| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (c) 2018 BayLibre, SAS |
| * Author: Neil Armstrong <narmstrong@baylibre.com> |
| */ |
| |
| #include <linux/of_address.h> |
| #include <linux/platform_device.h> |
| #include <linux/bitfield.h> |
| #include <linux/seq_file.h> |
| #include <linux/debugfs.h> |
| #include <linux/regmap.h> |
| #include <linux/module.h> |
| |
| static DEFINE_MUTEX(measure_lock); |
| |
| #define MSR_CLK_DUTY 0x0 |
| #define MSR_CLK_REG0 0x4 |
| #define MSR_CLK_REG1 0x8 |
| #define MSR_CLK_REG2 0xc |
| |
| #define MSR_DURATION GENMASK(15, 0) |
| #define MSR_ENABLE BIT(16) |
| #define MSR_CONT BIT(17) /* continuous measurement */ |
| #define MSR_INTR BIT(18) /* interrupts */ |
| #define MSR_RUN BIT(19) |
| #define MSR_CLK_SRC GENMASK(26, 20) |
| #define MSR_BUSY BIT(31) |
| |
| #define MSR_VAL_MASK GENMASK(15, 0) |
| |
| #define DIV_MIN 32 |
| #define DIV_STEP 32 |
| #define DIV_MAX 640 |
| |
| #define CLK_MSR_MAX 128 |
| |
| struct meson_msr_id { |
| struct meson_msr *priv; |
| unsigned int id; |
| const char *name; |
| }; |
| |
| struct meson_msr { |
| struct regmap *regmap; |
| struct meson_msr_id msr_table[CLK_MSR_MAX]; |
| }; |
| |
| #define CLK_MSR_ID(__id, __name) \ |
| [__id] = {.id = __id, .name = __name,} |
| |
| static struct meson_msr_id clk_msr_m8[CLK_MSR_MAX] = { |
| CLK_MSR_ID(0, "ring_osc_out_ee0"), |
| CLK_MSR_ID(1, "ring_osc_out_ee1"), |
| CLK_MSR_ID(2, "ring_osc_out_ee2"), |
| CLK_MSR_ID(3, "a9_ring_osck"), |
| CLK_MSR_ID(6, "vid_pll"), |
| CLK_MSR_ID(7, "clk81"), |
| CLK_MSR_ID(8, "encp"), |
| CLK_MSR_ID(9, "encl"), |
| CLK_MSR_ID(11, "eth_rmii"), |
| CLK_MSR_ID(13, "amclk"), |
| CLK_MSR_ID(14, "fec_clk_0"), |
| CLK_MSR_ID(15, "fec_clk_1"), |
| CLK_MSR_ID(16, "fec_clk_2"), |
| CLK_MSR_ID(18, "a9_clk_div16"), |
| CLK_MSR_ID(19, "hdmi_sys"), |
| CLK_MSR_ID(20, "rtc_osc_clk_out"), |
| CLK_MSR_ID(21, "i2s_clk_in_src0"), |
| CLK_MSR_ID(22, "clk_rmii_from_pad"), |
| CLK_MSR_ID(23, "hdmi_ch0_tmds"), |
| CLK_MSR_ID(24, "lvds_fifo"), |
| CLK_MSR_ID(26, "sc_clk_int"), |
| CLK_MSR_ID(28, "sar_adc"), |
| CLK_MSR_ID(30, "mpll_clk_test_out"), |
| CLK_MSR_ID(31, "audac_clkpi"), |
| CLK_MSR_ID(32, "vdac"), |
| CLK_MSR_ID(33, "sdhc_rx"), |
| CLK_MSR_ID(34, "sdhc_sd"), |
| CLK_MSR_ID(35, "mali"), |
| CLK_MSR_ID(36, "hdmi_tx_pixel"), |
| CLK_MSR_ID(38, "vdin_meas"), |
| CLK_MSR_ID(39, "pcm_sclk"), |
| CLK_MSR_ID(40, "pcm_mclk"), |
| CLK_MSR_ID(41, "eth_rx_tx"), |
| CLK_MSR_ID(42, "pwm_d"), |
| CLK_MSR_ID(43, "pwm_c"), |
| CLK_MSR_ID(44, "pwm_b"), |
| CLK_MSR_ID(45, "pwm_a"), |
| CLK_MSR_ID(46, "pcm2_sclk"), |
| CLK_MSR_ID(47, "ddr_dpll_pt"), |
| CLK_MSR_ID(48, "pwm_f"), |
| CLK_MSR_ID(49, "pwm_e"), |
| CLK_MSR_ID(59, "hcodec"), |
| CLK_MSR_ID(60, "usb_32k_alt"), |
| CLK_MSR_ID(61, "gpio"), |
| CLK_MSR_ID(62, "vid2_pll"), |
| CLK_MSR_ID(63, "mipi_csi_cfg"), |
| }; |
| |
| static struct meson_msr_id clk_msr_gx[CLK_MSR_MAX] = { |
| CLK_MSR_ID(0, "ring_osc_out_ee_0"), |
| CLK_MSR_ID(1, "ring_osc_out_ee_1"), |
| CLK_MSR_ID(2, "ring_osc_out_ee_2"), |
| CLK_MSR_ID(3, "a53_ring_osc"), |
| CLK_MSR_ID(4, "gp0_pll"), |
| CLK_MSR_ID(6, "enci"), |
| CLK_MSR_ID(7, "clk81"), |
| CLK_MSR_ID(8, "encp"), |
| CLK_MSR_ID(9, "encl"), |
| CLK_MSR_ID(10, "vdac"), |
| CLK_MSR_ID(11, "rgmii_tx"), |
| CLK_MSR_ID(12, "pdm"), |
| CLK_MSR_ID(13, "amclk"), |
| CLK_MSR_ID(14, "fec_0"), |
| CLK_MSR_ID(15, "fec_1"), |
| CLK_MSR_ID(16, "fec_2"), |
| CLK_MSR_ID(17, "sys_pll_div16"), |
| CLK_MSR_ID(18, "sys_cpu_div16"), |
| CLK_MSR_ID(19, "hdmitx_sys"), |
| CLK_MSR_ID(20, "rtc_osc_out"), |
| CLK_MSR_ID(21, "i2s_in_src0"), |
| CLK_MSR_ID(22, "eth_phy_ref"), |
| CLK_MSR_ID(23, "hdmi_todig"), |
| CLK_MSR_ID(26, "sc_int"), |
| CLK_MSR_ID(28, "sar_adc"), |
| CLK_MSR_ID(31, "mpll_test_out"), |
| CLK_MSR_ID(32, "vdec"), |
| CLK_MSR_ID(35, "mali"), |
| CLK_MSR_ID(36, "hdmi_tx_pixel"), |
| CLK_MSR_ID(37, "i958"), |
| CLK_MSR_ID(38, "vdin_meas"), |
| CLK_MSR_ID(39, "pcm_sclk"), |
| CLK_MSR_ID(40, "pcm_mclk"), |
| CLK_MSR_ID(41, "eth_rx_or_rmii"), |
| CLK_MSR_ID(42, "mp0_out"), |
| CLK_MSR_ID(43, "fclk_div5"), |
| CLK_MSR_ID(44, "pwm_b"), |
| CLK_MSR_ID(45, "pwm_a"), |
| CLK_MSR_ID(46, "vpu"), |
| CLK_MSR_ID(47, "ddr_dpll_pt"), |
| CLK_MSR_ID(48, "mp1_out"), |
| CLK_MSR_ID(49, "mp2_out"), |
| CLK_MSR_ID(50, "mp3_out"), |
| CLK_MSR_ID(51, "nand_core"), |
| CLK_MSR_ID(52, "sd_emmc_b"), |
| CLK_MSR_ID(53, "sd_emmc_a"), |
| CLK_MSR_ID(55, "vid_pll_div_out"), |
| CLK_MSR_ID(56, "cci"), |
| CLK_MSR_ID(57, "wave420l_c"), |
| CLK_MSR_ID(58, "wave420l_b"), |
| CLK_MSR_ID(59, "hcodec"), |
| CLK_MSR_ID(60, "alt_32k"), |
| CLK_MSR_ID(61, "gpio_msr"), |
| CLK_MSR_ID(62, "hevc"), |
| CLK_MSR_ID(66, "vid_lock"), |
| CLK_MSR_ID(70, "pwm_f"), |
| CLK_MSR_ID(71, "pwm_e"), |
| CLK_MSR_ID(72, "pwm_d"), |
| CLK_MSR_ID(73, "pwm_c"), |
| CLK_MSR_ID(75, "aoclkx2_int"), |
| CLK_MSR_ID(76, "aoclk_int"), |
| CLK_MSR_ID(77, "rng_ring_osc_0"), |
| CLK_MSR_ID(78, "rng_ring_osc_1"), |
| CLK_MSR_ID(79, "rng_ring_osc_2"), |
| CLK_MSR_ID(80, "rng_ring_osc_3"), |
| CLK_MSR_ID(81, "vapb"), |
| CLK_MSR_ID(82, "ge2d"), |
| }; |
| |
| static struct meson_msr_id clk_msr_axg[CLK_MSR_MAX] = { |
| CLK_MSR_ID(0, "ring_osc_out_ee_0"), |
| CLK_MSR_ID(1, "ring_osc_out_ee_1"), |
| CLK_MSR_ID(2, "ring_osc_out_ee_2"), |
| CLK_MSR_ID(3, "a53_ring_osc"), |
| CLK_MSR_ID(4, "gp0_pll"), |
| CLK_MSR_ID(5, "gp1_pll"), |
| CLK_MSR_ID(7, "clk81"), |
| CLK_MSR_ID(9, "encl"), |
| CLK_MSR_ID(17, "sys_pll_div16"), |
| CLK_MSR_ID(18, "sys_cpu_div16"), |
| CLK_MSR_ID(20, "rtc_osc_out"), |
| CLK_MSR_ID(23, "mmc_clk"), |
| CLK_MSR_ID(28, "sar_adc"), |
| CLK_MSR_ID(31, "mpll_test_out"), |
| CLK_MSR_ID(40, "mod_eth_tx_clk"), |
| CLK_MSR_ID(41, "mod_eth_rx_clk_rmii"), |
| CLK_MSR_ID(42, "mp0_out"), |
| CLK_MSR_ID(43, "fclk_div5"), |
| CLK_MSR_ID(44, "pwm_b"), |
| CLK_MSR_ID(45, "pwm_a"), |
| CLK_MSR_ID(46, "vpu"), |
| CLK_MSR_ID(47, "ddr_dpll_pt"), |
| CLK_MSR_ID(48, "mp1_out"), |
| CLK_MSR_ID(49, "mp2_out"), |
| CLK_MSR_ID(50, "mp3_out"), |
| CLK_MSR_ID(51, "sd_emmm_c"), |
| CLK_MSR_ID(52, "sd_emmc_b"), |
| CLK_MSR_ID(61, "gpio_msr"), |
| CLK_MSR_ID(66, "audio_slv_lrclk_c"), |
| CLK_MSR_ID(67, "audio_slv_lrclk_b"), |
| CLK_MSR_ID(68, "audio_slv_lrclk_a"), |
| CLK_MSR_ID(69, "audio_slv_sclk_c"), |
| CLK_MSR_ID(70, "audio_slv_sclk_b"), |
| CLK_MSR_ID(71, "audio_slv_sclk_a"), |
| CLK_MSR_ID(72, "pwm_d"), |
| CLK_MSR_ID(73, "pwm_c"), |
| CLK_MSR_ID(74, "wifi_beacon"), |
| CLK_MSR_ID(75, "tdmin_lb_lrcl"), |
| CLK_MSR_ID(76, "tdmin_lb_sclk"), |
| CLK_MSR_ID(77, "rng_ring_osc_0"), |
| CLK_MSR_ID(78, "rng_ring_osc_1"), |
| CLK_MSR_ID(79, "rng_ring_osc_2"), |
| CLK_MSR_ID(80, "rng_ring_osc_3"), |
| CLK_MSR_ID(81, "vapb"), |
| CLK_MSR_ID(82, "ge2d"), |
| CLK_MSR_ID(84, "audio_resample"), |
| CLK_MSR_ID(85, "audio_pdm_sys"), |
| CLK_MSR_ID(86, "audio_spdifout"), |
| CLK_MSR_ID(87, "audio_spdifin"), |
| CLK_MSR_ID(88, "audio_lrclk_f"), |
| CLK_MSR_ID(89, "audio_lrclk_e"), |
| CLK_MSR_ID(90, "audio_lrclk_d"), |
| CLK_MSR_ID(91, "audio_lrclk_c"), |
| CLK_MSR_ID(92, "audio_lrclk_b"), |
| CLK_MSR_ID(93, "audio_lrclk_a"), |
| CLK_MSR_ID(94, "audio_sclk_f"), |
| CLK_MSR_ID(95, "audio_sclk_e"), |
| CLK_MSR_ID(96, "audio_sclk_d"), |
| CLK_MSR_ID(97, "audio_sclk_c"), |
| CLK_MSR_ID(98, "audio_sclk_b"), |
| CLK_MSR_ID(99, "audio_sclk_a"), |
| CLK_MSR_ID(100, "audio_mclk_f"), |
| CLK_MSR_ID(101, "audio_mclk_e"), |
| CLK_MSR_ID(102, "audio_mclk_d"), |
| CLK_MSR_ID(103, "audio_mclk_c"), |
| CLK_MSR_ID(104, "audio_mclk_b"), |
| CLK_MSR_ID(105, "audio_mclk_a"), |
| CLK_MSR_ID(106, "pcie_refclk_n"), |
| CLK_MSR_ID(107, "pcie_refclk_p"), |
| CLK_MSR_ID(108, "audio_locker_out"), |
| CLK_MSR_ID(109, "audio_locker_in"), |
| }; |
| |
| static struct meson_msr_id clk_msr_g12a[CLK_MSR_MAX] = { |
| CLK_MSR_ID(0, "ring_osc_out_ee_0"), |
| CLK_MSR_ID(1, "ring_osc_out_ee_1"), |
| CLK_MSR_ID(2, "ring_osc_out_ee_2"), |
| CLK_MSR_ID(3, "sys_cpu_ring_osc"), |
| CLK_MSR_ID(4, "gp0_pll"), |
| CLK_MSR_ID(6, "enci"), |
| CLK_MSR_ID(7, "clk81"), |
| CLK_MSR_ID(8, "encp"), |
| CLK_MSR_ID(9, "encl"), |
| CLK_MSR_ID(10, "vdac"), |
| CLK_MSR_ID(11, "eth_tx"), |
| CLK_MSR_ID(12, "hifi_pll"), |
| CLK_MSR_ID(13, "mod_tcon"), |
| CLK_MSR_ID(14, "fec_0"), |
| CLK_MSR_ID(15, "fec_1"), |
| CLK_MSR_ID(16, "fec_2"), |
| CLK_MSR_ID(17, "sys_pll_div16"), |
| CLK_MSR_ID(18, "sys_cpu_div16"), |
| CLK_MSR_ID(19, "lcd_an_ph2"), |
| CLK_MSR_ID(20, "rtc_osc_out"), |
| CLK_MSR_ID(21, "lcd_an_ph3"), |
| CLK_MSR_ID(22, "eth_phy_ref"), |
| CLK_MSR_ID(23, "mpll_50m"), |
| CLK_MSR_ID(24, "eth_125m"), |
| CLK_MSR_ID(25, "eth_rmii"), |
| CLK_MSR_ID(26, "sc_int"), |
| CLK_MSR_ID(27, "in_mac"), |
| CLK_MSR_ID(28, "sar_adc"), |
| CLK_MSR_ID(29, "pcie_inp"), |
| CLK_MSR_ID(30, "pcie_inn"), |
| CLK_MSR_ID(31, "mpll_test_out"), |
| CLK_MSR_ID(32, "vdec"), |
| CLK_MSR_ID(33, "sys_cpu_ring_osc_1"), |
| CLK_MSR_ID(34, "eth_mpll_50m"), |
| CLK_MSR_ID(35, "mali"), |
| CLK_MSR_ID(36, "hdmi_tx_pixel"), |
| CLK_MSR_ID(37, "cdac"), |
| CLK_MSR_ID(38, "vdin_meas"), |
| CLK_MSR_ID(39, "bt656"), |
| CLK_MSR_ID(41, "eth_rx_or_rmii"), |
| CLK_MSR_ID(42, "mp0_out"), |
| CLK_MSR_ID(43, "fclk_div5"), |
| CLK_MSR_ID(44, "pwm_b"), |
| CLK_MSR_ID(45, "pwm_a"), |
| CLK_MSR_ID(46, "vpu"), |
| CLK_MSR_ID(47, "ddr_dpll_pt"), |
| CLK_MSR_ID(48, "mp1_out"), |
| CLK_MSR_ID(49, "mp2_out"), |
| CLK_MSR_ID(50, "mp3_out"), |
| CLK_MSR_ID(51, "sd_emmc_c"), |
| CLK_MSR_ID(52, "sd_emmc_b"), |
| CLK_MSR_ID(53, "sd_emmc_a"), |
| CLK_MSR_ID(54, "vpu_clkc"), |
| CLK_MSR_ID(55, "vid_pll_div_out"), |
| CLK_MSR_ID(56, "wave420l_a"), |
| CLK_MSR_ID(57, "wave420l_c"), |
| CLK_MSR_ID(58, "wave420l_b"), |
| CLK_MSR_ID(59, "hcodec"), |
| CLK_MSR_ID(61, "gpio_msr"), |
| CLK_MSR_ID(62, "hevcb"), |
| CLK_MSR_ID(63, "dsi_meas"), |
| CLK_MSR_ID(64, "spicc_1"), |
| CLK_MSR_ID(65, "spicc_0"), |
| CLK_MSR_ID(66, "vid_lock"), |
| CLK_MSR_ID(67, "dsi_phy"), |
| CLK_MSR_ID(68, "hdcp22_esm"), |
| CLK_MSR_ID(69, "hdcp22_skp"), |
| CLK_MSR_ID(70, "pwm_f"), |
| CLK_MSR_ID(71, "pwm_e"), |
| CLK_MSR_ID(72, "pwm_d"), |
| CLK_MSR_ID(73, "pwm_c"), |
| CLK_MSR_ID(75, "hevcf"), |
| CLK_MSR_ID(77, "rng_ring_osc_0"), |
| CLK_MSR_ID(78, "rng_ring_osc_1"), |
| CLK_MSR_ID(79, "rng_ring_osc_2"), |
| CLK_MSR_ID(80, "rng_ring_osc_3"), |
| CLK_MSR_ID(81, "vapb"), |
| CLK_MSR_ID(82, "ge2d"), |
| CLK_MSR_ID(83, "co_rx"), |
| CLK_MSR_ID(84, "co_tx"), |
| CLK_MSR_ID(89, "hdmi_todig"), |
| CLK_MSR_ID(90, "hdmitx_sys"), |
| CLK_MSR_ID(91, "sys_cpub_div16"), |
| CLK_MSR_ID(92, "sys_pll_cpub_div16"), |
| CLK_MSR_ID(94, "eth_phy_rx"), |
| CLK_MSR_ID(95, "eth_phy_pll"), |
| CLK_MSR_ID(96, "vpu_b"), |
| CLK_MSR_ID(97, "cpu_b_tmp"), |
| CLK_MSR_ID(98, "ts"), |
| CLK_MSR_ID(99, "ring_osc_out_ee_3"), |
| CLK_MSR_ID(100, "ring_osc_out_ee_4"), |
| CLK_MSR_ID(101, "ring_osc_out_ee_5"), |
| CLK_MSR_ID(102, "ring_osc_out_ee_6"), |
| CLK_MSR_ID(103, "ring_osc_out_ee_7"), |
| CLK_MSR_ID(104, "ring_osc_out_ee_8"), |
| CLK_MSR_ID(105, "ring_osc_out_ee_9"), |
| CLK_MSR_ID(106, "ephy_test"), |
| CLK_MSR_ID(107, "au_dac_g128x"), |
| CLK_MSR_ID(108, "audio_locker_out"), |
| CLK_MSR_ID(109, "audio_locker_in"), |
| CLK_MSR_ID(110, "audio_tdmout_c_sclk"), |
| CLK_MSR_ID(111, "audio_tdmout_b_sclk"), |
| CLK_MSR_ID(112, "audio_tdmout_a_sclk"), |
| CLK_MSR_ID(113, "audio_tdmin_lb_sclk"), |
| CLK_MSR_ID(114, "audio_tdmin_c_sclk"), |
| CLK_MSR_ID(115, "audio_tdmin_b_sclk"), |
| CLK_MSR_ID(116, "audio_tdmin_a_sclk"), |
| CLK_MSR_ID(117, "audio_resample"), |
| CLK_MSR_ID(118, "audio_pdm_sys"), |
| CLK_MSR_ID(119, "audio_spdifout_b"), |
| CLK_MSR_ID(120, "audio_spdifout"), |
| CLK_MSR_ID(121, "audio_spdifin"), |
| CLK_MSR_ID(122, "audio_pdm_dclk"), |
| }; |
| |
| static struct meson_msr_id clk_msr_sm1[CLK_MSR_MAX] = { |
| CLK_MSR_ID(0, "ring_osc_out_ee_0"), |
| CLK_MSR_ID(1, "ring_osc_out_ee_1"), |
| CLK_MSR_ID(2, "ring_osc_out_ee_2"), |
| CLK_MSR_ID(3, "ring_osc_out_ee_3"), |
| CLK_MSR_ID(4, "gp0_pll"), |
| CLK_MSR_ID(5, "gp1_pll"), |
| CLK_MSR_ID(6, "enci"), |
| CLK_MSR_ID(7, "clk81"), |
| CLK_MSR_ID(8, "encp"), |
| CLK_MSR_ID(9, "encl"), |
| CLK_MSR_ID(10, "vdac"), |
| CLK_MSR_ID(11, "eth_tx"), |
| CLK_MSR_ID(12, "hifi_pll"), |
| CLK_MSR_ID(13, "mod_tcon"), |
| CLK_MSR_ID(14, "fec_0"), |
| CLK_MSR_ID(15, "fec_1"), |
| CLK_MSR_ID(16, "fec_2"), |
| CLK_MSR_ID(17, "sys_pll_div16"), |
| CLK_MSR_ID(18, "sys_cpu_div16"), |
| CLK_MSR_ID(19, "lcd_an_ph2"), |
| CLK_MSR_ID(20, "rtc_osc_out"), |
| CLK_MSR_ID(21, "lcd_an_ph3"), |
| CLK_MSR_ID(22, "eth_phy_ref"), |
| CLK_MSR_ID(23, "mpll_50m"), |
| CLK_MSR_ID(24, "eth_125m"), |
| CLK_MSR_ID(25, "eth_rmii"), |
| CLK_MSR_ID(26, "sc_int"), |
| CLK_MSR_ID(27, "in_mac"), |
| CLK_MSR_ID(28, "sar_adc"), |
| CLK_MSR_ID(29, "pcie_inp"), |
| CLK_MSR_ID(30, "pcie_inn"), |
| CLK_MSR_ID(31, "mpll_test_out"), |
| CLK_MSR_ID(32, "vdec"), |
| CLK_MSR_ID(34, "eth_mpll_50m"), |
| CLK_MSR_ID(35, "mali"), |
| CLK_MSR_ID(36, "hdmi_tx_pixel"), |
| CLK_MSR_ID(37, "cdac"), |
| CLK_MSR_ID(38, "vdin_meas"), |
| CLK_MSR_ID(39, "bt656"), |
| CLK_MSR_ID(40, "arm_ring_osc_out_4"), |
| CLK_MSR_ID(41, "eth_rx_or_rmii"), |
| CLK_MSR_ID(42, "mp0_out"), |
| CLK_MSR_ID(43, "fclk_div5"), |
| CLK_MSR_ID(44, "pwm_b"), |
| CLK_MSR_ID(45, "pwm_a"), |
| CLK_MSR_ID(46, "vpu"), |
| CLK_MSR_ID(47, "ddr_dpll_pt"), |
| CLK_MSR_ID(48, "mp1_out"), |
| CLK_MSR_ID(49, "mp2_out"), |
| CLK_MSR_ID(50, "mp3_out"), |
| CLK_MSR_ID(51, "sd_emmc_c"), |
| CLK_MSR_ID(52, "sd_emmc_b"), |
| CLK_MSR_ID(53, "sd_emmc_a"), |
| CLK_MSR_ID(54, "vpu_clkc"), |
| CLK_MSR_ID(55, "vid_pll_div_out"), |
| CLK_MSR_ID(56, "wave420l_a"), |
| CLK_MSR_ID(57, "wave420l_c"), |
| CLK_MSR_ID(58, "wave420l_b"), |
| CLK_MSR_ID(59, "hcodec"), |
| CLK_MSR_ID(60, "arm_ring_osc_out_5"), |
| CLK_MSR_ID(61, "gpio_msr"), |
| CLK_MSR_ID(62, "hevcb"), |
| CLK_MSR_ID(63, "dsi_meas"), |
| CLK_MSR_ID(64, "spicc_1"), |
| CLK_MSR_ID(65, "spicc_0"), |
| CLK_MSR_ID(66, "vid_lock"), |
| CLK_MSR_ID(67, "dsi_phy"), |
| CLK_MSR_ID(68, "hdcp22_esm"), |
| CLK_MSR_ID(69, "hdcp22_skp"), |
| CLK_MSR_ID(70, "pwm_f"), |
| CLK_MSR_ID(71, "pwm_e"), |
| CLK_MSR_ID(72, "pwm_d"), |
| CLK_MSR_ID(73, "pwm_c"), |
| CLK_MSR_ID(74, "arm_ring_osc_out_6"), |
| CLK_MSR_ID(75, "hevcf"), |
| CLK_MSR_ID(76, "arm_ring_osc_out_7"), |
| CLK_MSR_ID(77, "rng_ring_osc_0"), |
| CLK_MSR_ID(78, "rng_ring_osc_1"), |
| CLK_MSR_ID(79, "rng_ring_osc_2"), |
| CLK_MSR_ID(80, "rng_ring_osc_3"), |
| CLK_MSR_ID(81, "vapb"), |
| CLK_MSR_ID(82, "ge2d"), |
| CLK_MSR_ID(83, "co_rx"), |
| CLK_MSR_ID(84, "co_tx"), |
| CLK_MSR_ID(85, "arm_ring_osc_out_8"), |
| CLK_MSR_ID(86, "arm_ring_osc_out_9"), |
| CLK_MSR_ID(87, "mipi_dsi_phy"), |
| CLK_MSR_ID(88, "cis2_adapt"), |
| CLK_MSR_ID(89, "hdmi_todig"), |
| CLK_MSR_ID(90, "hdmitx_sys"), |
| CLK_MSR_ID(91, "nna_core"), |
| CLK_MSR_ID(92, "nna_axi"), |
| CLK_MSR_ID(93, "vad"), |
| CLK_MSR_ID(94, "eth_phy_rx"), |
| CLK_MSR_ID(95, "eth_phy_pll"), |
| CLK_MSR_ID(96, "vpu_b"), |
| CLK_MSR_ID(97, "cpu_b_tmp"), |
| CLK_MSR_ID(98, "ts"), |
| CLK_MSR_ID(99, "arm_ring_osc_out_10"), |
| CLK_MSR_ID(100, "arm_ring_osc_out_11"), |
| CLK_MSR_ID(101, "arm_ring_osc_out_12"), |
| CLK_MSR_ID(102, "arm_ring_osc_out_13"), |
| CLK_MSR_ID(103, "arm_ring_osc_out_14"), |
| CLK_MSR_ID(104, "arm_ring_osc_out_15"), |
| CLK_MSR_ID(105, "arm_ring_osc_out_16"), |
| CLK_MSR_ID(106, "ephy_test"), |
| CLK_MSR_ID(107, "au_dac_g128x"), |
| CLK_MSR_ID(108, "audio_locker_out"), |
| CLK_MSR_ID(109, "audio_locker_in"), |
| CLK_MSR_ID(110, "audio_tdmout_c_sclk"), |
| CLK_MSR_ID(111, "audio_tdmout_b_sclk"), |
| CLK_MSR_ID(112, "audio_tdmout_a_sclk"), |
| CLK_MSR_ID(113, "audio_tdmin_lb_sclk"), |
| CLK_MSR_ID(114, "audio_tdmin_c_sclk"), |
| CLK_MSR_ID(115, "audio_tdmin_b_sclk"), |
| CLK_MSR_ID(116, "audio_tdmin_a_sclk"), |
| CLK_MSR_ID(117, "audio_resample"), |
| CLK_MSR_ID(118, "audio_pdm_sys"), |
| CLK_MSR_ID(119, "audio_spdifout_b"), |
| CLK_MSR_ID(120, "audio_spdifout"), |
| CLK_MSR_ID(121, "audio_spdifin"), |
| CLK_MSR_ID(122, "audio_pdm_dclk"), |
| CLK_MSR_ID(123, "audio_resampled"), |
| CLK_MSR_ID(124, "earcrx_pll"), |
| CLK_MSR_ID(125, "earcrx_pll_test"), |
| CLK_MSR_ID(126, "csi_phy0"), |
| CLK_MSR_ID(127, "csi2_data"), |
| }; |
| |
| static int meson_measure_id(struct meson_msr_id *clk_msr_id, |
| unsigned int duration) |
| { |
| struct meson_msr *priv = clk_msr_id->priv; |
| unsigned int val; |
| int ret; |
| |
| ret = mutex_lock_interruptible(&measure_lock); |
| if (ret) |
| return ret; |
| |
| regmap_write(priv->regmap, MSR_CLK_REG0, 0); |
| |
| /* Set measurement duration */ |
| regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_DURATION, |
| FIELD_PREP(MSR_DURATION, duration - 1)); |
| |
| /* Set ID */ |
| regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_CLK_SRC, |
| FIELD_PREP(MSR_CLK_SRC, clk_msr_id->id)); |
| |
| /* Enable & Start */ |
| regmap_update_bits(priv->regmap, MSR_CLK_REG0, |
| MSR_RUN | MSR_ENABLE, |
| MSR_RUN | MSR_ENABLE); |
| |
| ret = regmap_read_poll_timeout(priv->regmap, MSR_CLK_REG0, |
| val, !(val & MSR_BUSY), 10, 10000); |
| if (ret) { |
| mutex_unlock(&measure_lock); |
| return ret; |
| } |
| |
| /* Disable */ |
| regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_ENABLE, 0); |
| |
| /* Get the value in multiple of gate time counts */ |
| regmap_read(priv->regmap, MSR_CLK_REG2, &val); |
| |
| mutex_unlock(&measure_lock); |
| |
| if (val >= MSR_VAL_MASK) |
| return -EINVAL; |
| |
| return DIV_ROUND_CLOSEST_ULL((val & MSR_VAL_MASK) * 1000000ULL, |
| duration); |
| } |
| |
| static int meson_measure_best_id(struct meson_msr_id *clk_msr_id, |
| unsigned int *precision) |
| { |
| unsigned int duration = DIV_MAX; |
| int ret; |
| |
| /* Start from max duration and down to min duration */ |
| do { |
| ret = meson_measure_id(clk_msr_id, duration); |
| if (ret >= 0) |
| *precision = (2 * 1000000) / duration; |
| else |
| duration -= DIV_STEP; |
| } while (duration >= DIV_MIN && ret == -EINVAL); |
| |
| return ret; |
| } |
| |
| static int clk_msr_show(struct seq_file *s, void *data) |
| { |
| struct meson_msr_id *clk_msr_id = s->private; |
| unsigned int precision = 0; |
| int val; |
| |
| val = meson_measure_best_id(clk_msr_id, &precision); |
| if (val < 0) |
| return val; |
| |
| seq_printf(s, "%d\t+/-%dHz\n", val, precision); |
| |
| return 0; |
| } |
| DEFINE_SHOW_ATTRIBUTE(clk_msr); |
| |
| static int clk_msr_summary_show(struct seq_file *s, void *data) |
| { |
| struct meson_msr_id *msr_table = s->private; |
| unsigned int precision = 0; |
| int val, i; |
| |
| seq_puts(s, " clock rate precision\n"); |
| seq_puts(s, "---------------------------------------------\n"); |
| |
| for (i = 0 ; i < CLK_MSR_MAX ; ++i) { |
| if (!msr_table[i].name) |
| continue; |
| |
| val = meson_measure_best_id(&msr_table[i], &precision); |
| if (val < 0) |
| return val; |
| |
| seq_printf(s, " %-20s %10d +/-%dHz\n", |
| msr_table[i].name, val, precision); |
| } |
| |
| return 0; |
| } |
| DEFINE_SHOW_ATTRIBUTE(clk_msr_summary); |
| |
| static const struct regmap_config meson_clk_msr_regmap_config = { |
| .reg_bits = 32, |
| .val_bits = 32, |
| .reg_stride = 4, |
| .max_register = MSR_CLK_REG2, |
| }; |
| |
| static int meson_msr_probe(struct platform_device *pdev) |
| { |
| const struct meson_msr_id *match_data; |
| struct meson_msr *priv; |
| struct resource *res; |
| struct dentry *root, *clks; |
| void __iomem *base; |
| int i; |
| |
| priv = devm_kzalloc(&pdev->dev, sizeof(struct meson_msr), |
| GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| match_data = device_get_match_data(&pdev->dev); |
| if (!match_data) { |
| dev_err(&pdev->dev, "failed to get match data\n"); |
| return -ENODEV; |
| } |
| |
| memcpy(priv->msr_table, match_data, sizeof(priv->msr_table)); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| base = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(base)) |
| return PTR_ERR(base); |
| |
| priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, |
| &meson_clk_msr_regmap_config); |
| if (IS_ERR(priv->regmap)) |
| return PTR_ERR(priv->regmap); |
| |
| root = debugfs_create_dir("meson-clk-msr", NULL); |
| clks = debugfs_create_dir("clks", root); |
| |
| debugfs_create_file("measure_summary", 0444, root, |
| priv->msr_table, &clk_msr_summary_fops); |
| |
| for (i = 0 ; i < CLK_MSR_MAX ; ++i) { |
| if (!priv->msr_table[i].name) |
| continue; |
| |
| priv->msr_table[i].priv = priv; |
| |
| debugfs_create_file(priv->msr_table[i].name, 0444, clks, |
| &priv->msr_table[i], &clk_msr_fops); |
| } |
| |
| return 0; |
| } |
| |
| static const struct of_device_id meson_msr_match_table[] = { |
| { |
| .compatible = "amlogic,meson-gx-clk-measure", |
| .data = (void *)clk_msr_gx, |
| }, |
| { |
| .compatible = "amlogic,meson8-clk-measure", |
| .data = (void *)clk_msr_m8, |
| }, |
| { |
| .compatible = "amlogic,meson8b-clk-measure", |
| .data = (void *)clk_msr_m8, |
| }, |
| { |
| .compatible = "amlogic,meson-axg-clk-measure", |
| .data = (void *)clk_msr_axg, |
| }, |
| { |
| .compatible = "amlogic,meson-g12a-clk-measure", |
| .data = (void *)clk_msr_g12a, |
| }, |
| { |
| .compatible = "amlogic,meson-sm1-clk-measure", |
| .data = (void *)clk_msr_sm1, |
| }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, meson_msr_match_table); |
| |
| static struct platform_driver meson_msr_driver = { |
| .probe = meson_msr_probe, |
| .driver = { |
| .name = "meson_msr", |
| .of_match_table = meson_msr_match_table, |
| }, |
| }; |
| module_platform_driver(meson_msr_driver); |
| MODULE_LICENSE("GPL v2"); |
