1 /*-
36 #include <sys/conf.h>
42 #include <dev/clk/clk.h>
56  * High-level UART interface.
60 	clk_t			clk;  member
72 	struct uart_bas *bas = &sc->sc_bas;  in tegra_uart_attach()
78 	ns8250->ier_rxbits = 0x1d;  in tegra_uart_attach()
79 	ns8250->ier_mask = 0xc0;  in tegra_uart_attach()
80 	ns8250->ier = uart_getreg(bas, REG_IER) & ns8250->ier_mask;  in tegra_uart_attach()
81 	ns8250->ier |= ns8250->ier_rxbits;  in tegra_uart_attach()
82 	uart_setreg(bas, REG_IER, ns8250->ier);  in tegra_uart_attach()
90 	struct uart_bas *bas = &sc->sc_bas;  in tegra_uart_grab()
99 	uart_lock(sc->sc_hwmtx);  in tegra_uart_grab()
101 	uart_setreg(bas, REG_IER, ier & ns8250->ier_mask);  in tegra_uart_grab()
108 	uart_unlock(sc->sc_hwmtx);  in tegra_uart_grab()
115 	struct uart_bas *bas = &sc->sc_bas;  in tegra_uart_ungrab()
120 	uart_lock(sc->sc_hwmtx);  in tegra_uart_ungrab()
121 	uart_setreg(bas, REG_FCR, ns8250->fcr);  in tegra_uart_ungrab()
122 	uart_setreg(bas, REG_IER, ns8250->ier);  in tegra_uart_ungrab()
124 	uart_unlock(sc->sc_hwmtx);  in tegra_uart_ungrab()
156 	{"nvidia,tegra124-uart", (uintptr_t)&tegra_uart_class},
157 	{"nvidia,tegra210-uart", (uintptr_t)&tegra_uart_class},
171 	if ((OF_getencprop(node, "reg-shift", &shift, sizeof(shift))) <= 0)  in uart_fdt_get_shift1()
190 	if (cd->ocd_data == 0)  in tegra_uart_probe()
192 	sc->ns8250_base.base.sc_class = (struct uart_class *)cd->ocd_data;  in tegra_uart_probe()
193 	rv = hwreset_get_by_ofw_name(dev, 0, "serial", &sc->reset);  in tegra_uart_probe()
198 	rv = hwreset_deassert(sc->reset);  in tegra_uart_probe()
205 	rv = clk_get_by_ofw_index(dev, 0, 0, &sc->clk);  in tegra_uart_probe()
210 	rv = clk_enable(sc->clk);  in tegra_uart_probe()
215 	rv = clk_get_freq(sc->clk, &freq);  in tegra_uart_probe()
229 	if (sc->clk != NULL) {  in tegra_uart_detach()
230 		clk_release(sc->clk);  in tegra_uart_detach()