1 /* $NetBSD: sunxi_de2_ccu.c,v 1.3 2019/01/31 01:49:28 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2019 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 31 __KERNEL_RCSID(1, "$NetBSD: sunxi_de2_ccu.c,v 1.3 2019/01/31 01:49:28 jmcneill Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/device.h> 36 #include <sys/systm.h> 37 38 #include <dev/fdt/fdtvar.h> 39 40 #include <arm/sunxi/sunxi_ccu.h> 41 #include <arm/sunxi/sunxi_de2_ccu.h> 42 43 static int sunxi_de2_ccu_match(device_t, cfdata_t, void *); 44 static void sunxi_de2_ccu_attach(device_t, device_t, void *); 45 46 CFATTACH_DECL_NEW(sunxi_de2ccu, sizeof(struct sunxi_ccu_softc), 47 sunxi_de2_ccu_match, sunxi_de2_ccu_attach, NULL, NULL); 48 49 static struct sunxi_ccu_reset sun8i_h3_de2_ccu_resets[] = { 50 SUNXI_CCU_RESET(DE2_RST_MIXER0, 0x08, 0), 51 SUNXI_CCU_RESET(DE2_RST_WB, 0x08, 2), 52 }; 53 54 static struct sunxi_ccu_reset sun50i_a64_de2_ccu_resets[] = { 55 SUNXI_CCU_RESET(DE2_RST_MIXER0, 0x08, 0), 56 SUNXI_CCU_RESET(DE2_RST_MIXER1, 0x08, 1), 57 SUNXI_CCU_RESET(DE2_RST_WB, 0x08, 2), 58 }; 59 60 static const char *mod_parents[] = { "mod" }; 61 62 static struct sunxi_ccu_clk sun8i_h3_de2_ccu_clks[] = { 63 SUNXI_CCU_GATE(DE2_CLK_BUS_MIXER0, "bus-mixer0", "bus", 0x04, 0), 64 SUNXI_CCU_GATE(DE2_CLK_BUS_MIXER1, "bus-mixer1", "bus", 0x04, 1), 65 SUNXI_CCU_GATE(DE2_CLK_BUS_WB, "bus-wb", "bus", 0x04, 2), 66 67 SUNXI_CCU_DIV(DE2_CLK_MIXER0_DIV, "mixer0-div", mod_parents, 68 0x0c, __BITS(3,0), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 69 SUNXI_CCU_DIV(DE2_CLK_MIXER1_DIV, "mixer1-div", mod_parents, 70 0x0c, __BITS(7,4), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 71 SUNXI_CCU_DIV(DE2_CLK_WB_DIV, "wb-div", mod_parents, 72 0x0c, __BITS(11,8), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 73 74 SUNXI_CCU_GATE(DE2_CLK_MIXER0, "mixer0", "mixer0-div", 0x00, 0), 75 SUNXI_CCU_GATE(DE2_CLK_MIXER1, "mixer1", "mixer1-div", 0x00, 1), 76 SUNXI_CCU_GATE(DE2_CLK_WB, "wb", "wb-div", 0x00, 2), 77 }; 78 79 struct sunxi_de2_ccu_config { 80 struct sunxi_ccu_reset *resets; 81 u_int nresets; 82 struct sunxi_ccu_clk *clks; 83 u_int nclks; 84 }; 85 86 static const struct sunxi_de2_ccu_config sun8i_h3_de2_config = { 87 .resets = sun8i_h3_de2_ccu_resets, 88 .nresets = __arraycount(sun8i_h3_de2_ccu_resets), 89 .clks = sun8i_h3_de2_ccu_clks, 90 .nclks = __arraycount(sun8i_h3_de2_ccu_clks), 91 }; 92 93 static const struct sunxi_de2_ccu_config sun50i_a64_de2_config = { 94 .resets = sun50i_a64_de2_ccu_resets, 95 .nresets = __arraycount(sun50i_a64_de2_ccu_resets), 96 .clks = sun8i_h3_de2_ccu_clks, 97 .nclks = __arraycount(sun8i_h3_de2_ccu_clks), 98 }; 99 100 static const struct of_compat_data compat_data[] = { 101 { "allwinner,sun8i-h3-de2-clk", (uintptr_t)&sun8i_h3_de2_config }, 102 { "allwinner,sun50i-a64-de2-clk", (uintptr_t)&sun50i_a64_de2_config }, 103 { "allwinner,sun50i-h5-de2-clk", (uintptr_t)&sun50i_a64_de2_config }, 104 { NULL } 105 }; 106 107 static int 108 sunxi_de2_ccu_match(device_t parent, cfdata_t cf, void *aux) 109 { 110 struct fdt_attach_args * const faa = aux; 111 112 return of_match_compat_data(faa->faa_phandle, compat_data); 113 } 114 115 static void 116 sunxi_de2_ccu_attach(device_t parent, device_t self, void *aux) 117 { 118 struct sunxi_ccu_softc * const sc = device_private(self); 119 struct fdt_attach_args * const faa = aux; 120 const int phandle = faa->faa_phandle; 121 const struct sunxi_de2_ccu_config *conf; 122 struct clk *clk_bus, *clk_mod; 123 struct fdtbus_reset *rst; 124 125 sc->sc_dev = self; 126 sc->sc_phandle = phandle; 127 sc->sc_bst = faa->faa_bst; 128 129 conf = (void *)of_search_compatible(phandle, compat_data)->data; 130 131 sc->sc_resets = conf->resets; 132 sc->sc_nresets = conf->nresets; 133 sc->sc_clks = conf->clks; 134 sc->sc_nclks = conf->nclks; 135 136 clk_bus = fdtbus_clock_get(phandle, "bus"); 137 if (clk_bus == NULL || clk_enable(clk_bus) != 0) { 138 aprint_error(": couldn't enable bus clock\n"); 139 return; 140 } 141 clk_mod = fdtbus_clock_get(phandle, "mod"); 142 if (clk_mod == NULL || clk_enable(clk_mod) != 0) { 143 aprint_error(": couldn't enable mod clock\n"); 144 return; 145 } 146 rst = fdtbus_reset_get_index(phandle, 0); 147 if (rst == NULL || fdtbus_reset_deassert(rst) != 0) { 148 aprint_error(": couldn't de-assert reset\n"); 149 return; 150 } 151 152 if (sunxi_ccu_attach(sc) != 0) 153 return; 154 155 aprint_naive("\n"); 156 aprint_normal(": DE2 CCU\n"); 157 158 sunxi_ccu_print(sc); 159 } 160