From patchwork Thu Aug 4 11:07:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: YT Shen X-Patchwork-Id: 9263463 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7CA6F6048B for ; Thu, 4 Aug 2016 11:14:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6C20F28335 for ; Thu, 4 Aug 2016 11:14:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 60509283E2; Thu, 4 Aug 2016 11:14:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DE22228335 for ; Thu, 4 Aug 2016 11:14:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bVGaH-00045p-2e; Thu, 04 Aug 2016 11:13:05 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bVGXK-0000Bt-EH; Thu, 04 Aug 2016 11:10:14 +0000 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 484492381; Thu, 04 Aug 2016 19:09:38 +0800 Received: from mtkslt301.mediatek.inc (10.21.14.114) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Thu, 4 Aug 2016 19:09:36 +0800 From: YT Shen To: , Philipp Zabel Subject: [PATCH v6 08/10] drm/mediatek: update DSI sub driver flow Date: Thu, 4 Aug 2016 19:07:22 +0800 Message-ID: <1470308844-20895-9-git-send-email-yt.shen@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1470308844-20895-1-git-send-email-yt.shen@mediatek.com> References: <1470308844-20895-1-git-send-email-yt.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160804_041003_503026_05CAE098 X-CRM114-Status: GOOD ( 18.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , David Airlie , thierry.reding@gmail.com, Russell King , Mao Huang , Bibby Hsieh , YT Shen , yingjoe.chen@mediatek.com, devicetree@vger.kernel.org, Pawel Moll , Ian Campbell , CK Hu , Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , shaoming chen , linux-arm-kernel@lists.infradead.org, srv_heupstream@mediatek.com, emil.l.velikov@gmail.com, linux-kernel@vger.kernel.org, Sascha Hauer , Kumar Gala Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch update enable/disable flow of DSI module and MIPI TX module Signed-off-by: shaoming chen Signed-off-by: YT Shen --- drivers/gpu/drm/mediatek/mtk_dsi.c | 103 ++++++++++++++++++++++++++------ drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 32 +++++----- 2 files changed, 102 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 4541f59..3373019 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -95,6 +95,8 @@ #define DSI_RACK 0x84 #define RACK BIT(0) +#define DSI_MEM_CONTI 0x90 + #define DSI_PHY_LCCON 0x104 #define LC_HS_TX_EN BIT(0) #define LC_ULPM_EN BIT(1) @@ -127,6 +129,10 @@ #define CLK_HS_POST (0xff << 8) #define CLK_HS_EXIT (0xff << 16) +#define DSI_VM_CMD_CON 0x130 +#define VM_CMD_EN BIT(0) +#define TS_VFP_EN BIT(5) + #define DSI_CMDQ0 0x180 #define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0)) @@ -260,7 +266,9 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi) * mipi_ratio is mipi clk coefficient for balance the pixel clk in mipi. * we set mipi_ratio is 1.05. */ - dsi->data_rate = dsi->vm.pixelclock * 3 * 21 / (1 * 1000 * 10); + dsi->data_rate = dsi->vm.pixelclock * 12 * 21; + dsi->data_rate /= (dsi->lanes * 1000 * 10); + dev_info(dev, "set mipitx's data rate: %dMHz\n", dsi->data_rate); ret = clk_set_rate(dsi->hs_clk, dsi->data_rate * 1000000); if (ret < 0) { @@ -282,10 +290,6 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi) goto err_disable_engine_clk; } - mtk_dsi_enable(dsi); - mtk_dsi_reset_engine(dsi); - mtk_dsi_phy_timconfig(dsi); - return 0; err_disable_engine_clk: @@ -300,7 +304,7 @@ err_refcount: static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi) { mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0); - mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0); + mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, LC_ULPM_EN); } static void mtk_dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi) @@ -313,7 +317,7 @@ static void mtk_dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi) static void mtk_dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi) { mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_HS_TX_EN, 0); - mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0); + mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, LD0_ULPM_EN); } static void mtk_dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi) @@ -349,11 +353,21 @@ static void mtk_dsi_set_mode(struct mtk_dsi *dsi) if ((dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) && !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)) vid_mode = BURST_MODE; + else + vid_mode = SYNC_EVENT_MODE; } writel(vid_mode, dsi->regs + DSI_MODE_CTRL); } +static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi) +{ + writel(0x3c, dsi->regs + DSI_MEM_CONTI); + + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, VM_CMD_EN, VM_CMD_EN); + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN); +} + static void mtk_dsi_ps_control_vact(struct mtk_dsi *dsi) { struct videomode *vm = &dsi->vm; @@ -410,6 +424,9 @@ static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi) break; } + tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6; + tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3; + writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL); } @@ -488,6 +505,16 @@ static void mtk_dsi_start(struct mtk_dsi *dsi) writel(1, dsi->regs + DSI_START); } +static void mtk_dsi_stop(struct mtk_dsi *dsi) +{ + writel(0, dsi->regs + DSI_START); +} + +static void mtk_dsi_set_cmd_mode(struct mtk_dsi *dsi) +{ + writel(CMD_MODE, dsi->regs + DSI_MODE_CTRL); +} + static void mtk_dsi_set_interrupt_enable(struct mtk_dsi *dsi) { u32 inten = DSI_INT_ALL_BITS; @@ -525,6 +552,26 @@ static irqreturn_t mtk_dsi_irq(int irq, void *dev_id) return IRQ_HANDLED; } +static void mtk_dsi_switch_to_cmd_mode(struct mtk_dsi *dsi) +{ + s32 ret = 0; + unsigned long timeout = msecs_to_jiffies(500); + + dsi->irq_data &= ~VM_DONE_INT_FLAG; + + mtk_dsi_set_cmd_mode(dsi); + + ret = wait_event_interruptible_timeout(_dsi_irq_wait_queue, + dsi->irq_data & VM_DONE_INT_FLAG, + timeout); + if (ret == 0) { + dev_info(dsi->dev, "dsi wait engine idle timeout\n"); + + mtk_dsi_enable(dsi); + mtk_dsi_reset_engine(dsi); + } +} + static void mtk_dsi_poweroff(struct mtk_dsi *dsi) { if (WARN_ON(dsi->refcount == 0)) @@ -533,6 +580,17 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi) if (--dsi->refcount != 0) return; + mtk_dsi_switch_to_cmd_mode(dsi); + + if (dsi->panel) { + if (drm_panel_unprepare(dsi->panel)) { + DRM_ERROR("failed to unprepare the panel\n"); + return; + } + } + + mtk_dsi_reset_engine(dsi); + mtk_dsi_lane0_ulp_mode_enter(dsi); mtk_dsi_clk_ulp_mode_enter(dsi); @@ -551,29 +609,37 @@ static void mtk_output_dsi_enable(struct mtk_dsi *dsi) if (dsi->enabled) return; - if (dsi->panel) { - if (drm_panel_prepare(dsi->panel)) { - DRM_ERROR("failed to setup the panel\n"); - return; - } - } - ret = mtk_dsi_poweron(dsi); if (ret < 0) { DRM_ERROR("failed to power on dsi\n"); return; } + usleep_range(20000, 21000); + mtk_dsi_rxtx_control(dsi); + mtk_dsi_phy_timconfig(dsi); + mtk_dsi_ps_control_vact(dsi); + mtk_dsi_set_vm_cmd(dsi); + mtk_dsi_config_vdo_timing(dsi); + mtk_dsi_set_interrupt_enable(dsi); + mtk_dsi_enable(dsi); mtk_dsi_clk_ulp_mode_leave(dsi); mtk_dsi_lane0_ulp_mode_leave(dsi); mtk_dsi_clk_hs_mode(dsi, 0); - mtk_dsi_set_mode(dsi); - mtk_dsi_ps_control_vact(dsi); - mtk_dsi_config_vdo_timing(dsi); - mtk_dsi_set_interrupt_enable(dsi); + if (dsi->panel) { + if (drm_panel_prepare(dsi->panel)) { + DRM_ERROR("failed to prepare the panel\n"); + return; + } + + if (drm_panel_enable(dsi->panel)) { + DRM_ERROR("failed to enable the panel\n"); + return; + } + } mtk_dsi_set_mode(dsi); mtk_dsi_clk_hs_mode(dsi, 1); @@ -595,6 +661,7 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi) } } + mtk_dsi_stop(dsi); mtk_dsi_poweroff(dsi); dsi->enabled = false; diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index 19481c7..0666f15 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -168,7 +168,9 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate); - if (mipi_tx->data_rate >= 500000000) { + if (mipi_tx->data_rate > 1250000000) { + return -EINVAL; + } else if (mipi_tx->data_rate >= 500000000) { txdiv = 1; txdiv0 = 0; txdiv1 = 0; @@ -192,6 +194,10 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) return -EINVAL; } + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON, + RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN, + (8 << 4) | RG_DSI_LNT_HS_BIAS_EN); + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON, RG_DSI_VOUT_MSK | RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN, @@ -201,24 +207,18 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) usleep_range(30, 100); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON, - RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN, - (8 << 4) | RG_DSI_LNT_HS_BIAS_EN); - - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_CON, - RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN); + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_CON, + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN, + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN); mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR, RG_DSI_MPPLL_SDM_PWR_ON | RG_DSI_MPPLL_SDM_ISO_EN, RG_DSI_MPPLL_SDM_PWR_ON); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0, - RG_DSI_MPPLL_PLL_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0, - RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 | - RG_DSI_MPPLL_PREDIV, + RG_DSI_MPPLL_PREDIV | RG_DSI_MPPLL_TXDIV0 | + RG_DSI_MPPLL_TXDIV1 | RG_DSI_MPPLL_POSDIV, (txdiv0 << 3) | (txdiv1 << 5)); /* @@ -233,10 +233,12 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) 26000000); writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1, - RG_DSI_MPPLL_SDM_FRA_EN); + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON1, + RG_DSI_MPPLL_SDM_FRA_EN, + RG_DSI_MPPLL_SDM_FRA_EN); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN); + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0, + RG_DSI_MPPLL_PLL_EN, RG_DSI_MPPLL_PLL_EN); usleep_range(20, 100);