/* * * Copyright (c) 2012 Gilles Dartiguelongue, Thomas Richter * * All Rights Reserved. * * 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, sub license, 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 (including the * next paragraph) 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 NON-INFRINGEMENT. * IN NO EVENT SHALL THE AUTHOR 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. * */ #include "dvo.h" #include "i915_reg.h" #include "i915_drv.h" #define NS2501_VID 0x1305 #define NS2501_DID 0x6726 #define NS2501_VID_LO 0x00 #define NS2501_VID_HI 0x01 #define NS2501_DID_LO 0x02 #define NS2501_DID_HI 0x03 #define NS2501_REV 0x04 #define NS2501_RSVD 0x05 #define NS2501_FREQ_LO 0x06 #define NS2501_FREQ_HI 0x07 #define NS2501_REG8 0x08 #define NS2501_8_VEN (1<<5) #define NS2501_8_HEN (1<<4) #define NS2501_8_DSEL (1<<3) #define NS2501_8_BPAS (1<<2) #define NS2501_8_RSVD (1<<1) #define NS2501_8_PD (1<<0) #define NS2501_REG9 0x09 #define NS2501_9_VLOW (1<<7) #define NS2501_9_MSEL_MASK (0x7<<4) #define NS2501_9_TSEL (1<<3) #define NS2501_9_RSEN (1<<2) #define NS2501_9_RSVD (1<<1) #define NS2501_9_MDI (1<<0) #define NS2501_REGC 0x0c enum { MODE_640x480, MODE_800x600, MODE_1024x768, }; struct ns2501_reg { uint8_t offset; uint8_t value; }; /* * Magic values based on what the BIOS on * Fujitsu-Siemens Lifebook S6010 programs (1024x768 panel). */ static const struct ns2501_reg regs_1024x768[][86] = { [MODE_640x480] = { [0] = { .offset = 0x0a, .value = 0x81, }, [1] = { .offset = 0x18, .value = 0x07, }, [2] = { .offset = 0x19, .value = 0x00, }, [3] = { .offset = 0x1a, .value = 0x00, }, [4] = { .offset = 0x1b, .value = 0x11, }, [5] = { .offset = 0x1c, .value = 0x54, }, [6] = { .offset = 0x1d, .value = 0x03, }, [7] = { .offset = 0x1e, .value = 0x02, }, [8] = { .offset = 0xf3, .value = 0x90, }, [9] = { .offset = 0xf9, .value = 0x00, }, [10] = { .offset = 0xc1, .value = 0x90, }, [11] = { .offset = 0xc2, .value = 0x00, }, [12] = { .offset = 0xc3, .value = 0x0f, }, [13] = { .offset = 0xc4, .value = 0x03, }, [14] = { .offset = 0xc5, .value = 0x16, }, [15] = { .offset = 0xc6, .value = 0x00, }, [16] = { .offset = 0xc7, .value = 0x02, }, [17] = { .offset = 0xc8, .value = 0x02, }, [18] = { .offset = 0xf4, .value = 0x00, }, [19] = { .offset = 0x80, .value = 0xff, }, [20] = { .offset = 0x81, .value = 0x07, }, [21] = { .offset = 0x82, .value = 0x3d, }, [22] = { .offset = 0x83, .value = 0x05, }, [23] = { .offset = 0x94, .value = 0x00, }, [24] = { .offset = 0x95, .value = 0x00, }, [25] = { .offset = 0x96, .value = 0x05, }, [26] = { .offset = 0x97, .value = 0x00, }, [27] = { .offset = 0x9a, .value = 0x88, }, [28] = { .offset = 0x9b, .value = 0x00, }, [29] = { .offset = 0x98, .value = 0x00, }, [30] = { .offset = 0x99, .value = 0x00, }, [31] = { .offset = 0xf7, .value = 0x88, }, [32] = { .offset = 0xf8, .value = 0x0a, }, [33] = { .offset = 0x9c, .value = 0x24, }, [34] = { .offset = 0x9d, .value = 0x00, }, [35] = { .offset = 0x9e, .value = 0x25, }, [36] = { .offset = 0x9f, .value = 0x03, }, [37] = { .offset = 0xa0, .value = 0x28, }, [38] = { .offset = 0xa1, .value = 0x01, }, [39] = { .offset = 0xa2, .value = 0x28, }, [40] = { .offset = 0xa3, .value = 0x05, }, [41] = { .offset = 0xb6, .value = 0x09, }, [42] = { .offset = 0xb8, .value = 0x00, }, [43] = { .offset = 0xb9, .value = 0xa0, }, [44] = { .offset = 0xba, .value = 0x00, }, [45] = { .offset = 0xbb, .value = 0x20, }, [46] = { .offset = 0x10, .value = 0x00, }, [47] = { .offset = 0x11, .value = 0xa0, }, [48] = { .offset = 0x12, .value = 0x02, }, [49] = { .offset = 0x20, .value = 0x00, }, [50] = { .offset = 0x22, .value = 0x00, }, [51] = { .offset = 0x23, .value = 0x00, }, [52] = { .offset = 0x24, .value = 0x00, }, [53] = { .offset = 0x25, .value = 0x00, }, [54] = { .offset = 0x8c, .value = 0x10, }, [55] = { .offset = 0x8d, .value = 0x02, }, [56] = { .offset = 0x8e, .value = 0x10, }, [57] = { .offset = 0x8f, .value = 0x00, }, [58] = { .offset = 0x90, .value = 0xff, }, [59] = { .offset = 0x91, .value = 0x07, }, [60] = { .offset = 0x92, .value = 0xa0, }, [61] = { .offset = 0x93, .value = 0x02, }, [62] = { .offset = 0xa5, .value = 0x00, }, [63] = { .offset = 0xa6, .value = 0x00, }, [64] = { .offset = 0xa7, .value = 0x00, }, [65] = { .offset = 0xa8, .value = 0x00, }, [66] = { .offset = 0xa9, .value = 0x04, }, [67] = { .offset = 0xaa, .value = 0x70, }, [68] = { .offset = 0xab, .value = 0x4f, }, [69] = { .offset = 0xac, .value = 0x00, }, [70] = { .offset = 0xa4, .value = 0x84, }, [71] = { .offset = 0x7e, .value = 0x18, }, [72] = { .offset = 0x84, .value = 0x00, }, [73] = { .offset = 0x85, .value = 0x00, }, [74] = { .offset = 0x86, .value = 0x00, }, [75] = { .offset = 0x87, .value = 0x00, }, [76] = { .offset = 0x88, .value = 0x00, }, [77] = { .offset = 0x89, .value = 0x00, }, [78] = { .offset = 0x8a, .value = 0x00, }, [79] = { .offset = 0x8b, .value = 0x00, }, [80] = { .offset = 0x26, .value = 0x00, }, [81] = { .offset = 0x27, .value = 0x00, }, [82] = { .offset = 0xad, .value = 0x00, }, [83] = { .offset = 0x08, .value = 0x30, }, /* 0x31 */ [84] = { .offset = 0x41, .value = 0x00, }, [85] = { .offset = 0xc0, .value = 0x05, }, }, [MODE_800x600] = { [0] = { .offset = 0x0a, .value = 0x81, }, [1] = { .offset = 0x18, .value = 0x07, }, [2] = { .offset = 0x19, .value = 0x00, }, [3] = { .offset = 0x1a, .value = 0x00, }, [4] = { .offset = 0x1b, .value = 0x19, }, [5] = { .offset = 0x1c, .value = 0x64, }, [6] = { .offset = 0x1d, .value = 0x02, }, [7] = { .offset = 0x1e, .value = 0x02, }, [8] = { .offset = 0xf3, .value = 0x90, }, [9] = { .offset = 0xf9, .value = 0x00, }, [10] = { .offset = 0xc1, .value = 0xd7, }, [11] = { .offset = 0xc2, .value = 0x00, }, [12] = { .offset = 0xc3, .value = 0xf8, }, [13] = { .offset = 0xc4, .value = 0x03, }, [14] = { .offset = 0xc5, .value = 0x1a, }, [15] = { .offset = 0xc6, .value = 0x00, }, [16] = { .offset = 0xc7, .value = 0x73, }, [17] = { .offset = 0xc8, .value = 0x02, }, [18] = { .offset = 0xf4, .value = 0x00, }, [19] = { .offset = 0x80, .value = 0x27, }, [20] = { .offset = 0x81, .value = 0x03, }, [21] = { .offset = 0x82, .value = 0x41, }, [22] = { .offset = 0x83, .value = 0x05, }, [23] = { .offset = 0x94, .value = 0x00, }, [24] = { .offset = 0x95, .value = 0x00, }, [25] = { .offset = 0x96, .value = 0x05, }, [26] = { .offset = 0x97, .value = 0x00, }, [27] = { .offset = 0x9a, .value = 0x88, }, [28] = { .offset = 0x9b, .value = 0x00, }, [29] = { .offset = 0x98, .value = 0x00, }, [30] = { .offset = 0x99, .value = 0x00, }, [31] = { .offset = 0xf7, .value = 0x88, }, [32] = { .offset = 0xf8, .value = 0x06, }, [33] = { .offset = 0x9c, .value = 0x23, }, [34] = { .offset = 0x9d, .value = 0x00, }, [35] = { .offset = 0x9e, .value = 0x25, }, [36] = { .offset = 0x9f, .value = 0x03, }, [37] = { .offset = 0xa0, .value = 0x28, }, [38] = { .offset = 0xa1, .value = 0x01, }, [39] = { .offset = 0xa2, .value = 0x28, }, [40] = { .offset = 0xa3, .value = 0x05, }, [41] = { .offset = 0xb6, .value = 0x09, }, [42] = { .offset = 0xb8, .value = 0x30, }, [43] = { .offset = 0xb9, .value = 0xc8, }, [44] = { .offset = 0xba, .value = 0x00, }, [45] = { .offset = 0xbb, .value = 0x20, }, [46] = { .offset = 0x10, .value = 0x20, }, [47] = { .offset = 0x11, .value = 0xc8, }, [48] = { .offset = 0x12, .value = 0x02, }, [49] = { .offset = 0x20, .value = 0x00, }, [50] = { .offset = 0x22, .value = 0x00, }, [51] = { .offset = 0x23, .value = 0x00, }, [52] = { .offset = 0x24, .value = 0x00, }, [53] = { .offset = 0x25, .value = 0x00, }, [54] = { .offset = 0x8c, .value = 0x10, }, [55] = { .offset = 0x8d, .value = 0x02, }, [56] = { .offset = 0x8e, .value = 0x04, }, [57] = { .offset = 0x8f, .value = 0x00, }, [58] = { .offset = 0x90, .value = 0xff, }, [59] = { .offset = 0x91, .value = 0x07, }, [60] = { .offset = 0x92, .value = 0xa0, }, [61] = { .offset = 0x93, .value = 0x02, }, [62] = { .offset = 0xa5, .value = 0x00, }, [63] = { .offset = 0xa6, .value = 0x00, }, [64] = { .offset = 0xa7, .value = 0x00, }, [65] = { .offset = 0xa8, .value = 0x00, }, [66] = { .offset = 0xa9, .value = 0x83, }, [67] = { .offset = 0xaa, .value = 0x40, }, [68] = { .offset = 0xab, .value = 0x32, }, [69] = { .offset = 0xac, .value = 0x00, }, [70] = { .offset = 0xa4, .value = 0x80, }, [71] = { .offset = 0x7e, .value = 0x18, }, [72] = { .offset = 0x84, .value = 0x00, }, [73] = { .offset = 0x85, .value = 0x00, }, [74] = { .offset = 0x86, .value = 0x00, }, [75] = { .offset = 0x87, .value = 0x00, }, [76] = { .offset = 0x88, .value = 0x00, }, [77] = { .offset = 0x89, .value = 0x00, }, [78] = { .offset = 0x8a, .value = 0x00, }, [79] = { .offset = 0x8b, .value = 0x00, }, [80] = { .offset = 0x26, .value = 0x00, }, [81] = { .offset = 0x27, .value = 0x00, }, [82] = { .offset = 0xad, .value = 0x00, }, [83] = { .offset = 0x08, .value = 0x30, }, /* 0x31 */ [84] = { .offset = 0x41, .value = 0x00, }, [85] = { .offset = 0xc0, .value = 0x07, }, }, [MODE_1024x768] = { [0] = { .offset = 0x0a, .value = 0x81, }, [1] = { .offset = 0x18, .value = 0x07, }, [2] = { .offset = 0x19, .value = 0x00, }, [3] = { .offset = 0x1a, .value = 0x00, }, [4] = { .offset = 0x1b, .value = 0x11, }, [5] = { .offset = 0x1c, .value = 0x54, }, [6] = { .offset = 0x1d, .value = 0x03, }, [7] = { .offset = 0x1e, .value = 0x02, }, [8] = { .offset = 0xf3, .value = 0x90, }, [9] = { .offset = 0xf9, .value = 0x00, }, [10] = { .offset = 0xc1, .value = 0x90, }, [11] = { .offset = 0xc2, .value = 0x00, }, [12] = { .offset = 0xc3, .value = 0x0f, }, [13] = { .offset = 0xc4, .value = 0x03, }, [14] = { .offset = 0xc5, .value = 0x16, }, [15] = { .offset = 0xc6, .value = 0x00, }, [16] = { .offset = 0xc7, .value = 0x02, }, [17] = { .offset = 0xc8, .value = 0x02, }, [18] = { .offset = 0xf4, .value = 0x00, }, [19] = { .offset = 0x80, .value = 0xff, }, [20] = { .offset = 0x81, .value = 0x07, }, [21] = { .offset = 0x82, .value = 0x3d, }, [22] = { .offset = 0x83, .value = 0x05, }, [23] = { .offset = 0x94, .value = 0x00, }, [24] = { .offset = 0x95, .value = 0x00, }, [25] = { .offset = 0x96, .value = 0x05, }, [26] = { .offset = 0x97, .value = 0x00, }, [27] = { .offset = 0x9a, .value = 0x88, }, [28] = { .offset = 0x9b, .value = 0x00, }, [29] = { .offset = 0x98, .value = 0x00, }, [30] = { .offset = 0x99, .value = 0x00, }, [31] = { .offset = 0xf7, .value = 0x88, }, [32] = { .offset = 0xf8, .value = 0x0a, }, [33] = { .offset = 0x9c, .value = 0x24, }, [34] = { .offset = 0x9d, .value = 0x00, }, [35] = { .offset = 0x9e, .value = 0x25, }, [36] = { .offset = 0x9f, .value = 0x03, }, [37] = { .offset = 0xa0, .value = 0x28, }, [38] = { .offset = 0xa1, .value = 0x01, }, [39] = { .offset = 0xa2, .value = 0x28, }, [40] = { .offset = 0xa3, .value = 0x05, }, [41] = { .offset = 0xb6, .value = 0x09, }, [42] = { .offset = 0xb8, .value = 0x00, }, [43] = { .offset = 0xb9, .value = 0xa0, }, [44] = { .offset = 0xba, .value = 0x00, }, [45] = { .offset = 0xbb, .value = 0x20, }, [46] = { .offset = 0x10, .value = 0x00, }, [47] = { .offset = 0x11, .value = 0xa0, }, [48] = { .offset = 0x12, .value = 0x02, }, [49] = { .offset = 0x20, .value = 0x00, }, [50] = { .offset = 0x22, .value = 0x00, }, [51] = { .offset = 0x23, .value = 0x00, }, [52] = { .offset = 0x24, .value = 0x00, }, [53] = { .offset = 0x25, .value = 0x00, }, [54] = { .offset = 0x8c, .value = 0x10, }, [55] = { .offset = 0x8d, .value = 0x02, }, [56] = { .offset = 0x8e, .value = 0x10, }, [57] = { .offset = 0x8f, .value = 0x00, }, [58] = { .offset = 0x90, .value = 0xff, }, [59] = { .offset = 0x91, .value = 0x07, }, [60] = { .offset = 0x92, .value = 0xa0, }, [61] = { .offset = 0x93, .value = 0x02, }, [62] = { .offset = 0xa5, .value = 0x00, }, [63] = { .offset = 0xa6, .value = 0x00, }, [64] = { .offset = 0xa7, .value = 0x00, }, [65] = { .offset = 0xa8, .value = 0x00, }, [66] = { .offset = 0xa9, .value = 0x04, }, [67] = { .offset = 0xaa, .value = 0x70, }, [68] = { .offset = 0xab, .value = 0x4f, }, [69] = { .offset = 0xac, .value = 0x00, }, [70] = { .offset = 0xa4, .value = 0x84, }, [71] = { .offset = 0x7e, .value = 0x18, }, [72] = { .offset = 0x84, .value = 0x00, }, [73] = { .offset = 0x85, .value = 0x00, }, [74] = { .offset = 0x86, .value = 0x00, }, [75] = { .offset = 0x87, .value = 0x00, }, [76] = { .offset = 0x88, .value = 0x00, }, [77] = { .offset = 0x89, .value = 0x00, }, [78] = { .offset = 0x8a, .value = 0x00, }, [79] = { .offset = 0x8b, .value = 0x00, }, [80] = { .offset = 0x26, .value = 0x00, }, [81] = { .offset = 0x27, .value = 0x00, }, [82] = { .offset = 0xad, .value = 0x00, }, [83] = { .offset = 0x08, .value = 0x34, }, /* 0x35 */ [84] = { .offset = 0x41, .value = 0x00, }, [85] = { .offset = 0xc0, .value = 0x01, }, }, }; static const struct ns2501_reg regs_init[] = { [0] = { .offset = 0x35, .value = 0xff, }, [1] = { .offset = 0x34, .value = 0x00, }, [2] = { .offset = 0x08, .value = 0x30, }, }; struct ns2501_priv { bool quiet; const struct ns2501_reg *regs; }; #define NSPTR(d) ((NS2501Ptr)(d->DriverPrivate.ptr)) /* * For reasons unclear to me, the ns2501 at least on the Fujitsu/Siemens * laptops does not react on the i2c bus unless * both the PLL is running and the display is configured in its native * resolution. * This function forces the DVO on, and stores the registers it touches. * Afterwards, registers are restored to regular values. * * This is pretty much a hack, though it works. * Without that, ns2501_readb and ns2501_writeb fail * when switching the resolution. */ /* ** Read a register from the ns2501. ** Returns true if successful, false otherwise. ** If it returns false, it might be wise to enable the ** DVO with the above function. */ static bool ns2501_readb(struct intel_dvo_device *dvo, int addr, uint8_t * ch) { struct intel_iic_softc *sc; struct ns2501_priv *ns = dvo->dev_priv; struct i2c_adapter *adapter = dvo->i2c_bus; u8 out_buf[2]; u8 in_buf[2]; struct i2c_msg msgs[] = { { .slave = dvo->slave_addr << 1, .flags = 0, .len = 1, .buf = out_buf, }, { .slave = dvo->slave_addr << 1, .flags = I2C_M_RD, .len = 1, .buf = in_buf, } }; out_buf[0] = addr; out_buf[1] = 0; sc = device_get_softc(adapter); if (iicbus_transfer(adapter, msgs, 2) == 0) { *ch = in_buf[0]; return true; } if (!ns->quiet) { DRM_DEBUG_KMS ("Unable to read register 0x%02x from %s:0x%02x.\n", addr, sc->name, dvo->slave_addr); } return false; } /* ** Write a register to the ns2501. ** Returns true if successful, false otherwise. ** If it returns false, it might be wise to enable the ** DVO with the above function. */ static bool ns2501_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch) { struct intel_iic_softc *sc; struct ns2501_priv *ns = dvo->dev_priv; struct i2c_adapter *adapter = dvo->i2c_bus; uint8_t out_buf[2]; struct i2c_msg msg = { .slave = dvo->slave_addr << 1, .flags = 0, .len = 2, .buf = out_buf, }; out_buf[0] = addr; out_buf[1] = ch; sc = device_get_softc(adapter); if (iicbus_transfer(adapter, &msg, 1) == 0) { return true; } if (!ns->quiet) { DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d\n", addr, sc->name, dvo->slave_addr); } return false; } /* National Semiconductor 2501 driver for chip on i2c bus * scan for the chip on the bus. * Hope the VBIOS initialized the PLL correctly so we can * talk to it. If not, it will not be seen and not detected. * Bummer! */ static bool ns2501_init(struct intel_dvo_device *dvo, struct i2c_adapter *adapter) { struct intel_iic_softc *sc; /* this will detect the NS2501 chip on the specified i2c bus */ struct ns2501_priv *ns; unsigned char ch; sc = device_get_softc(adapter); ns = kzalloc(sizeof(struct ns2501_priv), GFP_KERNEL); if (ns == NULL) return false; dvo->i2c_bus = adapter; dvo->dev_priv = ns; ns->quiet = true; if (!ns2501_readb(dvo, NS2501_VID_LO, &ch)) goto out; if (ch != (NS2501_VID & 0xff)) { DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", ch, sc->name, dvo->slave_addr); goto out; } if (!ns2501_readb(dvo, NS2501_DID_LO, &ch)) goto out; if (ch != (NS2501_DID & 0xff)) { DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", ch, sc->name, dvo->slave_addr); goto out; } ns->quiet = false; DRM_DEBUG_KMS("init ns2501 dvo controller successfully!\n"); return true; out: kfree(ns); return false; } static enum drm_connector_status ns2501_detect(struct intel_dvo_device *dvo) { /* * This is a Laptop display, it doesn't have hotplugging. * Even if not, the detection bit of the 2501 is unreliable as * it only works for some display types. * It is even more unreliable as the PLL must be active for * allowing reading from the chiop. */ return connector_status_connected; } static enum drm_mode_status ns2501_mode_valid(struct intel_dvo_device *dvo, struct drm_display_mode *mode) { DRM_DEBUG_KMS ("is mode valid (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d)\n", mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); /* * Currently, these are all the modes I have data from. * More might exist. Unclear how to find the native resolution * of the panel in here so we could always accept it * by disabling the scaler. */ if ((mode->hdisplay == 640 && mode->vdisplay == 480 && mode->clock == 25175) || (mode->hdisplay == 800 && mode->vdisplay == 600 && mode->clock == 40000) || (mode->hdisplay == 1024 && mode->vdisplay == 768 && mode->clock == 65000)) { return MODE_OK; } else { return MODE_ONE_SIZE; /* Is this a reasonable error? */ } } static void ns2501_mode_set(struct intel_dvo_device *dvo, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); int mode_idx, i; DRM_DEBUG_KMS ("set mode (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d).\n", mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); if (mode->hdisplay == 640 && mode->vdisplay == 480) mode_idx = MODE_640x480; else if (mode->hdisplay == 800 && mode->vdisplay == 600) mode_idx = MODE_800x600; else if (mode->hdisplay == 1024 && mode->vdisplay == 768) mode_idx = MODE_1024x768; else return; /* Hopefully doing it every time won't hurt... */ for (i = 0; i < ARRAY_SIZE(regs_init); i++) ns2501_writeb(dvo, regs_init[i].offset, regs_init[i].value); ns->regs = regs_1024x768[mode_idx]; for (i = 0; i < 84; i++) ns2501_writeb(dvo, ns->regs[i].offset, ns->regs[i].value); } /* set the NS2501 power state */ static bool ns2501_get_hw_state(struct intel_dvo_device *dvo) { unsigned char ch; if (!ns2501_readb(dvo, NS2501_REG8, &ch)) return false; return ch & NS2501_8_PD; } /* set the NS2501 power state */ static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable) { struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); DRM_DEBUG_KMS("Trying set the dpms of the DVO to %i\n", enable); if (enable) { if (WARN_ON(ns->regs[83].offset != 0x08 || ns->regs[84].offset != 0x41 || ns->regs[85].offset != 0xc0)) return; ns2501_writeb(dvo, 0xc0, ns->regs[85].value | 0x08); ns2501_writeb(dvo, 0x41, ns->regs[84].value); ns2501_writeb(dvo, 0x34, 0x01); msleep(15); ns2501_writeb(dvo, 0x08, 0x35); if (!(ns->regs[83].value & NS2501_8_BPAS)) ns2501_writeb(dvo, 0x08, 0x31); msleep(200); ns2501_writeb(dvo, 0x34, 0x03); ns2501_writeb(dvo, 0xc0, ns->regs[85].value); } else { ns2501_writeb(dvo, 0x34, 0x01); msleep(200); ns2501_writeb(dvo, 0x08, 0x34); msleep(15); ns2501_writeb(dvo, 0x34, 0x00); } } static void ns2501_destroy(struct intel_dvo_device *dvo) { struct ns2501_priv *ns = dvo->dev_priv; if (ns) { kfree(ns); dvo->dev_priv = NULL; } } struct intel_dvo_dev_ops ns2501_ops = { .init = ns2501_init, .detect = ns2501_detect, .mode_valid = ns2501_mode_valid, .mode_set = ns2501_mode_set, .dpms = ns2501_dpms, .get_hw_state = ns2501_get_hw_state, .destroy = ns2501_destroy, };