1 files changed, 0 insertions, 376 deletions

diff --git a/qemu/roms/u-boot/drivers/input/tegra-kbc.c b/qemu/roms/u-boot/drivers/input/tegra-kbc.c
deleted file mode 100644
index f137f930a..000000000
--- a/qemu/roms/u-boot/drivers/input/tegra-kbc.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- *  (C) Copyright 2011
- *  NVIDIA Corporation <www.nvidia.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <fdtdec.h>
-#include <input.h>
-#include <key_matrix.h>
-#include <stdio_dev.h>
-#include <tegra-kbc.h>
-#include <asm/io.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/funcmux.h>
-#include <asm/arch-tegra/timer.h>
-#include <linux/input.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-enum {
-	KBC_MAX_GPIO		= 24,
-	KBC_MAX_KPENT		= 8,	/* size of keypress entry queue */
-};
-
-#define KBC_FIFO_TH_CNT_SHIFT		14
-#define KBC_DEBOUNCE_CNT_SHIFT		4
-#define KBC_CONTROL_FIFO_CNT_INT_EN	(1 << 3)
-#define KBC_CONTROL_KBC_EN		(1 << 0)
-#define KBC_INT_FIFO_CNT_INT_STATUS	(1 << 2)
-#define KBC_KPENT_VALID			(1 << 7)
-#define KBC_ST_STATUS			(1 << 3)
-
-enum {
-	KBC_DEBOUNCE_COUNT	= 2,
-	KBC_REPEAT_RATE_MS	= 30,
-	KBC_REPEAT_DELAY_MS	= 240,
-	KBC_CLOCK_KHZ		= 32,	/* Keyboard uses a 32KHz clock */
-};
-
-/* keyboard controller config and state */
-static struct keyb {
-	struct input_config input;	/* The input layer */
-	struct key_matrix matrix;	/* The key matrix layer */
-
-	struct kbc_tegra *kbc;		/* tegra keyboard controller */
-	unsigned char inited;		/* 1 if keyboard has been inited */
-	unsigned char first_scan;	/* 1 if this is our first key scan */
-	unsigned char created;		/* 1 if driver has been created */
-
-	/*
-	 * After init we must wait a short time before polling the keyboard.
-	 * This gives the tegra keyboard controller time to react after reset
-	 * and lets us grab keys pressed during reset.
-	 */
-	unsigned int init_dly_ms;	/* Delay before we can read keyboard */
-	unsigned int start_time_ms;	/* Time that we inited (in ms) */
-	unsigned int last_poll_ms;	/* Time we should last polled */
-	unsigned int next_repeat_ms;	/* Next time we repeat a key */
-} config;
-
-/**
- * reads the keyboard fifo for current keypresses
- *
- * @param config	Keyboard config
- * @param fifo		Place to put fifo results
- * @param max_keycodes	Maximum number of key codes to put in the fifo
- * @return number of items put into fifo
- */
-static int tegra_kbc_find_keys(struct keyb *config, int *fifo,
-			       int max_keycodes)
-{
-	struct key_matrix_key keys[KBC_MAX_KPENT], *key;
-	u32 kp_ent = 0;
-	int i;
-
-	for (key = keys, i = 0; i < KBC_MAX_KPENT; i++, key++) {
-		/* Get next word */
-		if (!(i & 3))
-			kp_ent = readl(&config->kbc->kp_ent[i / 4]);
-
-		key->valid = (kp_ent & KBC_KPENT_VALID) != 0;
-		key->row = (kp_ent >> 3) & 0xf;
-		key->col = kp_ent & 0x7;
-
-		/* Shift to get next entry */
-		kp_ent >>= 8;
-	}
-	return key_matrix_decode(&config->matrix, keys, KBC_MAX_KPENT, fifo,
-				 max_keycodes);
-}
-
-/**
- * Process all the keypress sequences in fifo and send key codes
- *
- * The fifo contains zero or more keypress sets. Each set
- * consists of from 1-8 keycodes, representing the keycodes which
- * were simultaneously pressed during that scan.
- *
- * This function works through each set and generates ASCII characters
- * for each. Not that one set may produce more than one ASCII characters -
- * for example holding down 'd' and 'f' at the same time will generate
- * two ASCII characters.
- *
- * Note: if fifo_cnt is 0, we will tell the input layer that no keys are
- * pressed.
- *
- * @param config	Keyboard config
- * @param fifo_cnt	Number of entries in the keyboard fifo
- */
-static void process_fifo(struct keyb *config, int fifo_cnt)
-{
-	int fifo[KBC_MAX_KPENT];
-	int cnt = 0;
-
-	/* Always call input_send_keycodes() at least once */
-	do {
-		if (fifo_cnt)
-			cnt = tegra_kbc_find_keys(config, fifo, KBC_MAX_KPENT);
-
-		input_send_keycodes(&config->input, fifo, cnt);
-	} while (--fifo_cnt > 0);
-}
-
-/**
- * Check the keyboard controller and emit ASCII characters for any keys that
- * are pressed.
- *
- * @param config	Keyboard config
- */
-static void check_for_keys(struct keyb *config)
-{
-	int fifo_cnt;
-
-	if (!config->first_scan &&
-			get_timer(config->last_poll_ms) < KBC_REPEAT_RATE_MS)
-		return;
-	config->last_poll_ms = get_timer(0);
-	config->first_scan = 0;
-
-	/*
-	 * Once we get here we know the keyboard has been scanned. So if there
-	 * scan waiting for us, we know that nothing is held down.
-	 */
-	fifo_cnt = (readl(&config->kbc->interrupt) >> 4) & 0xf;
-	process_fifo(config, fifo_cnt);
-}
-
-/**
- * In order to detect keys pressed on boot, wait for the hardware to
- * complete scanning the keys. This includes time to transition from
- * Wkup mode to Continous polling mode and the repoll time. We can
- * deduct the time that's already elapsed.
- *
- * @param config	Keyboard config
- */
-static void kbd_wait_for_fifo_init(struct keyb *config)
-{
-	if (!config->inited) {
-		unsigned long elapsed_time;
-		long delay_ms;
-
-		elapsed_time = get_timer(config->start_time_ms);
-		delay_ms = config->init_dly_ms - elapsed_time;
-		if (delay_ms > 0) {
-			udelay(delay_ms * 1000);
-			debug("%s: delay %ldms\n", __func__, delay_ms);
-		}
-
-		config->inited = 1;
-	}
-}
-
-/**
- * Check the tegra keyboard, and send any keys that are pressed.
- *
- * This is called by input_tstc() and input_getc() when they need more
- * characters
- *
- * @param input		Input configuration
- * @return 1, to indicate that we have something to look at
- */
-int tegra_kbc_check(struct input_config *input)
-{
-	kbd_wait_for_fifo_init(&config);
-	check_for_keys(&config);
-
-	return 1;
-}
-
-/**
- * Test if keys are available to be read
- *
- * @return 0 if no keys available, 1 if keys are available
- */
-static int kbd_tstc(void)
-{
-	/* Just get input to do this for us */
-	return input_tstc(&config.input);
-}
-
-/**
- * Read a key
- *
- * TODO: U-Boot wants 0 for no key, but Ctrl-@ is a valid key...
- *
- * @return ASCII key code, or 0 if no key, or -1 if error
- */
-static int kbd_getc(void)
-{
-	/* Just get input to do this for us */
-	return input_getc(&config.input);
-}
-
-/* configures keyboard GPIO registers to use the rows and columns */
-static void config_kbc_gpio(struct kbc_tegra *kbc)
-{
-	int i;
-
-	for (i = 0; i < KBC_MAX_GPIO; i++) {
-		u32 row_cfg, col_cfg;
-		u32 r_shift = 5 * (i % 6);
-		u32 c_shift = 4 * (i % 8);
-		u32 r_mask = 0x1f << r_shift;
-		u32 c_mask = 0xf << c_shift;
-		u32 r_offs = i / 6;
-		u32 c_offs = i / 8;
-
-		row_cfg = readl(&kbc->row_cfg[r_offs]);
-		col_cfg = readl(&kbc->col_cfg[c_offs]);
-
-		row_cfg &= ~r_mask;
-		col_cfg &= ~c_mask;
-
-		if (i < config.matrix.num_rows) {
-			row_cfg |= ((i << 1) | 1) << r_shift;
-		} else {
-			col_cfg |= (((i - config.matrix.num_rows) << 1) | 1)
-					<< c_shift;
-		}
-
-		writel(row_cfg, &kbc->row_cfg[r_offs]);
-		writel(col_cfg, &kbc->col_cfg[c_offs]);
-	}
-}
-
-/**
- * Start up the keyboard device
- */
-static void tegra_kbc_open(void)
-{
-	struct kbc_tegra *kbc = config.kbc;
-	unsigned int scan_period;
-	u32 val;
-
-	/*
-	 * We will scan at twice the keyboard repeat rate, so that there is
-	 * always a scan ready when we check it in check_for_keys().
-	 */
-	scan_period = KBC_REPEAT_RATE_MS / 2;
-	writel(scan_period * KBC_CLOCK_KHZ, &kbc->rpt_dly);
-	writel(scan_period * KBC_CLOCK_KHZ, &kbc->init_dly);
-	/*
-	 * Before reading from the keyboard we must wait for the init_dly
-	 * plus the rpt_delay, plus 2ms for the row scan time.
-	 */
-	config.init_dly_ms = scan_period * 2 + 2;
-
-	val = KBC_DEBOUNCE_COUNT << KBC_DEBOUNCE_CNT_SHIFT;
-	val |= 1 << KBC_FIFO_TH_CNT_SHIFT;	/* fifo interrupt threshold */
-	val |= KBC_CONTROL_KBC_EN;		/* enable */
-	writel(val, &kbc->control);
-
-	config.start_time_ms = get_timer(0);
-	config.last_poll_ms = config.next_repeat_ms = get_timer(0);
-	config.first_scan = 1;
-}
-
-/**
- * Set up the tegra keyboard. This is called by the stdio device handler
- *
- * We want to do this init when the keyboard is actually used rather than
- * at start-up, since keyboard input may not currently be selected.
- *
- * Once the keyboard starts there will be a period during which we must
- * wait for the keyboard to init. We do this only when a key is first
- * read - see kbd_wait_for_fifo_init().
- *
- * @return 0 if ok, -ve on error
- */
-static int init_tegra_keyboard(void)
-{
-	/* check if already created */
-	if (config.created)
-		return 0;
-
-#ifdef CONFIG_OF_CONTROL
-	int	node;
-
-	node = fdtdec_next_compatible(gd->fdt_blob, 0,
-					  COMPAT_NVIDIA_TEGRA20_KBC);
-	if (node < 0) {
-		debug("%s: cannot locate keyboard node\n", __func__);
-		return node;
-	}
-	config.kbc = (struct kbc_tegra *)fdtdec_get_addr(gd->fdt_blob,
-		       node, "reg");
-	if ((fdt_addr_t)config.kbc == FDT_ADDR_T_NONE) {
-		debug("%s: No keyboard register found\n", __func__);
-		return -1;
-	}
-	input_set_delays(&config.input, KBC_REPEAT_DELAY_MS,
-			KBC_REPEAT_RATE_MS);
-
-	/* Decode the keyboard matrix information (16 rows, 8 columns) */
-	if (key_matrix_init(&config.matrix, 16, 8, 1)) {
-		debug("%s: Could not init key matrix\n", __func__);
-		return -1;
-	}
-	if (key_matrix_decode_fdt(&config.matrix, gd->fdt_blob, node)) {
-		debug("%s: Could not decode key matrix from fdt\n", __func__);
-		return -1;
-	}
-	if (config.matrix.fn_keycode) {
-		if (input_add_table(&config.input, KEY_FN, -1,
-				    config.matrix.fn_keycode,
-				    config.matrix.key_count))
-			return -1;
-	}
-#else
-#error "Tegra keyboard driver requires FDT definitions"
-#endif
-
-	/* Set up pin mux and enable the clock */
-	funcmux_select(PERIPH_ID_KBC, FUNCMUX_DEFAULT);
-	clock_enable(PERIPH_ID_KBC);
-	config_kbc_gpio(config.kbc);
-
-	tegra_kbc_open();
-	config.created = 1;
-	debug("%s: Tegra keyboard ready\n", __func__);
-
-	return 0;
-}
-
-int drv_keyboard_init(void)
-{
-	struct stdio_dev dev;
-	char *stdinname = getenv("stdin");
-	int error;
-
-	if (input_init(&config.input, 0)) {
-		debug("%s: Cannot set up input\n", __func__);
-		return -1;
-	}
-	config.input.read_keys = tegra_kbc_check;
-
-	memset(&dev, '\0', sizeof(dev));
-	strcpy(dev.name, "tegra-kbc");
-	dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
-	dev.getc = kbd_getc;
-	dev.tstc = kbd_tstc;
-	dev.start = init_tegra_keyboard;
-
-	/* Register the device. init_tegra_keyboard() will be called soon */
-	error = input_stdio_register(&dev);
-	if (error)
-		return error;
-#ifdef CONFIG_CONSOLE_MUX
-	error = iomux_doenv(stdin, stdinname);
-	if (error)
-		return error;
-#endif
-	return 0;
-}