else if (core->parent)
best_parent_rate = core->parent->rate;
+ if (core->flags & CLK_SET_RATE_UNGATE) {
+ unsigned long flags;
+
+ clk_core_prepare(core);
+ flags = clk_enable_lock();
+ clk_core_enable(core);
+ clk_enable_unlock(flags);
+ }
+
if (core->new_parent && core->new_parent != core->parent) {
old_parent = __clk_set_parent_before(core, core->new_parent);
trace_clk_set_parent(core, core->new_parent);
core->rate = clk_recalc(core, best_parent_rate);
+ if (core->flags & CLK_SET_RATE_UNGATE) {
+ unsigned long flags;
+
+ flags = clk_enable_lock();
+ clk_core_disable(core);
+ clk_enable_unlock(flags);
+ clk_core_unprepare(core);
+ }
+
if (core->notifier_count && old_rate != core->rate)
__clk_notify(core, POST_RATE_CHANGE, old_rate, core->rate);
COMPOSITE_NOMUX(0, "uart2_src", "uart_pll_clk", 0,
RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(1), 8, GFLAGS),
- COMPOSITE_FRAC(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
RK2928_CLKSEL_CON(17), 0,
- RK2928_CLKGATE_CON(1), 9, GFLAGS),
- COMPOSITE_FRAC(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(18), 0,
- RK2928_CLKGATE_CON(1), 11, GFLAGS),
- COMPOSITE_FRAC(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(19), 0,
- RK2928_CLKGATE_CON(1), 13, GFLAGS),
+ RK2928_CLKGATE_CON(1), 9, GFLAGS,
MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(13), 8, 2, MFLAGS),
+ RK2928_CLKSEL_CON(13), 8, 2, MFLAGS)),
+ COMPOSITE_FRACMUX(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
+ RK2928_CLKSEL_CON(18), 0,
+ RK2928_CLKGATE_CON(1), 11, GFLAGS,
MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(14), 8, 2, MFLAGS),
+ RK2928_CLKSEL_CON(14), 8, 2, MFLAGS)),
+ COMPOSITE_FRACMUX(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
+ RK2928_CLKSEL_CON(19), 0,
+ RK2928_CLKGATE_CON(1), 13, GFLAGS,
MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(15), 8, 2, MFLAGS),
+ RK2928_CLKSEL_CON(15), 8, 2, MFLAGS)),
COMPOSITE(0, "aclk_vcodec", mux_pll_src_3plls_p, 0,
RK2928_CLKSEL_CON(32), 14, 2, MFLAGS, 8, 5, DFLAGS,
COMPOSITE(0, "i2s_src", mux_pll_src_3plls_p, 0,
RK2928_CLKSEL_CON(3), 14, 2, MFLAGS, 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 9, GFLAGS),
- COMPOSITE_FRAC(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
RK2928_CLKSEL_CON(7), 0,
- RK2928_CLKGATE_CON(0), 10, GFLAGS),
+ RK2928_CLKGATE_CON(0), 10, GFLAGS,
MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(3), 8, 2, MFLAGS),
+ RK2928_CLKSEL_CON(3), 8, 2, MFLAGS)),
COMPOSITE_NODIV(SCLK_I2S_OUT, "i2s_clkout", mux_i2s_clkout_p, 0,
RK2928_CLKSEL_CON(3), 12, 1, MFLAGS,
RK2928_CLKGATE_CON(0), 13, GFLAGS),
COMPOSITE(0, "spdif_src", mux_pll_src_3plls_p, 0,
RK2928_CLKSEL_CON(5), 10, 2, MFLAGS, 0, 7, DFLAGS,
RK2928_CLKGATE_CON(2), 10, GFLAGS),
- COMPOSITE_FRAC(0, "spdif_frac", "spdif_src", 0,
+ COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", 0,
RK2928_CLKSEL_CON(9), 0,
- RK2928_CLKGATE_CON(2), 12, GFLAGS),
+ RK2928_CLKGATE_CON(2), 12, GFLAGS,
MUX(SCLK_SPDIF, "sclk_spdif", mux_spdif_p, 0,
- RK2928_CLKSEL_CON(5), 8, 2, MFLAGS),
+ RK2928_CLKSEL_CON(5), 8, 2, MFLAGS)),
GATE(SCLK_OTGPHY0, "sclk_otgphy0", "xin12m", CLK_IGNORE_UNUSED,
RK2928_CLKGATE_CON(1), 5, GFLAGS),
COMPOSITE(0, "hsadc_src", mux_pll_src_gpll_cpll_p, 0,
RK2928_CLKSEL_CON(22), 0, 1, MFLAGS, 8, 8, DFLAGS,
RK2928_CLKGATE_CON(2), 6, GFLAGS),
- COMPOSITE_FRAC(0, "hsadc_frac", "hsadc_src", 0,
+ COMPOSITE_FRACMUX(0, "hsadc_frac", "hsadc_src", 0,
RK2928_CLKSEL_CON(23), 0,
- RK2928_CLKGATE_CON(2), 7, GFLAGS),
- MUX(0, "sclk_hsadc_out", mux_sclk_hsadc_p, 0,
- RK2928_CLKSEL_CON(22), 4, 2, MFLAGS),
+ RK2928_CLKGATE_CON(2), 7, GFLAGS,
+ MUX(0, "sclk_hsadc_out", mux_sclk_hsadc_p, 0,
+ RK2928_CLKSEL_CON(22), 4, 2, MFLAGS)),
INVERTER(SCLK_HSADC, "sclk_hsadc", "sclk_hsadc_out",
RK2928_CLKSEL_CON(22), 7, IFLAGS),
COMPOSITE_NOMUX(0, "spdif_pre", "i2s_src", 0,
RK2928_CLKSEL_CON(5), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 13, GFLAGS),
- COMPOSITE_FRAC(0, "spdif_frac", "spdif_pre", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_pll", CLK_SET_RATE_PARENT,
RK2928_CLKSEL_CON(9), 0,
- RK2928_CLKGATE_CON(0), 14, GFLAGS),
- MUX(SCLK_SPDIF, "sclk_spdif", mux_sclk_spdif_p, CLK_SET_RATE_PARENT,
- RK2928_CLKSEL_CON(5), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(0), 14, GFLAGS,
+ MUX(SCLK_SPDIF, "sclk_spdif", mux_sclk_spdif_p, CLK_SET_RATE_PARENT,
+ RK2928_CLKSEL_CON(5), 8, 2, MFLAGS)),
/*
* Clock-Architecture Diagram 4
COMPOSITE_NOMUX(0, "uart0_pre", "uart_src", 0,
RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(1), 8, GFLAGS),
- COMPOSITE_FRAC(0, "uart0_frac", "uart0_pre", 0,
+ COMPOSITE_FRACMUX(0, "uart0_frac", "uart0_pre", 0,
RK2928_CLKSEL_CON(17), 0,
- RK2928_CLKGATE_CON(1), 9, GFLAGS),
- MUX(SCLK_UART0, "sclk_uart0", mux_sclk_uart0_p, 0,
- RK2928_CLKSEL_CON(13), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(1), 9, GFLAGS,
+ MUX(SCLK_UART0, "sclk_uart0", mux_sclk_uart0_p, 0,
+ RK2928_CLKSEL_CON(13), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart1_pre", "uart_src", 0,
RK2928_CLKSEL_CON(14), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(1), 10, GFLAGS),
- COMPOSITE_FRAC(0, "uart1_frac", "uart1_pre", 0,
+ COMPOSITE_FRACMUX(0, "uart1_frac", "uart1_pre", 0,
RK2928_CLKSEL_CON(18), 0,
- RK2928_CLKGATE_CON(1), 11, GFLAGS),
- MUX(SCLK_UART1, "sclk_uart1", mux_sclk_uart1_p, 0,
- RK2928_CLKSEL_CON(14), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(1), 11, GFLAGS,
+ MUX(SCLK_UART1, "sclk_uart1", mux_sclk_uart1_p, 0,
+ RK2928_CLKSEL_CON(14), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart2_pre", "uart_src", 0,
RK2928_CLKSEL_CON(15), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(1), 12, GFLAGS),
- COMPOSITE_FRAC(0, "uart2_frac", "uart2_pre", 0,
+ COMPOSITE_FRACMUX(0, "uart2_frac", "uart2_pre", 0,
RK2928_CLKSEL_CON(19), 0,
- RK2928_CLKGATE_CON(1), 13, GFLAGS),
- MUX(SCLK_UART2, "sclk_uart2", mux_sclk_uart2_p, 0,
- RK2928_CLKSEL_CON(15), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(1), 13, GFLAGS,
+ MUX(SCLK_UART2, "sclk_uart2", mux_sclk_uart2_p, 0,
+ RK2928_CLKSEL_CON(15), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart3_pre", "uart_src", 0,
RK2928_CLKSEL_CON(16), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(1), 14, GFLAGS),
- COMPOSITE_FRAC(0, "uart3_frac", "uart3_pre", 0,
+ COMPOSITE_FRACMUX(0, "uart3_frac", "uart3_pre", 0,
RK2928_CLKSEL_CON(20), 0,
- RK2928_CLKGATE_CON(1), 15, GFLAGS),
- MUX(SCLK_UART3, "sclk_uart3", mux_sclk_uart3_p, 0,
- RK2928_CLKSEL_CON(16), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(1), 15, GFLAGS,
+ MUX(SCLK_UART3, "sclk_uart3", mux_sclk_uart3_p, 0,
+ RK2928_CLKSEL_CON(16), 8, 2, MFLAGS)),
GATE(SCLK_JTAG, "jtag", "ext_jtag", 0, RK2928_CLKGATE_CON(1), 3, GFLAGS),
COMPOSITE_NOMUX(0, "i2s0_pre", "i2s_src", 0,
RK2928_CLKSEL_CON(2), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 7, GFLAGS),
- COMPOSITE_FRAC(0, "i2s0_frac", "i2s0_pre", 0,
+ COMPOSITE_FRACMUX(0, "i2s0_frac", "i2s0_pre", 0,
RK2928_CLKSEL_CON(6), 0,
- RK2928_CLKGATE_CON(0), 8, GFLAGS),
- MUX(SCLK_I2S0, "sclk_i2s0", mux_sclk_i2s0_p, 0,
- RK2928_CLKSEL_CON(2), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(0), 8, GFLAGS,
+ MUX(SCLK_I2S0, "sclk_i2s0", mux_sclk_i2s0_p, 0,
+ RK2928_CLKSEL_CON(2), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "i2s1_pre", "i2s_src", 0,
RK2928_CLKSEL_CON(3), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 9, GFLAGS),
- COMPOSITE_FRAC(0, "i2s1_frac", "i2s1_pre", 0,
+ COMPOSITE_FRACMUX(0, "i2s1_frac", "i2s1_pre", 0,
RK2928_CLKSEL_CON(7), 0,
- RK2928_CLKGATE_CON(0), 10, GFLAGS),
- MUX(SCLK_I2S1, "sclk_i2s1", mux_sclk_i2s1_p, 0,
- RK2928_CLKSEL_CON(3), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(0), 10, GFLAGS,
+ MUX(SCLK_I2S1, "sclk_i2s1", mux_sclk_i2s1_p, 0,
+ RK2928_CLKSEL_CON(3), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "i2s2_pre", "i2s_src", 0,
RK2928_CLKSEL_CON(4), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 11, GFLAGS),
- COMPOSITE_FRAC(0, "i2s2_frac", "i2s2_pre", 0,
+ COMPOSITE_FRACMUX(0, "i2s2_frac", "i2s2_pre", 0,
RK2928_CLKSEL_CON(8), 0,
- RK2928_CLKGATE_CON(0), 12, GFLAGS),
- MUX(SCLK_I2S2, "sclk_i2s2", mux_sclk_i2s2_p, 0,
- RK2928_CLKSEL_CON(4), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(0), 12, GFLAGS,
+ MUX(SCLK_I2S2, "sclk_i2s2", mux_sclk_i2s2_p, 0,
+ RK2928_CLKSEL_CON(4), 8, 2, MFLAGS)),
GATE(HCLK_I2S1, "hclk_i2s1", "hclk_cpu", 0, RK2928_CLKGATE_CON(7), 3, GFLAGS),
GATE(HCLK_I2S2, "hclk_i2s2", "hclk_cpu", 0, RK2928_CLKGATE_CON(7), 4, GFLAGS),
COMPOSITE_NOMUX(0, "i2s0_pre", "i2s_src", 0,
RK2928_CLKSEL_CON(3), 0, 7, DFLAGS,
RK2928_CLKGATE_CON(0), 9, GFLAGS),
- COMPOSITE_FRAC(0, "i2s0_frac", "i2s0_pre", 0,
+ COMPOSITE_FRACMUX(0, "i2s0_frac", "i2s0_pre", 0,
RK2928_CLKSEL_CON(7), 0,
- RK2928_CLKGATE_CON(0), 10, GFLAGS),
- MUX(SCLK_I2S0, "sclk_i2s0", mux_sclk_i2s0_p, 0,
- RK2928_CLKSEL_CON(3), 8, 2, MFLAGS),
+ RK2928_CLKGATE_CON(0), 10, GFLAGS,
+ MUX(SCLK_I2S0, "sclk_i2s0", mux_sclk_i2s0_p, 0,
+ RK2928_CLKSEL_CON(3), 8, 2, MFLAGS)),
GATE(0, "hclk_imem0", "hclk_cpu", 0, RK2928_CLKGATE_CON(4), 14, GFLAGS),
GATE(0, "hclk_imem1", "hclk_cpu", 0, RK2928_CLKGATE_CON(4), 15, GFLAGS),
COMPOSITE(0, "i2s_src", mux_pll_src_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(4), 15, 1, MFLAGS, 0, 7, DFLAGS,
RK3288_CLKGATE_CON(4), 1, GFLAGS),
- COMPOSITE_FRAC(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(8), 0,
- RK3288_CLKGATE_CON(4), 2, GFLAGS),
- MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(4), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(4), 2, GFLAGS,
+ MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(4), 8, 2, MFLAGS)),
COMPOSITE_NODIV(SCLK_I2S0_OUT, "i2s0_clkout", mux_i2s_clkout_p, 0,
RK3288_CLKSEL_CON(4), 12, 1, MFLAGS,
RK3288_CLKGATE_CON(4), 0, GFLAGS),
MUX(0, "spdif_src", mux_pll_src_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(5), 15, 1, MFLAGS),
- COMPOSITE_NOMUX(0, "spdif_pre", "spdif_src", 0,
+ COMPOSITE_NOMUX(0, "spdif_pre", "spdif_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(5), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(4), 4, GFLAGS),
- COMPOSITE_FRAC(0, "spdif_frac", "spdif_src", 0,
+ COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(9), 0,
- RK3288_CLKGATE_CON(4), 5, GFLAGS),
- COMPOSITE_NODIV(SCLK_SPDIF, "sclk_spdif", mux_spdif_p, 0,
- RK3288_CLKSEL_CON(5), 8, 2, MFLAGS,
+ RK3288_CLKGATE_CON(4), 5, GFLAGS,
+ MUX(0, "spdif_mux", mux_spdif_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(5), 8, 2, MFLAGS)),
+ GATE(SCLK_SPDIF, "sclk_spdif", "spdif_mux", CLK_SET_RATE_PARENT,
RK3288_CLKGATE_CON(4), 6, GFLAGS),
- COMPOSITE_NOMUX(0, "spdif_8ch_pre", "spdif_src", 0,
+ COMPOSITE_NOMUX(0, "spdif_8ch_pre", "spdif_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(40), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(4), 7, GFLAGS),
- COMPOSITE_FRAC(0, "spdif_8ch_frac", "spdif_8ch_pre", 0,
+ COMPOSITE_FRACMUX(0, "spdif_8ch_frac", "spdif_8ch_pre", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(41), 0,
- RK3288_CLKGATE_CON(4), 8, GFLAGS),
- COMPOSITE_NODIV(SCLK_SPDIF8CH, "sclk_spdif_8ch", mux_spdif_8ch_p, 0,
- RK3288_CLKSEL_CON(40), 8, 2, MFLAGS,
+ RK3288_CLKGATE_CON(4), 8, GFLAGS,
+ MUX(0, "spdif_8ch_mux", mux_spdif_8ch_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(40), 8, 2, MFLAGS)),
+ GATE(SCLK_SPDIF8CH, "sclk_spdif_8ch", "spdif_8ch_mux", CLK_SET_RATE_PARENT,
RK3288_CLKGATE_CON(4), 9, GFLAGS),
GATE(0, "sclk_acc_efuse", "xin24m", 0,
COMPOSITE(0, "uart0_src", mux_pll_src_cpll_gll_usb_npll_p, 0,
RK3288_CLKSEL_CON(13), 13, 2, MFLAGS, 0, 7, DFLAGS,
RK3288_CLKGATE_CON(1), 8, GFLAGS),
- COMPOSITE_FRAC(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(17), 0,
- RK3288_CLKGATE_CON(1), 9, GFLAGS),
- MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(13), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(1), 9, GFLAGS,
+ MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(13), 8, 2, MFLAGS)),
MUX(0, "uart_src", mux_pll_src_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(13), 15, 1, MFLAGS),
COMPOSITE_NOMUX(0, "uart1_src", "uart_src", 0,
RK3288_CLKSEL_CON(14), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(1), 10, GFLAGS),
- COMPOSITE_FRAC(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(18), 0,
- RK3288_CLKGATE_CON(1), 11, GFLAGS),
- MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(14), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(1), 11, GFLAGS,
+ MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(14), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart2_src", "uart_src", 0,
RK3288_CLKSEL_CON(15), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(1), 12, GFLAGS),
- COMPOSITE_FRAC(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(19), 0,
- RK3288_CLKGATE_CON(1), 13, GFLAGS),
- MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(15), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(1), 13, GFLAGS,
+ MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(15), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart3_src", "uart_src", 0,
RK3288_CLKSEL_CON(16), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(1), 14, GFLAGS),
- COMPOSITE_FRAC(0, "uart3_frac", "uart3_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart3_frac", "uart3_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(20), 0,
- RK3288_CLKGATE_CON(1), 15, GFLAGS),
- MUX(SCLK_UART3, "sclk_uart3", mux_uart3_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(16), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(1), 15, GFLAGS,
+ MUX(SCLK_UART3, "sclk_uart3", mux_uart3_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(16), 8, 2, MFLAGS)),
COMPOSITE_NOMUX(0, "uart4_src", "uart_src", 0,
RK3288_CLKSEL_CON(3), 0, 7, DFLAGS,
RK3288_CLKGATE_CON(2), 12, GFLAGS),
- COMPOSITE_FRAC(0, "uart4_frac", "uart4_src", CLK_SET_RATE_PARENT,
+ COMPOSITE_FRACMUX(0, "uart4_frac", "uart4_src", CLK_SET_RATE_PARENT,
RK3288_CLKSEL_CON(7), 0,
- RK3288_CLKGATE_CON(2), 13, GFLAGS),
- MUX(SCLK_UART4, "sclk_uart4", mux_uart4_p, CLK_SET_RATE_PARENT,
- RK3288_CLKSEL_CON(3), 8, 2, MFLAGS),
+ RK3288_CLKGATE_CON(2), 13, GFLAGS,
+ MUX(SCLK_UART4, "sclk_uart4", mux_uart4_p, CLK_SET_RATE_PARENT,
+ RK3288_CLKSEL_CON(3), 8, 2, MFLAGS)),
COMPOSITE(0, "mac_pll_src", mux_pll_src_npll_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(21), 0, 2, MFLAGS, 8, 5, DFLAGS,
return clk;
}
+struct rockchip_clk_frac {
+ struct notifier_block clk_nb;
+ struct clk_fractional_divider div;
+ struct clk_gate gate;
+
+ struct clk_mux mux;
+ const struct clk_ops *mux_ops;
+ int mux_frac_idx;
+
+ bool rate_change_remuxed;
+ int rate_change_idx;
+};
+
+#define to_rockchip_clk_frac_nb(nb) \
+ container_of(nb, struct rockchip_clk_frac, clk_nb)
+
+static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct clk_notifier_data *ndata = data;
+ struct rockchip_clk_frac *frac = to_rockchip_clk_frac_nb(nb);
+ struct clk_mux *frac_mux = &frac->mux;
+ int ret = 0;
+
+ pr_debug("%s: event %lu, old_rate %lu, new_rate: %lu\n",
+ __func__, event, ndata->old_rate, ndata->new_rate);
+ if (event == PRE_RATE_CHANGE) {
+ frac->rate_change_idx = frac->mux_ops->get_parent(&frac_mux->hw);
+ if (frac->rate_change_idx != frac->mux_frac_idx) {
+ frac->mux_ops->set_parent(&frac_mux->hw, frac->mux_frac_idx);
+ frac->rate_change_remuxed = 1;
+ }
+ } else if (event == POST_RATE_CHANGE) {
+ /*
+ * The POST_RATE_CHANGE notifier runs directly after the
+ * divider clock is set in clk_change_rate, so we'll have
+ * remuxed back to the original parent before clk_change_rate
+ * reaches the mux itself.
+ */
+ if (frac->rate_change_remuxed) {
+ frac->mux_ops->set_parent(&frac_mux->hw, frac->rate_change_idx);
+ frac->rate_change_remuxed = 0;
+ }
+ }
+
+ return notifier_from_errno(ret);
+}
+
static struct clk *rockchip_clk_register_frac_branch(const char *name,
const char *const *parent_names, u8 num_parents,
void __iomem *base, int muxdiv_offset, u8 div_flags,
int gate_offset, u8 gate_shift, u8 gate_flags,
- unsigned long flags, spinlock_t *lock)
+ unsigned long flags, struct rockchip_clk_branch *child,
+ spinlock_t *lock)
{
+ struct rockchip_clk_frac *frac;
struct clk *clk;
struct clk_gate *gate = NULL;
struct clk_fractional_divider *div = NULL;
const struct clk_ops *div_ops = NULL, *gate_ops = NULL;
- if (gate_offset >= 0) {
- gate = kzalloc(sizeof(*gate), GFP_KERNEL);
- if (!gate)
- return ERR_PTR(-ENOMEM);
+ if (muxdiv_offset < 0)
+ return ERR_PTR(-EINVAL);
+ if (child && child->branch_type != branch_mux) {
+ pr_err("%s: fractional child clock for %s can only be a mux\n",
+ __func__, name);
+ return ERR_PTR(-EINVAL);
+ }
+
+ frac = kzalloc(sizeof(*frac), GFP_KERNEL);
+ if (!frac)
+ return ERR_PTR(-ENOMEM);
+
+ if (gate_offset >= 0) {
+ gate = &frac->gate;
gate->flags = gate_flags;
gate->reg = base + gate_offset;
gate->bit_idx = gate_shift;
gate_ops = &clk_gate_ops;
}
- if (muxdiv_offset < 0)
- return ERR_PTR(-EINVAL);
-
- div = kzalloc(sizeof(*div), GFP_KERNEL);
- if (!div)
- return ERR_PTR(-ENOMEM);
-
+ div = &frac->div;
div->flags = div_flags;
div->reg = base + muxdiv_offset;
div->mshift = 16;
NULL, NULL,
&div->hw, div_ops,
gate ? &gate->hw : NULL, gate_ops,
- flags);
+ flags | CLK_SET_RATE_UNGATE);
+ if (IS_ERR(clk)) {
+ kfree(frac);
+ return clk;
+ }
+
+ if (child) {
+ struct clk_mux *frac_mux = &frac->mux;
+ struct clk_init_data init;
+ struct clk *mux_clk;
+ int i, ret;
+
+ frac->mux_frac_idx = -1;
+ for (i = 0; i < child->num_parents; i++) {
+ if (!strcmp(name, child->parent_names[i])) {
+ pr_debug("%s: found fractional parent in mux at pos %d\n",
+ __func__, i);
+ frac->mux_frac_idx = i;
+ break;
+ }
+ }
+
+ frac->mux_ops = &clk_mux_ops;
+ frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb;
+
+ frac_mux->reg = base + child->muxdiv_offset;
+ frac_mux->shift = child->mux_shift;
+ frac_mux->mask = BIT(child->mux_width) - 1;
+ frac_mux->flags = child->mux_flags;
+ frac_mux->lock = lock;
+ frac_mux->hw.init = &init;
+
+ init.name = child->name;
+ init.flags = child->flags | CLK_SET_RATE_PARENT;
+ init.ops = frac->mux_ops;
+ init.parent_names = child->parent_names;
+ init.num_parents = child->num_parents;
+
+ mux_clk = clk_register(NULL, &frac_mux->hw);
+ if (IS_ERR(mux_clk))
+ return clk;
+
+ rockchip_clk_add_lookup(mux_clk, child->id);
+
+ /* notifier on the fraction divider to catch rate changes */
+ if (frac->mux_frac_idx >= 0) {
+ ret = clk_notifier_register(clk, &frac->clk_nb);
+ if (ret)
+ pr_err("%s: failed to register clock notifier for %s\n",
+ __func__, name);
+ } else {
+ pr_warn("%s: could not find %s as parent of %s, rate changes may not work\n",
+ __func__, name, child->name);
+ }
+ }
return clk;
}
list->parent_names, list->num_parents,
reg_base, list->muxdiv_offset, list->div_flags,
list->gate_offset, list->gate_shift,
- list->gate_flags, flags, &clk_lock);
+ list->gate_flags, flags, list->child,
+ &clk_lock);
break;
case branch_gate:
flags |= CLK_SET_RATE_PARENT;
int gate_offset;
u8 gate_shift;
u8 gate_flags;
+ struct rockchip_clk_branch *child;
};
#define COMPOSITE(_id, cname, pnames, f, mo, ms, mw, mf, ds, dw,\
.gate_flags = gf, \
}
+#define COMPOSITE_FRACMUX(_id, cname, pname, f, mo, df, go, gs, gf, ch) \
+ { \
+ .id = _id, \
+ .branch_type = branch_fraction_divider, \
+ .name = cname, \
+ .parent_names = (const char *[]){ pname }, \
+ .num_parents = 1, \
+ .flags = f, \
+ .muxdiv_offset = mo, \
+ .div_shift = 16, \
+ .div_width = 16, \
+ .div_flags = df, \
+ .gate_offset = go, \
+ .gate_shift = gs, \
+ .gate_flags = gf, \
+ .child = &(struct rockchip_clk_branch)ch, \
+ }
+
#define MUX(_id, cname, pnames, f, o, s, w, mf) \
{ \
.id = _id, \
#define CLK_SET_RATE_NO_REPARENT BIT(7) /* don't re-parent on rate change */
#define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
#define CLK_RECALC_NEW_RATES BIT(9) /* recalc rates after notifications */
+#define CLK_SET_RATE_UNGATE BIT(10) /* clock needs to run to set rate */
struct clk;
struct clk_hw;
projects / mirror_ubuntu-artful-kernel.git / commitdiff