[07/11] clk: sunxi-ng: Add A80 Display Engine CCU

Message ID	20170124023230.3990-8-wens@csie.org (mailing list archive)
State	Superseded, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Chen-Yu Tsai <wens@csie.org> To: Maxime Ripard <maxime.ripard@free-electrons.com>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@codeaurora.org> Subject: [PATCH 07/11] clk: sunxi-ng: Add A80 Display Engine CCU Date: Tue, 24 Jan 2017 10:32:26 +0800 Message-Id: <20170124023230.3990-8-wens@csie.org> In-Reply-To: <20170124023230.3990-1-wens@csie.org> References: <20170124023230.3990-1-wens@csie.org> Precedence: list Cc: devicetree@vger.kernel.org, linux-sunxi@googlegroups.com, linux-kernel@vger.kernel.org, Chen-Yu Tsai <wens@csie.org>, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org

On Fri, Jan 27, 2017 at 05:26:53PM +0800, Chen-Yu Tsai wrote: > On Fri, Jan 27, 2017 at 4:58 PM, Maxime Ripard > <maxime.ripard@free-electrons.com> wrote: > > On Thu, Jan 26, 2017 at 07:20:22PM +0800, Chen-Yu Tsai wrote: > >> On Thu, Jan 26, 2017 at 6:39 PM, Maxime Ripard > >> <maxime.ripard@free-electrons.com> wrote: > >> > Hi, > >> > > >> > On Tue, Jan 24, 2017 at 10:32:26AM +0800, Chen-Yu Tsai wrote: > >> >> Add support for the display engine clock controls found on the A80. > >> >> > >> >> Signed-off-by: Chen-Yu Tsai <wens@csie.org> > >> >> --- > >> >> .../devicetree/bindings/clock/sun9i-de.txt | 28 ++ > >> >> drivers/clk/sunxi-ng/Makefile | 1 + > >> >> drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c | 283 +++++++++++++++++++++ > >> >> drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h | 33 +++ > >> >> include/dt-bindings/clock/sun9i-a80-de.h | 80 ++++++ > >> >> include/dt-bindings/reset/sun9i-a80-de.h | 58 +++++ > >> >> 6 files changed, 483 insertions(+) > >> >> create mode 100644 Documentation/devicetree/bindings/clock/sun9i-de.txt > >> >> create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c > >> >> create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h > >> >> create mode 100644 include/dt-bindings/clock/sun9i-a80-de.h > >> >> create mode 100644 include/dt-bindings/reset/sun9i-a80-de.h > >> >> > >> >> diff --git a/Documentation/devicetree/bindings/clock/sun9i-de.txt b/Documentation/devicetree/bindings/clock/sun9i-de.txt > >> >> new file mode 100644 > >> >> index 000000000000..3a5e6df70677 > >> >> --- /dev/null > >> >> +++ b/Documentation/devicetree/bindings/clock/sun9i-de.txt > >> >> @@ -0,0 +1,28 @@ > >> >> +Allwinner A80 Display Engine Clock Control Binding > >> >> +------------------------------------ > >> >> + > >> >> +Required properties : > >> >> +- compatible: must contain one of the following compatibles: > >> >> + - "allwinner,sun9i-a80-de-clocks" > >> >> + > >> >> +- reg: Must contain the registers base address and length > >> >> +- clocks: phandle to the clocks feeding the display engine subsystem. > >> >> + Three are needed: > >> >> + - "mod": the display engine module clock > >> >> + - "dram": the DRAM bus clock for the system > >> >> + - "bus": the bus clock for the whole display engine subsystem > >> >> +- clock-names: Must contain the clock names described just above > >> >> +- resets: phandle to the reset control for the display engine subsystem. > >> >> +- #clock-cells : must contain 1 > >> >> +- #reset-cells : must contain 1 > >> >> + > >> >> +Example: > >> >> +de_clocks: clock@03000000 { > >> >> + compatible = "allwinner,sun9i-a80-de-clks"; > >> >> + reg = <0x03000000 0x30>; > >> >> + clocks = <&ccu CLK_DE>, <&ccu CLK_SDRAM>, <&ccu CLK_BUS_DE>; > >> >> + clock-names = "mod", "dram", "bus"; > >> >> + resets = <&ccu RST_BUS_DE>; > >> >> + #clock-cells = <1>; > >> >> + #reset-cells = <1>; > >> >> +}; > >> >> diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile > >> >> index 8f37ef7fb67d..6feaac0c5600 100644 > >> >> --- a/drivers/clk/sunxi-ng/Makefile > >> >> +++ b/drivers/clk/sunxi-ng/Makefile > >> >> @@ -26,4 +26,5 @@ obj-$(CONFIG_SUN8I_A33_CCU) += ccu-sun8i-a33.o > >> >> obj-$(CONFIG_SUN8I_H3_CCU) += ccu-sun8i-h3.o > >> >> obj-$(CONFIG_SUN8I_V3S_CCU) += ccu-sun8i-v3s.o > >> >> obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80.o > >> >> +obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80-de.o > >> >> obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80-usb.o > >> >> diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c > >> >> new file mode 100644 > >> >> index 000000000000..3fc27db0a49a > >> >> --- /dev/null > >> >> +++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c > >> >> @@ -0,0 +1,283 @@ > >> >> +/* > >> >> + * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved. > >> >> + * > >> >> + * This software is licensed under the terms of the GNU General Public > >> >> + * License version 2, as published by the Free Software Foundation, and > >> >> + * may be copied, distributed, and modified under those terms. > >> >> + * > >> >> + * This program is distributed in the hope that it will be useful, > >> >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of > >> >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > >> >> + * GNU General Public License for more details. > >> >> + */ > >> >> + > >> >> +#include <linux/clk.h> > >> >> +#include <linux/clk-provider.h> > >> >> +#include <linux/of_address.h> > >> >> +#include <linux/platform_device.h> > >> >> +#include <linux/reset.h> > >> >> + > >> >> +#include "ccu_common.h" > >> >> +#include "ccu_div.h" > >> >> +#include "ccu_gate.h" > >> >> +#include "ccu_reset.h" > >> >> + > >> >> +#include "ccu-sun9i-a80-de.h" > >> >> + > >> >> +static SUNXI_CCU_GATE(fe0_clk, "fe0", "fe0-div", > >> >> + 0x00, BIT(0), 0); > >> >> +static SUNXI_CCU_GATE(fe1_clk, "fe1", "fe1-div", > >> >> + 0x00, BIT(1), 0); > >> >> +static SUNXI_CCU_GATE(fe2_clk, "fe2", "fe2-div", > >> >> + 0x00, BIT(2), 0); > >> >> +static SUNXI_CCU_GATE(iep_deu0_clk, "iep-deu0", "de", > >> >> + 0x00, BIT(4), 0); > >> >> +static SUNXI_CCU_GATE(iep_deu1_clk, "iep-deu1", "de", > >> >> + 0x00, BIT(5), 0); > >> >> +static SUNXI_CCU_GATE(be0_clk, "be0", "be0-div", > >> >> + 0x00, BIT(8), 0); > >> >> +static SUNXI_CCU_GATE(be1_clk, "be1", "be1-div", > >> >> + 0x00, BIT(9), 0); > >> >> +static SUNXI_CCU_GATE(be2_clk, "be2", "be2-div", > >> >> + 0x00, BIT(10), 0); > >> >> +static SUNXI_CCU_GATE(iep_drc0_clk, "iep-drc0", "de", > >> >> + 0x00, BIT(12), 0); > >> >> +static SUNXI_CCU_GATE(iep_drc1_clk, "iep-drc1", "de", > >> >> + 0x00, BIT(13), 0); > >> >> +static SUNXI_CCU_GATE(merge_clk, "merge", "de", > >> >> + 0x00, BIT(20), 0); > >> >> + > >> >> +static SUNXI_CCU_GATE(dram_fe0_clk, "dram-fe0", "sdram", > >> >> + 0x04, BIT(0), 0); > >> >> +static SUNXI_CCU_GATE(dram_fe1_clk, "dram-fe1", "sdram", > >> >> + 0x04, BIT(1), 0); > >> >> +static SUNXI_CCU_GATE(dram_fe2_clk, "dram-fe2", "sdram", > >> >> + 0x04, BIT(2), 0); > >> >> +static SUNXI_CCU_GATE(dram_deu0_clk, "dram-deu0", "sdram", > >> >> + 0x04, BIT(4), 0); > >> >> +static SUNXI_CCU_GATE(dram_deu1_clk, "dram-deu1", "sdram", > >> >> + 0x04, BIT(5), 0); > >> >> +static SUNXI_CCU_GATE(dram_be0_clk, "dram-be0", "sdram", > >> >> + 0x04, BIT(8), 0); > >> >> +static SUNXI_CCU_GATE(dram_be1_clk, "dram-be1", "sdram", > >> >> + 0x04, BIT(9), 0); > >> >> +static SUNXI_CCU_GATE(dram_be2_clk, "dram-be2", "sdram", > >> >> + 0x04, BIT(10), 0); > >> >> +static SUNXI_CCU_GATE(dram_drc0_clk, "dram-drc0", "sdram", > >> >> + 0x04, BIT(12), 0); > >> >> +static SUNXI_CCU_GATE(dram_drc1_clk, "dram-drc1", "sdram", > >> >> + 0x04, BIT(13), 0); > >> >> + > >> >> +static SUNXI_CCU_GATE(bus_fe0_clk, "bus-fe0", "bus-de", > >> >> + 0x08, BIT(0), 0); > >> >> +static SUNXI_CCU_GATE(bus_fe1_clk, "bus-fe1", "bus-de", > >> >> + 0x08, BIT(1), 0); > >> >> +static SUNXI_CCU_GATE(bus_fe2_clk, "bus-fe2", "bus-de", > >> >> + 0x08, BIT(2), 0); > >> >> +static SUNXI_CCU_GATE(bus_deu0_clk, "bus-deu0", "bus-de", > >> >> + 0x08, BIT(4), 0); > >> >> +static SUNXI_CCU_GATE(bus_deu1_clk, "bus-deu1", "bus-de", > >> >> + 0x08, BIT(5), 0); > >> >> +static SUNXI_CCU_GATE(bus_be0_clk, "bus-be0", "bus-de", > >> >> + 0x08, BIT(8), 0); > >> >> +static SUNXI_CCU_GATE(bus_be1_clk, "bus-be1", "bus-de", > >> >> + 0x08, BIT(9), 0); > >> >> +static SUNXI_CCU_GATE(bus_be2_clk, "bus-be2", "bus-de", > >> >> + 0x08, BIT(10), 0); > >> >> +static SUNXI_CCU_GATE(bus_drc0_clk, "bus-drc0", "bus-de", > >> >> + 0x08, BIT(12), 0); > >> >> +static SUNXI_CCU_GATE(bus_drc1_clk, "bus-drc1", "bus-de", > >> >> + 0x08, BIT(13), 0); > >> >> + > >> >> +static SUNXI_CCU_M(fe0_div_clk, "fe0-div", "de", 0x20, 0, 4, 0); > >> >> +static SUNXI_CCU_M(fe1_div_clk, "fe1-div", "de", 0x20, 4, 4, 0); > >> >> +static SUNXI_CCU_M(fe2_div_clk, "fe2-div", "de", 0x20, 8, 4, 0); > >> >> +static SUNXI_CCU_M(be0_div_clk, "be0-div", "de", 0x20, 16, 4, 0); > >> >> +static SUNXI_CCU_M(be1_div_clk, "be1-div", "de", 0x20, 20, 4, 0); > >> >> +static SUNXI_CCU_M(be2_div_clk, "be2-div", "de", 0x20, 24, 4, 0); > >> > > >> > I couldn't find any documentation for this CCU. > >> > >> I dug this up in the released Allwinner kernel. > >> > >> > What are those clocks for, and how the display engine should be using > >> > (ie, which one is it expecting to drive / ungate / etc.) > >> > >> Allwinner basically put all DE-related clock controls into a > >> separate module. In here, as the names above suggest, we have > >> bus gates, dram gates, and module clocks for each part of the > >> display pipeline. As with older SoCs that have DE 1.0, each > >> module should ungate and use the clocks related to them. > >> > >> I'll put something like the above in the commit message. > > > > So the module clocks are a combination of a divider and a clock? > > Correct. Some have dividers, some don't. > > > And I'm guessing the reason you separated them is because they belong > > in a different register. > > Correct. Trying to support them within one clock would be a big > deviation from what sunxi-ng currently supports. I left the > divider clocks at the end of the list, and aren't exported to > dt either. So if we really want to get rid of those intermediate > divider clocks, we can do so later without affecting the exposed > interface. That works for me, thanks! Maxime

diff --git a/Documentation/devicetree/bindings/clock/sun9i-de.txt b/Documentation/devicetree/bindings/clock/sun9i-de.txt new file mode 100644 index 000000000000..3a5e6df70677 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sun9i-de.txt @@ -0,0 +1,28 @@ +Allwinner A80 Display Engine Clock Control Binding +------------------------------------ + +Required properties : +- compatible: must contain one of the following compatibles: + - "allwinner,sun9i-a80-de-clocks" + +- reg: Must contain the registers base address and length +- clocks: phandle to the clocks feeding the display engine subsystem. + Three are needed: + - "mod": the display engine module clock + - "dram": the DRAM bus clock for the system + - "bus": the bus clock for the whole display engine subsystem +- clock-names: Must contain the clock names described just above +- resets: phandle to the reset control for the display engine subsystem. +- #clock-cells : must contain 1 +- #reset-cells : must contain 1 + +Example: +de_clocks: clock@03000000 { + compatible = "allwinner,sun9i-a80-de-clks"; + reg = <0x03000000 0x30>; + clocks = <&ccu CLK_DE>, <&ccu CLK_SDRAM>, <&ccu CLK_BUS_DE>; + clock-names = "mod", "dram", "bus"; + resets = <&ccu RST_BUS_DE>; + #clock-cells = <1>; + #reset-cells = <1>; +}; diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile index 8f37ef7fb67d..6feaac0c5600 100644 --- a/drivers/clk/sunxi-ng/Makefile +++ b/drivers/clk/sunxi-ng/Makefile @@ -26,4 +26,5 @@ obj-$(CONFIG_SUN8I_A33_CCU) += ccu-sun8i-a33.o obj-$(CONFIG_SUN8I_H3_CCU) += ccu-sun8i-h3.o obj-$(CONFIG_SUN8I_V3S_CCU) += ccu-sun8i-v3s.o obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80.o +obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80-de.o obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80-usb.o diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c new file mode 100644 index 000000000000..3fc27db0a49a --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c @@ -0,0 +1,283 @@ +/* + * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/reset.h> + +#include "ccu_common.h" +#include "ccu_div.h" +#include "ccu_gate.h" +#include "ccu_reset.h" + +#include "ccu-sun9i-a80-de.h" + +static SUNXI_CCU_GATE(fe0_clk, "fe0", "fe0-div", + 0x00, BIT(0), 0); +static SUNXI_CCU_GATE(fe1_clk, "fe1", "fe1-div", + 0x00, BIT(1), 0); +static SUNXI_CCU_GATE(fe2_clk, "fe2", "fe2-div", + 0x00, BIT(2), 0); +static SUNXI_CCU_GATE(iep_deu0_clk, "iep-deu0", "de", + 0x00, BIT(4), 0); +static SUNXI_CCU_GATE(iep_deu1_clk, "iep-deu1", "de", + 0x00, BIT(5), 0); +static SUNXI_CCU_GATE(be0_clk, "be0", "be0-div", + 0x00, BIT(8), 0); +static SUNXI_CCU_GATE(be1_clk, "be1", "be1-div", + 0x00, BIT(9), 0); +static SUNXI_CCU_GATE(be2_clk, "be2", "be2-div", + 0x00, BIT(10), 0); +static SUNXI_CCU_GATE(iep_drc0_clk, "iep-drc0", "de", + 0x00, BIT(12), 0); +static SUNXI_CCU_GATE(iep_drc1_clk, "iep-drc1", "de", + 0x00, BIT(13), 0); +static SUNXI_CCU_GATE(merge_clk, "merge", "de", + 0x00, BIT(20), 0); + +static SUNXI_CCU_GATE(dram_fe0_clk, "dram-fe0", "sdram", + 0x04, BIT(0), 0); +static SUNXI_CCU_GATE(dram_fe1_clk, "dram-fe1", "sdram", + 0x04, BIT(1), 0); +static SUNXI_CCU_GATE(dram_fe2_clk, "dram-fe2", "sdram", + 0x04, BIT(2), 0); +static SUNXI_CCU_GATE(dram_deu0_clk, "dram-deu0", "sdram", + 0x04, BIT(4), 0); +static SUNXI_CCU_GATE(dram_deu1_clk, "dram-deu1", "sdram", + 0x04, BIT(5), 0); +static SUNXI_CCU_GATE(dram_be0_clk, "dram-be0", "sdram", + 0x04, BIT(8), 0); +static SUNXI_CCU_GATE(dram_be1_clk, "dram-be1", "sdram", + 0x04, BIT(9), 0); +static SUNXI_CCU_GATE(dram_be2_clk, "dram-be2", "sdram", + 0x04, BIT(10), 0); +static SUNXI_CCU_GATE(dram_drc0_clk, "dram-drc0", "sdram", + 0x04, BIT(12), 0); +static SUNXI_CCU_GATE(dram_drc1_clk, "dram-drc1", "sdram", + 0x04, BIT(13), 0); + +static SUNXI_CCU_GATE(bus_fe0_clk, "bus-fe0", "bus-de", + 0x08, BIT(0), 0); +static SUNXI_CCU_GATE(bus_fe1_clk, "bus-fe1", "bus-de", + 0x08, BIT(1), 0); +static SUNXI_CCU_GATE(bus_fe2_clk, "bus-fe2", "bus-de", + 0x08, BIT(2), 0); +static SUNXI_CCU_GATE(bus_deu0_clk, "bus-deu0", "bus-de", + 0x08, BIT(4), 0); +static SUNXI_CCU_GATE(bus_deu1_clk, "bus-deu1", "bus-de", + 0x08, BIT(5), 0); +static SUNXI_CCU_GATE(bus_be0_clk, "bus-be0", "bus-de", + 0x08, BIT(8), 0); +static SUNXI_CCU_GATE(bus_be1_clk, "bus-be1", "bus-de", + 0x08, BIT(9), 0); +static SUNXI_CCU_GATE(bus_be2_clk, "bus-be2", "bus-de", + 0x08, BIT(10), 0); +static SUNXI_CCU_GATE(bus_drc0_clk, "bus-drc0", "bus-de", + 0x08, BIT(12), 0); +static SUNXI_CCU_GATE(bus_drc1_clk, "bus-drc1", "bus-de", + 0x08, BIT(13), 0); + +static SUNXI_CCU_M(fe0_div_clk, "fe0-div", "de", 0x20, 0, 4, 0); +static SUNXI_CCU_M(fe1_div_clk, "fe1-div", "de", 0x20, 4, 4, 0); +static SUNXI_CCU_M(fe2_div_clk, "fe2-div", "de", 0x20, 8, 4, 0); +static SUNXI_CCU_M(be0_div_clk, "be0-div", "de", 0x20, 16, 4, 0); +static SUNXI_CCU_M(be1_div_clk, "be1-div", "de", 0x20, 20, 4, 0); +static SUNXI_CCU_M(be2_div_clk, "be2-div", "de", 0x20, 24, 4, 0); + +static struct ccu_common *sun9i_a80_de_clks[] = { + &fe0_clk.common, + &fe1_clk.common, + &fe2_clk.common, + &iep_deu0_clk.common, + &iep_deu1_clk.common, + &be0_clk.common, + &be1_clk.common, + &be2_clk.common, + &iep_drc0_clk.common, + &iep_drc1_clk.common, + &merge_clk.common, + + &dram_fe0_clk.common, + &dram_fe1_clk.common, + &dram_fe2_clk.common, + &dram_deu0_clk.common, + &dram_deu1_clk.common, + &dram_be0_clk.common, + &dram_be1_clk.common, + &dram_be2_clk.common, + &dram_drc0_clk.common, + &dram_drc1_clk.common, + + &bus_fe0_clk.common, + &bus_fe1_clk.common, + &bus_fe2_clk.common, + &bus_deu0_clk.common, + &bus_deu1_clk.common, + &bus_be0_clk.common, + &bus_be1_clk.common, + &bus_be2_clk.common, + &bus_drc0_clk.common, + &bus_drc1_clk.common, + + &fe0_div_clk.common, + &fe1_div_clk.common, + &fe2_div_clk.common, + &be0_div_clk.common, + &be1_div_clk.common, + &be2_div_clk.common, +}; + +static struct clk_hw_onecell_data sun9i_a80_de_hw_clks = { + .hws = { + [CLK_FE0] = &fe0_clk.common.hw, + [CLK_FE1] = &fe1_clk.common.hw, + [CLK_FE2] = &fe2_clk.common.hw, + [CLK_IEP_DEU0] = &iep_deu0_clk.common.hw, + [CLK_IEP_DEU1] = &iep_deu1_clk.common.hw, + [CLK_BE0] = &be0_clk.common.hw, + [CLK_BE1] = &be1_clk.common.hw, + [CLK_BE2] = &be2_clk.common.hw, + [CLK_IEP_DRC0] = &iep_drc0_clk.common.hw, + [CLK_IEP_DRC1] = &iep_drc1_clk.common.hw, + [CLK_MERGE] = &merge_clk.common.hw, + + [CLK_DRAM_FE0] = &dram_fe0_clk.common.hw, + [CLK_DRAM_FE1] = &dram_fe1_clk.common.hw, + [CLK_DRAM_FE2] = &dram_fe2_clk.common.hw, + [CLK_DRAM_DEU0] = &dram_deu0_clk.common.hw, + [CLK_DRAM_DEU1] = &dram_deu1_clk.common.hw, + [CLK_DRAM_BE0] = &dram_be0_clk.common.hw, + [CLK_DRAM_BE1] = &dram_be1_clk.common.hw, + [CLK_DRAM_BE2] = &dram_be2_clk.common.hw, + [CLK_DRAM_DRC0] = &dram_drc0_clk.common.hw, + [CLK_DRAM_DRC1] = &dram_drc1_clk.common.hw, + + [CLK_BUS_FE0] = &bus_fe0_clk.common.hw, + [CLK_BUS_FE1] = &bus_fe1_clk.common.hw, + [CLK_BUS_FE2] = &bus_fe2_clk.common.hw, + [CLK_BUS_DEU0] = &bus_deu0_clk.common.hw, + [CLK_BUS_DEU1] = &bus_deu1_clk.common.hw, + [CLK_BUS_BE0] = &bus_be0_clk.common.hw, + [CLK_BUS_BE1] = &bus_be1_clk.common.hw, + [CLK_BUS_BE2] = &bus_be2_clk.common.hw, + [CLK_BUS_DRC0] = &bus_drc0_clk.common.hw, + [CLK_BUS_DRC1] = &bus_drc1_clk.common.hw, + + [CLK_FE0_DIV] = &fe0_div_clk.common.hw, + [CLK_FE1_DIV] = &fe1_div_clk.common.hw, + [CLK_FE2_DIV] = &fe2_div_clk.common.hw, + [CLK_BE0_DIV] = &be0_div_clk.common.hw, + [CLK_BE1_DIV] = &be1_div_clk.common.hw, + [CLK_BE2_DIV] = &be2_div_clk.common.hw, + }, + .num = CLK_NUMBER, +}; + +static struct ccu_reset_map sun9i_a80_de_resets[] = { + [RST_FE0] = { 0x0c, BIT(0) }, + [RST_FE1] = { 0x0c, BIT(1) }, + [RST_FE2] = { 0x0c, BIT(2) }, + [RST_DEU0] = { 0x0c, BIT(4) }, + [RST_DEU1] = { 0x0c, BIT(5) }, + [RST_BE0] = { 0x0c, BIT(8) }, + [RST_BE1] = { 0x0c, BIT(9) }, + [RST_BE2] = { 0x0c, BIT(10) }, + [RST_DRC0] = { 0x0c, BIT(12) }, + [RST_DRC1] = { 0x0c, BIT(13) }, + [RST_MERGE] = { 0x0c, BIT(20) }, +}; + +static const struct sunxi_ccu_desc sun9i_a80_de_clk_desc = { + .ccu_clks = sun9i_a80_de_clks, + .num_ccu_clks = ARRAY_SIZE(sun9i_a80_de_clks), + + .hw_clks = &sun9i_a80_de_hw_clks, + + .resets = sun9i_a80_de_resets, + .num_resets = ARRAY_SIZE(sun9i_a80_de_resets), +}; + +static int sun9i_a80_de_clk_probe(struct platform_device *pdev) +{ + struct resource *res; + struct clk *bus_clk; + struct reset_control *rstc; + void __iomem *reg; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + reg = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(reg)) + return PTR_ERR(reg); + + bus_clk = devm_clk_get(&pdev->dev, "bus"); + if (IS_ERR(bus_clk)) { + ret = PTR_ERR(bus_clk); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret); + return ret; + } + + rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(rstc)) { + ret = PTR_ERR(bus_clk); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Couldn't get reset control: %d\n", ret); + return ret; + } + + /* The bus clock needs to be enabled for us to access the registers */ + ret = clk_prepare_enable(bus_clk); + if (ret) { + dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret); + return ret; + } + + /* The reset control needs to be asserted for the controls to work */ + ret = reset_control_deassert(rstc); + if (ret) { + dev_err(&pdev->dev, + "Couldn't deassert reset control: %d\n", ret); + goto err_disable_clk; + } + + ret = sunxi_ccu_probe(pdev->dev.of_node, reg, + &sun9i_a80_de_clk_desc); + if (ret) + goto err_assert_reset; + + return 0; + +err_assert_reset: + reset_control_assert(rstc); +err_disable_clk: + clk_disable_unprepare(bus_clk); + return ret; +} + +static const struct of_device_id sun9i_a80_de_clk_ids[] = { + { .compatible = "allwinner,sun9i-a80-de-clks" }, + { } +}; + +static struct platform_driver sun9i_a80_de_clk_driver = { + .probe = sun9i_a80_de_clk_probe, + .driver = { + .name = "sun9i-a80-de-clks", + .of_match_table = sun9i_a80_de_clk_ids, + }, +}; +builtin_platform_driver(sun9i_a80_de_clk_driver); diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h new file mode 100644 index 000000000000..a4769041e40f --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h @@ -0,0 +1,33 @@ +/* + * Copyright 2016 Chen-Yu Tsai + * + * Chen-Yu Tsai <wens@csie.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _CCU_SUN9I_A80_DE_H_ +#define _CCU_SUN9I_A80_DE_H_ + +#include <dt-bindings/clock/sun9i-a80-de.h> +#include <dt-bindings/reset/sun9i-a80-de.h> + +/* Intermediary clock dividers are not exported */ +#define CLK_FE0_DIV 31 +#define CLK_FE1_DIV 32 +#define CLK_FE2_DIV 33 +#define CLK_BE0_DIV 34 +#define CLK_BE1_DIV 35 +#define CLK_BE2_DIV 36 + +#define CLK_NUMBER (CLK_BE2_DIV + 1) + +#endif /* _CCU_SUN9I_A80_DE_H_ */ diff --git a/include/dt-bindings/clock/sun9i-a80-de.h b/include/dt-bindings/clock/sun9i-a80-de.h new file mode 100644 index 000000000000..3dad6c3cd131 --- /dev/null +++ b/include/dt-bindings/clock/sun9i-a80-de.h @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2016 Chen-Yu Tsai <wens@csie.org> + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef _DT_BINDINGS_CLOCK_SUN9I_A80_DE_H_ +#define _DT_BINDINGS_CLOCK_SUN9I_A80_DE_H_ + +#define CLK_FE0 0 +#define CLK_FE1 1 +#define CLK_FE2 2 +#define CLK_IEP_DEU0 3 +#define CLK_IEP_DEU1 4 +#define CLK_BE0 5 +#define CLK_BE1 6 +#define CLK_BE2 7 +#define CLK_IEP_DRC0 8 +#define CLK_IEP_DRC1 9 +#define CLK_MERGE 10 + +#define CLK_DRAM_FE0 11 +#define CLK_DRAM_FE1 12 +#define CLK_DRAM_FE2 13 +#define CLK_DRAM_DEU0 14 +#define CLK_DRAM_DEU1 15 +#define CLK_DRAM_BE0 16 +#define CLK_DRAM_BE1 17 +#define CLK_DRAM_BE2 18 +#define CLK_DRAM_DRC0 19 +#define CLK_DRAM_DRC1 20 + +#define CLK_BUS_FE0 21 +#define CLK_BUS_FE1 22 +#define CLK_BUS_FE2 23 +#define CLK_BUS_DEU0 24 +#define CLK_BUS_DEU1 25 +#define CLK_BUS_BE0 26 +#define CLK_BUS_BE1 27 +#define CLK_BUS_BE2 28 +#define CLK_BUS_DRC0 29 +#define CLK_BUS_DRC1 30 + +#endif /* _DT_BINDINGS_CLOCK_SUN9I_A80_DE_H_ */ diff --git a/include/dt-bindings/reset/sun9i-a80-de.h b/include/dt-bindings/reset/sun9i-a80-de.h new file mode 100644 index 000000000000..205072770171 --- /dev/null +++ b/include/dt-bindings/reset/sun9i-a80-de.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2016 Chen-Yu Tsai <wens@csie.org> + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef _DT_BINDINGS_RESET_SUN9I_A80_DE_H_ +#define _DT_BINDINGS_RESET_SUN9I_A80_DE_H_ + +#define RST_FE0 0 +#define RST_FE1 1 +#define RST_FE2 2 +#define RST_DEU0 3 +#define RST_DEU1 4 +#define RST_BE0 5 +#define RST_BE1 6 +#define RST_BE2 7 +#define RST_DRC0 8 +#define RST_DRC1 9 +#define RST_MERGE 10 + +#endif /* _DT_BINDINGS_RESET_SUN9I_A80_DE_H_ */

[07/11] clk: sunxi-ng: Add A80 Display Engine CCU

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