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[73.183.52.120]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4b0aa1efe78sm76186821cf.8.2025.08.12.07.40.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Aug 2025 07:40:56 -0700 (PDT) From: Brian Masney Date: Tue, 12 Aug 2025 10:40:33 -0400 Subject: [PATCH v3 3/9] clk: test: introduce clk_dummy_div for a mock divider Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250812-clk-tests-docs-v3-3-054aed58dcd3@redhat.com> References: <20250812-clk-tests-docs-v3-0-054aed58dcd3@redhat.com> In-Reply-To: <20250812-clk-tests-docs-v3-0-054aed58dcd3@redhat.com> To: Michael Turquette , Stephen Boyd , Maxime Ripard Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Brian Masney X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1755009649; l=1985; i=bmasney@redhat.com; s=20250528; h=from:subject:message-id; bh=sXw8h0lALjsD5VKwkwWy/O2FfwzxhOoSuFOjrsFYzhQ=; b=gACoo/bgoeAjMP5T4HlHRzvTtPX3bFCCeOj+ESgvfN4r2olnMmu6i0I/No579AFXVqJEsZ8jj ULumme+QsH6Dn0S/m70MzjIRjTxzoowfL91FY3Dq6nHPbvp1GgpPOtJ X-Developer-Key: i=bmasney@redhat.com; a=ed25519; pk=x20f2BQYftANnik+wvlm4HqLqAlNs/npfVcbhHPOK2U= This is used to mock up a divider in the clk kunit tests. Signed-off-by: Brian Masney --- drivers/clk/clk_test.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c index fafa736ca32144a2feae75a8d641abca3162d42d..61668fcd7203c4cef9f22b8c0c5bb5a50d331f53 100644 --- a/drivers/clk/clk_test.c +++ b/drivers/clk/clk_test.c @@ -137,6 +137,48 @@ static const struct clk_ops clk_dummy_single_parent_ops = { .get_parent = clk_dummy_single_get_parent, }; +// 4 ought to be enough for anybody +#define CLK_DUMMY_DIV_WIDTH 4 +#define CLK_DUMMY_DIV_FLAGS (CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ROUND_CLOSEST) + +struct clk_dummy_div { + struct clk_hw hw; + unsigned int div; +}; + +static unsigned long clk_dummy_div_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_dummy_div *div = container_of(hw, struct clk_dummy_div, hw); + + return divider_recalc_rate(hw, parent_rate, div->div, NULL, + CLK_DUMMY_DIV_FLAGS, CLK_DUMMY_DIV_WIDTH); +} + +static long clk_dummy_div_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + return divider_round_rate(hw, rate, parent_rate, NULL, + CLK_DUMMY_DIV_WIDTH, CLK_DUMMY_DIV_FLAGS); +} + +static int clk_dummy_div_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_dummy_div *div = container_of(hw, struct clk_dummy_div, hw); + + div->div = divider_get_val(rate, parent_rate, NULL, CLK_DUMMY_DIV_WIDTH, + CLK_DUMMY_DIV_FLAGS); + + return 0; +} + +static const struct clk_ops clk_dummy_div_ops = { + .recalc_rate = clk_dummy_div_recalc_rate, + .round_rate = clk_dummy_div_round_rate, + .set_rate = clk_dummy_div_set_rate, +}; + struct clk_multiple_parent_ctx { struct clk_dummy_context parents_ctx[2]; struct clk_hw hw; -- 2.50.1