From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 73A5B1487CD; Thu, 12 Dec 2024 15:24:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734017058; cv=none; b=lP05M93BcAY9LW9aPfiHuYXF12tY4qLj6h2mkhP48oThBZmVjdVNSWQYxiLpm4GKKuoEiOtQEeN6skdZ6VhBbwgI+q8yKyXjWQjnMuKmkuoZPu84FhfqfapOsaOqI9lgy2eCERdUSbEIaR6gOBnNa40HwSRDvoO0nnumC2nxKLg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734017058; c=relaxed/simple; bh=R2c5yPmn2GYDKtivwVoW0U/zTZtK0prZ8FgANzaYamA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q69hSs80JJsfpytEIQwDlPgScyvYZNxY6cdrVfoKTDaD3Ey/gji9cMyvYDV88wzp0wgrbnkD2XoHr0Q1fxn/hayxcy38LIBgPd4ju+dFcpuoCk772unBUoI3wdvZVTwtSfOXaABhVMBL2wCoVAznszrkgFgI8j2vJxIYYnSrBBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=XYqon+6s; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="XYqon+6s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1035C4CECE; Thu, 12 Dec 2024 15:24:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734017058; bh=R2c5yPmn2GYDKtivwVoW0U/zTZtK0prZ8FgANzaYamA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XYqon+6snTWbia2G2Vq6v2zHtdb6s651SgHaHFPzjXuQnfQXrIdGENam7vn+qr2c7 xMjWWhPHHDC1Gy/LzwxctmCe5D94YWIrOb+1SGHJt9PGC/5wTxorF8uXjcQPw/uRqn Kr571PbjmUAfqGWRFX8KdtV9PLPR7McYqzyrgBMo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Baryshkov , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.12 371/466] clk: qcom: rcg2: add clk_rcg2_shared_floor_ops Date: Thu, 12 Dec 2024 15:59:00 +0100 Message-ID: <20241212144321.431585815@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241212144306.641051666@linuxfoundation.org> References: <20241212144306.641051666@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Baryshkov [ Upstream commit aec8c0e28ce4a1f89fd82fcc06a5cc73147e9817 ] Generally SDCC clocks use clk_rcg2_floor_ops, however on SAR2130P platform it's recommended to use rcg2_shared_ops for all Root Clock Generators to park them instead of disabling. Implement a mix of those, clk_rcg2_shared_floor_ops. Signed-off-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20241027-sar2130p-clocks-v5-6-ecad2a1432ba@linaro.org Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- drivers/clk/qcom/clk-rcg.h | 1 + drivers/clk/qcom/clk-rcg2.c | 48 +++++++++++++++++++++++++++++++++---- 2 files changed, 44 insertions(+), 5 deletions(-) diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h index 8e0f3372dc7a8..80f1f4fcd52a6 100644 --- a/drivers/clk/qcom/clk-rcg.h +++ b/drivers/clk/qcom/clk-rcg.h @@ -198,6 +198,7 @@ extern const struct clk_ops clk_byte2_ops; extern const struct clk_ops clk_pixel_ops; extern const struct clk_ops clk_gfx3d_ops; extern const struct clk_ops clk_rcg2_shared_ops; +extern const struct clk_ops clk_rcg2_shared_floor_ops; extern const struct clk_ops clk_rcg2_shared_no_init_park_ops; extern const struct clk_ops clk_dp_ops; diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c index bf26c5448f006..bf6406f5279a4 100644 --- a/drivers/clk/qcom/clk-rcg2.c +++ b/drivers/clk/qcom/clk-rcg2.c @@ -1186,15 +1186,23 @@ clk_rcg2_shared_force_enable_clear(struct clk_hw *hw, const struct freq_tbl *f) return clk_rcg2_clear_force_enable(hw); } -static int clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate, - unsigned long parent_rate) +static int __clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate, + enum freq_policy policy) { struct clk_rcg2 *rcg = to_clk_rcg2(hw); const struct freq_tbl *f; - f = qcom_find_freq(rcg->freq_tbl, rate); - if (!f) + switch (policy) { + case FLOOR: + f = qcom_find_freq_floor(rcg->freq_tbl, rate); + break; + case CEIL: + f = qcom_find_freq(rcg->freq_tbl, rate); + break; + default: return -EINVAL; + } /* * In case clock is disabled, update the M, N and D registers, cache @@ -1207,10 +1215,28 @@ static int clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate, return clk_rcg2_shared_force_enable_clear(hw, f); } +static int clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + return __clk_rcg2_shared_set_rate(hw, rate, parent_rate, CEIL); +} + static int clk_rcg2_shared_set_rate_and_parent(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate, u8 index) { - return clk_rcg2_shared_set_rate(hw, rate, parent_rate); + return __clk_rcg2_shared_set_rate(hw, rate, parent_rate, CEIL); +} + +static int clk_rcg2_shared_set_floor_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + return __clk_rcg2_shared_set_rate(hw, rate, parent_rate, FLOOR); +} + +static int clk_rcg2_shared_set_floor_rate_and_parent(struct clk_hw *hw, + unsigned long rate, unsigned long parent_rate, u8 index) +{ + return __clk_rcg2_shared_set_rate(hw, rate, parent_rate, FLOOR); } static int clk_rcg2_shared_enable(struct clk_hw *hw) @@ -1348,6 +1374,18 @@ const struct clk_ops clk_rcg2_shared_ops = { }; EXPORT_SYMBOL_GPL(clk_rcg2_shared_ops); +const struct clk_ops clk_rcg2_shared_floor_ops = { + .enable = clk_rcg2_shared_enable, + .disable = clk_rcg2_shared_disable, + .get_parent = clk_rcg2_shared_get_parent, + .set_parent = clk_rcg2_shared_set_parent, + .recalc_rate = clk_rcg2_shared_recalc_rate, + .determine_rate = clk_rcg2_determine_floor_rate, + .set_rate = clk_rcg2_shared_set_floor_rate, + .set_rate_and_parent = clk_rcg2_shared_set_floor_rate_and_parent, +}; +EXPORT_SYMBOL_GPL(clk_rcg2_shared_floor_ops); + static int clk_rcg2_shared_no_init_park(struct clk_hw *hw) { struct clk_rcg2 *rcg = to_clk_rcg2(hw); -- 2.43.0