diff options
| -rw-r--r-- | arch/arm/include/asm/arch-tegra/pwm.h | 32 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/board2.c | 27 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/pwm.c | 89 |
4 files changed, 2 insertions, 147 deletions
diff --git a/arch/arm/include/asm/arch-tegra/pwm.h b/arch/arm/include/asm/arch-tegra/pwm.h index eb2e465772..5a2d9f3a9c 100644 --- a/arch/arm/include/asm/arch-tegra/pwm.h +++ b/arch/arm/include/asm/arch-tegra/pwm.h @@ -27,36 +27,4 @@ struct pwm_ctlr { #define PWM_DIVIDER_SHIFT 0 #define PWM_DIVIDER_MASK (0x1FFF << PWM_DIVIDER_SHIFT) -#ifndef CONFIG_PWM -/** - * Program the PWM with the given parameters. - * - * @param channel PWM channel to update - * @param rate Clock rate to use for PWM, or 0 to leave alone - * @param pulse_width high pulse width: 0=always low, 1=1/256 pulse high, - * n = n/256 pulse high - * @param freq_divider frequency divider value (1 to use rate as is) - */ -void pwm_enable(unsigned channel, int rate, int pulse_width, int freq_divider); - -/** - * Request a pwm channel as referenced by a device tree node. - * - * This channel can then be passed to pwm_enable(). - * - * @param blob Device tree blob - * @param node Node containing reference to pwm - * @param prop_name Property name of pwm reference - * @return channel number, if ok, else -1 - */ -int pwm_request(const void *blob, int node, const char *prop_name); - -/** - * Set up the pwm controller, by looking it up in the fdt. - * - * @return 0 if ok, -1 if the device tree node was not found or invalid. - */ -int pwm_init(const void *blob); -#endif - #endif /* __ASM_ARCH_TEGRA_PWM_H */ diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 2be6ef41ff..b2dbc6999c 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -12,7 +12,6 @@ obj-y += spl.o obj-y += cpu.o else obj-$(CONFIG_CMD_ENTERRCM) += cmd_enterrcm.o -obj-$(CONFIG_PWM_TEGRA) += pwm.o endif obj-$(CONFIG_ARM64) += arm64-mmu.o diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c index c03f3e2052..ac274e17e8 100644 --- a/arch/arm/mach-tegra/board2.c +++ b/arch/arm/mach-tegra/board2.c @@ -13,15 +13,9 @@ #include <linux/sizes.h> #include <asm/io.h> #include <asm/arch/clock.h> -#ifdef CONFIG_LCD -#include <asm/arch/display.h> -#endif #include <asm/arch/funcmux.h> #include <asm/arch/pinmux.h> #include <asm/arch/pmu.h> -#ifdef CONFIG_PWM_TEGRA -#include <asm/arch/pwm.h> -#endif #include <asm/arch/tegra.h> #include <asm/arch-tegra/ap.h> #include <asm/arch-tegra/board.h> @@ -135,16 +129,9 @@ int board_init(void) #endif /* Init is handled automatically in the driver-model case */ -#if defined(CONFIG_PWM_TEGRA) && !defined(CONFIG_PWM) - if (pwm_init(gd->fdt_blob)) - debug("%s: Failed to init pwm\n", __func__); -#endif -#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO) +#if defined(CONFIG_DM_VIDEO) pin_mux_display(); #endif -#ifdef CONFIG_LCD - tegra_lcd_check_next_stage(gd->fdt_blob, 0); -#endif /* boot param addr */ gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100); @@ -171,15 +158,12 @@ int board_init(void) pin_mux_usb(); #endif -#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO) +#if defined(CONFIG_DM_VIDEO) board_id = tegra_board_id(); err = tegra_lcd_pmic_init(board_id); if (err) return err; #endif -#ifdef CONFIG_LCD - tegra_lcd_check_next_stage(gd->fdt_blob, 0); -#endif #ifdef CONFIG_TEGRA_NAND pin_mux_nand(); @@ -226,9 +210,6 @@ int board_early_init_f(void) /* Initialize periph GPIOs */ gpio_early_init(); gpio_early_init_uart(); -#ifdef CONFIG_LCD - tegra_lcd_early_init(gd->fdt_blob); -#endif return 0; } @@ -236,10 +217,6 @@ int board_early_init_f(void) int board_late_init(void) { -#ifdef CONFIG_LCD - /* Make sure we finish initing the LCD */ - tegra_lcd_check_next_stage(gd->fdt_blob, 1); -#endif #if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE) if (tegra_cpu_is_non_secure()) { printf("CPU is in NS mode\n"); diff --git a/arch/arm/mach-tegra/pwm.c b/arch/arm/mach-tegra/pwm.c deleted file mode 100644 index 1c38fc1784..0000000000 --- a/arch/arm/mach-tegra/pwm.c +++ /dev/null @@ -1,89 +0,0 @@ -/* - * Tegra pulse width frequency modulator definitions - * - * Copyright (c) 2011 The Chromium OS Authors. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <fdtdec.h> -#include <asm/io.h> -#include <asm/arch/clock.h> -#include <asm/arch/pwm.h> - -struct pwm_info { - struct pwm_ctlr *pwm; /* Registers for our pwm controller */ - int pwm_node; /* PWM device tree node */ -} local; - -void pwm_enable(unsigned channel, int rate, int pulse_width, int freq_divider) -{ - u32 reg; - - assert(channel < PWM_NUM_CHANNELS); - - /* TODO: Can we use clock_adjust_periph_pll_div() here? */ - if (rate) { - clock_start_periph_pll(PERIPH_ID_PWM, CLOCK_ID_SFROM32KHZ, - rate); - } - - reg = PWM_ENABLE_MASK; - reg |= pulse_width << PWM_WIDTH_SHIFT; - reg |= freq_divider << PWM_DIVIDER_SHIFT; - writel(reg, &local.pwm[channel].control); - debug("%s: channel=%d, rate=%d\n", __func__, channel, rate); -} - -int pwm_request(const void *blob, int node, const char *prop_name) -{ - int pwm_node; - u32 data[3]; - - if (fdtdec_get_int_array(blob, node, prop_name, data, - ARRAY_SIZE(data))) { - debug("%s: Cannot decode PWM property '%s'\n", __func__, - prop_name); - return -1; - } - - pwm_node = fdt_node_offset_by_phandle(blob, data[0]); - if (pwm_node != local.pwm_node) { - debug("%s: PWM property '%s' phandle %d not recognised" - "- expecting %d\n", __func__, prop_name, data[0], - local.pwm_node); - return -1; - } - if (data[1] >= PWM_NUM_CHANNELS) { - debug("%s: PWM property '%s': invalid channel %u\n", __func__, - prop_name, data[1]); - return -1; - } - - /* - * TODO: We could maintain a list of requests, but it might not be - * worth it for U-Boot. - */ - return data[1]; -} - -int pwm_init(const void *blob) -{ - local.pwm_node = fdtdec_next_compatible(blob, 0, - COMPAT_NVIDIA_TEGRA20_PWM); - if (local.pwm_node < 0) { - debug("%s: Cannot find device tree node\n", __func__); - return -1; - } - - local.pwm = (struct pwm_ctlr *)fdtdec_get_addr(blob, local.pwm_node, - "reg"); - if (local.pwm == (struct pwm_ctlr *)FDT_ADDR_T_NONE) { - debug("%s: Cannot find pwm reg address\n", __func__); - return -1; - } - debug("Tegra PWM at %p, node %d\n", local.pwm, local.pwm_node); - - return 0; -} |
