From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hT784-0006qU-Se for barebox@lists.infradead.org; Tue, 21 May 2019 15:56:44 +0000 From: Ahmad Fatoum Date: Tue, 21 May 2019 17:56:26 +0200 Message-Id: <20190521155626.9906-6-a.fatoum@pengutronix.de> In-Reply-To: <20190521155626.9906-1-a.fatoum@pengutronix.de> References: <20190521155626.9906-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v2 5/5] clk: imx6: define an enum for ldb mux inputs To: barebox@lists.infradead.org Cc: pza@pengutronix.de, Ahmad Fatoum For better readability should this code be reviewed in future, replace the hardcoded input numbers with an enum. This is just a cosmetic change and was verified to not affect clk-imx6.o. Signed-off-by: Ahmad Fatoum --- drivers/clk/imx/clk-imx6.c | 39 +++++++++++++++++++++++--------------- 1 file changed, 24 insertions(+), 15 deletions(-) diff --git a/drivers/clk/imx/clk-imx6.c b/drivers/clk/imx/clk-imx6.c index 69586f04a21f..fd0a51f1dcda 100644 --- a/drivers/clk/imx/clk-imx6.c +++ b/drivers/clk/imx/clk-imx6.c @@ -213,12 +213,20 @@ static const char *ipu_sels[] = { "pll3_pfd1_540m", }; +enum ldb_di_sel { /* for use in init_ldb_clks */ + LDB_DI_SEL_PLL5_VIDEO_DIV = 0, + LDB_DI_SEL_PLL2_PFD0_352M = 1, + LDB_DI_SEL_PLL2_PFD2_396M = 2, + LDB_DI_SEL_MMDC_CH1_AXI = 3, + LDB_DI_SEL_PLL3_USB_OTG = 4, +}; + static const char *ldb_di_sels[] = { - "pll5_video_div", - "pll2_pfd0_352m", - "pll2_pfd2_396m", - "mmdc_ch1_axi_podf", - "pll3_usb_otg", + [LDB_DI_SEL_PLL5_VIDEO_DIV] = "pll5_video_div", + [LDB_DI_SEL_PLL2_PFD0_352M] = "pll2_pfd0_352m", + [LDB_DI_SEL_PLL2_PFD2_396M] = "pll2_pfd2_396m", + [LDB_DI_SEL_MMDC_CH1_AXI] = "mmdc_ch1_axi_podf", + [LDB_DI_SEL_PLL3_USB_OTG] = "pll3_usb_otg", }; static const char *ipu_di_pre_sels[] = { @@ -311,23 +319,23 @@ static int ldb_di_sel_by_clock_id(int clock_id) case IMX6QDL_CLK_PLL5_VIDEO_DIV: if (!cpu_has_working_video_pll_post_div()) return -ENOENT; - return 0; + return LDB_DI_SEL_PLL5_VIDEO_DIV; case IMX6QDL_CLK_PLL2_PFD0_352M: - return 1; + return LDB_DI_SEL_PLL2_PFD0_352M; case IMX6QDL_CLK_PLL2_PFD2_396M: - return 2; + return LDB_DI_SEL_PLL2_PFD2_396M; case IMX6QDL_CLK_MMDC_CH1_AXI: - return 3; + return LDB_DI_SEL_MMDC_CH1_AXI; case IMX6QDL_CLK_PLL3_USB_OTG: - return 4; + return LDB_DI_SEL_PLL3_USB_OTG; default: return -ENOENT; } } static void of_assigned_ldb_sels(struct device_node *node, - unsigned int *ldb_di0_sel, - unsigned int *ldb_di1_sel) + enum ldb_di_sel *ldb_di0_sel, + enum ldb_di_sel *ldb_di1_sel) { struct of_phandle_args clkspec; int index, rc, num_parents; @@ -466,7 +474,7 @@ static void mmdc_ch1_reenable(void __iomem *ccm_base) static void init_ldb_clks(struct device_node *np, void __iomem *ccm_base) { unsigned int reg; - unsigned int sel[2][4]; + enum ldb_di_sel sel[2][4]; int i; reg = readl(ccm_base + CCM_CS2CDR); @@ -480,7 +488,7 @@ static void init_ldb_clks(struct device_node *np, void __iomem *ccm_base) for (i = 0; i < 2; i++) { /* Warn if a glitch might have been introduced already */ - if (sel[i][0] != 3) { + if (sel[i][0] != LDB_DI_SEL_MMDC_CH1_AXI) { pr_warn("ccm: ldb_di%d_sel already changed from reset value: %d\n", i, sel[i][0]); } @@ -489,7 +497,8 @@ static void init_ldb_clks(struct device_node *np, void __iomem *ccm_base) continue; /* Only switch to or from pll2_pfd2_396m if it is disabled */ - if ((sel[i][0] == 2 || sel[i][3] == 2) && + if ((sel[i][0] == LDB_DI_SEL_PLL2_PFD2_396M || + sel[i][3] == LDB_DI_SEL_PLL2_PFD2_396M) && (clk_get_parent(clks[IMX6QDL_CLK_PERIPH_PRE]) == clks[IMX6QDL_CLK_PLL2_PFD2_396M])) { pr_err("ccm: ldb_di%d_sel: couldn't disable pll2_pfd2_396m\n", -- 2.20.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox