diff options
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/r500_reg.h | 100 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_combios.c | 71 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_i2c.c | 597 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_reg.h | 48 |
6 files changed, 736 insertions, 82 deletions
diff --git a/drivers/gpu/drm/radeon/r500_reg.h b/drivers/gpu/drm/radeon/r500_reg.h index 74ad89bdf2b5..0cf2ad2a5585 100644 --- a/drivers/gpu/drm/radeon/r500_reg.h +++ b/drivers/gpu/drm/radeon/r500_reg.h @@ -717,54 +717,62 @@ #define AVIVO_DVOA_BIT_DEPTH_CONTROL 0x7988 #define AVIVO_DC_GPIO_HPD_A 0x7e94 - -#define AVIVO_GPIO_0 0x7e30 -#define AVIVO_GPIO_1 0x7e40 -#define AVIVO_GPIO_2 0x7e50 -#define AVIVO_GPIO_3 0x7e60 - #define AVIVO_DC_GPIO_HPD_Y 0x7e9c -#define AVIVO_I2C_STATUS 0x7d30 -# define AVIVO_I2C_STATUS_DONE (1 << 0) -# define AVIVO_I2C_STATUS_NACK (1 << 1) -# define AVIVO_I2C_STATUS_HALT (1 << 2) -# define AVIVO_I2C_STATUS_GO (1 << 3) -# define AVIVO_I2C_STATUS_MASK 0x7 -/* If radeon_mm_i2c is to be believed, this is HALT, NACK, and maybe - * DONE? */ -# define AVIVO_I2C_STATUS_CMD_RESET 0x7 -# define AVIVO_I2C_STATUS_CMD_WAIT (1 << 3) -#define AVIVO_I2C_STOP 0x7d34 -#define AVIVO_I2C_START_CNTL 0x7d38 -# define AVIVO_I2C_START (1 << 8) -# define AVIVO_I2C_CONNECTOR0 (0 << 16) -# define AVIVO_I2C_CONNECTOR1 (1 << 16) -#define R520_I2C_START (1<<0) -#define R520_I2C_STOP (1<<1) -#define R520_I2C_RX (1<<2) -#define R520_I2C_EN (1<<8) -#define R520_I2C_DDC1 (0<<16) -#define R520_I2C_DDC2 (1<<16) -#define R520_I2C_DDC3 (2<<16) -#define R520_I2C_DDC_MASK (3<<16) -#define AVIVO_I2C_CONTROL2 0x7d3c -# define AVIVO_I2C_7D3C_SIZE_SHIFT 8 -# define AVIVO_I2C_7D3C_SIZE_MASK (0xf << 8) -#define AVIVO_I2C_CONTROL3 0x7d40 -/* Reading is done 4 bytes at a time: read the bottom 8 bits from - * 7d44, four times in a row. - * Writing is a little more complex. First write DATA with - * 0xnnnnnnzz, then 0xnnnnnnyy, where nnnnnn is some non-deterministic - * magic number, zz is, I think, the slave address, and yy is the byte - * you want to write. */ -#define AVIVO_I2C_DATA 0x7d44 -#define R520_I2C_ADDR_COUNT_MASK (0x7) -#define R520_I2C_DATA_COUNT_SHIFT (8) -#define R520_I2C_DATA_COUNT_MASK (0xF00) -#define AVIVO_I2C_CNTL 0x7d50 -# define AVIVO_I2C_EN (1 << 0) -# define AVIVO_I2C_RESET (1 << 8) +#define AVIVO_DC_I2C_STATUS1 0x7d30 +# define AVIVO_DC_I2C_DONE (1 << 0) +# define AVIVO_DC_I2C_NACK (1 << 1) +# define AVIVO_DC_I2C_HALT (1 << 2) +# define AVIVO_DC_I2C_GO (1 << 3) +#define AVIVO_DC_I2C_RESET 0x7d34 +# define AVIVO_DC_I2C_SOFT_RESET (1 << 0) +# define AVIVO_DC_I2C_ABORT (1 << 8) +#define AVIVO_DC_I2C_CONTROL1 0x7d38 +# define AVIVO_DC_I2C_START (1 << 0) +# define AVIVO_DC_I2C_STOP (1 << 1) +# define AVIVO_DC_I2C_RECEIVE (1 << 2) +# define AVIVO_DC_I2C_EN (1 << 8) +# define AVIVO_DC_I2C_PIN_SELECT(x) ((x) << 16) +# define AVIVO_SEL_DDC1 0 +# define AVIVO_SEL_DDC2 1 +# define AVIVO_SEL_DDC3 2 +#define AVIVO_DC_I2C_CONTROL2 0x7d3c +# define AVIVO_DC_I2C_ADDR_COUNT(x) ((x) << 0) +# define AVIVO_DC_I2C_DATA_COUNT(x) ((x) << 8) +#define AVIVO_DC_I2C_CONTROL3 0x7d40 +# define AVIVO_DC_I2C_DATA_DRIVE_EN (1 << 0) +# define AVIVO_DC_I2C_DATA_DRIVE_SEL (1 << 1) +# define AVIVO_DC_I2C_CLK_DRIVE_EN (1 << 7) +# define AVIVO_DC_I2C_RD_INTRA_BYTE_DELAY(x) ((x) << 8) +# define AVIVO_DC_I2C_WR_INTRA_BYTE_DELAY(x) ((x) << 16) +# define AVIVO_DC_I2C_TIME_LIMIT(x) ((x) << 24) +#define AVIVO_DC_I2C_DATA 0x7d44 +#define AVIVO_DC_I2C_INTERRUPT_CONTROL 0x7d48 +# define AVIVO_DC_I2C_INTERRUPT_STATUS (1 << 0) +# define AVIVO_DC_I2C_INTERRUPT_AK (1 << 8) +# define AVIVO_DC_I2C_INTERRUPT_ENABLE (1 << 16) +#define AVIVO_DC_I2C_ARBITRATION 0x7d50 +# define AVIVO_DC_I2C_SW_WANTS_TO_USE_I2C (1 << 0) +# define AVIVO_DC_I2C_SW_CAN_USE_I2C (1 << 1) +# define AVIVO_DC_I2C_SW_DONE_USING_I2C (1 << 8) +# define AVIVO_DC_I2C_HW_NEEDS_I2C (1 << 9) +# define AVIVO_DC_I2C_ABORT_HDCP_I2C (1 << 16) +# define AVIVO_DC_I2C_HW_USING_I2C (1 << 17) + +#define AVIVO_DC_GPIO_DDC1_MASK 0x7e40 +#define AVIVO_DC_GPIO_DDC1_A 0x7e44 +#define AVIVO_DC_GPIO_DDC1_EN 0x7e48 +#define AVIVO_DC_GPIO_DDC1_Y 0x7e4c + +#define AVIVO_DC_GPIO_DDC2_MASK 0x7e50 +#define AVIVO_DC_GPIO_DDC2_A 0x7e54 +#define AVIVO_DC_GPIO_DDC2_EN 0x7e58 +#define AVIVO_DC_GPIO_DDC2_Y 0x7e5c + +#define AVIVO_DC_GPIO_DDC3_MASK 0x7e60 +#define AVIVO_DC_GPIO_DDC3_A 0x7e64 +#define AVIVO_DC_GPIO_DDC3_EN 0x7e68 +#define AVIVO_DC_GPIO_DDC3_Y 0x7e6c #define AVIVO_DISP_INTERRUPT_STATUS 0x7edc # define AVIVO_D1_VBLANK_INTERRUPT (1 << 4) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index f57480ba1355..88113f756ab7 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -829,6 +829,7 @@ struct radeon_device { struct r600_ih ih; /* r6/700 interrupt ring */ struct workqueue_struct *wq; struct work_struct hotplug_work; + struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */ /* audio stuff */ struct timer_list audio_timer; diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 318afe83e6b0..e208d730f514 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -486,9 +486,65 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde i2c.y_data_reg = ddc_line; } - if (rdev->family < CHIP_R200) - i2c.hw_capable = false; - else { + switch (rdev->family) { + case CHIP_R100: + case CHIP_RV100: + case CHIP_RS100: + case CHIP_RV200: + case CHIP_RS200: + case CHIP_RS300: + switch (ddc_line) { + case RADEON_GPIO_DVI_DDC: + /* in theory this should be hw capable, + * but it doesn't seem to work + */ + i2c.hw_capable = false; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_R200: + switch (ddc_line) { + case RADEON_GPIO_DVI_DDC: + case RADEON_GPIO_MONID: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_RV250: + case CHIP_RV280: + switch (ddc_line) { + case RADEON_GPIO_VGA_DDC: + case RADEON_GPIO_DVI_DDC: + case RADEON_GPIO_CRT2_DDC: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_R300: + case CHIP_R350: + switch (ddc_line) { + case RADEON_GPIO_VGA_DDC: + case RADEON_GPIO_DVI_DDC: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_RV350: + case CHIP_RV380: + case CHIP_RS400: + case CHIP_RS480: switch (ddc_line) { case RADEON_GPIO_VGA_DDC: case RADEON_GPIO_DVI_DDC: @@ -504,6 +560,10 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde i2c.hw_capable = false; break; } + break; + default: + i2c.hw_capable = false; + break; } i2c.mm_i2c = false; i2c.i2c_id = 0; @@ -1253,7 +1313,10 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO"); break; case DDC_LCD: /* MM i2c */ - DRM_ERROR("MM i2c requires hw i2c engine\n"); + i2c_bus.valid = true; + i2c_bus.hw_capable = true; + i2c_bus.mm_i2c = true; + tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO"); break; default: DRM_ERROR("Unsupported gpio %d\n", gpio); diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 768b1509fa03..18ac29c505cf 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -638,6 +638,7 @@ int radeon_device_init(struct radeon_device *rdev, mutex_init(&rdev->cs_mutex); mutex_init(&rdev->ib_pool.mutex); mutex_init(&rdev->cp.mutex); + mutex_init(&rdev->dc_hw_i2c_mutex); if (rdev->family >= CHIP_R600) spin_lock_init(&rdev->ih.lock); mutex_init(&rdev->gem.mutex); diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index 75b090f60208..b47a5615fe6a 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -26,6 +26,7 @@ #include "drmP.h" #include "radeon_drm.h" #include "radeon.h" +#include "atom.h" /** * radeon_ddc_probe @@ -71,13 +72,25 @@ static void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state) */ if (rec->hw_capable) { if ((rdev->family >= CHIP_R200) && !ASIC_IS_AVIVO(rdev)) { - if (rec->a_clk_reg == RADEON_GPIO_MONID) { + u32 reg; + + if (rdev->family >= CHIP_RV350) + reg = RADEON_GPIO_MONID; + else if ((rdev->family == CHIP_R300) || + (rdev->family == CHIP_R350)) + reg = RADEON_GPIO_DVI_DDC; + else + reg = RADEON_GPIO_CRT2_DDC; + + mutex_lock(&rdev->dc_hw_i2c_mutex); + if (rec->a_clk_reg == reg) { WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1))); } else { WREG32(RADEON_DVI_I2C_CNTL_0, (RADEON_I2C_SOFT_RST | R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3))); } + mutex_unlock(&rdev->dc_hw_i2c_mutex); } } @@ -168,22 +181,584 @@ static void set_data(void *i2c_priv, int data) WREG32(rec->en_data_reg, val); } -static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap, - struct i2c_msg *msgs, int num) +/* hw i2c engine for r1xx-4xx hardware + * hw can buffer up to 15 bytes + */ +static int r100_hw_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num) +{ + struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap); + struct radeon_device *rdev = i2c->dev->dev_private; + struct radeon_i2c_bus_rec *rec = &i2c->rec; + struct i2c_msg *p; + int i, j, k, ret = num; + /* XXX: use get_engine_clock() to get the current sclk */ + u32 prescale = (((rdev->clock.default_sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128; + u32 i2c_cntl_0, i2c_cntl_1, i2c_data; + u32 tmp, reg; + + mutex_lock(&rdev->dc_hw_i2c_mutex); + + reg = ((prescale << RADEON_I2C_PRESCALE_SHIFT) | + RADEON_I2C_START | + RADEON_I2C_STOP | + RADEON_I2C_GO); + + if (rdev->is_atom_bios) { + tmp = RREG32(RADEON_BIOS_6_SCRATCH); + WREG32(RADEON_BIOS_6_SCRATCH, tmp | ATOM_S6_HW_I2C_BUSY_STATE); + } + + if (rec->mm_i2c) { + i2c_cntl_0 = RADEON_I2C_CNTL_0; + i2c_cntl_1 = RADEON_I2C_CNTL_1; + i2c_data = RADEON_I2C_DATA; + } else { + i2c_cntl_0 = RADEON_DVI_I2C_CNTL_0; + i2c_cntl_1 = RADEON_DVI_I2C_CNTL_1; + i2c_data = RADEON_DVI_I2C_DATA; + + switch (rdev->family) { + case CHIP_R100: + case CHIP_RV100: + case CHIP_RS100: + case CHIP_RV200: + case CHIP_RS200: + case CHIP_RS300: + switch (rec->mask_clk_reg) { + case RADEON_GPIO_DVI_DDC: + /* no gpio select bit */ + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + break; + case CHIP_R200: + /* only bit 4 on r200 */ + switch (rec->mask_clk_reg) { + case RADEON_GPIO_DVI_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1); + break; + case RADEON_GPIO_MONID: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3); + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + break; + case CHIP_RV250: + case CHIP_RV280: + /* bits 3 and 4 */ + switch (rec->mask_clk_reg) { + case RADEON_GPIO_DVI_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1); + break; + case RADEON_GPIO_VGA_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC2); + break; + case RADEON_GPIO_CRT2_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3); + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + break; + case CHIP_R300: + case CHIP_R350: + /* only bit 4 on r300/r350 */ + switch (rec->mask_clk_reg) { + case RADEON_GPIO_VGA_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1); + break; + case RADEON_GPIO_DVI_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3); + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + break; + case CHIP_RV350: + case CHIP_RV380: + case CHIP_R420: + case CHIP_R423: + case CHIP_RV410: + case CHIP_RS400: + case CHIP_RS480: + /* bits 3 and 4 */ + switch (rec->mask_clk_reg) { + case RADEON_GPIO_VGA_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1); + break; + case RADEON_GPIO_DVI_DDC: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC2); + break; + case RADEON_GPIO_MONID: + reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3); + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + break; + default: + DRM_ERROR("unsupported asic\n"); + ret = -EINVAL; + goto done; + break; + } + } + + /* check for bus probe */ + p = &msgs[0]; + if ((num == 1) && (p->len == 0)) { + WREG32(i2c_cntl_0, (RADEON_I2C_DONE | + RADEON_I2C_NACK | + RADEON_I2C_HALT | + RADEON_I2C_SOFT_RST)); + WREG32(i2c_data, (p->addr << 1) & 0xff); + WREG32(i2c_data, 0); + WREG32(i2c_cntl_1, ((1 << RADEON_I2C_DATA_COUNT_SHIFT) | + (1 << RADEON_I2C_ADDR_COUNT_SHIFT) | + RADEON_I2C_EN | + (48 << RADEON_I2C_TIME_LIMIT_SHIFT))); + WREG32(i2c_cntl_0, reg); + for (k = 0; k < 32; k++) { + udelay(10); + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_GO) + continue; + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_DONE) + break; + else { + DRM_DEBUG("i2c write error 0x%08x\n", tmp); + WREG32(i2c_cntl_0, tmp | RADEON_I2C_ABORT); + ret = -EIO; + goto done; + } + } + goto done; + } + + for (i = 0; i < num; i++) { + p = &msgs[i]; + for (j = 0; j < p->len; j++) { + if (p->flags & I2C_M_RD) { + WREG32(i2c_cntl_0, (RADEON_I2C_DONE | + RADEON_I2C_NACK | + RADEON_I2C_HALT | + RADEON_I2C_SOFT_RST)); + WREG32(i2c_data, ((p->addr << 1) & 0xff) | 0x1); + WREG32(i2c_cntl_1, ((1 << RADEON_I2C_DATA_COUNT_SHIFT) | + (1 << RADEON_I2C_ADDR_COUNT_SHIFT) | + RADEON_I2C_EN | + (48 << RADEON_I2C_TIME_LIMIT_SHIFT))); + WREG32(i2c_cntl_0, reg | RADEON_I2C_RECEIVE); + for (k = 0; k < 32; k++) { + udelay(10); + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_GO) + continue; + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_DONE) + break; + else { + DRM_DEBUG("i2c read error 0x%08x\n", tmp); + WREG32(i2c_cntl_0, tmp | RADEON_I2C_ABORT); + ret = -EIO; + goto done; + } + } + p->buf[j] = RREG32(i2c_data) & 0xff; + } else { + WREG32(i2c_cntl_0, (RADEON_I2C_DONE | + RADEON_I2C_NACK | + RADEON_I2C_HALT | + RADEON_I2C_SOFT_RST)); + WREG32(i2c_data, (p->addr << 1) & 0xff); + WREG32(i2c_data, p->buf[j]); + WREG32(i2c_cntl_1, ((1 << RADEON_I2C_DATA_COUNT_SHIFT) | + (1 << RADEON_I2C_ADDR_COUNT_SHIFT) | + RADEON_I2C_EN | + (48 << RADEON_I2C_TIME_LIMIT_SHIFT))); + WREG32(i2c_cntl_0, reg); + for (k = 0; k < 32; k++) { + udelay(10); + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_GO) + continue; + tmp = RREG32(i2c_cntl_0); + if (tmp & RADEON_I2C_DONE) + break; + else { + DRM_DEBUG("i2c write error 0x%08x\n", tmp); + WREG32(i2c_cntl_0, tmp | RADEON_I2C_ABORT); + ret = -EIO; + goto done; + } + } + } + } + } + +done: + WREG32(i2c_cntl_0, 0); + WREG32(i2c_cntl_1, 0); + WREG32(i2c_cntl_0, (RADEON_I2C_DONE | + RADEON_I2C_NACK | + RADEON_I2C_HALT | + RADEON_I2C_SOFT_RST)); + + if (rdev->is_atom_bios) { + tmp = RREG32(RADEON_BIOS_6_SCRATCH); + tmp &= ~ATOM_S6_HW_I2C_BUSY_STATE; + WREG32(RADEON_BIOS_6_SCRATCH, tmp); + } + + mutex_unlock(&rdev->dc_hw_i2c_mutex); + + return ret; +} + +/* hw i2c engine for r5xx hardware + * hw can buffer up to 15 bytes + */ +static int r500_hw_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num) +{ + struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap); + struct radeon_device *rdev = i2c->dev->dev_private; + struct radeon_i2c_bus_rec *rec = &i2c->rec; + struct i2c_msg *p; + int i2c_clock = 50; + int i, j, remaining, current_count, buffer_offset, ret = num; + /* XXX: use get_engine_clock() to get the current sclk */ + u32 prescale; + u32 tmp, reg; + u32 saved1, saved2; + + mutex_lock(&rdev->dc_hw_i2c_mutex); + + /* clear gpio mask bits */ + tmp = RREG32(rec->mask_clk_reg); + tmp &= ~rec->mask_clk_mask; + WREG32(rec->mask_clk_reg, tmp); + tmp = RREG32(rec->mask_clk_reg); + + tmp = RREG32(rec->mask_data_reg); + tmp &= ~rec->mask_data_mask; + WREG32(rec->mask_data_reg, tmp); + tmp = RREG32(rec->mask_data_reg); + + /* clear pin values */ + tmp = RREG32(rec->a_clk_reg); + tmp &= ~rec->a_clk_mask; + WREG32(rec->a_clk_reg, tmp); + tmp = RREG32(rec->a_clk_reg); + + tmp = RREG32(rec->a_data_reg); + tmp &= ~rec->a_data_mask; + WREG32(rec->a_data_reg, tmp); + tmp = RREG32(rec->a_data_reg); + + /* set the pins to input */ + tmp = RREG32(rec->en_clk_reg); + tmp &= ~rec->en_clk_mask; + WREG32(rec->en_clk_reg, tmp); + tmp = RREG32(rec->en_clk_reg); + + tmp = RREG32(rec->en_data_reg); + tmp &= ~rec->en_data_mask; + WREG32(rec->en_data_reg, tmp); + tmp = RREG32(rec->en_data_reg); + + /* */ + tmp = RREG32(RADEON_BIOS_6_SCRATCH); + WREG32(RADEON_BIOS_6_SCRATCH, tmp | ATOM_S6_HW_I2C_BUSY_STATE); + saved1 = RREG32(AVIVO_DC_I2C_CONTROL1); + saved2 = RREG32(0x494); + WREG32(0x494, saved2 | 0x1); + + WREG32(AVIVO_DC_I2C_ARBITRATION, AVIVO_DC_I2C_SW_WANTS_TO_USE_I2C); + for (i = 0; i < 50; i++) { + udelay(1); + if (RREG32(AVIVO_DC_I2C_ARBITRATION) & AVIVO_DC_I2C_SW_CAN_USE_I2C) + break; + } + if (i == 50) { + DRM_ERROR("failed to get i2c bus\n"); + ret = -EBUSY; + goto done; + } + + if (rdev->family == CHIP_R520) + prescale = (127 << 8) + ((rdev->clock.default_sclk * 10) / (4 * 127 * i2c_clock)); + else + prescale = (((rdev->clock.default_sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128; + + reg = AVIVO_DC_I2C_START | AVIVO_DC_I2C_STOP | AVIVO_DC_I2C_EN; + switch (rec->mask_clk_reg) { + case AVIVO_DC_GPIO_DDC1_MASK: + reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC1); + break; + case AVIVO_DC_GPIO_DDC2_MASK: + reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC2); + break; + case AVIVO_DC_GPIO_DDC3_MASK: + reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC3); + break; + default: + DRM_ERROR("gpio not supported with hw i2c\n"); + ret = -EINVAL; + goto done; + } + + /* check for bus probe */ + p = &msgs[0]; + if ((num == 1) && (p->len == 0)) { + WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE | + AVIVO_DC_I2C_NACK | + AVIVO_DC_I2C_HALT)); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET); + udelay(1); + WREG32(AVIVO_DC_I2C_RESET, 0); + + WREG32(AVIVO_DC_I2C_DATA, (p->addr << 1) & 0xff); + WREG32(AVIVO_DC_I2C_DATA, 0); + + WREG32(AVIVO_DC_I2C_CONTROL3, AVIVO_DC_I2C_TIME_LIMIT(48)); + WREG32(AVIVO_DC_I2C_CONTROL2, (AVIVO_DC_I2C_ADDR_COUNT(1) | + AVIVO_DC_I2C_DATA_COUNT(1) | + (prescale << 16))); + WREG32(AVIVO_DC_I2C_CONTROL1, reg); + WREG32(AVIVO_DC_I2C_STATUS1, AVIVO_DC_I2C_GO); + for (j = 0; j < 200; j++) { + udelay(50); + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_GO) + continue; + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_DONE) + break; + else { + DRM_DEBUG("i2c write error 0x%08x\n", tmp); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_ABORT); + ret = -EIO; + goto done; + } + } + goto done; + } + + for (i = 0; i < num; i++) { + p = &msgs[i]; + remaining = p->len; + buffer_offset = 0; + if (p->flags & I2C_M_RD) { + while (remaining) { + if (remaining > 15) + current_count = 15; + else + current_count = remaining; + WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE | + AVIVO_DC_I2C_NACK | + AVIVO_DC_I2C_HALT)); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET); + udelay(1); + WREG32(AVIVO_DC_I2C_RESET, 0); + + WREG32(AVIVO_DC_I2C_DATA, ((p->addr << 1) & 0xff) | 0x1); + WREG32(AVIVO_DC_I2C_CONTROL3, AVIVO_DC_I2C_TIME_LIMIT(48)); + WREG32(AVIVO_DC_I2C_CONTROL2, (AVIVO_DC_I2C_ADDR_COUNT(1) | + AVIVO_DC_I2C_DATA_COUNT(current_count) | + (prescale << 16))); + WREG32(AVIVO_DC_I2C_CONTROL1, reg | AVIVO_DC_I2C_RECEIVE); + WREG32(AVIVO_DC_I2C_STATUS1, AVIVO_DC_I2C_GO); + for (j = 0; j < 200; j++) { + udelay(50); + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_GO) + continue; + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_DONE) + break; + else { + DRM_DEBUG("i2c read error 0x%08x\n", tmp); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_ABORT); + ret = -EIO; + goto done; + } + } + for (j = 0; j < current_count; j++) + p->buf[buffer_offset + j] = RREG32(AVIVO_DC_I2C_DATA) & 0xff; + remaining -= current_count; + buffer_offset += current_count; + } + } else { + while (remaining) { + if (remaining > 15) + current_count = 15; + else + current_count = remaining; + WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE | + AVIVO_DC_I2C_NACK | + AVIVO_DC_I2C_HALT)); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET); + udelay(1); + WREG32(AVIVO_DC_I2C_RESET, 0); + + WREG32(AVIVO_DC_I2C_DATA, (p->addr << 1) & 0xff); + for (j = 0; j < current_count; j++) + WREG32(AVIVO_DC_I2C_DATA, p->buf[buffer_offset + j]); + + WREG32(AVIVO_DC_I2C_CONTROL3, AVIVO_DC_I2C_TIME_LIMIT(48)); + WREG32(AVIVO_DC_I2C_CONTROL2, (AVIVO_DC_I2C_ADDR_COUNT(1) | + AVIVO_DC_I2C_DATA_COUNT(current_count) | + (prescale << 16))); + WREG32(AVIVO_DC_I2C_CONTROL1, reg); + WREG32(AVIVO_DC_I2C_STATUS1, AVIVO_DC_I2C_GO); + for (j = 0; j < 200; j++) { + udelay(50); + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_GO) + continue; + tmp = RREG32(AVIVO_DC_I2C_STATUS1); + if (tmp & AVIVO_DC_I2C_DONE) + break; + else { + DRM_DEBUG("i2c write error 0x%08x\n", tmp); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_ABORT); + ret = -EIO; + goto done; + } + } + remaining -= current_count; + buffer_offset += current_count; + } + } + } + +done: + WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE | + AVIVO_DC_I2C_NACK | + AVIVO_DC_I2C_HALT)); + WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET); + udelay(1); + WREG32(AVIVO_DC_I2C_RESET, 0); + + WREG32(AVIVO_DC_I2C_ARBITRATION, AVIVO_DC_I2C_SW_DONE_USING_I2C); + WREG32(AVIVO_DC_I2C_CONTROL1, saved1); + WREG32(0x494, saved2); + tmp = RREG32(RADEON_BIOS_6_SCRATCH); + tmp &= ~ATOM_S6_HW_I2C_BUSY_STATE; + WREG32(RADEON_BIOS_6_SCRATCH, tmp); + + mutex_unlock(&rdev->dc_hw_i2c_mutex); + + return ret; +} + +static int radeon_sw_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num) { struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap); int ret; radeon_i2c_do_lock(i2c, 1); - if (i2c_transfer(&i2c->algo.radeon.bit_adapter, msgs, num) == num) - ret = num; - else - ret = -1; + ret = i2c_transfer(&i2c->algo.radeon.bit_adapter, msgs, num); radeon_i2c_do_lock(i2c, 0); return ret; } +static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg *msgs, int num) +{ + struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap); + struct radeon_device *rdev = i2c->dev->dev_private; + struct radeon_i2c_bus_rec *rec = &i2c->rec; + int ret; + + switch (rdev->family) { + case CHIP_R100: + case CHIP_RV100: + case CHIP_RS100: + case CHIP_RV200: + case CHIP_RS200: + case CHIP_R200: + case CHIP_RV250: + case CHIP_RS300: + case CHIP_RV280: + case CHIP_R300: + case CHIP_R350: + case CHIP_RV350: + case CHIP_RV380: + case CHIP_R420: + case CHIP_R423: + case CHIP_RV410: + case CHIP_RS400: + case CHIP_RS480: + if (rec->hw_capable) + ret = r100_hw_i2c_xfer(i2c_adap, msgs, num); + else + ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num); + break; + case CHIP_RS600: + case CHIP_RS690: + case CHIP_RS740: + /* XXX fill in hw i2c implementation */ + ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num); + break; + case CHIP_RV515: + case CHIP_R520: + case CHIP_RV530: + case CHIP_RV560: + case CHIP_RV570: + case CHIP_R580: + if (rec->hw_capable) { + if (rec->mm_i2c) + ret = r100_hw_i2c_xfer(i2c_adap, msgs, num); + else + ret = r500_hw_i2c_xfer(i2c_adap, msgs, num); + } else + ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num); + break; + case CHIP_R600: + case CHIP_RV610: + case CHIP_RV630: + case CHIP_RV670: + /* XXX fill in hw i2c implementation */ + ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num); + break; + case CHIP_RV620: + case CHIP_RV635: + case CHIP_RS780: + case CHIP_RS880: + case CHIP_RV770: + case CHIP_RV730: + case CHIP_RV710: + case CHIP_RV740: + /* XXX fill in hw i2c implementation */ + ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num); + break; + default: + DRM_ERROR("i2c: unhandled radeon chip\n"); + ret = -EIO; + break; + } + + return ret; +} + static u32 radeon_i2c_func(struct i2c_adapter *adap) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; @@ -205,8 +780,6 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, if (i2c == NULL) return NULL; - i2c->dev = dev; - i2c->rec = *rec; /* set the internal bit adapter */ i2c->algo.radeon.bit_adapter.owner = THIS_MODULE; i2c_set_adapdata(&i2c->algo.radeon.bit_adapter, i2c); @@ -223,10 +796,12 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, i2c->algo.radeon.bit_data.data = i2c; ret = i2c_bit_add_bus(&i2c->algo.radeon.bit_adapter); if (ret) { - DRM_INFO("Failed to register internal bit i2c %s\n", name); + DRM_ERROR("Failed to register internal bit i2c %s\n", name); goto out_free; } /* set the radeon i2c adapter */ + i2c->dev = dev; + i2c->rec = *rec; i2c->adapter.owner = THIS_MODULE; i2c_set_adapdata(&i2c->adapter, i2c); sprintf(i2c->adapter.name, "Radeon i2c %s", name); @@ -234,7 +809,7 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev, i2c->adapter.algo = &radeon_i2c_algo; ret = i2c_add_adapter(&i2c->adapter); if (ret) { - DRM_INFO("Failed to register i2c %s\n", name); + DRM_ERROR("Failed to register i2c %s\n", name); goto out_free; } diff --git a/drivers/gpu/drm/radeon/radeon_reg.h b/drivers/gpu/drm/radeon/radeon_reg.h index 6d0a009dd4a1..b4a06676fff6 100644 --- a/drivers/gpu/drm/radeon/radeon_reg.h +++ b/drivers/gpu/drm/radeon/radeon_reg.h @@ -1060,32 +1060,38 @@ /* Multimedia I2C bus */ #define RADEON_I2C_CNTL_0 0x0090 -#define RADEON_I2C_DONE (1 << 0) -#define RADEON_I2C_NACK (1 << 1) -#define RADEON_I2C_HALT (1 << 2) -#define RADEON_I2C_SOFT_RST (1 << 5) -#define RADEON_I2C_DRIVE_EN (1 << 6) -#define RADEON_I2C_DRIVE_SEL (1 << 7) -#define RADEON_I2C_START (1 << 8) -#define RADEON_I2C_STOP (1 << 9) -#define RADEON_I2C_RECEIVE (1 << 10) -#define RADEON_I2C_ABORT (1 << 11) -#define RADEON_I2C_GO (1 << 12) -#define RADEON_I2C_PRESCALE_SHIFT 16 +# define RADEON_I2C_DONE (1 << 0) +# define RADEON_I2C_NACK (1 << 1) +# define RADEON_I2C_HALT (1 << 2) +# define RADEON_I2C_SOFT_RST (1 << 5) +# define RADEON_I2C_DRIVE_EN (1 << 6) +# define RADEON_I2C_DRIVE_SEL (1 << 7) +# define RADEON_I2C_START (1 << 8) +# define RADEON_I2C_STOP (1 << 9) +# define RADEON_I2C_RECEIVE (1 << 10) +# define RADEON_I2C_ABORT (1 << 11) +# define RADEON_I2C_GO (1 << 12) +# define RADEON_I2C_PRESCALE_SHIFT 16 #define RADEON_I2C_CNTL_1 0x0094 -#define RADEON_I2C_DATA_COUNT_SHIFT 0 -#define RADEON_I2C_ADDR_COUNT_SHIFT 4 -#define RADEON_I2C_INTRA_BYTE_DELAY_SHIFT 8 -#define RADEON_I2C_SEL (1 << 16) -#define RADEON_I2C_EN (1 << 17) -#define RADEON_I2C_TIME_LIMIT_SHIFT 24 +# define RADEON_I2C_DATA_COUNT_SHIFT 0 +# define RADEON_I2C_ADDR_COUNT_SHIFT 4 +# define RADEON_I2C_INTRA_BYTE_DELAY_SHIFT 8 +# define RADEON_I2C_SEL (1 << 16) +# define RADEON_I2C_EN (1 << 17) +# define RADEON_I2C_TIME_LIMIT_SHIFT 24 #define RADEON_I2C_DATA 0x0098 #define RADEON_DVI_I2C_CNTL_0 0x02e0 # define R200_DVI_I2C_PIN_SEL(x) ((x) << 3) -# define R200_SEL_DDC1 0 /* 0x60 - VGA_DDC */ -# define R200_SEL_DDC2 1 /* 0x64 - DVI_DDC */ -# define R200_SEL_DDC3 2 /* 0x68 - MONID_DDC */ +# define R200_SEL_DDC1 0 /* depends on asic */ +# define R200_SEL_DDC2 1 /* depends on asic */ +# define R200_SEL_DDC3 2 /* depends on asic */ +# define RADEON_SW_WANTS_TO_USE_DVI_I2C (1 << 13) +# define RADEON_SW_CAN_USE_DVI_I2C (1 << 13) +# define RADEON_SW_DONE_USING_DVI_I2C (1 << 14) +# define RADEON_HW_NEEDS_DVI_I2C (1 << 14) +# define RADEON_ABORT_HW_DVI_I2C (1 << 15) +# define RADEON_HW_USING_DVI_I2C (1 << 15) #define RADEON_DVI_I2C_CNTL_1 0x02e4 #define RADEON_DVI_I2C_DATA 0x02e8 |