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Fri, 30 Aug 2024 16:34:58 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= , Conor Dooley Subject: [PATCH v2 1/8] dt-bindings: media: renesas,csi2: Add binding for V4M Date: Fri, 30 Aug 2024 22:30:57 +0200 Message-ID: <20240830203104.3479124-2-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Document support for the CSI-2 module in the Renesas V4M (r8a779h0) SoC. Signed-off-by: Niklas Söderlund Acked-by: Conor Dooley Reviewed-by: Geert Uytterhoeven --- * changes since v1 - group with driver changes. --- Documentation/devicetree/bindings/media/renesas,csi2.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/media/renesas,csi2.yaml b/Documentation/devicetree/bindings/media/renesas,csi2.yaml index 977ab188d654..80b77875874d 100644 --- a/Documentation/devicetree/bindings/media/renesas,csi2.yaml +++ b/Documentation/devicetree/bindings/media/renesas,csi2.yaml @@ -32,6 +32,7 @@ properties: - renesas,r8a77990-csi2 # R-Car E3 - renesas,r8a779a0-csi2 # R-Car V3U - renesas,r8a779g0-csi2 # R-Car V4H + - renesas,r8a779h0-csi2 # R-Car V4M reg: maxItems: 1 From patchwork Fri Aug 30 20:30:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 824287 Received: from fout7-smtp.messagingengine.com (fout7-smtp.messagingengine.com [103.168.172.150]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DFC81C0DC5; 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Fri, 30 Aug 2024 16:35:00 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 2/8] media: rcar-csi2: Correct field size for PHTW writes Date: Fri, 30 Aug 2024 22:30:58 +0200 Message-ID: <20240830203104.3479124-3-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The data and code written thru the Test Interface Write Register (PHTW) register are 8-bit wide, change the datatype used to reflect this. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index c419ddb4c5a2..932826ee0961 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -238,13 +238,13 @@ static const struct rcsi2_cphy_setting cphy_setting_table_r8a779g0[] = { }; struct phtw_value { - u16 data; - u16 code; + u8 data; + u8 code; }; struct rcsi2_mbps_reg { u16 mbps; - u16 reg; + u8 reg; }; static const struct rcsi2_mbps_reg phtw_mbps_v3u[] = { @@ -1451,7 +1451,7 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv) * NOTE: Magic values are from the datasheet and lack documentation. */ -static int rcsi2_phtw_write(struct rcar_csi2 *priv, u16 data, u16 code) +static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) { unsigned int timeout; @@ -1488,7 +1488,7 @@ static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, } static int rcsi2_phtw_write_mbps(struct rcar_csi2 *priv, unsigned int mbps, - const struct rcsi2_mbps_reg *values, u16 code) + const struct rcsi2_mbps_reg *values, u8 code) { const struct rcsi2_mbps_reg *value; 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Fri, 30 Aug 2024 16:35:02 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 3/8] media: rcar-csi2: Allow writing any code and data value to PHTW Date: Fri, 30 Aug 2024 22:30:59 +0200 Message-ID: <20240830203104.3479124-4-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The helper to write an array of code and data values to the PHY Test Interface Write Register (PHTW) register uses the case where both code and data are zero as an exit condition. This prevents writing data = 0 and code = 0 to the register. Up until now this has been OK as no such combination where needed, and it was a convenient exit condition. In future writing data = 0 and code = 0 to the PHTW register will be needed. Avoid using an exit condition when writing an array of PHTW values and instead pass the length of the array to the helper. This allows any combination of code and data to be written. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 29 ++++++++-------------- 1 file changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 932826ee0961..5ab19f94fcde 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -1473,13 +1473,13 @@ static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) } static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, - const struct phtw_value *values) + const struct phtw_value *values, + unsigned int size) { - const struct phtw_value *value; int ret; - for (value = values; value->data || value->code; value++) { - ret = rcsi2_phtw_write(priv, value->data, value->code); + for (unsigned int i = 0; i < size; i++) { + ret = rcsi2_phtw_write(priv, values[i].data, values[i].code); if (ret) return ret; } @@ -1520,7 +1520,6 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, { .data = 0x11, .code = 0xe4 }, { .data = 0x01, .code = 0xe5 }, { .data = 0x10, .code = 0x04 }, - { /* sentinel */ }, }; static const struct phtw_value step2[] = { @@ -1529,12 +1528,11 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, { .data = 0x4b, .code = 0xac }, { .data = 0x03, .code = 0x00 }, { .data = 0x80, .code = 0x07 }, - { /* sentinel */ }, }; int ret; - ret = rcsi2_phtw_write_array(priv, step1); + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); if (ret) return ret; @@ -1549,7 +1547,7 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, return ret; } - return rcsi2_phtw_write_array(priv, step2); + return rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2)); } static int rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, unsigned int mbps) @@ -1575,10 +1573,9 @@ static int rcsi2_phy_post_init_v3m_e3(struct rcar_csi2 *priv) { .data = 0xee, .code = 0x54 }, { .data = 0xee, .code = 0x84 }, { .data = 0xee, .code = 0x94 }, - { /* sentinel */ }, }; - return rcsi2_phtw_write_array(priv, step1); + return rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); } static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, @@ -1587,20 +1584,17 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, /* In case of 1500Mbps or less */ static const struct phtw_value step1[] = { { .data = 0xcc, .code = 0xe2 }, - { /* sentinel */ }, }; static const struct phtw_value step2[] = { { .data = 0x01, .code = 0xe3 }, { .data = 0x11, .code = 0xe4 }, { .data = 0x01, .code = 0xe5 }, - { /* sentinel */ }, }; /* In case of 1500Mbps or less */ static const struct phtw_value step3[] = { { .data = 0x38, .code = 0x08 }, - { /* sentinel */ }, }; static const struct phtw_value step4[] = { @@ -1608,29 +1602,28 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, { .data = 0x4b, .code = 0xac }, { .data = 0x03, .code = 0x00 }, { .data = 0x80, .code = 0x07 }, - { /* sentinel */ }, }; int ret; if (mbps != 0 && mbps <= 1500) - ret = rcsi2_phtw_write_array(priv, step1); + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); else ret = rcsi2_phtw_write_mbps(priv, mbps, phtw_mbps_v3u, 0xe2); if (ret) return ret; - ret = rcsi2_phtw_write_array(priv, step2); + ret = rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2)); if (ret) return ret; if (mbps != 0 && mbps <= 1500) { - ret = rcsi2_phtw_write_array(priv, step3); + ret = rcsi2_phtw_write_array(priv, step3, ARRAY_SIZE(step3)); if (ret) return ret; } - ret = rcsi2_phtw_write_array(priv, step4); + ret = rcsi2_phtw_write_array(priv, step4, ARRAY_SIZE(step4)); if (ret) return ret; From patchwork Fri Aug 30 20:31:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 824286 Received: from fout7-smtp.messagingengine.com (fout7-smtp.messagingengine.com [103.168.172.150]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A44801BF33D; Fri, 30 Aug 2024 20:35:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Fri, 30 Aug 2024 16:35:04 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 4/8] media: rcar-csi2: Abstract PHTW and PHYPLL register offsets Date: Fri, 30 Aug 2024 22:31:00 +0200 Message-ID: <20240830203104.3479124-5-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Most of the registers used on the R-Car V4M CSI-2 IP are shared with the devices already supported by the rcar-csi2 driver. Two registers which function and layout are the same are however found on different offsets. Prepare for adding support for R-Car V4M by storing the offset to these two registers offsets in the device information structured. This way the code, which is shared between the devices, can be reused when V4M support is added. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 27 +++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 5ab19f94fcde..4e85c47817a1 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -584,7 +584,13 @@ enum rcar_csi2_pads { NR_OF_RCAR_CSI2_PAD, }; +struct rcsi2_register_layout { + unsigned int phtw; + unsigned int phypll; +}; + struct rcar_csi2_info { + const struct rcsi2_register_layout *regs; int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps); int (*phy_post_init)(struct rcar_csi2 *priv); int (*start_receiver)(struct rcar_csi2 *priv, @@ -730,7 +736,7 @@ static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps) ((mbps - hsfreq_prev->mbps) <= (hsfreq->mbps - mbps))) hsfreq = hsfreq_prev; - rcsi2_write(priv, PHYPLL_REG, PHYPLL_HSFREQRANGE(hsfreq->reg)); + rcsi2_write(priv, priv->info->regs->phypll, PHYPLL_HSFREQRANGE(hsfreq->reg)); return 0; } @@ -1455,13 +1461,13 @@ static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) { unsigned int timeout; - rcsi2_write(priv, PHTW_REG, + rcsi2_write(priv, priv->info->regs->phtw, PHTW_DWEN | PHTW_TESTDIN_DATA(data) | PHTW_CWEN | PHTW_TESTDIN_CODE(code)); /* Wait for DWEN and CWEN to be cleared by hardware. */ for (timeout = 0; timeout <= 20; timeout++) { - if (!(rcsi2_read(priv, PHTW_REG) & (PHTW_DWEN | PHTW_CWEN))) + if (!(rcsi2_read(priv, priv->info->regs->phtw) & (PHTW_DWEN | PHTW_CWEN))) return 0; usleep_range(1000, 2000); @@ -1707,7 +1713,13 @@ static int rcsi2_probe_resources(struct rcar_csi2 *priv, return PTR_ERR_OR_ZERO(priv->rstc); } +static const struct rcsi2_register_layout rcsi2_registers_gen3 = { + .phtw = PHTW_REG, + .phypll = PHYPLL_REG, +}; + static const struct rcar_csi2_info rcar_csi2_info_r8a7795 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_h3_v3h_m3n, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, @@ -1719,6 +1731,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7795 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a7795es2 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_h3es2, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, @@ -1730,6 +1743,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7795es2 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a7796 = { + .regs = &rcsi2_registers_gen3, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, .hsfreqrange = hsfreqrange_m3w, @@ -1738,6 +1752,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7796 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a77961 = { + .regs = &rcsi2_registers_gen3, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, .hsfreqrange = hsfreqrange_m3w, @@ -1746,6 +1761,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77961 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a77965 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_h3_v3h_m3n, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, @@ -1757,6 +1773,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77965 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a77970 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_v3m_e3, .phy_post_init = rcsi2_phy_post_init_v3m_e3, .start_receiver = rcsi2_start_receiver_gen3, @@ -1766,6 +1783,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77970 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a77980 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_h3_v3h_m3n, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, @@ -1776,6 +1794,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77980 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a77990 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_v3m_e3, .phy_post_init = rcsi2_phy_post_init_v3m_e3, .start_receiver = rcsi2_start_receiver_gen3, @@ -1785,6 +1804,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77990 = { }; static const struct rcar_csi2_info rcar_csi2_info_r8a779a0 = { + .regs = &rcsi2_registers_gen3, .init_phtw = rcsi2_init_phtw_v3u, .start_receiver = rcsi2_start_receiver_gen3, .enter_standby = rcsi2_enter_standby_gen3, @@ -1796,6 +1816,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a779a0 = { }; 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Fri, 30 Aug 2024 16:35:06 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 5/8] media: rcar-csi2: Add helper to lookup mbps settings Date: Fri, 30 Aug 2024 22:31:01 +0200 Message-ID: <20240830203104.3479124-6-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The structure mapping a configuration information to a particular mpbs setting needs to be extended with more information to support future SoCs. Before it is extended reduce code duplication by creating a helper to lookup information from an array of mbps setting, the lookup code has already been copied to two speared locations. While at it rename the structure to make it clear it contains information related to a mbps setting, not just a single register value. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 90 +++++++++++----------- 1 file changed, 45 insertions(+), 45 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 4e85c47817a1..0c65c6aa7260 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -242,12 +242,12 @@ struct phtw_value { u8 code; }; -struct rcsi2_mbps_reg { +struct rcsi2_mbps_info { u16 mbps; u8 reg; }; -static const struct rcsi2_mbps_reg phtw_mbps_v3u[] = { +static const struct rcsi2_mbps_info phtw_mbps_v3u[] = { { .mbps = 1500, .reg = 0xcc }, { .mbps = 1550, .reg = 0x1d }, { .mbps = 1600, .reg = 0x27 }, @@ -272,7 +272,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_v3u[] = { { /* sentinel */ }, }; -static const struct rcsi2_mbps_reg phtw_mbps_h3_v3h_m3n[] = { +static const struct rcsi2_mbps_info phtw_mbps_h3_v3h_m3n[] = { { .mbps = 80, .reg = 0x86 }, { .mbps = 90, .reg = 0x86 }, { .mbps = 100, .reg = 0x87 }, @@ -292,7 +292,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_h3_v3h_m3n[] = { { /* sentinel */ }, }; -static const struct rcsi2_mbps_reg phtw_mbps_v3m_e3[] = { +static const struct rcsi2_mbps_info phtw_mbps_v3m_e3[] = { { .mbps = 80, .reg = 0x00 }, { .mbps = 90, .reg = 0x20 }, { .mbps = 100, .reg = 0x40 }, @@ -336,7 +336,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_v3m_e3[] = { #define PHYPLL_REG 0x68 #define PHYPLL_HSFREQRANGE(n) ((n) << 16) -static const struct rcsi2_mbps_reg hsfreqrange_v3u[] = { +static const struct rcsi2_mbps_info hsfreqrange_v3u[] = { { .mbps = 80, .reg = 0x00 }, { .mbps = 90, .reg = 0x10 }, { .mbps = 100, .reg = 0x20 }, @@ -402,7 +402,7 @@ static const struct rcsi2_mbps_reg hsfreqrange_v3u[] = { { /* sentinel */ }, }; -static const struct rcsi2_mbps_reg hsfreqrange_h3_v3h_m3n[] = { +static const struct rcsi2_mbps_info hsfreqrange_h3_v3h_m3n[] = { { .mbps = 80, .reg = 0x00 }, { .mbps = 90, .reg = 0x10 }, { .mbps = 100, .reg = 0x20 }, @@ -449,7 +449,7 @@ static const struct rcsi2_mbps_reg hsfreqrange_h3_v3h_m3n[] = { { /* sentinel */ }, }; -static const struct rcsi2_mbps_reg hsfreqrange_m3w[] = { +static const struct rcsi2_mbps_info hsfreqrange_m3w[] = { { .mbps = 80, .reg = 0x00 }, { .mbps = 90, .reg = 0x10 }, { .mbps = 100, .reg = 0x20 }, @@ -596,7 +596,7 @@ struct rcar_csi2_info { int (*start_receiver)(struct rcar_csi2 *priv, struct v4l2_subdev_state *state); void (*enter_standby)(struct rcar_csi2 *priv); - const struct rcsi2_mbps_reg *hsfreqrange; + const struct rcsi2_mbps_info *hsfreqrange; unsigned int csi0clkfreqrange; unsigned int num_channels; bool clear_ulps; @@ -662,6 +662,34 @@ static void rcsi2_write16(struct rcar_csi2 *priv, unsigned int reg, u16 data) iowrite16(data, priv->base + reg); } +static const struct rcsi2_mbps_info * +rcsi2_mbps_to_info(struct rcar_csi2 *priv, + const struct rcsi2_mbps_info *infotable, unsigned int mbps) +{ + const struct rcsi2_mbps_info *info; + const struct rcsi2_mbps_info *prev = NULL; + + if (mbps < infotable->mbps) + dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps", + mbps, infotable->mbps); + + for (info = infotable; info->mbps != 0; info++) { + if (info->mbps >= mbps) + break; + prev = info; + } + + if (!info->mbps) { + dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps); + return NULL; + } + + if (prev && ((mbps - prev->mbps) <= (info->mbps - mbps))) + info = prev; + + return info; +} + static void rcsi2_enter_standby_gen3(struct rcar_csi2 *priv) { rcsi2_write(priv, PHYCNT_REG, 0); @@ -714,29 +742,13 @@ static int rcsi2_wait_phy_start(struct rcar_csi2 *priv, static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps) { - const struct rcsi2_mbps_reg *hsfreq; - const struct rcsi2_mbps_reg *hsfreq_prev = NULL; + const struct rcsi2_mbps_info *info; - if (mbps < priv->info->hsfreqrange->mbps) - dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps", - mbps, priv->info->hsfreqrange->mbps); - - for (hsfreq = priv->info->hsfreqrange; hsfreq->mbps != 0; hsfreq++) { - if (hsfreq->mbps >= mbps) - break; - hsfreq_prev = hsfreq; - } - - if (!hsfreq->mbps) { - dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps); + info = rcsi2_mbps_to_info(priv, priv->info->hsfreqrange, mbps); + if (!info) return -ERANGE; - } - if (hsfreq_prev && - ((mbps - hsfreq_prev->mbps) <= (hsfreq->mbps - mbps))) - hsfreq = hsfreq_prev; - - rcsi2_write(priv, priv->info->regs->phypll, PHYPLL_HSFREQRANGE(hsfreq->reg)); + rcsi2_write(priv, priv->info->regs->phypll, PHYPLL_HSFREQRANGE(info->reg)); return 0; } @@ -1494,27 +1506,15 @@ static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, } static int rcsi2_phtw_write_mbps(struct rcar_csi2 *priv, unsigned int mbps, - const struct rcsi2_mbps_reg *values, u8 code) + const struct rcsi2_mbps_info *values, u8 code) { - const struct rcsi2_mbps_reg *value; - const struct rcsi2_mbps_reg *prev_value = NULL; + const struct rcsi2_mbps_info *info; - for (value = values; value->mbps; value++) { - if (value->mbps >= mbps) - break; - prev_value = value; - } - - if (prev_value && - ((mbps - prev_value->mbps) <= (value->mbps - mbps))) - value = prev_value; - - if (!value->mbps) { - dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps); + info = rcsi2_mbps_to_info(priv, values, mbps); + if (!info) return -ERANGE; - } - return rcsi2_phtw_write(priv, value->reg, code); + return rcsi2_phtw_write(priv, info->reg, code); } static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, From patchwork Fri Aug 30 20:31:02 2024 Content-Type: text/plain; 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Fri, 30 Aug 2024 16:35:08 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 6/8] media: rcar-csi2: Move PHTW write helpers Date: Fri, 30 Aug 2024 22:31:02 +0200 Message-ID: <20240830203104.3479124-7-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Prepare for V4M support by moving the PHTW write helpers to the generic write helpers. This is needed as adding V4M support will involve interact with the PHTW register from code that are logically grouped with similar code in such a way that forward declarations of these helpers would otherwise be needed. The functions are moved verbatim. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 72 +++++++++++----------- 1 file changed, 36 insertions(+), 36 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 0c65c6aa7260..72fcb6ac840b 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -662,6 +662,42 @@ static void rcsi2_write16(struct rcar_csi2 *priv, unsigned int reg, u16 data) iowrite16(data, priv->base + reg); } +static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) +{ + unsigned int timeout; + + rcsi2_write(priv, priv->info->regs->phtw, + PHTW_DWEN | PHTW_TESTDIN_DATA(data) | + PHTW_CWEN | PHTW_TESTDIN_CODE(code)); + + /* Wait for DWEN and CWEN to be cleared by hardware. */ + for (timeout = 0; timeout <= 20; timeout++) { + if (!(rcsi2_read(priv, priv->info->regs->phtw) & (PHTW_DWEN | PHTW_CWEN))) + return 0; + + usleep_range(1000, 2000); + } + + dev_err(priv->dev, "Timeout waiting for PHTW_DWEN and/or PHTW_CWEN\n"); + + return -ETIMEDOUT; +} + +static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, + const struct phtw_value *values, + unsigned int size) +{ + int ret; + + for (unsigned int i = 0; i < size; i++) { + ret = rcsi2_phtw_write(priv, values[i].data, values[i].code); + if (ret) + return ret; + } + + return 0; +} + static const struct rcsi2_mbps_info * rcsi2_mbps_to_info(struct rcar_csi2 *priv, const struct rcsi2_mbps_info *infotable, unsigned int mbps) @@ -1469,42 +1505,6 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv) * NOTE: Magic values are from the datasheet and lack documentation. */ -static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) -{ - unsigned int timeout; - - rcsi2_write(priv, priv->info->regs->phtw, - PHTW_DWEN | PHTW_TESTDIN_DATA(data) | - PHTW_CWEN | PHTW_TESTDIN_CODE(code)); - - /* Wait for DWEN and CWEN to be cleared by hardware. */ - for (timeout = 0; timeout <= 20; timeout++) { - if (!(rcsi2_read(priv, priv->info->regs->phtw) & (PHTW_DWEN | PHTW_CWEN))) - return 0; - - usleep_range(1000, 2000); - } - - dev_err(priv->dev, "Timeout waiting for PHTW_DWEN and/or PHTW_CWEN\n"); - - return -ETIMEDOUT; -} - -static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, - const struct phtw_value *values, - unsigned int size) -{ - int ret; - - for (unsigned int i = 0; i < size; i++) { - ret = rcsi2_phtw_write(priv, values[i].data, values[i].code); - if (ret) - return ret; - } - - return 0; -} - static int rcsi2_phtw_write_mbps(struct rcar_csi2 *priv, unsigned int mbps, const struct rcsi2_mbps_info *values, u8 code) { From patchwork Fri Aug 30 20:31:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 824517 Received: from fhigh3-smtp.messagingengine.com (fhigh3-smtp.messagingengine.com [103.168.172.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 685B21C173B; 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Fri, 30 Aug 2024 16:35:09 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 7/8] media: rcar-csi2: Add documentation for PHY_EN and PHY_MODE registers Date: Fri, 30 Aug 2024 22:31:03 +0200 Message-ID: <20240830203104.3479124-8-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Later datasheets add documentation for two magic value used for V4H support. The same registers will also be used for V4M support, document them. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 72fcb6ac840b..386037a13786 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -135,13 +135,23 @@ struct rcar_csi2; /* V4H BASE registers */ #define V4H_N_LANES_REG 0x0004 #define V4H_CSI2_RESETN_REG 0x0008 + #define V4H_PHY_MODE_REG 0x001c +#define V4H_PHY_MODE_DPHY 0 +#define V4H_PHY_MODE_CPHY 1 + #define V4H_PHY_SHUTDOWNZ_REG 0x0040 #define V4H_DPHY_RSTZ_REG 0x0044 #define V4H_FLDC_REG 0x0804 #define V4H_FLDD_REG 0x0808 #define V4H_IDIC_REG 0x0810 + #define V4H_PHY_EN_REG 0x2000 +#define V4H_PHY_EN_ENABLE_3 BIT(7) +#define V4H_PHY_EN_ENABLE_2 BIT(6) +#define V4H_PHY_EN_ENABLE_1 BIT(5) +#define V4H_PHY_EN_ENABLE_0 BIT(4) +#define V4H_PHY_EN_ENABLE_CLK BIT(0) #define V4H_ST_PHYST_REG 0x2814 #define V4H_ST_PHYST_ST_PHY_READY BIT(31) @@ -1146,11 +1156,11 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv, rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, 0); /* PHY static setting */ - rcsi2_write(priv, V4H_PHY_EN_REG, BIT(0)); + rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK); rcsi2_write(priv, V4H_FLDC_REG, 0); rcsi2_write(priv, V4H_FLDD_REG, 0); rcsi2_write(priv, V4H_IDIC_REG, 0); - rcsi2_write(priv, V4H_PHY_MODE_REG, BIT(0)); + rcsi2_write(priv, V4H_PHY_MODE_REG, V4H_PHY_MODE_CPHY); rcsi2_write(priv, V4H_N_LANES_REG, lanes - 1); /* Reset CSI2 */ From patchwork Fri Aug 30 20:31:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 824284 Received: from fhigh3-smtp.messagingengine.com (fhigh3-smtp.messagingengine.com [103.168.172.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 673D61C1756; Fri, 30 Aug 2024 20:35:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.168.172.154 ARC-Seal: i=1; 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Fri, 30 Aug 2024 16:35:11 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Laurent Pinchart , Sakari Ailus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 8/8] media: rcar-csi2: Add support for R-Car V4M Date: Fri, 30 Aug 2024 22:31:04 +0200 Message-ID: <20240830203104.3479124-9-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> References: <20240830203104.3479124-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The V4M is the second Gen4 device that is enabled in the rcar-csi2 driver. There is much overlap with the already supported V4H device. The registers that where new on Gen4 and where added with the V4H prefix are retained and only new registers unique to the V4M are added with the new V4M prefix. This follows the style for when V4H was added which had an overlap with Gen3 registers. The V4M CSI-2 receiver supports D-PHY mode only, either in 1-, 2- or 4-lane configuration. The datasheets do not document lane swapping and is left out for now. While the V4M only supports D-PHY the configuration for it is added in such a way that it can be reused for V4H which supports both C-PHY and D-PHY. No known SoC exists to test the D-PHY configuration on V4H so it's not wired-up. Signed-off-by: Niklas Söderlund --- * Changes since v1 - Update to use subdevice active state as this have changed upstream. --- drivers/media/platform/renesas/rcar-csi2.c | 294 +++++++++++++++++++++ 1 file changed, 294 insertions(+) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 386037a13786..472e62306832 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -247,6 +247,25 @@ static const struct rcsi2_cphy_setting cphy_setting_table_r8a779g0[] = { { /* sentinel */ }, }; +/* V4M registers */ +#define V4M_OVR1_REG 0x0848 +#define V4M_OVR1_FORCERXMODE_3 BIT(12) +#define V4M_OVR1_FORCERXMODE_2 BIT(11) +#define V4M_OVR1_FORCERXMODE_1 BIT(10) +#define V4M_OVR1_FORCERXMODE_0 BIT(9) + +#define V4M_FRXM_REG 0x2004 +#define V4M_FRXM_FORCERXMODE_3 BIT(3) +#define V4M_FRXM_FORCERXMODE_2 BIT(2) +#define V4M_FRXM_FORCERXMODE_1 BIT(1) +#define V4M_FRXM_FORCERXMODE_0 BIT(0) + +#define V4M_PHYPLL_REG 0x02050 +#define V4M_CSI0CLKFCPR_REG 0x02054 +#define V4M_PHTW_REG 0x02060 +#define V4M_PHTR_REG 0x02064 +#define V4M_PHTC_REG 0x02068 + struct phtw_value { u8 data; u8 code; @@ -255,6 +274,7 @@ struct phtw_value { struct rcsi2_mbps_info { u16 mbps; u8 reg; + u16 osc_freq; /* V4M */ }; static const struct rcsi2_mbps_info phtw_mbps_v3u[] = { @@ -506,6 +526,73 @@ static const struct rcsi2_mbps_info hsfreqrange_m3w[] = { { /* sentinel */ }, }; +static const struct rcsi2_mbps_info hsfreqrange_v4m[] = { + { .mbps = 80, .reg = 0x00, .osc_freq = 0x01a9 }, + { .mbps = 90, .reg = 0x10, .osc_freq = 0x01a9 }, + { .mbps = 100, .reg = 0x20, .osc_freq = 0x01a9 }, + { .mbps = 110, .reg = 0x30, .osc_freq = 0x01a9 }, + { .mbps = 120, .reg = 0x01, .osc_freq = 0x01a9 }, + { .mbps = 130, .reg = 0x11, .osc_freq = 0x01a9 }, + { .mbps = 140, .reg = 0x21, .osc_freq = 0x01a9 }, + { .mbps = 150, .reg = 0x31, .osc_freq = 0x01a9 }, + { .mbps = 160, .reg = 0x02, .osc_freq = 0x01a9 }, + { .mbps = 170, .reg = 0x12, .osc_freq = 0x01a9 }, + { .mbps = 180, .reg = 0x22, .osc_freq = 0x01a9 }, + { .mbps = 190, .reg = 0x32, .osc_freq = 0x01a9 }, + { .mbps = 205, .reg = 0x03, .osc_freq = 0x01a9 }, + { .mbps = 220, .reg = 0x13, .osc_freq = 0x01a9 }, + { .mbps = 235, .reg = 0x23, .osc_freq = 0x01a9 }, + { .mbps = 250, .reg = 0x33, .osc_freq = 0x01a9 }, + { .mbps = 275, .reg = 0x04, .osc_freq = 0x01a9 }, + { .mbps = 300, .reg = 0x14, .osc_freq = 0x01a9 }, + { .mbps = 325, .reg = 0x25, .osc_freq = 0x01a9 }, + { .mbps = 350, .reg = 0x35, .osc_freq = 0x01a9 }, + { .mbps = 400, .reg = 0x05, .osc_freq = 0x01a9 }, + { .mbps = 450, .reg = 0x16, .osc_freq = 0x01a9 }, + { .mbps = 500, .reg = 0x26, .osc_freq = 0x01a9 }, + { .mbps = 550, .reg = 0x37, .osc_freq = 0x01a9 }, + { .mbps = 600, .reg = 0x07, .osc_freq = 0x01a9 }, + { .mbps = 650, .reg = 0x18, .osc_freq = 0x01a9 }, + { .mbps = 700, .reg = 0x28, .osc_freq = 0x01a9 }, + { .mbps = 750, .reg = 0x39, .osc_freq = 0x01a9 }, + { .mbps = 800, .reg = 0x09, .osc_freq = 0x01a9 }, + { .mbps = 850, .reg = 0x19, .osc_freq = 0x01a9 }, + { .mbps = 900, .reg = 0x29, .osc_freq = 0x01a9 }, + { .mbps = 950, .reg = 0x3a, .osc_freq = 0x01a9 }, + { .mbps = 1000, .reg = 0x0a, .osc_freq = 0x01a9 }, + { .mbps = 1050, .reg = 0x1a, .osc_freq = 0x01a9 }, + { .mbps = 1100, .reg = 0x2a, .osc_freq = 0x01a9 }, + { .mbps = 1150, .reg = 0x3b, .osc_freq = 0x01a9 }, + { .mbps = 1200, .reg = 0x0b, .osc_freq = 0x01a9 }, + { .mbps = 1250, .reg = 0x1b, .osc_freq = 0x01a9 }, + { .mbps = 1300, .reg = 0x2b, .osc_freq = 0x01a9 }, + { .mbps = 1350, .reg = 0x3c, .osc_freq = 0x01a9 }, + { .mbps = 1400, .reg = 0x0c, .osc_freq = 0x01a9 }, + { .mbps = 1450, .reg = 0x1c, .osc_freq = 0x01a9 }, + { .mbps = 1500, .reg = 0x2c, .osc_freq = 0x01a9 }, + { .mbps = 1550, .reg = 0x3d, .osc_freq = 0x0108 }, + { .mbps = 1600, .reg = 0x0d, .osc_freq = 0x0110 }, + { .mbps = 1650, .reg = 0x1d, .osc_freq = 0x0119 }, + { .mbps = 1700, .reg = 0x2e, .osc_freq = 0x0121 }, + { .mbps = 1750, .reg = 0x3e, .osc_freq = 0x012a }, + { .mbps = 1800, .reg = 0x0e, .osc_freq = 0x0132 }, + { .mbps = 1850, .reg = 0x1e, .osc_freq = 0x013b }, + { .mbps = 1900, .reg = 0x2f, .osc_freq = 0x0143 }, + { .mbps = 1950, .reg = 0x3f, .osc_freq = 0x014c }, + { .mbps = 2000, .reg = 0x0f, .osc_freq = 0x0154 }, + { .mbps = 2050, .reg = 0x40, .osc_freq = 0x015d }, + { .mbps = 2100, .reg = 0x41, .osc_freq = 0x0165 }, + { .mbps = 2150, .reg = 0x42, .osc_freq = 0x016e }, + { .mbps = 2200, .reg = 0x43, .osc_freq = 0x0176 }, + { .mbps = 2250, .reg = 0x44, .osc_freq = 0x017f }, + { .mbps = 2300, .reg = 0x45, .osc_freq = 0x0187 }, + { .mbps = 2350, .reg = 0x46, .osc_freq = 0x0190 }, + { .mbps = 2400, .reg = 0x47, .osc_freq = 0x0198 }, + { .mbps = 2450, .reg = 0x48, .osc_freq = 0x01a1 }, + { .mbps = 2500, .reg = 0x49, .osc_freq = 0x01a9 }, + { /* sentinel */ }, +}; + /* PHY ESC Error Monitor */ #define PHEERM_REG 0x74 @@ -1195,6 +1282,195 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv, return 0; } +static int rcsi2_d_phy_setting_v4m(struct rcar_csi2 *priv, int data_rate) +{ + unsigned int timeout; + int ret; + + static const struct phtw_value step1[] = { + { .data = 0x00, .code = 0x00 }, + { .data = 0x00, .code = 0x1e }, + }; + + /* Shutdown and reset PHY. */ + rcsi2_write(priv, V4H_DPHY_RSTZ_REG, BIT(0)); + rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, BIT(0)); + + /* Start internal calibration (POR). */ + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); + if (ret) + return ret; + + /* Wait for POR to complete. */ + for (timeout = 10; timeout > 0; timeout--) { + if ((rcsi2_read(priv, V4M_PHTR_REG) & 0xf0000) == 0x70000) + break; + usleep_range(1000, 2000); + } + + if (!timeout) { + dev_err(priv->dev, "D-PHY calibration failed\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int rcsi2_set_osc_freq(struct rcar_csi2 *priv, unsigned int mbps) +{ + const struct rcsi2_mbps_info *info; + struct phtw_value steps[] = { + { .data = 0x00, .code = 0x00 }, + { .code = 0xe2 }, /* Data filled in below. */ + { .code = 0xe3 }, /* Data filled in below. */ + { .data = 0x01, .code = 0xe4 }, + }; + + info = rcsi2_mbps_to_info(priv, priv->info->hsfreqrange, mbps); + if (!info) + return -ERANGE; + + /* Fill in data for command. */ + steps[1].data = (info->osc_freq & 0x00ff) >> 0; + steps[2].data = (info->osc_freq & 0x0f00) >> 8; + + return rcsi2_phtw_write_array(priv, steps, ARRAY_SIZE(steps)); +} + +static int rcsi2_init_common_v4m(struct rcar_csi2 *priv, unsigned int mbps) +{ + int ret; + + static const struct phtw_value step1[] = { + { .data = 0x00, .code = 0x00 }, + { .data = 0x3c, .code = 0x08 }, + }; + + static const struct phtw_value step2[] = { + { .data = 0x00, .code = 0x00 }, + { .data = 0x80, .code = 0xe0 }, + { .data = 0x01, .code = 0xe1 }, + { .data = 0x06, .code = 0x00 }, + { .data = 0x0f, .code = 0x11 }, + { .data = 0x08, .code = 0x00 }, + { .data = 0x0f, .code = 0x11 }, + { .data = 0x0a, .code = 0x00 }, + { .data = 0x0f, .code = 0x11 }, + { .data = 0x0c, .code = 0x00 }, + { .data = 0x0f, .code = 0x11 }, + { .data = 0x01, .code = 0x00 }, + { .data = 0x31, .code = 0xaa }, + { .data = 0x05, .code = 0x00 }, + { .data = 0x05, .code = 0x09 }, + { .data = 0x07, .code = 0x00 }, + { .data = 0x05, .code = 0x09 }, + { .data = 0x09, .code = 0x00 }, + { .data = 0x05, .code = 0x09 }, + { .data = 0x0b, .code = 0x00 }, + { .data = 0x05, .code = 0x09 }, + }; + + if (priv->info->hsfreqrange) { + ret = rcsi2_set_phypll(priv, mbps); + if (ret) + return ret; + + ret = rcsi2_set_osc_freq(priv, mbps); + if (ret) + return ret; + } + + if (mbps <= 1500) { + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); + if (ret) + return ret; + } + + if (priv->info->csi0clkfreqrange) + rcsi2_write(priv, V4M_CSI0CLKFCPR_REG, + CSI0CLKFREQRANGE(priv->info->csi0clkfreqrange)); + + rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK | + V4H_PHY_EN_ENABLE_0 | V4H_PHY_EN_ENABLE_1 | + V4H_PHY_EN_ENABLE_2 | V4H_PHY_EN_ENABLE_3); + + if (mbps > 1500) { + ret = rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2)); + if (ret) + return ret; + } + + return ret; +} + +static int rcsi2_start_receiver_v4m(struct rcar_csi2 *priv, + struct v4l2_subdev_state *state) +{ + const struct rcar_csi2_format *format; + const struct v4l2_mbus_framefmt *fmt; + unsigned int lanes; + int mbps; + int ret; + + /* Calculate parameters */ + fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK); + format = rcsi2_code_to_fmt(fmt->code); + if (!format) + return -EINVAL; + + ret = rcsi2_get_active_lanes(priv, &lanes); + if (ret) + return ret; + + mbps = rcsi2_calc_mbps(priv, format->bpp, lanes); + if (mbps < 0) + return mbps; + + /* Reset LINK and PHY */ + rcsi2_write(priv, V4H_CSI2_RESETN_REG, 0); + rcsi2_write(priv, V4H_DPHY_RSTZ_REG, 0); + rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, 0); + rcsi2_write(priv, V4M_PHTC_REG, PHTC_TESTCLR); + + /* PHY static setting */ + rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK); + rcsi2_write(priv, V4H_FLDC_REG, 0); + rcsi2_write(priv, V4H_FLDD_REG, 0); + rcsi2_write(priv, V4H_IDIC_REG, 0); + rcsi2_write(priv, V4H_PHY_MODE_REG, V4H_PHY_MODE_DPHY); + rcsi2_write(priv, V4H_N_LANES_REG, lanes - 1); + + rcsi2_write(priv, V4M_FRXM_REG, + V4M_FRXM_FORCERXMODE_0 | V4M_FRXM_FORCERXMODE_1 | + V4M_FRXM_FORCERXMODE_2 | V4M_FRXM_FORCERXMODE_3); + rcsi2_write(priv, V4M_OVR1_REG, + V4M_OVR1_FORCERXMODE_0 | V4M_OVR1_FORCERXMODE_1 | + V4M_OVR1_FORCERXMODE_2 | V4M_OVR1_FORCERXMODE_3); + + /* Reset CSI2 */ + rcsi2_write(priv, V4M_PHTC_REG, 0); + rcsi2_write(priv, V4H_CSI2_RESETN_REG, BIT(0)); + + /* Common settings */ + ret = rcsi2_init_common_v4m(priv, mbps); + if (ret) + return ret; + + /* D-PHY settings */ + ret = rcsi2_d_phy_setting_v4m(priv, mbps); + if (ret) + return ret; + + rcsi2_wait_phy_start_v4h(priv, V4H_ST_PHYST_ST_STOPSTATE_0 | + V4H_ST_PHYST_ST_STOPSTATE_1 | + V4H_ST_PHYST_ST_STOPSTATE_2 | + V4H_ST_PHYST_ST_STOPSTATE_3); + + rcsi2_write(priv, V4M_FRXM_REG, 0); + + return 0; +} + static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state) { int ret; @@ -1832,6 +2108,20 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a779g0 = { .support_cphy = true, }; +static const struct rcsi2_register_layout rcsi2_registers_v4m = { + .phtw = V4M_PHTW_REG, + .phypll = V4M_PHYPLL_REG, +}; + +static const struct rcar_csi2_info rcar_csi2_info_r8a779h0 = { + .regs = &rcsi2_registers_v4m, + .start_receiver = rcsi2_start_receiver_v4m, + .hsfreqrange = hsfreqrange_v4m, + .csi0clkfreqrange = 0x0c, + .use_isp = true, + .support_dphy = true, +}; + static const struct of_device_id rcar_csi2_of_table[] = { { .compatible = "renesas,r8a774a1-csi2", @@ -1885,6 +2175,10 @@ static const struct of_device_id rcar_csi2_of_table[] = { .compatible = "renesas,r8a779g0-csi2", .data = &rcar_csi2_info_r8a779g0, }, + { + .compatible = "renesas,r8a779h0-csi2", + .data = &rcar_csi2_info_r8a779h0, + }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, rcar_csi2_of_table);