct dsi_data *dsi)
>
> DSSDBG("dsi_update_screen_dispc(%dx%d)\n", w, h);
>
> - dsi_vc_config_source(dsi, vc, DSI_VC_SOURCE_VP);
> -
> bytespp = mipi_dsi_pixel_format_to_bpp(dsi->pix_fmt) / 8;
> bytespl = w * bytespp;
> bytespf = bytespl * h;
> @@ -3522,9 +3478,7 @@ static int dsi_update_channel(struct omap_dss_device *dssdev, int vc)
>
> dsi_set_ulps_auto(dsi, false);
>
> - dsi_vc_enable_hs(dssdev, vc, !(dsi->dsidev->mode_flags & MIPI_DSI_MODE_LPM));
Why is this not needed anymore ?
> -
> - r = _dsi_send_nop(dsi, vc, dsi->dsidev->channel);
> + r = _dsi_send_nop(dsi, VC_CMD, dsi->dsidev->channel);
> if (r < 0) {
> DSSWARN("failed to send nop between frames: %d\n", r);
> goto err;
> @@ -3649,6 +3603,35 @@ static int dsi_configure_dsi_clocks(struct dsi_data *dsi)
> return 0;
> }
>
> +static void dsi_setup_dsi_vcs(struct dsi_data *dsi)
> +{
> + /* Setup VC_CMD for LP and cpu transfers */
> + REG_FLD_MOD(dsi, DSI_VC_CTRL(VC_CMD), 0, 9, 9); /* LP */
> +
> + REG_FLD_MOD(dsi, DSI_VC_CTRL(VC_CMD), 0, 1, 1); /* SOURCE_L4 */
> + dsi->vc[VC_CMD].source = DSI_VC_SOURCE_L4;
> +
> + /* Setup VC_VIDEO for HS and dispc transfers */
> + REG_FLD_MOD(dsi, DSI_VC_CTRL(VC_VIDEO), 1, 9, 9); /* HS */
> +
> + REG_FLD_MOD(dsi, DSI_VC_CTRL(VC_VIDEO), 1, 1, 1); /* SOURCE_VP */
> + dsi->vc[VC_VIDEO].source = DSI_VC_SOURCE_VP;
> +
> + if (dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC)
> + REG_FLD_MOD(dsi, DSI_VC_CTRL(VC_VIDEO), 1, 30, 30); /* DCS_CMD_ENABLE */
> +
> + dsi_vc_enable(dsi, VC_CMD, 1);
> + dsi_vc_enable(dsi, VC_VIDEO, 1);
> +
> + dsi_if_enable(dsi, 1);
> +
> + dsi_force_tx_stop_mode_io(dsi);
> +
> + /* start the DDR clock by sending a NULL packet */
> + if (dsi->vm_timings.ddr_clk_always_on)
> + dsi_vc_send_null(dsi, VC_CMD, dsi->dsidev->channel);
> +}
> +
> static int dsi_init_dsi(struct dsi_data *dsi)
> {
> int r;
> @@ -3691,13 +3674,7 @@ static int dsi_init_dsi(struct dsi_data *dsi)
> if (r)
> goto err3;
>
> - /* enable interface */
> - dsi_vc_enable(dsi, 0, 1);
> - dsi_vc_enable(dsi, 1, 1);
> - dsi_vc_enable(dsi, 2, 1);
> - dsi_vc_enable(dsi, 3, 1);
> - dsi_if_enable(dsi, 1);
> - dsi_force_tx_stop_mode_io(dsi);
> + dsi_setup_dsi_vcs(dsi);
>
> return 0;
> err3:
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2020-12-01 0:37 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 ` [PATCH v4 10/80] drm/omap: dsi: simplify read functions Tomi Valkeinen
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 [this message]
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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