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Message-ID: <2d763625-94af-a85c-e869-95d98190d403@st.com>
Date: Wed, 10 Jun 2020 12:20:16 +0000
From: Yannick FERTRE <yannick.fertre@...com>
To: Adrian Ratiu <adrian.ratiu@...labora.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-rockchip@...ts.infradead.org"
<linux-rockchip@...ts.infradead.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"Heiko Stuebner" <heiko@...ech.de>,
Philippe CORNU <philippe.cornu@...com>,
"Jernej Skrabec" <jernej.skrabec@...l.net>,
Andrzej Hajda <a.hajda@...sung.com>,
"Jonas Karlman" <jonas@...boo.se>,
"linux-imx@....com" <linux-imx@....com>,
"kernel@...labora.com" <kernel@...labora.com>,
"linux-stm32@...md-mailman.stormreply.com"
<linux-stm32@...md-mailman.stormreply.com>,
Adrian Pop <pop.adrian61@...il.com>,
Arnaud Ferraris <arnaud.ferraris@...labora.com>
Subject: Re: [PATCH v9 03/11] drm: bridge: dw_mipi_dsi: add dsi v1.01 support
Hi Adrian,
thanks for the pach: tested on stm32mp1.
Tested-by: Yannick Fertré <yannick.fertre@...com>
On 6/9/20 7:49 PM, Adrian Ratiu wrote:
> The Synopsis MIPI DSI v1.01 host controller is quite widely used
> on platforms like i.mx6 and is not very different from the other
> versions like the 1.31/1.30 used on rockchip/stm. The protocols
> appear to be the same, only the register layout is different and
> the newer versions have new features symbolized by new registers
> so adding support for it is just a matter of defining the new
> layout and adding a couple of dsi version checks.
>
> Tested-by: Adrian Pop <pop.adrian61@...il.com>
> Tested-by: Arnaud Ferraris <arnaud.ferraris@...labora.com>
> Signed-off-by: Adrian Ratiu <adrian.ratiu@...labora.com>
> ---
> Changes since v7:
> - Minor commit msg rewording for consistency
>
> Changes since v5:
> - Fixed cfg_phy_status range from [0,0] to [0,2]
>
> New in v5.
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 125 +++++++++++++++++-
> 1 file changed, 119 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index f453df4eb5072..16fd87055e7b7 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -32,6 +32,7 @@
>
> #define HWVER_131 0x31333100 /* IP version 1.31 */
> #define HWVER_130 0x31333000 /* IP version 1.30 */
> +#define HWVER_101 0x31303000 /* IP version 1.01 */
>
> #define DSI_VERSION 0x00
> #define VERSION GENMASK(31, 8)
> @@ -100,6 +101,25 @@
> #define DSI_EDPI_CMD_SIZE 0x64
>
> #define DSI_CMD_MODE_CFG 0x68
> +
> +#define DSI_DPI_CFG 0x0c
> +#define DSI_TMR_LINE_CFG 0x28
> +#define DSI_VTIMING_CFG 0x2c
> +#define DSI_PHY_TMR_CFG_V101 0x30
> +#define DSI_PHY_IF_CFG_V101 0x58
> +#define DSI_PHY_IF_CTRL 0x5c
> +#define DSI_PHY_RSTZ_V101 0x54
> +#define DSI_PHY_STATUS_V101 0x60
> +#define DSI_PHY_TST_CTRL0_V101 0x64
> +#define DSI_GEN_HDR_V101 0x34
> +#define DSI_GEN_PLD_DATA_V101 0x38
> +#define DSI_CMD_MODE_CFG_V101 0x24
> +#define DSI_CMD_PKT_STATUS_V101 0x3c
> +#define DSI_VID_PKT_CFG 0x20
> +#define DSI_VID_MODE_CFG_V101 0x1c
> +#define DSI_TO_CNT_CFG_V101 0x40
> +#define DSI_PCKHDL_CFG_V101 0x18
> +
> #define MAX_RD_PKT_SIZE_LP BIT(24)
> #define DCS_LW_TX_LP BIT(19)
> #define DCS_SR_0P_TX_LP BIT(18)
> @@ -127,6 +147,33 @@
> GEN_SW_1P_TX_LP | \
> GEN_SW_0P_TX_LP)
>
> +#define EN_TEAR_FX_V101 BIT(14)
> +#define DCS_LW_TX_LP_V101 BIT(12)
> +#define GEN_LW_TX_LP_V101 BIT(11)
> +#define MAX_RD_PKT_SIZE_LP_V101 BIT(10)
> +#define DCS_SW_2P_TX_LP_V101 BIT(9)
> +#define DCS_SW_1P_TX_LP_V101 BIT(8)
> +#define DCS_SW_0P_TX_LP_V101 BIT(7)
> +#define GEN_SR_2P_TX_LP_V101 BIT(6)
> +#define GEN_SR_1P_TX_LP_V101 BIT(5)
> +#define GEN_SR_0P_TX_LP_V101 BIT(4)
> +#define GEN_SW_2P_TX_LP_V101 BIT(3)
> +#define GEN_SW_1P_TX_LP_V101 BIT(2)
> +#define GEN_SW_0P_TX_LP_V101 BIT(1)
> +
> +#define CMD_MODE_ALL_LP_V101 (DCS_LW_TX_LP_V101 | \
> + GEN_LW_TX_LP_V101 | \
> + MAX_RD_PKT_SIZE_LP_V101 | \
> + DCS_SW_2P_TX_LP_V101 | \
> + DCS_SW_1P_TX_LP_V101 | \
> + DCS_SW_0P_TX_LP_V101 | \
> + GEN_SR_2P_TX_LP_V101 | \
> + GEN_SR_1P_TX_LP_V101 | \
> + GEN_SR_0P_TX_LP_V101 | \
> + GEN_SW_2P_TX_LP_V101 | \
> + GEN_SW_1P_TX_LP_V101 | \
> + GEN_SW_0P_TX_LP_V101)
> +
> #define DSI_GEN_HDR 0x6c
> #define DSI_GEN_PLD_DATA 0x70
>
> @@ -165,6 +212,11 @@
> #define DSI_INT_MSK0 0xc4
> #define DSI_INT_MSK1 0xc8
>
> +#define DSI_ERROR_ST0_V101 0x44
> +#define DSI_ERROR_ST1_V101 0x48
> +#define DSI_ERROR_MSK0_V101 0x4c
> +#define DSI_ERROR_MSK1_V101 0x50
> +
> #define DSI_PHY_TMR_RD_CFG 0xf4
>
> #define PHY_STATUS_TIMEOUT_US 10000
> @@ -359,6 +411,49 @@ static const struct dw_mipi_dsi_variant dw_mipi_dsi_v130_v131_layout = {
> .cfg_gen_payload = REG_FIELD(DSI_GEN_PLD_DATA, 0, 31),
> };
>
> +static const struct dw_mipi_dsi_variant dw_mipi_dsi_v101_layout = {
> + .cfg_dpi_vid = REG_FIELD(DSI_DPI_CFG, 0, 1),
> + .cfg_dpi_color_coding = REG_FIELD(DSI_DPI_CFG, 2, 4),
> + .cfg_dpi_18loosely_en = REG_FIELD(DSI_DPI_CFG, 10, 10),
> + .cfg_dpi_vsync_active_low = REG_FIELD(DSI_DPI_CFG, 6, 6),
> + .cfg_dpi_hsync_active_low = REG_FIELD(DSI_DPI_CFG, 7, 7),
> + .cfg_cmd_mode_en = REG_FIELD(DSI_CMD_MODE_CFG_V101, 0, 0),
> + .cfg_cmd_mode_all_lp_en = REG_FIELD(DSI_CMD_MODE_CFG_V101, 1, 12),
> + .cfg_cmd_mode_ack_rqst_en = REG_FIELD(DSI_CMD_MODE_CFG_V101, 13, 13),
> + .cfg_cmd_pkt_status = REG_FIELD(DSI_CMD_PKT_STATUS_V101, 0, 14),
> + .cfg_vid_mode_en = REG_FIELD(DSI_VID_MODE_CFG_V101, 0, 0),
> + .cfg_vid_mode_type = REG_FIELD(DSI_VID_MODE_CFG_V101, 1, 2),
> + .cfg_vid_mode_low_power = REG_FIELD(DSI_VID_MODE_CFG_V101, 3, 8),
> + .cfg_vid_pkt_size = REG_FIELD(DSI_VID_PKT_CFG, 0, 10),
> + .cfg_vid_hsa_time = REG_FIELD(DSI_TMR_LINE_CFG, 0, 8),
> + .cfg_vid_hbp_time = REG_FIELD(DSI_TMR_LINE_CFG, 9, 17),
> + .cfg_vid_hline_time = REG_FIELD(DSI_TMR_LINE_CFG, 18, 31),
> + .cfg_vid_vsa_time = REG_FIELD(DSI_VTIMING_CFG, 0, 3),
> + .cfg_vid_vbp_time = REG_FIELD(DSI_VTIMING_CFG, 4, 9),
> + .cfg_vid_vfp_time = REG_FIELD(DSI_VTIMING_CFG, 10, 15),
> + .cfg_vid_vactive_time = REG_FIELD(DSI_VTIMING_CFG, 16, 26),
> + .cfg_phy_txrequestclkhs = REG_FIELD(DSI_PHY_IF_CTRL, 0, 0),
> + .cfg_phy_bta_time = REG_FIELD(DSI_PHY_TMR_CFG_V101, 0, 11),
> + .cfg_phy_lp2hs_time = REG_FIELD(DSI_PHY_TMR_CFG_V101, 12, 19),
> + .cfg_phy_hs2lp_time = REG_FIELD(DSI_PHY_TMR_CFG_V101, 20, 27),
> + .cfg_phy_testclr = REG_FIELD(DSI_PHY_TST_CTRL0_V101, 0, 0),
> + .cfg_phy_unshutdownz = REG_FIELD(DSI_PHY_RSTZ_V101, 0, 0),
> + .cfg_phy_unrstz = REG_FIELD(DSI_PHY_RSTZ_V101, 1, 1),
> + .cfg_phy_enableclk = REG_FIELD(DSI_PHY_RSTZ_V101, 2, 2),
> + .cfg_phy_nlanes = REG_FIELD(DSI_PHY_IF_CFG_V101, 0, 1),
> + .cfg_phy_stop_wait_time = REG_FIELD(DSI_PHY_IF_CFG_V101, 2, 9),
> + .cfg_phy_status = REG_FIELD(DSI_PHY_STATUS_V101, 0, 2),
> + .cfg_pckhdl_cfg = REG_FIELD(DSI_PCKHDL_CFG_V101, 0, 4),
> + .cfg_hstx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG_V101, 0, 15),
> + .cfg_lprx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG_V101, 16, 31),
> + .cfg_int_stat0 = REG_FIELD(DSI_ERROR_ST0_V101, 0, 20),
> + .cfg_int_stat1 = REG_FIELD(DSI_ERROR_ST1_V101, 0, 17),
> + .cfg_int_mask0 = REG_FIELD(DSI_ERROR_MSK0_V101, 0, 20),
> + .cfg_int_mask1 = REG_FIELD(DSI_ERROR_MSK1_V101, 0, 17),
> + .cfg_gen_hdr = REG_FIELD(DSI_GEN_HDR_V101, 0, 31),
> + .cfg_gen_payload = REG_FIELD(DSI_GEN_PLD_DATA_V101, 0, 31),
> +};
> +
> /*
> * Check if either a link to a master or slave is present
> */
> @@ -466,6 +561,9 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
> case HWVER_131:
> cmd_mode_lp = CMD_MODE_ALL_LP;
> break;
> + case HWVER_101:
> + cmd_mode_lp = CMD_MODE_ALL_LP_V101;
> + break;
> }
>
> if (msg->flags & MIPI_DSI_MSG_REQ_ACK)
> @@ -644,7 +742,7 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> VID_MODE_TYPE_NON_BURST_SYNC_EVENTS);
>
> #ifdef CONFIG_DEBUG_FS
> - if (dsi->vpg) {
> + if (dsi->hw_version > HWVER_101 && dsi->vpg) {
> regmap_field_write(dsi->field_vid_mode_vpg_en, 1);
> regmap_field_write(dsi->field_vid_mode_vpg_horiz,
> dsi->vpg_horizontal ? 1 : 0);
> @@ -662,9 +760,15 @@ static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi,
>
> dw_mipi_dsi_video_mode_config(dsi);
>
> + if (dsi->hw_version == HWVER_101)
> + regmap_field_write(dsi->field_vid_mode_en, 1);
> +
> regmap_field_write(dsi->field_phy_txrequestclkhs, 1);
> } else {
> regmap_field_write(dsi->field_cmd_mode_en, 1);
> +
> + if (dsi->hw_version == HWVER_101)
> + regmap_field_write(dsi->field_vid_mode_en, 0);
> }
>
> regmap_write(dsi->regs, DSI_PWR_UP, POWERUP);
> @@ -856,9 +960,13 @@ static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi)
> regmap_field_write(dsi->field_phy_lp2hs_time, timing.data_lp2hs);
> regmap_field_write(dsi->field_phy_hs2lp_time, timing.data_hs2lp);
>
> - regmap_field_write(dsi->field_phy_max_rd_time, 10000);
> - regmap_field_write(dsi->field_phy_clkhs2lp_time, timing.clk_hs2lp);
> - regmap_field_write(dsi->field_phy_clklp2hs_time, timing.clk_lp2hs);
> + if (dsi->hw_version > HWVER_101) {
> + regmap_field_write(dsi->field_phy_max_rd_time, 10000);
> + regmap_field_write(dsi->field_phy_clkhs2lp_time,
> + timing.clk_hs2lp);
> + regmap_field_write(dsi->field_phy_clklp2hs_time,
> + timing.clk_lp2hs);
> + }
> }
>
> static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi)
> @@ -879,7 +987,8 @@ static void dw_mipi_dsi_dphy_init(struct dw_mipi_dsi *dsi)
> regmap_field_write(dsi->field_phy_unrstz, 0);
> regmap_field_write(dsi->field_phy_unshutdownz, 0);
>
> - regmap_field_write(dsi->field_phy_forcepll, 0);
> + if (dsi->hw_version > HWVER_101)
> + regmap_field_write(dsi->field_phy_forcepll, 0);
>
> regmap_field_write(dsi->field_phy_testclr, 0);
> regmap_field_write(dsi->field_phy_testclr, 1);
> @@ -895,7 +1004,8 @@ static void dw_mipi_dsi_dphy_enable(struct dw_mipi_dsi *dsi)
> regmap_field_write(dsi->field_phy_unrstz, 1);
> regmap_field_write(dsi->field_phy_unshutdownz, 1);
>
> - regmap_field_write(dsi->field_phy_forcepll, 1);
> + if (dsi->hw_version > HWVER_101)
> + regmap_field_write(dsi->field_phy_forcepll, 1);
>
> ret = regmap_field_read_poll_timeout(dsi->field_phy_status,
> val, val & PHY_LOCK,
> @@ -1132,6 +1242,9 @@ static int dw_mipi_dsi_regmap_fields_init(struct dw_mipi_dsi *dsi)
> case HWVER_131:
> variant = &dw_mipi_dsi_v130_v131_layout;
> break;
> + case HWVER_101:
> + variant = &dw_mipi_dsi_v101_layout;
> + break;
> default:
> DRM_ERROR("Unrecognized DSI host controller HW revision\n");
> return -ENODEV;
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