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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc new file mode 100644 index 000000000..757dda700 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc @@ -0,0 +1,393 @@ +/* + * Copyright 2013 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#define T_TIMEOUT 2200000 +#define T_RISEFALL 1000 +#define T_HOLD 5000 + +#ifdef INCLUDE_PROC +process(PROC_I2C_, #i2c_init, #i2c_recv) +#endif + +/****************************************************************************** + * I2C_ data segment + *****************************************************************************/ +#ifdef INCLUDE_DATA +i2c_scl_map: +.b32 NV_PPWR_OUTPUT_I2C_0_SCL +.b32 NV_PPWR_OUTPUT_I2C_1_SCL +.b32 NV_PPWR_OUTPUT_I2C_2_SCL +.b32 NV_PPWR_OUTPUT_I2C_3_SCL +.b32 NV_PPWR_OUTPUT_I2C_4_SCL +.b32 NV_PPWR_OUTPUT_I2C_5_SCL +.b32 NV_PPWR_OUTPUT_I2C_6_SCL +.b32 NV_PPWR_OUTPUT_I2C_7_SCL +.b32 NV_PPWR_OUTPUT_I2C_8_SCL +.b32 NV_PPWR_OUTPUT_I2C_9_SCL +i2c_sda_map: +.b32 NV_PPWR_OUTPUT_I2C_0_SDA +.b32 NV_PPWR_OUTPUT_I2C_1_SDA +.b32 NV_PPWR_OUTPUT_I2C_2_SDA +.b32 NV_PPWR_OUTPUT_I2C_3_SDA +.b32 NV_PPWR_OUTPUT_I2C_4_SDA +.b32 NV_PPWR_OUTPUT_I2C_5_SDA +.b32 NV_PPWR_OUTPUT_I2C_6_SDA +.b32 NV_PPWR_OUTPUT_I2C_7_SDA +.b32 NV_PPWR_OUTPUT_I2C_8_SDA +.b32 NV_PPWR_OUTPUT_I2C_9_SDA +#if NVKM_PPWR_CHIPSET < GF119 +i2c_ctrl: +.b32 0x00e138 +.b32 0x00e150 +.b32 0x00e168 +.b32 0x00e180 +.b32 0x00e254 +.b32 0x00e274 +.b32 0x00e764 +.b32 0x00e780 +.b32 0x00e79c +.b32 0x00e7b8 +#endif +#endif + +/****************************************************************************** + * I2C_ code segment + *****************************************************************************/ +#ifdef INCLUDE_CODE + +// $r3 - value +// $r2 - sda line +// $r1 - scl line +// $r0 - zero +i2c_drive_scl: + cmp b32 $r3 0 + bra e #i2c_drive_scl_lo + nv_iowr(NV_PPWR_OUTPUT_SET, $r1) + ret + i2c_drive_scl_lo: + nv_iowr(NV_PPWR_OUTPUT_CLR, $r1) + ret + +i2c_drive_sda: + cmp b32 $r3 0 + bra e #i2c_drive_sda_lo + nv_iowr(NV_PPWR_OUTPUT_SET, $r2) + ret + i2c_drive_sda_lo: + nv_iowr(NV_PPWR_OUTPUT_CLR, $r2) + ret + +i2c_sense_scl: + bclr $flags $p1 + nv_iord($r3, NV_PPWR_INPUT) + and $r3 $r1 + bra z #i2c_sense_scl_done + bset $flags $p1 + i2c_sense_scl_done: + ret + +i2c_sense_sda: + bclr $flags $p1 + nv_iord($r3, NV_PPWR_INPUT) + and $r3 $r2 + bra z #i2c_sense_sda_done + bset $flags $p1 + i2c_sense_sda_done: + ret + +#define i2c_drive_scl(v) /* +*/ mov $r3 (v) /* +*/ call(i2c_drive_scl) +#define i2c_drive_sda(v) /* +*/ mov $r3 (v) /* +*/ call(i2c_drive_sda) +#define i2c_sense_scl() /* +*/ call(i2c_sense_scl) +#define i2c_sense_sda() /* +*/ call(i2c_sense_sda) +#define i2c_delay(v) /* +*/ mov $r14 (v) /* +*/ call(nsec) + +#define i2c_trace_init() /* +*/ imm32($r6, 0x10000000) /* +*/ sub b32 $r7 $r6 1 /* +*/ +#define i2c_trace_down() /* +*/ shr b32 $r6 4 /* +*/ push $r5 /* +*/ shl b32 $r5 $r6 4 /* +*/ sub b32 $r5 $r6 /* +*/ not b32 $r5 /* +*/ and $r7 $r5 /* +*/ pop $r5 /* +*/ +#define i2c_trace_exit() /* +*/ shl b32 $r6 4 /* +*/ +#define i2c_trace_next() /* +*/ add b32 $r7 $r6 /* +*/ +#define i2c_trace_call(func) /* +*/ i2c_trace_next() /* +*/ i2c_trace_down() /* +*/ call(func) /* +*/ i2c_trace_exit() /* +*/ + +i2c_raise_scl: + push $r4 + mov $r4 (T_TIMEOUT / T_RISEFALL) + i2c_drive_scl(1) + i2c_raise_scl_wait: + i2c_delay(T_RISEFALL) + i2c_sense_scl() + bra $p1 #i2c_raise_scl_done + sub b32 $r4 1 + bra nz #i2c_raise_scl_wait + i2c_raise_scl_done: + pop $r4 + ret + +i2c_start: + i2c_sense_scl() + bra not $p1 #i2c_start_rep + i2c_sense_sda() + bra not $p1 #i2c_start_rep + bra #i2c_start_send + i2c_start_rep: + i2c_drive_scl(0) + i2c_drive_sda(1) + i2c_trace_call(i2c_raise_scl) + bra not $p1 #i2c_start_out + i2c_start_send: + i2c_drive_sda(0) + i2c_delay(T_HOLD) + i2c_drive_scl(0) + i2c_delay(T_HOLD) + i2c_start_out: + ret + +i2c_stop: + i2c_drive_scl(0) + i2c_drive_sda(0) + i2c_delay(T_RISEFALL) + i2c_drive_scl(1) + i2c_delay(T_HOLD) + i2c_drive_sda(1) + i2c_delay(T_HOLD) + ret + +// $r3 - value +// $r2 - sda line +// $r1 - scl line +// $r0 - zero +i2c_bitw: + call(i2c_drive_sda) + i2c_delay(T_RISEFALL) + i2c_trace_call(i2c_raise_scl) + bra not $p1 #i2c_bitw_out + i2c_delay(T_HOLD) + i2c_drive_scl(0) + i2c_delay(T_HOLD) + i2c_bitw_out: + ret + +// $r3 - value (out) +// $r2 - sda line +// $r1 - scl line +// $r0 - zero +i2c_bitr: + i2c_drive_sda(1) + i2c_delay(T_RISEFALL) + i2c_trace_call(i2c_raise_scl) + bra not $p1 #i2c_bitr_done + i2c_sense_sda() + i2c_drive_scl(0) + i2c_delay(T_HOLD) + xbit $r3 $flags $p1 + bset $flags $p1 + i2c_bitr_done: + ret + +i2c_get_byte: + mov $r5 0 + mov $r4 8 + i2c_get_byte_next: + shl b32 $r5 1 + i2c_trace_call(i2c_bitr) + bra not $p1 #i2c_get_byte_done + or $r5 $r3 + sub b32 $r4 1 + bra nz #i2c_get_byte_next + mov $r3 1 + i2c_trace_call(i2c_bitw) + i2c_get_byte_done: + ret + +i2c_put_byte: + mov $r4 8 + i2c_put_byte_next: + sub b32 $r4 1 + xbit $r3 $r5 $r4 + i2c_trace_call(i2c_bitw) + bra not $p1 #i2c_put_byte_done + cmp b32 $r4 0 + bra ne #i2c_put_byte_next + i2c_trace_call(i2c_bitr) + bra not $p1 #i2c_put_byte_done + i2c_trace_next() + cmp b32 $r3 1 + bra ne #i2c_put_byte_done + bclr $flags $p1 // nack + i2c_put_byte_done: + ret + +i2c_addr: + i2c_trace_call(i2c_start) + bra not $p1 #i2c_addr_done + extr $r3 $r12 I2C__MSG_DATA0_ADDR + shl b32 $r3 1 + or $r5 $r3 + i2c_trace_call(i2c_put_byte) + i2c_addr_done: + ret + +i2c_acquire_addr: + extr $r14 $r12 I2C__MSG_DATA0_PORT +#if NVKM_PPWR_CHIPSET < GF119 + shl b32 $r14 2 + add b32 $r14 #i2c_ctrl + ld b32 $r14 D[$r14] +#else + shl b32 $r14 5 + add b32 $r14 0x00d014 +#endif + ret + +i2c_acquire: + call(i2c_acquire_addr) + call(rd32) + bset $r13 3 + call(wr32) + ret + +i2c_release: + call(i2c_acquire_addr) + call(rd32) + bclr $r13 3 + call(wr32) + ret + +// description +// +// $r15 - current (i2c) +// $r14 - sender process name +// $r13 - message +// $r12 - data0 +// $r11 - data1 +// $r0 - zero +i2c_recv: + bclr $flags $p1 + extr $r1 $r12 I2C__MSG_DATA0_PORT + shl b32 $r1 2 + cmp b32 $r1 (#i2c_sda_map - #i2c_scl_map) + bra ge #i2c_recv_done + add b32 $r3 $r1 #i2c_sda_map + ld b32 $r2 D[$r3] + add b32 $r3 $r1 #i2c_scl_map + ld b32 $r1 D[$r3] + + bset $flags $p2 + push $r13 + push $r14 + + push $r13 + i2c_trace_init() + i2c_trace_call(i2c_acquire) + pop $r13 + + cmp b32 $r13 I2C__MSG_RD08 + bra ne #i2c_recv_not_rd08 + mov $r5 0 + i2c_trace_call(i2c_addr) + bra not $p1 #i2c_recv_done + extr $r5 $r12 I2C__MSG_DATA0_RD08_REG + i2c_trace_call(i2c_put_byte) + bra not $p1 #i2c_recv_done + mov $r5 1 + i2c_trace_call(i2c_addr) + bra not $p1 #i2c_recv_done + i2c_trace_call(i2c_get_byte) + bra not $p1 #i2c_recv_done + ins $r11 $r5 I2C__MSG_DATA1_RD08_VAL + i2c_trace_call(i2c_stop) + mov b32 $r11 $r5 + clear b32 $r7 + bra #i2c_recv_done + + i2c_recv_not_rd08: + cmp b32 $r13 I2C__MSG_WR08 + bra ne #i2c_recv_not_wr08 + mov $r5 0 + call(i2c_addr) + bra not $p1 #i2c_recv_done + extr $r5 $r12 I2C__MSG_DATA0_WR08_REG + call(i2c_put_byte) + bra not $p1 #i2c_recv_done + mov $r5 0 + call(i2c_addr) + bra not $p1 #i2c_recv_done + extr $r5 $r11 I2C__MSG_DATA1_WR08_VAL + call(i2c_put_byte) + bra not $p1 #i2c_recv_done + call(i2c_stop) + clear b32 $r7 + extr $r5 $r12 I2C__MSG_DATA0_WR08_SYNC + bra nz #i2c_recv_done + bclr $flags $p2 + bra #i2c_recv_done + + i2c_recv_not_wr08: + + i2c_recv_done: + extr $r14 $r12 I2C__MSG_DATA0_PORT + call(i2c_release) + + pop $r14 + pop $r13 + bra not $p2 #i2c_recv_exit + mov b32 $r12 $r7 + call(send) + + i2c_recv_exit: + ret + +// description +// +// $r15 - current (i2c) +// $r0 - zero +i2c_init: + ret +#endif |